It stalls sideways because the wheels have stopped turning ! It’s lost its forward momentum, at low rpm you have practically no torque available from the motor, it’s not a diesel engine & you have a huge flat spot in the power.
It’s a traditional manual transmission. When the clutch is engaged you can’t just stop. I know he put that Revo transmission in but that doesn’t change the direct drive nature of the setup.
No, the carbs are losing their prime because there's no tank pressure. The diaphragm pumps on the carbs depend on intake pulses to function, and at high rpm the pulses are too close together to provide sufficient volume. That's why you have run a line from the muffler to pressurize the tank. This is done on a lot of RC planes as well for the same reason.
For curiosity sake since I'm not a mechanic or engineer or mechanically incline... would a check valve "back flow preventor" work similar to plumbing applications?
Same, he's very talented with everything he makes for these cars. The new engine he just showed, the orange one that made by a different company, seems like it would be way better in this.
The effort and determination of this guy is insane. Every time I see one of your video's in my for you page I don't even hesitate to click on them. I am proud to be one of your 1.87M subscribers!
If you think it’s fuel sloshing make baffles in the tank to reduce the liquid movement. And also the low rpm if you throw the drift tire with a plastic sleeve you can draw your conclusion of fuel loss and or rpm being to low
It would actually reduce the engine RPM; plus he's already burning out clutches on the flywheel he has, so this might not be a good idea. The comments above about pressurizing the fuel tank with the exhaust is probably an easier solution and won't require any additional modification. Seems to me like the system is losing fuel flow to the dual carb setup in a tilted position which is very indicative of low fuel pressure.
@@someonesomewhere_777 A heavier flywheel will not reduce engine RPM. It WILL slow engine response due to more inertia, which is why a lightened flywheel is a common performance modification. The downside to a light flywheel is a tendency for the engine to lose RPM quickly...sometimes so quickly that it dies. Which is what might be happening here. Slowing engine response will not hurt the clutch. If anything, it will increase clutch life due to more gradual changes in RPM. Johnny has a lathe and a mill - adding weight to the flywheel shouldn't be a big deal (if that in fact is the problem).
My guess is rotor shaft flex and the tolerances of the supercharger synchro gears: -That tri-lobe rotor looks to be a 3D ratio, with 3 segments I doubt it has the rigidity to stay straight under boost. -The synchro gears would need to have insanely tight tolerances and sub tenth backlash to maintain the lobe seal with such small gears/rotors. Even operating with a wet seal design. -If you do decide to make your own rotors, may I suggest a helical tri-lobe.
U could cut a two slots into the metal, to maintain balance of the clutch and into the friction material, and use two dowel pins plus a lil glue to keep it from delaminating!! Just a thought!! Keep it up, love the Vidz!!!!
i think part of the reason it stalls when u slide is causee the engine just doesent have enough energy to keep going when the wheels slow down after a slide. real cars do the same if u spin and dont disengage the cluch
its been more than 2 years followed you and i'v seen this little thing grew and now its 90% finished i am so proud of you. gg and continue let's go to the 2mill
I've been waiting for this video for so long and I'm glad it's finally here. But also I can see it needs some refinements in the power band, especially in the low rpm, knowing your potential it would be amazing to see you make turbos like you did for the twin cylinder 4-stroke, but have two different sized turbos and connect them in a compound setup so that way you can get the most torque down low and horsepower up high.
I agree with a lot of these comments about the stalling issue. I’m leaning towards the idea that was mentioned about the clutch being still engaged while the car comes to a complete stop. That would definitely stall my car at least. That also probably played a roll in the clutch breaking. If it’s a fuel issue though, my suggestion is try a bigger fuel line, and a carb bowl if they don’t already have one. The bigger line will keep it from hydro locking, and the bowl will help with whatever air still gets through. As for the super charger I’m on team solid rotors lol. Those have to be one, solid, smooth piece to get rid of the slap. They have way too much wiggle being three pieces each. In other news; line lock? Totally unnecessary and would probably destroy the transmission but man would it be cool if it worked. Just sitting there roasting the tires and then turning it off and peeling away. As always, love the video. Keep up the awesome work, and I can’t wait for the next one.
the motor shutting off when skidding could be something like the oil going to one bank of cylinders instead of staying in the pan? but then itd start running way rougher so idk. maybe you can add one of your older centrifugal superchargers to it instead of the roots blower? with only the one turbine it shouldnt have any collision issues.
