If you put vacuum on one side of the cylinder, two things will happen. First, cavitation. There are two ways to boil a liquid: heat, and vacuum. Second, if you put one side of the piston under vacuum, the resulting force comes from the atmosphere PUSHING the piston, for a maximum pressure differential of about 14.5psi. Your hydraulic pump obviously delivers a lot more pressure, and doesn't try to boil the fluid while it works.
Use the vacuum to remove the air add a hole to hook up your compressor. Then open the valve on the compressor pushing air into the vacuum behind the ball .
Shop I used to work in built cylinders. If you put a fitting at each end, with a selector valve each side would be pressure and the opposite would drain. Just like a log splitter.
@misadventurelab That scissor lift and the ram had lots of limitations, if your frame isn’t perfectly straight (not parked evenly) when you operate it, it can cause twisting and binding, (I have more than 50 home built dump trailers under my belt) long story short… a simple hinge on the left and right frame on the back hooking to the bed, than 1) 16” ram on each side to lift the bed would make the bed lift and lower evenly regardless the angle of the truck or parking position, cal-ranch has everything you need, aside from the pump itself, you should only be into parts $300 in grand total!
“You can’t make a sound in a vacuum!” And then there’s the staged creeper and bit set for kicking and stepping on! Trevor is hilarious! Tucker is an excellent editor!
You guys never cease to amaze me with your hilarious antics. That "protective" outfit that Trevor wore when "firing" the tennis ball really made me laugh out loud! Look forward to seeing the mini offroad rollback finished!
It's awesome seeing both of you, honestly some of my favorite dudes from Matt's channel I don't miss on his channel because y'all are so much better doing your own thing. 2:15 - I'd throw something at em' from across the shop for that one. Freakin' amazing response, I actually laughed.
I think that vacuum on the single-acting cylinder resulted in the seal leaking. It's designed to hold fluid in, not keep air out. Once a little air gets in, the hydraulic pump can't function properly. But I know that you guys, along with Rudy and Zach, will work these issues out. "Misadventure Labs, overcoming physics one molecule at a time". 😊
I recommend y'all use a winch, cable and pulleys to move the bed back and forwards. Use a standard electric winch as a capstan and have springs provide tension on the cable. Mount a buffer battery and a 2nd winch on the tilting bed to pull vehicles up the ramp.
Why not just mount two hydraulic rods in parallel, one to push up and one to push down? That's assuming, of course, that you can't use gravity for the down direction, as many, many applications do. And vacuum to operate it? Really? Do you understand why hydraulic fluid is used instead of air in the first place?
Gotta ask Tom Tom, as he has the mechanical engineering degree and he can tell ya what to do! I’m just a dumb ole electrical engineer and we don’t pump oil….
2 minutes in and saying NOPE, this is not how things work. You might get enough to move the Pison, but under load stull is going to fail, Hyralic lines work under pressure not vacuum, aka they will collaps, for starters, other things come into play Never tried it buy you should have just drilled connected on the OTHER SIDE, like a REALY hydralic piston. Guess I should watch what happens now. [edit] Oh, well that didn't take long
A genuine real laugh when the ship fell off the wall after Trevor's expert installation. Discount mythbusters with the three ex morrscuteers is hilarious. More Rudi please, he does go well with Trevor and Tucker. BTW watch out for the garage creeper, Trev. Gday from Australia. :)
3,2,1.. you sunk my battleship 😂 gold Years ago i worked in a frozen chip factory.. endless ammo... Needless to say the old shop compressor and reservoir made a great spud gun on wheels..😁
I’m just glad I don’t have to pick up all that glass!! 😱 You guys are hilarious! Oh dear! Trevor is going to need a back adjustment after that trip! 😳 Hope you weren’t “tweeked”! Can’t wait to see the finished little truck!
With a tight seal around the projectile, you needed to pull a vacuum on the tube in front of it. This decreases the air pressure that acts as a spring, stopping the ball before it leaves the barrel. The best results will be if you use the dump-tank to rupture the foil seal after the tube in front of the ball has been vacuumed. I can't wait to see further testing and dummy damage. Keep up the good work. Love your channel.
