I can't believe the first time I saw a spoof photo of "piston return springs" I thought to myself " Jesus Christ I've never seen these before, or even heard of them" and then I realised 😂
"Board is being a twat straight away" Matt, please bring back the blackboard. You barely even got the chance to use it at your previous place (congrats on the move BTW) Plus I wanna see your reaction again - a fully grown man having a 'crisis' upon rediscovering chalk LOL that was hilarious!! Cheers, and congrats once again.
Dude/Mate you’re like the manly version of “engineering explained” 🤣I’d rather watch your vids than his. Especially the arse-kicking attitude, Red Bull drinking, old school cigarette, and sailor mouth. This is on another level🤣🤣🤣
Delboy watches this vid. Immediately advises his loyal fans to drill a hole in the top of their crank cases - using a drill bit modified to his special angles...! ;)
would be interesting to calculate the losses from the extra electrical load of the dry sump system vs the pumping losses it is trying to negate. I''d wager that running the extra pump would actually load the engine more than reduction in pumping losses. Though would still be too small to feel
I know I'm wrong, cuz I'm not a qualificated injunear, but surely in a 4 cylinder, 1000cc engine, there are 2 pistons going down, 'pumping' 250cc's each into a crankcase full of dense, oil misty air, that with positive crankcase ventilation is being sucked on (not off) by the inlet; and at the same time 2 pistons are on their upstroke also causing a partial depression.... so this 250cc's is just moving across between cylinders 1 & 2 and 4 & 3 and back again, ad infinitum. OK it's 'pumping', but I don't think your fancy mathematics takes into account all the restrictions and flow paths. Your negligible 0.028 HP figure is possibly bigger than reality. Thank you for one of the most enjoyable wasted 20 minutes of my life.... please keeps these vids coming :-)
Does this mean that a twin cylinder engine with 180 degree crank is swapping air between the underside of each piston? If so where does an engine with a 270/90 crank store the pressure? or does it squeeze it out and suck it back in again? Via the airbox breather??
Good to see you back, doing the proper engineerding. So me worrying about a crankcase breather catch can versus recirculation is a load of nonsense then. Catch the crap. Don't stuff if back in the intake where it just gets in the way, ignore the pumping losses. Cheers, R. 🙂
Hiya Matt, good to see you back in the game. I race a little Laverda air cooled 500cc twin in classic racing. I come across quite few people using various fuel combinations, some of the older bikes use methanol fuels and veryhigh compression ratios. There soem people that run mixtures of high octane petrol and avgas. Have you ever done anything about how these fuels behave in normally aspirated motors. I am told that using avgas mixes it burns much cooler but slower than ordinary high octane petrol. I can buy ridiculously expensive very high octane drums of petrol but don't understand what the benefits may be. I get the usual BS of "bigger bangs means more power" after watching a lot of stuff covering various topics on port design, compression ratios, valve angles and sizes etc. Might be a good topic for your new set up and help me understand WTF is going on
Depending on the crank setup though couldn’t you have one cylinder going up on compression or exhaust stroke creating a lower pressure region at the same time that the other piston which is on its power or intake stroke creating that positive pressure. My question is would the two pressure regions just move the air and lessen the forces?
Never thougth of this matters ( and would probably never do again ) but it could be posible at least as an empiric aproach to use compresion in 4stroke engines to boost the piston in its compresion stroke, it be fisable in a way to crate a compresion behind the piston to make it go faster into compresion like a steam engine does every stroke a power one .
Matt..This had me Thinking of why my 02 sv-650 slows so much faster off throttle than any of my 4-cylinder bikes.Sure your sv-1000 had similar traits..?..Something for a future vid I hope..good stuff..back in class....Cheers..!
From what I can remember from my aeronautical engineering course, that drag equation is for a body moving through air that isn't being compressed due to the velocity of the object. Is the equation appropriate for the air being pushed into the crankcase by the motion of the piston?