The fuel cut out seem strange, not sure if it's from fuel sloshing, the stall at 5:47 seems sus, like it should have settled it was in a straigt pull for long enough, make sure primer line from exhaust to tank doesn't crimp/kink, it's sounds like it doesn't want to run on the main jet, also this thing could be susceptible to vapor lock?
I would love to see new rotors for the supercharger!! There's so many videos out there with little superchargers and turbochargers for micro engines like this and none of them ever work. it's so sad I want to see one that works. you can do it!!
The scoring on the inside of the supercharger housing looked like it was towards the center, so the rods holding the rotors might be bowing from a slight imbalance when they spin fast enough. Someone mentioned one-piece rotors, so that might help a rigidity issue. If that's what's actually happening.
@JohnnyQ90 - just a thought: set up the throttle and clutch actuations on the same servo (or multiple servos from the same channel) - as you give it more throttle, the clutch starts to engage, and as you let off, the clutch disengages. This would take an incredible amount of fine tuning, but I’d imagine would work extremely well, but still provide that realistic functionality you’re looking for.
It has a terrible understeer, the car doesn't want to turn. And if you apply too much power, it immediately oversteers. I suggest you check your differential (if exists) . This issue causes extra load to your engine and clutch while turning. The car came from a long way, and I love how you build it with great effort and create quality content. Keep on, friend across the pond!
stalling- could be fuel pickup location on your tank you are using, also can play with the length of the hose from the exhaust to the tank to help keep constant pressure in the tank.
About the sideways shut-off: could it be caused by the G-force when all the fuel is on one side of the tank? - Fill more in. - A little reservoir between in front of or after the fuel pump?
It seems like there is a lot of hope for this project to actually come all the way through. Looking great so far and I can see it getting the last 25 percent improvement and then it probably will be the best rc car of its type on RUclips. It starts, the throttle is responsive and its fast enough to warrant the effort.
Awesome video as always, Sir. Long time subscriber. As an American, I always love seeing a fire breathing V8, in any form. I hope you can get the blower figured out. Keep up the great work Mr. Q90!
Also, it shuts off becasue you need a baffle in the tank(possibly even the carburetor bowls). The G forces involved in that turn are preventing fuel from feeding the carb.
So exciting to see that beast off the chain and thrashing about! Just like any scratch built DIY project, things are going to happen. I have 100% faith that you will work out the bugs. Looking forward to the next update!!
I can only imagine how long it took you from concept, to making this video of it driving. R&D is an unimaginably arduous task of success & failure, until you get to the point of consistant successive runs of pure V8 stomping runs of smiling, until your face hurts. Some people think making these "toys" is a waste of an adult's time, energy & resources. What low brain wattage floofs don't understand is, this is the very type of activity which gives some of us a reason to wake up on the weekend mornings. Never stop researching, developing, assembling, testing, & succeeding!
Johnny, on nitro engines, we have to apply pressure to the fuel tank via a line from the exhaust. The impulses form the exhaust muffler pressurize the fuel tank.This will keep fuel flowing to the carbs and prevent leaning out due to fuel slosh.
Dry sump tanks in race cars are tall to prevent the oil pick up in the bottom from being uncovered. You need to do the same with your fuel tank; taller talk will prevent the pick up from pulling air. Great work!!!
If you add a pressurized fuel rail system with like even 2 or 3 psi it would prevent it from shutting off when starved of fuel. I noticed its fuel delivery when it didnt fully die after turning and when you throttled it, it was already leaning out and it was to lean to get the fuel to create combustion again.
Hey, here's an idea. Keep doing what you're doing, as long as you are having fun. I enjoy watching a builder working things out and growing a skill set. Hopefully, some sponsors will help with more tools and connections to push you more. It was my first time watching you, and subscribing is not a question for me. Subscribed. It would be nice to see you in the comments if you have not already.
It would be interesting to spin the supercharger at operating RPM without the engine, to see how much air it moves. I think these tiny engines are too small for forced induction to work properly. And I think the tolerances are probably just good enough for them to run, I think any substantial level of boost would bend things or just end up being lost as blow by. I'd love to be proven wrong, though. "2 Stroke Stuffing" gets an astounding amount of power out of a 50cc engine, but that's only one cylinder, and it's actually designed for vehicular use.