Rather than using a hydraulic ram have you considered using a ram with a wormscrew? And regarding your ping-pong ball cannon you need to find one of last few episodes of Mythbusters. They did what you are trying to do. They were able to severely damage a side of pork (analog for a human) with a ping-pong ball. IIRC their ping-pong ball reached several hundred MPH.
Watching the first few minutes, I was thinking “I wonder what Supply Center has in stock right now?” Lo and behold… Supply Center had some DC linear actuators a couple years back (12v or 24v or…?) from some sort of solar panel apparatus that had a working rating of 6000+ lbs. which probably would’ve also worked for your application. I was going to make a lift table that could double as a forklift, but I missed out on them.
I’d just like to say: I am waiting with bated breath for a hair update video. I just scheduled my appointment yesterday for Estenove. July 9th boys!!!!!
Suction depends on a vacuum. In a vacuum you can only get 1 atmosphere of “pressure” (I.e. vacuum). With a pressure device there is essentially no limit as to how much effort (pressure) you can generate. One atmosphere is about 14.7 psi, which is all you can get with vacuum actuation.
Single versus double acting cylinders in hydraulics. Single acting cylinders need an additional force to compress, be it gravity or a return spring or something. Double-acting cylinders pump into the other end, pushing the rod back to it's starting position. The reason vacuum isn't involved could be attributed to diameter reduction from the vacuum (not likely), directional seals (unlikely), or the hydraulic fluid vaporizing (very likely). Pneumatics don't have this problem because there is no fluid to vaporize. Chances are if you hooked up Rudy's original design, the weight of the tilt tray itself would have helped the thing work a bit better, but if you were trying to cantilever a load up off the ground you would have run into one of the issues above.
The seals only work one way. When you push fluid in on one side, the seal "pushes out" and effectively blocks the oil, pushing the cylinder. When you suck on it, it pulls the seal and allows air to come in the other way. Double-acting cylinders have seals facing both directions (effectively). Some do it with O-rings as well (or additionally). Think of a crank seal on an engine. What happens when you put it in backwards?
The fluid is made to handle pressure, not VERY HIGH vacuum. The fluid needs to push to work, never pull. Think of it like a rope in reverse, you can pull a rope and apply force all day long, but try to do the opposite and push the same rope. You're not going to get very far.
You guys aren't old enough to remember this; back in the early 70's, we used to take 5 or 6 beer cans, cut each end out, then duct taped them together, we drilled a hole in the last can that had an end to it, We inserted a tennis ball, squirted lighter fluid into the hole in the bottom end, then we lit a lighter to the bottom hole, and then BOOM!!! The tennis ball shot out. It would go about 100 yards in the air. Several years later, the potato launcher was invented - that was fun too. BTW, we did live through all of this silliness. You guys are too funny. Trevor, watch out for that green creeper! Duck Dynasty of the Desert!
Tennis balls are a poor choice for a projectile. The fuzz both causes more friction and wrecks the seal, letting too much air go by the ball without pushing it. Singeing off the fuzz would help a lot. Any ball that has seams or grooves would have similar problems. Ideally you want a ball that is very smooth and perfectly spherical.
Cavitation maybe(depending on viscosity of that oil, im not sure you could cavitate it enough to matter), but how about check valve, or flow limiter valves? Any ram I've worked around wont let fluid flow back very fast as a safety feature, even if its "released" to return as designed.
Maximum amount of vacuum pressure possible at sea level is about 30 inches of Hg (or psi). Since you are operating at roughly 4500 ft above sea level (Utah), it is going to be less, about 29 psi. Given this, it isn't going to operate a ram at all at that pressure even with no load on it. And yes, cavitation of the hydraulic pump is an issue. There is a reason that they have to use double acting rams in most hydraulic systems that don't have a constant load to retract the ram.
Take some PVC pipe and place a valve stem in the wall. Glue up a chamber with a ball valve at one end and a cap at the other. On the other ball valve side install your barrel. Fill the air chamber with 5 pounds of air, place your projectile in the barrel and open the valve. There are many ways of doing this. It looks like you may have the other end plugged, or your losing all of your pressure out the back instead of in the barrel. Yeah, compressor tank will work.
It won't work cuz the pump has no pressure on the intake side, the pressure is created in the pump. That ram will not work for you because its too long. You need a double acting ram. MAYBE if you were to put another port in it but thats iffy.