Just a few Things: If you want to half something you multiply it by 0,5 (like you said) not divide it by 0,5 (like you wrote) Integrating the Force over degrees of crankshaft rotation looks weird to me. Its not wrong but integrating over the stroke lenght to get Energy lost/ produced seems to be better (to me at least) because you dont use the same unit Newton to describe different things. Other than that great to see someone doing the math.
Would the vacuum effect on the crank case pressure of the pistons on the up stroke reduce the effect of the losses in the in the down stroke so the 0.028 hp loss would be even less?? basically as the pistons on the down stroke pusshed air into the crank case the pistons on the up stoke would be pulling it out ??
This video made me think of the engineer who tried to market a five stroke design. I haven't heard anything else about it. When I first heard about it I knew he would have issues. At the same time do you think with the correct design that a 5t would be possible?
Stupid question. In a 4cyl engine you've got 2cyl moving up at the same time as the other 2cyl are moving down. Wouldn't the negative pressure behind the rising pistons negate the positive pressure from the falling pistons. Making the pump loss issue a moot point anyway?
Hey Matt, is this just a different approach to integrating P x dV throughout the cycle to obtain the gross/net mean effective pressure and therefore the pumping MEP?
Don't know if we are on the same page here. MEP is basically torque (or energy/work per cycle) normalised by the displacement, and the torque figure you use is just a mean torque over the cycle chugged out by the dyno, no? Maybe I need to wait for part 2 to see the full picture on this. It just seemed odd to me cause I haven't seen this methodology in ICE textbooks like Heywood (my background is mainly academic, nowhere near the hands on experience you have). I'll do some rough calculations maybe tomorrow, just out of curiosity to see if we get similar values. Thanks!
"MEP is basically torque (or energy/work per cycle) normalised by the displacement" - Well no. Work and torque are not the same thing. "the torque figure you use is just a mean torque over the cycle chugged out by the dyno, no?" - Yes this bit is correct. The problem with MEP or IMEP is that it's over 1 cycle, which means both the down and UP stroke. This could be used for comparing one engine against another, but that doesn't help us here. This is working out how much resistance there is vs another system, for instance a vacuum pump. In other words lets say you use MEP values. This gives you an average pressure, lets say 1.46 MPa and we want to pump the crankcase down by 50% so from 0.1 to 0.05 MPa. The issue here is that the force (drag in this case) is the square of velocity. But this wouldn't be as the 0.05 MPa remains constant. So the calculation is heavily dependant on rpm.
Thanks for coming back to me man. I now see what you're talking about and why you can't apply MEPs. I suppose university courses are too focused around what happens in the cylinder (i.e. the energy required to pull air in/out of the engine) and not too worried about the crankcase side, where you cant apply the same principles. Crankcase ventilation is a topic I'd love to see a video on, if you already don't have one (a quick search did not give me any). Cheers, Chris.
Total bollocks and don't believe anyone when they say that. The electric motor needs, well electricity, and where does that come from? That's right, the engine
Aren't there also other pumping losses on the down stroke (located above the piston) related to drawing in the fuel air mixture? A reduction in pressure has to be created above the piston to allow atmospheric pressure to push in the fuel air charge.
A lot of the small bore (250cc) motocross teams are running A electric battery type water pump… Really seeking .1 of hp Where as the 450 teams aren’t running them and just happy to take the losses of drag in 2022 Maybe a real advantage Maybe a option to sell pumps to the public!
Electric water pumps are used in sport for long time already. I don’t see much benefits of them in road races, where they are mostly used. But for enduro races to have RPM independent pump is beneficial. Also you can keep optimal temperature in wider weather conditions. When temperature is -5C for example it is impossible to keep engine warm with conventional system(and if no bypass valve as on most dirtbikes)
Hey Matt. I have an idea for a video that is a personal pet peeve of mine; air box mods. I'm actually surprised that you haven't touched on it - at least no videos that I could find anyway - considering all of the videos here on RUclips as well as forum posts regarding such stupidity. Such mods are particularly prevalent in the dual sport arena. Could you perhaps explain to the special needs section of the class why cutting holes into your air box doesn't increase air flow to the engine? There's a whole host of issues you could address with that particular topic, and I'd very much look forward to it. Cheers wanka.