Might wanna do a teardown and inspect of your engine if the supercharger has that much scoring and if you have been running it all that time. Would you be able to modify the rotors to put teflon seals on the rotors?
can you please explain why you measured the rpms when determining if the supercharger actually did something? shouldn't they stay the same due to the gearing? i'm genuinely curious, i'm new to the world of rc cars
Obviously adding any kind of boost, will not increase the rpm of an engine. What I did, was to show how easily the engine performed N/A (1,100rpm), but with the supercharger it reached slighly lower rpm, which to me, is an indication that it didn't actually do anything, as it should have the same rpm as in N/A form. Even if the supercharger was adding any power, it wouldn't be for too long, as it started self destructing.
There was another channel on here that built a custom ECM for one of these engines that made it run so much better, you can tell by how it sounds especially when trying to rev up that it sounds starved. It would be pretty sweet to see a collab between you two. It would really wake this thing up.
Sweet! So glad you're at the testing phase. I've been watching the build process and am REALLY IMPRESSED! I don't know if anyone has mentioned it yet or I may grant forgotten if you already thought about this, but have you implemented some runaway protection? You know, how to make the car stop if it loses contact with the radio while under full throttle. Always an issue with nitro RC cars.
So cool to see this thing moving under it's own power. I'm sure you'll find solutions to the current issues rather easily. The supercharger is definitely a symmetrical issue. Most full sized one you will see the rotor is twisted which not only generates more force of airflow but also is kind of an aerodynamic effect. The doesnt help that the rotors are only held on at one end. Being fixed at both ends and better designed rotors will fix that issue as far as i can tell. I believe the engine shutting off is a combination of things mentioned by other people about fuel pressure and lack of torque from the engine when the wheels stop turning when sliding. Keep up the awesome work. Your channel is definitely a satisfying watch.
I wonder if knurling the mating surface and pressing the clutch material on would help the two parts stick better? with or without adhesive, im not sure
I'd add a baffled fuel cell to the list too, maybe put some foam in there and or make something custom with a baffled swirl pot built into it, the sort of thing you see on drag cars. The sudden direction changes and inertia were visibly causing the fuel to climb up the side of the tank which as the fuel goes down are probably starving the feed line.
I think the stalling is many things at the same time. - low torque at low rpm. You either need to have the clutch slip or do a burnout to maintain enough engine rpm. Your lose all speed forward which forces the wheels to stop. You don't have enough gears in the gearbox to help keep the engine rpm. - add some baffles in the tank - consider some exhaust to add fuel pressure. Great video. But maybe not so great for the supplier of the compressor. It did have issues even before you installed it, being silent in only one direction. They need to step up their manufacturing quality and testing.
Using the exhaust to pressurize the fuel tank is good. Putting partitions with small holes into the fuel tank might help with stalling when sideways. that way the fuel doesn't slosh around as much.
Sorry if this is random but I was wondering about getting a mini lathe (more like micro) I saw some for sale on stirlingkit and was wondering if they are any good, or could be upgraded to be good. The website shows your channel name so I thought I’d ask you. Thanks
So freakin cool bud. That definitely has some power. It sure is nice to have that starter on the remote. I used to have to run up and pull start mine lol. But it was also a 1 cylinder tiger 21 motor. I think thats what it was called. This is just too cool bud. Well done.
through some dowels through the rotors so they stay put. thread the ends so you can secure them. It might help the rotors not contact the housing since it won't be able to deform the aluminum at high rpm.
It’s binding the transmission when you are sideways. There isn’t enough power to keep the wheels spinning so like any manual transmission it’ll stall out at low rpm. I have schematics of a two speed
As far as I always understood, a charged air system is not there to increase the RPM's but to increase the power out put, i.e. to reach that max rpm even when the engine is under load. free spinning it on the roller bank doesn't appear to apply a load to your set up. or am I wrong here?
You could always try porting it as well as a low pressure fuel pump so it never starves. also larger jets if you wanna commit to the super charger, more air needs more fuel (you could've already done that but I'm a lil dumb)
The comment about the tank needing to be pressurized is correct. They flow a lot of fuel at WOT, and the diaphragm pumps in the carbs can't keep up with it unless you have some tank pressure. You might look into sintered bronze for your clutch basket. The hotter it gets, the better it works. You may need a bit stronger return spring though.. Other than that, pretty good run for the 'first' time out!!😄👍👍
Would putting pressure from the exhaust to the tank help with the stalling? Kinda like they do or did with the 2 stroke RC engines? Just a thought. I could and probably am way off base though. Either way, still an awesome video and car. Thanks for sharing.
Rotors misaligned as you pointed out 1:10. They are 5mm holes in those rotors, get yourself 6 lightweight dowels of equal length and loctite into those holes.