Shadetreemetalworks is right: You can only suck about 15 PSI. Much too weak to do any good, plus your seals only work in one direction. So what you need, is one cylinder going in one direction, and another going the other way. Or get a bidirectional hydraulic cylinder, with inlets on both ends.
Don't waste your time with vacuum It will work but will make no appreciable force in one direction. The extend direction force is pressure x area = Force. a hard vacuum is inches of vacuum not PSI a huge difference. you could use a seperate cylinder for each direction but a bi directional is the best choice. Don't forget the force formula the rod diamiter area gets subtracted from the bore diamiter of the return area for a significant reduction in force. Pulling your deck down and pushing the deck up where the cylinder has more power is the best option.
Some things never change, Trevor still trips over😅 Not enough volume of vacuum (if that makes sense) for the inrush of air to fire the ball out of the vacuum gun. Compressed air from the bead seater is the way to go!
The reason it will not work is because the cylinder is a one way cylinder. It's not made for going 2 different directions. It's made for lyft and then gravity closes the cylinder. If it were a two way cylinder , it would have seals and the proper piston for it. And the hydraulic arm would have a port on the top of the side of the arm as well, note, get the right cylinder. 😊
The piston in a push/pull cylinder is different. They have double lip seals in opposing directions and a pressure line on both ends. The seals require pressure on the “inside” (pressure side) of the volume to seal. When you pull the “vacuum” you are actually pulling fluid past the seals and that gave you the goofy bounce trying to get it to close.
Even if you suck out all of the fluid and the seals don't let air in, the maximum pressure you can get is 14.7 psi at sea level. It isn't really suction at all, it's the air pressure in the world pushing.
I knew a kid working in a tire shop years ago, he would take a handful of lug nuts, duct-tape them in a ball, and shoot them across the shop with the beat-seating tank. Pretty dangerous.
Just to add info to what @shadetreemetalworks said and what is in the comments section of his post ( which isa spot on ) you also have the issue of the impellers driving the fluid. Not all impellers and pump housings can pump fluid the opposite direction efficiently.
Now I know why I don’t watch your channel. If you don’t know how hydraulics work then you should not be allowed to play with it. Buy a log splitter and study how it works first before you hurt yourself or someone else.
The reason the vacuum doesn't work is because you can push with as much psi as you want, but you can only suck 14.5 psi at the most since that's atmospheric pressure
3 way valve as your only Pumps not. Sucked so you pump open and then pump close that ram is gravity ram so the inner flange is not made to retractable as it retract on gravity
Air compresses to much thats why you cant use air. So I think you should put another valve on the bottom of the ram and pump in hd fluid one side and pump hd fluid out on the other side so the ram will go in and out .
i belive the hydraulic seals are directional and need the oil to work properly, so if you put the cylinder under vacum they will collapse and let air into the system, so it wont pull anything
We use to make potatoe cannons and use acetylene to fire it when I worked at a scap yard about 30 years ago. We were getting enough power to drive the firewall of a car back about a foot.
So funny story, at my last job at the dealership we had this guy that would stay in the bathroom for a long time on the can, do we fill one of those bead blasters up and fired it off under the door. He said the water came up and hit him in the ass, from all the air pressure that went into the bathroom. It was the funniest thing that ever happened while I was there
If you put vacuum on one side of the cylinder, two things will happen. First, cavitation. There are two ways to boil a liquid: heat, and vacuum. Second, if you put one side of the piston under vacuum, the resulting force comes from the atmosphere PUSHING the piston, for a maximum pressure differential of about 14.5psi. Your hydraulic pump obviously delivers a lot more pressure, and doesn't try to boil the fluid while it works.
Also the seals only work one way. You need dual seals and a feed to the other side of the seal.
👊🏼
What he said. Plus hydraulic rams push both ways depending on which valve is actuated.
Thanks for saving me all the typing. You are spot on.
Use the vacuum to remove the air add a hole to hook up your compressor. Then open the valve on the compressor pushing air into the vacuum behind the ball .
I’ve said it before and I’ll say it again. I’m so glad to see you again Trevor.