@IN THE SHOP Like I said previously, I looked, just looked again, still nothing related directly to "air box" or "airbox", so either it was a side topic of a video, or unrelated to the video title so in order for me to find it you'll have to hook me up with the title, otherwise it's lost in the clouds.
@IN THE SHOP Perhaps you are referring to his "Do you really need an AIR FILTER?" video? He mentions holes and air boxes at the start so I would assume so. In my defense that vid was 2017 and I was expecting a video from months ago given your "while back ago" description. xD
Why the fuck do you not start to lecture because you talk simple language Students would just love you and probably pass all the exams win win Go for it Matttttt !!!!!!!!!!
A better example of a real engine would be a BMW 650 single with a dry sump. But as you intimated, it’s antiquated long stroke V twin agricultural vibrators from Milwaukee that suffer most from chronicwankloss. But we don’t need to care about them since Ewan McGregor and Charley Boorman are heading Harley-Davidson’s rescue strategy: don’t just buy one HD electric vibrator, buy two, and have a support team following you around in a van with the spare bike and a mobile generator...! This is how to completely eradicate chronicwankingloss, by pretending to reduce your carbon emissions whilst actually increasing your your carbon footprint exponential! Please don’t try this at home children, it only works for celebrities. 😎
Can't argue with the maths mate but there's gotta be something to this or its just a sheep thing. WSBK officals allowed teams running the Honda CBR600 in supersport to have vacuum systems to try gain some more HP back due to the age of the machine. This system has been banned for yamaha and kawasaki teams. Be interesting to get a real dyno sheet from a highly strung world supersport machine with back to back results.
@@dirtygarageguy Found the banning of it in the tech regs for 2020 in supersport and superbike. Trying to find the info on honda teams being allowed it. Heard it in the commentary last year. Just wondering if its banned because it gives an advantage or just to save teams wasting money on it because others have it.
It depends what they use it for vs what people think they used it for. I might be banned because of dry sump systems. One thing a crankcase vacuum increases is blow-by, which reduces power - not increases it
@@dirtygarageguy not doubting the numbers here but there does seem to be more to it. Theres far too many dyno sheets and stories of people picking up measurable power pulling a bit of a vacuum on the crankcase or getting their crank case pressures closer to ambient. Looking forward to part 2.
The math in here sounds really WRONG! The drag equation is applicable for unconstrained flow. here there is no flow around the cylinder --> NOT APPLICABLE. You attempt of doing an integration is what?? If you integrate over a distance you get work. Alternatively you can integrate torque over an angle to get work as well. How come your units are still Newtons?? alternatively if you are trying to do an average it can not be higher than your peak force.
Sorry just had to add Del's bum boys are on the mark with three last count thumbs down Well done Lad's and Lasses you must still be watching a proper channel so full marks ?
What the feck has this to do with Coronavirus! Everyone is focusing on Coronavirus. I need to go out for a walk and get in the way of every other cnut who must go out for a feckin walk, it's my right. 4am ride up to Oban and back before the Busy's get off their stepchildren required.
Piston return springs are useful in reducing piston pumping losses.
I can't believe the first time I saw a spoof photo of "piston return springs" I thought to myself " Jesus Christ I've never seen these before, or even heard of them" and then I realised 😂
"Board is being a twat straight away"
Matt, please bring back the blackboard. You barely even got the chance to use it at your previous place (congrats on the move BTW)
Plus I wanna see your reaction again - a fully grown man having a 'crisis' upon rediscovering chalk LOL that was hilarious!!
Cheers, and congrats once again.
i only get a few teaspoons of pumping losses and it takes a lot of pumping to achieve the loss.
Pumping losses, sounds like a personal problem.
Do my eyes deceive me or have you re-entered the age of mains power?