I feel like there is way too much restriction on the supercharger. The little boost you are making is going right into forcing all that air through 2 tiny outlets. You should try making your own manifold with way more flow and opening up the bottom of the supercharger to let it breathe. If you have the patients for it, a twisted pair of rotors would also help and a larger carb.
I think the problem with that blower might be that it’s not creating enough boost and has too many issues. You should try centrifugal instead. Lots of ones already out there that you can make fit and work fine.
For the clutch how about making a flat flywheel and using mountain bike hydraulic disc brake pads as clutch pads using that pivot you already got to push 3 or 4 pads against a flywheel.
I wonder if you can have a throttle mix setup for the clutch to engage and disengage when the throttle is at 10-15%. That way, you should be able to have the engine run without the clutch staying engaged when you put on the brakes.
Btw, congratulations on a successful test run! I've been dying to see this come together for years now! I can't wait to see the final episode on the car.
Johnny, you should mill out some 1 piece rotors for that blower and open up the ports so it actually flows air.
And if he gave them some twist they would probably be smoother.
There's a reason nobody does forced induction on RC engines. It doesn't work.
real screw/roots blowers have Teflon strips to help seal. i dont know if he could do that too.
@@1one3_Racing rc airplaned have been using superchargers for a long time lol
@@everettstormy is this an aeroplane?
The sound never gets old, and hearing it on a moving chassis outside is just fricken amazing
Yes & I'd crank up the volume on "Copperhead Road" by Steve Earle EVERY time I do routine maintenance on mine!
It stalls sideways because the wheels have stopped turning ! It’s lost its forward momentum, at low rpm you have practically no torque available from the motor, it’s not a diesel engine & you have a huge flat spot in the power.
I'm sure this has a one way bearing preventing that issue
@@andruwmartinez4129it stalled In the beginning of the video when he engaged the clutch then had to give it gas to take off running
It’s a traditional manual transmission. When the clutch is engaged you can’t just stop. I know he put that Revo transmission in but that doesn’t change the direct drive nature of the setup.
No, the carbs are losing their prime because there's no tank pressure. The diaphragm pumps on the carbs depend on intake pulses to function, and at high rpm the pulses are too close together to provide sufficient volume. That's why you have run a line from the muffler to pressurize the tank. This is done on a lot of RC planes as well for the same reason.
For curiosity sake since I'm not a mechanic or engineer or mechanically incline... would a check valve "back flow preventor" work similar to plumbing applications?
You need to ensure the fuel tank remains pressurised by feeding exhaust pressure into it. this way, fuel is always forced into the engine.
Very nice way to blow things up.
@@GeomancerHT Thats how nitro engines work, do your research lol
@@GeomancerHT All RC nitro engines do this, pretty much.
@kynghype9715 Geomancer probably thinks EGR valves are a good thing too 😂😂
@@mattinwinkymg Lol... oddly enough I got into an argument with someone about that and PCV systems too!
I have dreamed of seeing a V8 RC car since I was like six thank you for making this I couldn’t stop smiling
Same, he's very talented with everything he makes for these cars. The new engine he just showed, the orange one that made by a different company, seems like it would be way better in this.
@@frankierzucekjr same...
The effort and determination of this guy is insane. Every time I see one of your video's in my for you page I don't even hesitate to click on them. I am proud to be one of your 1.87M subscribers!
I am a here as well....Count me in on this comment
I myself! I had raced Car, Motorcycle, and RC!
100% agreed. This man has the best channel on RUclips.
One hell of a smart man
If you think it’s fuel sloshing make baffles in the tank to reduce the liquid movement. And also the low rpm if you throw the drift tire with a plastic sleeve you can draw your conclusion of fuel loss and or rpm being to low
Review how gas RC PLANES do it. They go inverted and still have power.
Full size car our fuel cell has foam in it to prevent sloshing may be easier than making baffles
Φίλε Έλληνας είσαι σε βλέπω τόσο καιρό και δεν με πήγε ο νους ότι είναι Έλληνας. Μπράβο ρε φίλε συγχαρητήρια, τέλεια βιντεάκια
Φίλε και εγώ έπαθα πλάκα τον βλαιπω πάνω από 2 χρόνια και δεν μου είχε περάσει ποτέ από το μυαλό 😮
Ναι ισχύει παιδιά ο τύπος είναι πολύ μυαλό!
That is becoming some serious automotive design, i mean that colling and exhaust, you grow my man!