Dude/Mate you’re like the manly version of “engineering explained” 🤣I’d rather watch your vids than his. Especially the arse-kicking attitude, Red Bull drinking, old school cigarette, and sailor mouth. This is on another level🤣🤣🤣
Delboy watches this vid. Immediately advises his loyal fans to drill a hole in the top of their crank cases - using a drill bit modified to his special angles...! ;)
Forgot how much I enjoy your videos. Hate to admit it, but I had to take a break. Not your fault, mine. Glad I'm back in the groove :)
Love this vid. Its just great. It reminds me of the port velocity videos where you go into crazy detail.
would be interesting to calculate the losses from the extra electrical load of the dry sump system vs the pumping losses it is trying to negate. I''d wager that running the extra pump would actually load the engine more than reduction in pumping losses. Though would still be too small to feel
YES!!
My man is BACK!!
Cheers from Sweden
Greetings from Florida
Finally some useful information on RUclips.
Glad to see you back, thanks for sharing
Stay safe, ride safe
It did make sense. Great to see you in a good place and making vids. As for the pumping losses, it made perfect sense.
Glad you back Matt talking sense again.
Oh the whiteness and brightness! Shades on to watch this one.
I know I'm wrong, cuz I'm not a qualificated injunear, but surely in a 4 cylinder, 1000cc engine, there are 2 pistons going down, 'pumping' 250cc's each into a crankcase full of dense, oil misty air, that with positive crankcase ventilation is being sucked on (not off) by the inlet; and at the same time 2 pistons are on their upstroke also causing a partial depression.... so this 250cc's is just moving across between cylinders 1 & 2 and 4 & 3 and back again, ad infinitum. OK it's 'pumping', but I don't think your fancy mathematics takes into account all the restrictions and flow paths. Your negligible 0.028 HP figure is possibly bigger than reality. Thank you for one of the most enjoyable wasted 20 minutes of my life.... please keeps these vids coming :-)
Another great vid Matt. Although what you said is correct you accidentally wrote the drag force equation wrong (*0.5 or /2) 4:00
Cheers
Any new info about those snapping r1 cranks?
........ ok .........
thanks for the upload mate, my head hurts now!
Great video mate! Very informative
Does this mean that a twin cylinder engine with 180 degree crank is swapping air between the underside of each piston? If so where does an engine with a 270/90 crank store the pressure? or does it squeeze it out and suck it back in again? Via the airbox breather??
Normality is returning to the world with a Yorkshire accent 😉
It’s good to see and hear you once again Matt.
how long do you recon you'll last until getting another blackboard?
3 mins in - Fuck It! Way too clever for me.
👍
Good to see you back, doing the proper engineerding. So me worrying about a crankcase breather catch can versus recirculation is a load of nonsense then. Catch the crap. Don't stuff if back in the intake where it just gets in the way, ignore the pumping losses. Cheers, R. 🙂
Yay, Matt's back
You seem like you are in a rush. Does your wife give you a limited time to be in the garage?
We gonna get a video on how to paint a wall soon matt, show del how to decorate an build a workshop?
Glad your back m8, missed the vids
He is back. Awesome as always.
That made sense, see you in a bit.
They apparently have whiteboard markers that work in The North. Must be the freezing temperatures stopping them from drying out.
Hes deffo on a time limit here the lad, rushing like fuck - must have to do the dishes haha.
Rushing?
@@dirtygarageguy Rushing to get back in the house under the mrs' thumb hahaha
Hiya Matt, good to see you back in the game. I race a little Laverda air cooled 500cc twin in classic racing. I come across quite few people using various fuel combinations, some of the older bikes use methanol fuels and veryhigh compression ratios. There soem people that run mixtures of high octane petrol and avgas. Have you ever done anything about how these fuels behave in normally aspirated motors. I am told that using avgas mixes it burns much cooler but slower than ordinary high octane petrol. I can buy ridiculously expensive very high octane drums of petrol but don't understand what the benefits may be. I get the usual BS of "bigger bangs means more power" after watching a lot of stuff covering various topics on port design, compression ratios, valve angles and sizes etc. Might be a good topic for your new set up and help me understand WTF is going on
Depending on the crank setup though couldn’t you have one cylinder going up on compression or exhaust stroke creating a lower pressure region at the same time that the other piston which is on its power or intake stroke creating that positive pressure. My question is would the two pressure regions just move the air and lessen the forces?
thats what i was thinking, any engine with at least two cylinders youd think would cancel each other out but idk
Never thougth of this matters ( and would probably never do again ) but it could be posible at least as an empiric aproach to use compresion in 4stroke engines to boost the piston in its compresion stroke, it be fisable in a way to crate a compresion behind the piston to make it go faster into compresion like a steam engine does every stroke a power one .