Colling?
I’ve been watching since you got the V8 and I’m stoked to see it driving and skidding around bro, well done 🙏
A heavier flywheel may help with the shutoff problem.
Why??
@@fra5724more inertia, but the problem there is it wouldn’t be as rev happy. It should still rev plenty though because it’s a
@@goosebox9064 ty
It would actually reduce the engine RPM; plus he's already burning out clutches on the flywheel he has, so this might not be a good idea. The comments above about pressurizing the fuel tank with the exhaust is probably an easier solution and won't require any additional modification. Seems to me like the system is losing fuel flow to the dual carb setup in a tilted position which is very indicative of low fuel pressure.
@@someonesomewhere_777 A heavier flywheel will not reduce engine RPM. It WILL slow engine response due to more inertia, which is why a lightened flywheel is a common performance modification. The downside to a light flywheel is a tendency for the engine to lose RPM quickly...sometimes so quickly that it dies. Which is what might be happening here. Slowing engine response will not hurt the clutch. If anything, it will increase clutch life due to more gradual changes in RPM. Johnny has a lathe and a mill - adding weight to the flywheel shouldn't be a big deal (if that in fact is the problem).
My guess is rotor shaft flex and the tolerances of the supercharger synchro gears:
-That tri-lobe rotor looks to be a 3D ratio, with 3 segments I doubt it has the rigidity to stay straight under boost.
-The synchro gears would need to have insanely tight tolerances and sub tenth backlash to maintain the lobe seal with such small gears/rotors. Even operating with a wet seal design.
-If you do decide to make your own rotors, may I suggest a helical tri-lobe.
I'm just impressed with how well it starts, I've seen lots of others struggle with these.
Best v8 rc ive seen running an driving so far on RUclips....❤
U could cut a two slots into the metal, to maintain balance of the clutch and into the friction material, and use two dowel pins plus a lil glue to keep it from delaminating!! Just a thought!! Keep it up, love the Vidz!!!!
This thing is so dang cool! Thanks for sticking with it and continuing to share!
That rc has 4 more cylinders than my Subaru 💀
i think part of the reason it stalls when u slide is causee the engine just doesent have enough energy to keep going when the wheels slow down after a slide. real cars do the same if u spin and dont disengage the cluch
its been more than 2 years followed you and i'v seen this little thing grew and now its 90% finished i am so proud of you. gg and continue let's go to the 2mill
I bet youre so happy to see it coming together. I know your viewers are. Way cooler than normal RC cars nitro or battery. Well done.
I will like to shrink myself so I could drive it. Dispite the repairs it needs I still find it perfect and awesome. Great work Johnny.
That sounds awesome dude holy fuck. This is like the next level in realism. Hearing it pass you even at those low speeds is insane
How loud is it? Is it painfully loud like a typical nitro engine?
I've been waiting for this video for so long and I'm glad it's finally here. But also I can see it needs some refinements in the power band, especially in the low rpm, knowing your potential it would be amazing to see you make turbos like you did for the twin cylinder 4-stroke, but have two different sized turbos and connect them in a compound setup so that way you can get the most torque down low and horsepower up high.
This dude and these builds inspire me to go learn how to do stuff. So freaking cool. Thanks for documenting this for us, Johnny!
Pulling air bubbles into the fuel line. Add a splitter with 2 inlets inside the tank.
Or a piece of fuel filter foam to stop the sloshing.
Just get the four- stroke sound is amazing. Phenomenal piece of engineering all around!!
I agree with a lot of these comments about the stalling issue. I’m leaning towards the idea that was mentioned about the clutch being still engaged while the car comes to a complete stop. That would definitely stall my car at least. That also probably played a roll in the clutch breaking. If it’s a fuel issue though, my suggestion is try a bigger fuel line, and a carb bowl if they don’t already have one. The bigger line will keep it from hydro locking, and the bowl will help with whatever air still gets through. As for the super charger I’m on team solid rotors lol. Those have to be one, solid, smooth piece to get rid of the slap. They have way too much wiggle being three pieces each.
In other news; line lock? Totally unnecessary and would probably destroy the transmission but man would it be cool if it worked. Just sitting there roasting the tires and then turning it off and peeling away.
As always, love the video. Keep up the awesome work, and I can’t wait for the next one.