Matt..This had me Thinking of why my 02 sv-650 slows so much faster off throttle than
any of my 4-cylinder bikes.Sure your sv-1000 had similar traits..?..Something for a future
vid I hope..good stuff..back in class....Cheers..!
I just install check valves in my pistons, no pumping losses and it allows oily air into the cilinder for a free power boost, win-win!
Is it appropriate to use the drag equation here? You'd have to assume laminar flow and that the system is adiabatic.. Bernoulli equations maybe..?
For simple baseline numbers yes
From what I can remember from my aeronautical engineering course, that drag equation is for a body moving through air that isn't being compressed due to the velocity of the object. Is the equation appropriate for the air being pushed into the crankcase by the motion of the piston?
Thats why the Cd is 1 do bsdically just the area at 100% form drag. All objects compress air ahead of the form
Correct. The use of an equation for a body in free air is totally inappropriate.
Just a few Things:
If you want to half something you multiply it by 0,5 (like you said) not divide it by 0,5 (like you wrote)
Integrating the Force over degrees of crankshaft rotation looks weird to me. Its not wrong but integrating over the stroke lenght to get Energy lost/ produced seems to be better (to me at least) because you dont use the same unit Newton to describe different things.
Other than that great to see someone doing the math.
And thats what impulse is... but what matters is the comparison. Not the units for this example...
Would the vacuum effect on the crank case pressure of the pistons on the up stroke reduce the effect of the losses in the in the down stroke so the 0.028 hp loss would be even less?? basically as the pistons on the down stroke pusshed air into the crank case the pistons on the up stoke would be pulling it out ??
More in part 2....
Matt, wouldn't we also have to count for pumping loss on the piston's up stroke? Does it not "pull" the air behind it on the way up?
Pumping losses cor compression and exhaust is something we'll cover later on
This video made me think of the engineer who tried to market a five stroke design. I haven't heard anything else about it. When I first heard about it I knew he would have issues. At the same time do you think with the correct design that a 5t would be possible?
Looks like you've been pumping Iron💪🏼
Naitra Naitra thats just a woman’s cooking and a puffy jacket 🤣
Stupid question. In a 4cyl engine you've got 2cyl moving up at the same time as the other 2cyl are moving down. Wouldn't the negative pressure behind the rising pistons negate the positive pressure from the falling pistons. Making the pump loss issue a moot point anyway?
Have I walked in on some Northern version of "Engineering Explained" ?!
Has Dell let you use a corner of his garage?
Interesting. Cheers for the video bud :-)
Did you remix the intro? Sounds fuckin good man.
nice to see yea mr-Matt :-)
Hey Matt, is this just a different approach to integrating P x dV throughout the cycle to obtain the gross/net mean effective pressure and therefore the pumping MEP?
No, because that doesn't give you energy, and thats what matters. Pressures are static and means are the death of engineering.
Don't know if we are on the same page here. MEP is basically torque (or energy/work per cycle) normalised by the displacement, and the torque figure you use is just a mean torque over the cycle chugged out by the dyno, no? Maybe I need to wait for part 2 to see the full picture on this. It just seemed odd to me cause I haven't seen this methodology in ICE textbooks like Heywood (my background is mainly academic, nowhere near the hands on experience you have). I'll do some rough calculations maybe tomorrow, just out of curiosity to see if we get similar values. Thanks!
"MEP is basically torque (or energy/work per cycle) normalised by the displacement"
- Well no. Work and torque are not the same thing.
"the torque figure you use is just a mean torque over the cycle chugged out by the dyno, no?"
- Yes this bit is correct.
The problem with MEP or IMEP is that it's over 1 cycle, which means both the down and UP stroke.