Imagine showing up to a car meet and whipping out the V8 RC car. Coolest guy at the meet :'D
the motor shutting off when skidding could be something like the oil going to one bank of cylinders instead of staying in the pan? but then itd start running way rougher so idk.
maybe you can add one of your older centrifugal superchargers to it instead of the roots blower? with only the one turbine it shouldnt have any collision issues.
The fuel cut out seem strange, not sure if it's from fuel sloshing, the stall at 5:47 seems sus, like it should have settled it was in a straigt pull for long enough, make sure primer line from exhaust to tank doesn't crimp/kink, it's sounds like it doesn't want to run on the main jet, also this thing could be susceptible to vapor lock?
very exciting V8 sound! great work!
I would love to see new rotors for the supercharger!! There's so many videos out there with little superchargers and turbochargers for micro engines like this and none of them ever work. it's so sad I want to see one that works. you can do it!!
Sounds just like a V-8, only smaller ..
Nice Talent you have sir .. Please continue to share that talent with the world ..
The scoring on the inside of the supercharger housing looked like it was towards the center, so the rods holding the rotors might be bowing from a slight imbalance when they spin fast enough. Someone mentioned one-piece rotors, so that might help a rigidity issue. If that's what's actually happening.
I bet that felt great getting it out for a spin congrats bud awsome work
@JohnnyQ90 - just a thought: set up the throttle and clutch actuations on the same servo (or multiple servos from the same channel) - as you give it more throttle, the clutch starts to engage, and as you let off, the clutch disengages. This would take an incredible amount of fine tuning, but I’d imagine would work extremely well, but still provide that realistic functionality you’re looking for.
Thank you good sir for making our dreams come true! 🙏🙏🙏 A V8 RC... 😍 What a great set if skills you have!
It has a terrible understeer, the car doesn't want to turn. And if you apply too much power, it immediately oversteers.
I suggest you check your differential (if exists) . This issue causes extra load to your engine and clutch while turning.
The car came from a long way, and I love how you build it with great effort and create quality content.
Keep on, friend across the pond!
A felt or ceramic fuel clunk may help if fuel is aerating or sloshing air causing it to die.
This guy is smart and clever to figure it out, he knows his car well. Dude built it from scratch
creating a body for the car once it is mechanically sound would be so cool! , it would literally be a mini car! , great vid once again!
stalling- could be fuel pickup location on your tank you are using, also can play with the length of the hose from the exhaust to the tank to help keep constant pressure in the tank.
About the sideways shut-off: could it be caused by the G-force when all the fuel is on one side of the tank?
- Fill more in.
- A little reservoir between in front of or after the fuel pump?
It seems like there is a lot of hope for this project to actually come all the way through. Looking great so far and I can see it getting the last 25 percent improvement and then it probably will be the best rc car of its type on RUclips. It starts, the throttle is responsive and its fast enough to warrant the effort.
Awesome video as always, Sir. Long time subscriber. As an American, I always love seeing a fire breathing V8, in any form. I hope you can get the blower figured out. Keep up the great work Mr. Q90!
Also, it shuts off becasue you need a baffle in the tank(possibly even the carburetor bowls). The G forces involved in that turn are preventing fuel from feeding the carb.
So exciting to see that beast off the chain and thrashing about! Just like any scratch built DIY project, things are going to happen. I have 100% faith that you will work out the bugs.
Looking forward to the next update!!
I can only imagine how long it took you from concept, to making this video of it driving. R&D is an unimaginably arduous task of success & failure, until you get to the point of consistant successive runs of pure V8 stomping runs of smiling, until your face hurts.
Some people think making these "toys" is a waste of an adult's time, energy & resources. What low brain wattage floofs don't understand is, this is the very type of activity which gives some of us a reason to wake up on the weekend mornings.
Never stop researching, developing, assembling, testing, & succeeding!
Excellent stuff! I think you might benefit from a baffle or two (or foam) in your fuel tank.
Johnny, on nitro engines, we have to apply pressure to the fuel tank via a line from the exhaust. The impulses form the exhaust muffler pressurize the fuel tank.This will keep fuel flowing to the carbs and prevent leaning out due to fuel slosh.
Very impressive setup. It's hard to believe a V8 could be so small and well deigned. It looked so cool drifting and spinning tires. 👍🏁🏆
Whats the plan for the body? Some light weight metal perhaps to keep any plastic from melting?
Dry sump tanks in race cars are tall to prevent the oil pick up in the bottom from being uncovered. You need to do the same with your fuel tank; taller talk will prevent the pick up from pulling air. Great work!!!
Δεν περίμενα ότι θα έβλεπα τέτοιο διαμαντάκι στην πόλη μου! Πολλά συγχαρητήρια!
what's your city?
If you add a pressurized fuel rail system with like even 2 or 3 psi it would prevent it from shutting off when starved of fuel. I noticed its fuel delivery when it didnt fully die after turning and when you throttled it, it was already leaning out and it was to lean to get the fuel to create combustion again.
Hey, here's an idea. Keep doing what you're doing, as long as you are having fun. I enjoy watching a builder working things out and growing a skill set. Hopefully, some sponsors will help with more tools and connections to push you more. It was my first time watching you, and subscribing is not a question for me. Subscribed. It would be nice to see you in the comments if you have not already.
It would be interesting to spin the supercharger at operating RPM without the engine, to see how much air it moves. I think these tiny engines are too small for forced induction to work properly. And I think the tolerances are probably just good enough for them to run, I think any substantial level of boost would bend things or just end up being lost as blow by. I'd love to be proven wrong, though. "2 Stroke Stuffing" gets an astounding amount of power out of a 50cc engine, but that's only one cylinder, and it's actually designed for vehicular use.
glad to see it finally roam free on the ground! all that work!
That clicking sound made EVERY car guy wince. Anytime something mechanical makes that noise it's normally not a good thing.
Might wanna do a teardown and inspect of your engine if the supercharger has that much scoring and if you have been running it all that time. Would you be able to modify the rotors to put teflon seals on the rotors?
That's absolutely epic!!! Great job man!!🙌🏻👏🏻
can you please explain why you measured the rpms when determining if the supercharger actually did something? shouldn't they stay the same due to the gearing? i'm genuinely curious, i'm new to the world of rc cars
Obviously adding any kind of boost, will not increase the rpm of an engine. What I did, was to show how easily the engine performed N/A (1,100rpm), but with the supercharger it reached slighly lower rpm, which to me, is an indication that it didn't actually do anything, as it should have the same rpm as in N/A form. Even if the supercharger was adding any power, it wouldn't be for too long, as it started self destructing.
@@johnnyq90 ooohhh ok, that makes sense. Love the project btw, keep improving the car 💜
There was another channel on here that built a custom ECM for one of these engines that made it run so much better, you can tell by how it sounds especially when trying to rev up that it sounds starved. It would be pretty sweet to see a collab between you two. It would really wake this thing up.
ruclips.net/video/42VEqDA4rHg/видео.htmlsi=5pkgYZKPLDwCbvma
Sweet! So glad you're at the testing phase. I've been watching the build process and am REALLY IMPRESSED!
I don't know if anyone has mentioned it yet or I may grant forgotten if you already thought about this, but have you implemented some runaway protection? You know, how to make the car stop if it loses contact with the radio while under full throttle. Always an issue with nitro RC cars.
So cool to see this thing moving under it's own power. I'm sure you'll find solutions to the current issues rather easily. The supercharger is definitely a symmetrical issue. Most full sized one you will see the rotor is twisted which not only generates more force of airflow but also is kind of an aerodynamic effect. The doesnt help that the rotors are only held on at one end. Being fixed at both ends and better designed rotors will fix that issue as far as i can tell. I believe the engine shutting off is a combination of things mentioned by other people about fuel pressure and lack of torque from the engine when the wheels stop turning when sliding. Keep up the awesome work. Your channel is definitely a satisfying watch.
As far as ive Seen the rotors are Held on both ends.
It's amazing that you got this to work as well as it did. Well done.
I wonder if knurling the mating surface and pressing the clutch material on would help the two parts stick better? with or without adhesive, im not sure
Wonderful progress Johnny sounds like a nascar
Right on!!!
I'd add a baffled fuel cell to the list too, maybe put some foam in there and or make something custom with a baffled swirl pot built into it, the sort of thing you see on drag cars. The sudden direction changes and inertia were visibly causing the fuel to climb up the side of the tank which as the fuel goes down are probably starving the feed line.
I think the stalling is many things at the same time.
- low torque at low rpm. You either need to have the clutch slip or do a burnout to maintain enough engine rpm. Your lose all speed forward which forces the wheels to stop. You don't have enough gears in the gearbox to help keep the engine rpm.
- add some baffles in the tank
- consider some exhaust to add fuel pressure.
Great video. But maybe not so great for the supplier of the compressor. It did have issues even before you installed it, being silent in only one direction. They need to step up their manufacturing quality and testing.
Agreed. I still think a centrifugal clutch like a typical nitro car would be the best option.