This could be used for comparing one engine against another, but that doesn't help us here. This is working out how much resistance there is vs another system, for instance a vacuum pump.
In other words lets say you use MEP values. This gives you an average pressure, lets say 1.46 MPa and we want to pump the crankcase down by 50% so from 0.1 to 0.05 MPa.
The issue here is that the force (drag in this case) is the square of velocity. But this wouldn't be as the 0.05 MPa remains constant. So the calculation is heavily dependant on rpm.
Thanks for coming back to me man. I now see what you're talking about and why you can't apply MEPs. I suppose university courses are too focused around what happens in the cylinder (i.e. the energy required to pull air in/out of the engine) and not too worried about the crankcase side, where you cant apply the same principles. Crankcase ventilation is a topic I'd love to see a video on, if you already don't have one (a quick search did not give me any). Cheers, Chris.
👍Matt, I can guess who designed that in one word. hayabus ! ha ha 😂 from R1 Greg 🤪
11:25 Is Joules going to be Isaac's replacement? Do we really want to know about your impulses?
We need pumping losses of the water pump now as iv seen a lot of talk that a electric water pump can save 7hp
Total bollocks and don't believe anyone when they say that. The electric motor needs, well electricity, and where does that come from? That's right, the engine
True but not on my race motor running total loss.
Would you not get more of a loss pushing it though the breather pipe ,just nit picking lol
Hey Matt have you seen Cosworths 3 cylinder theory to make the v12 engine just love your thoughts on this one its on you tube ??
I forget, is the engines CC the swept volume or the actual volume of the cylinder head and piston at the bottom of its stroke?
It's the swept volume X the number of cylinders..
Interesting, the head space isnt taken i to account at all in the displacement?
@@WikWak well that amount of volume isnt really being displaced?
@@mitchellbaker4847 obviously it can be under certian circumstances, but i get what you're saying.
@@WikWak no, combustion chamber is not a part of engine displacement.
👍 Great video
Aren't there also other pumping losses on the down stroke (located above the piston) related to drawing in the fuel air mixture? A reduction in pressure has to be created above the piston to allow atmospheric pressure to push in the fuel air charge.
No, that's not how it works.... more in part 2
@@dirtygarageguy looking forward to part 2
Matt do a wheelie video 😂
I thought Moto GP bikes or Formula 1 cars vacuum the crankcase to reduce or eliminate pumping losses.
Maybe, maybe not.
Same as in car drag racing engines.
Have you already planned making your "own" Isaac?!
Bolts a 20lb dry sump system to an engine to recover a fraction of a HP. = Stupid fast.
Dry sump is primarly for engine safety, not powah.
A lot of the small bore (250cc) motocross teams are running A electric battery type water pump…
Really seeking .1 of hp
Where as the 450 teams aren’t running them and just happy to take the losses of drag in 2022
Maybe a real advantage
Maybe a option to sell pumps to the public!
Oil pump
Water pump
And piston drag all adding to
Losses that is
Electric water pumps are used in sport for long time already. I don’t see much benefits of them in road races, where they are mostly used. But for enduro races to have RPM independent pump is beneficial. Also you can keep optimal temperature in wider weather conditions. When temperature is -5C for example it is impossible to keep engine warm with conventional system(and if no bypass valve as on most dirtbikes)
Hey Matt. I have an idea for a video that is a personal pet peeve of mine; air box mods. I'm actually surprised that you haven't touched on it - at least no videos that I could find anyway - considering all of the videos here on RUclips as well as forum posts regarding such stupidity. Such mods are particularly prevalent in the dual sport arena.
Could you perhaps explain to the special needs section of the class why cutting holes into your air box doesn't increase air flow to the engine? There's a whole host of issues you could address with that particular topic, and I'd very much look forward to it.
Cheers wanka.
Already doing an airbox vid as we speak with a real airbox and those wankers from tst
He did a vid a while back ago on the topic. It is worth looking for it.
@The Workshop Sweet, looking forward to it.
@IN THE SHOP I'll see if I can find it.
@IN THE SHOP Like I said previously, I looked, just looked again, still nothing related directly to "air box" or "airbox", so either it was a side topic of a video, or unrelated to the video title so in order for me to find it you'll have to hook me up with the title, otherwise it's lost in the clouds.
@IN THE SHOP Perhaps you are referring to his "Do you really need an AIR FILTER?" video? He mentions holes and air boxes at the start so I would assume so. In my defense that vid was 2017 and I was expecting a video from months ago given your "while back ago" description. xD
After fathering two children I have experienced quite a bit off pumping losses.
White board, on a white wall. Feel like I'm back in school.
Yeeeeah.
Was hoping the title was click bait and you were going to discuss Dels' clusterfuckery.
Girlfriends basement methinks? Just get some boards with carpet on them up in the corners to act as sound baffles.
Already doing that today LOL
@@dirtygarageguy Excellent! Leave it to the Tharg! :)
like bein back at school.sir can i go to toilet
If the losses are so small why do the ProStock Dragbike boys all have a vacuum pump?
Dry sump systems, mainly for fire safety and lowering the centre of mass
👁️♥️👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍
0.028hp, * 4 cylinders =, 0.112HP, = 83W, about the same amount of power it look to run the fluorescent tube in that room whilst filming.
It's not * 4 - Watts is time based and is Joules per second...
@@dirtygarageguy bugger.
Why the fuck do you not start to lecture because you talk simple language Students would just love you and probably pass all the exams win win Go for it Matttttt !!!!!!!!!!
A better example of a real engine would be a BMW 650 single with a dry sump.
But as you intimated, it’s antiquated long stroke V twin agricultural vibrators from Milwaukee that suffer most from chronicwankloss. But we don’t need to care about them since Ewan McGregor and Charley Boorman are heading Harley-Davidson’s rescue strategy: don’t just buy one HD electric vibrator, buy two, and have a support team following you around in a van with the spare bike and a mobile generator...!
This is how to completely eradicate chronicwankingloss, by pretending to reduce your carbon emissions whilst actually increasing your your carbon footprint exponential!
Please don’t try this at home children, it only works for celebrities. 😎
Where's the chalkboard
Didn't click on the video csuse ofnthe title, I clicked to hear your sexg northern accent
😜👍
Can't argue with the maths mate but there's gotta be something to this or its just a sheep thing. WSBK officals allowed teams running the Honda CBR600 in supersport to have vacuum systems to try gain some more HP back due to the age of the machine. This system has been banned for yamaha and kawasaki teams. Be interesting to get a real dyno sheet from a highly strung world supersport machine with back to back results.
Got any links for any of this?
@@dirtygarageguy Found the banning of it in the tech regs for 2020 in supersport and superbike. Trying to find the info on honda teams being allowed it. Heard it in the commentary last year.
Just wondering if its banned because it gives an advantage or just to save teams wasting money on it because others have it.
It depends what they use it for vs what people think they used it for. I might be banned because of dry sump systems. One thing a crankcase vacuum increases is blow-by, which reduces power - not increases it
@@dirtygarageguy not doubting the numbers here but there does seem to be more to it.
Theres far too many dyno sheets and stories of people picking up measurable power pulling a bit of a vacuum on the crankcase or getting their crank case pressures closer to ambient.
Looking forward to part 2.
The math in here sounds really WRONG! The drag equation is applicable for unconstrained flow. here there is no flow around the cylinder --> NOT APPLICABLE. You attempt of doing an integration is what?? If you integrate over a distance you get work. Alternatively you can integrate torque over an angle to get work as well. How come your units are still Newtons?? alternatively if you are trying to do an average it can not be higher than your peak force.
2
Sorry just had to add Del's bum boys are on the mark with three last count thumbs down Well done Lad's and Lasses you must still be watching a proper channel so full marks ?
What the feck has this to do with Coronavirus! Everyone is focusing on Coronavirus. I need to go out for a walk and get in the way of every other cnut who must go out for a feckin walk, it's my right.
4am ride up to Oban and back before the Busy's get off their stepchildren required.
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Best crack some eggs then
Hey are you in a new place like Del boy ??????????? Things don't look the same what the F...k?????????????????
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