@@N301RCSTREETOUTLAWS Yes, having automatic clutch slip at low rpm makes life easier.
Never though i would ever see a miniature working v8 engine on a rc car , but here we are. This is the coolest shit i have ever seen
make it loud
He should learn to drive it first!
@@mrtambourineman6107 no, make it loud first
Using the exhaust to pressurize the fuel tank is good. Putting partitions with small holes into the fuel tank might help with stalling when sideways. that way the fuel doesn't slosh around as much.
Very Cool!!! Such a unique sound for an rc!
How much did the permit cost to use that parking lot?
You could fill the gas tank with race foam it prevents the fuel from sloshing around
Sorry if this is random but I was wondering about getting a mini lathe (more like micro) I saw some for sale on stirlingkit and was wondering if they are any good, or could be upgraded to be good. The website shows your channel name so I thought I’d ask you. Thanks
This thing's gonna burn some rubber 🔥🔥🔥
What about single piece nylon supercharger rotors? Lightweight, smooth and hopefully sealing nice
So freakin cool bud. That definitely has some power. It sure is nice to have that starter on the remote. I used to have to run up and pull start mine lol. But it was also a 1 cylinder tiger 21 motor. I think thats what it was called. This is just too cool bud. Well done.
through some dowels through the rotors so they stay put. thread the ends so you can secure them. It might help the rotors not contact the housing since it won't be able to deform the aluminum at high rpm.
It’s binding the transmission when you are sideways. There isn’t enough power to keep the wheels spinning so like any manual transmission it’ll stall out at low rpm. I have schematics of a two speed
Μπράβο φίλε ,
Πάχη
Συνέχισε έτσι,
Και πάλι μπράβο 👍🇬🇷
Increible, el récord, qué dejaste en Londres.
esperó que tarden mucho en superarlo!!!!
FELICIDADES!
I think a 7.5cc nitro engine 1 cilinder wil outperform all those toyan engines. Sad but treu. I still love it that you try making them work!!😍
As far as I always understood, a charged air system is not there to increase the RPM's but to increase the power out put, i.e. to reach that max rpm even when the engine is under load.
free spinning it on the roller bank doesn't appear to apply a load to your set up. or am I wrong here?
this is one of the coolest things ive ever seen
I think it stalls because it's loading the engine to much and bogs, either from being to lean or to rich, to test if it's slosh tilt it sideways?
You could always try porting it as well as a low pressure fuel pump so it never starves. also larger jets if you wanna commit to the super charger, more air needs more fuel (you could've already done that but I'm a lil dumb)
The comment about the tank needing to be pressurized is correct. They flow a lot of fuel at WOT, and the diaphragm pumps in the carbs can't keep up with it unless you have some tank pressure. You might look into sintered bronze for your clutch basket. The hotter it gets, the better it works. You may need a bit stronger return spring though.. Other than that, pretty good run for the 'first' time out!!😄👍👍
wow, amazing how much it drives and sounds like a real car!
Would putting pressure from the exhaust to the tank help with the stalling? Kinda like they do or did with the 2 stroke RC engines? Just a thought. I could and probably am way off base though. Either way, still an awesome video and car. Thanks for sharing.
seems like its stalling when you spin out from lack of torque? amazing work!
Rotors misaligned as you pointed out 1:10. They are 5mm holes in those rotors, get yourself 6 lightweight dowels of equal length and loctite into those holes.
I feel like there is way too much restriction on the supercharger. The little boost you are making is going right into forcing all that air through 2 tiny outlets. You should try making your own manifold with way more flow and opening up the bottom of the supercharger to let it breathe. If you have the patients for it, a twisted pair of rotors would also help and a larger carb.
I think the problem with that blower might be that it’s not creating enough boost and has too many issues. You should try centrifugal instead. Lots of ones already out there that you can make fit and work fine.
Круто получилось, осталось только корпус подобрать и будет пушка 👍
Круто я не один русский смотрю этот канал
For the clutch how about making a flat flywheel and using mountain bike hydraulic disc brake pads as clutch pads using that pivot you already got to push 3 or 4 pads against a flywheel.
I wonder if you can have a throttle mix setup for the clutch to engage and disengage when the throttle is at 10-15%. That way, you should be able to have the engine run without the clutch staying engaged when you put on the brakes.
Btw, congratulations on a successful test run! I've been dying to see this come together for years now! I can't wait to see the final episode on the car.
This is the best thing on RUclips.