Me too
Shop I used to work in built cylinders. If you put a fitting at each end, with a selector valve each side would be pressure and the opposite would drain. Just like a log splitter.
Like Amcus rams for Fire Rescue
It’s because you don’t have a Ram with double ended packing and a 2 stage pump
@misadventurelab
That scissor lift and the ram had lots of limitations, if your frame isn’t perfectly straight (not parked evenly) when you operate it, it can cause twisting and binding, (I have more than 50 home built dump trailers under my belt) long story short… a simple hinge on the left and right frame on the back hooking to the bed, than 1) 16” ram on each side to lift the bed would make the bed lift and lower evenly regardless the angle of the truck or parking position, cal-ranch has everything you need, aside from the pump itself, you should only be into parts $300 in grand total!
That hurt my back watching Trevor trip over the creeper while carrying the heavy bed.
That hurt everything, from my shoulders down. I'm oldish.
“You can’t make a sound in a vacuum!” And then there’s the staged creeper and bit set for kicking and stepping on! Trevor is hilarious! Tucker is an excellent editor!
Tucker won’t admit it but I (Georges) will, I think he’s an awesome editor!!
Kids, don't do this at home. Do it at a friend's house! 😁
You guys never cease to amaze me with your hilarious antics. That "protective" outfit that Trevor wore when "firing" the tennis ball really made me laugh out loud!
Look forward to seeing the mini offroad rollback finished!
It's awesome seeing both of you, honestly some of my favorite dudes from Matt's channel I don't miss on his channel because y'all are so much better doing your own thing.
2:15 - I'd throw something at em' from across the shop for that one. Freakin' amazing response, I actually laughed.
I think that vacuum on the single-acting cylinder resulted in the seal leaking. It's designed to hold fluid in, not keep air out. Once a little air gets in, the hydraulic pump can't function properly. But I know that you guys, along with Rudy and Zach, will work these issues out. "Misadventure Labs, overcoming physics one molecule at a time". 😊
I recommend y'all use a winch, cable and pulleys to move the bed back and forwards. Use a standard electric winch as a capstan and have springs provide tension on the cable. Mount a buffer battery and a 2nd winch on the tilting bed to pull vehicles up the ramp.
That is what I was going to write, as well. Simple and effective, shouldn't need more than 1500lbs of winch to work.
I see a Misadventure Labs video, i click 👍
Me too 👍
Why not just mount two hydraulic rods in parallel, one to push up and one to push down? That's assuming, of course, that you can't use gravity for the down direction, as many, many applications do.
And vacuum to operate it? Really? Do you understand why hydraulic fluid is used instead of air in the first place?
Gotta ask Tom Tom, as he has the mechanical engineering degree and he can tell ya what to do! I’m just a dumb ole electrical engineer and we don’t pump oil….
Tucker didn't even need the channel locks, he just didn't want to show you guys up that bad. 😂
Hey, you guys aren’t currently playing around with a weather balloon are you?
😆 the amount of times we’ve been asked that this week
Don’t run 2 motors! Lemme come help you, it’s easy
Like for the pure stupidity, and the fact that vacuum really sucks!
You were using one hydraulic line on one end and you need a line on each end with a control box to divert the fluid to either end.
2 minutes in and saying NOPE, this is not how things work. You might get enough to move the Pison, but under load stull is going to fail, Hyralic lines work under pressure not vacuum, aka they will collaps, for starters, other things come into play
Never tried it buy you should have just drilled connected on the OTHER SIDE, like a REALY hydralic piston.
Guess I should watch what happens now.
[edit] Oh, well that didn't take long
I’m thinking the seal design only works one way… single lip kinda thing
I am very happy to see you both, Trevor & Tucker. Hope Rudy does a good job.
You guys crack me up. I enjoy watching you guys. You need to make more videos.
A genuine real laugh when the ship fell off the wall after Trevor's expert installation. Discount mythbusters with the three ex morrscuteers is hilarious. More Rudi please, he does go well with Trevor and Tucker. BTW watch out for the garage creeper, Trev. Gday from Australia. :)
The rams on our loaders have a fitting at top and bottom top is to pump fluid in to retract and bottom to push fluid to extend
Man I’m early! Another fun video guys! Keep up the good work
The opposite of progress is congress, and we definitely don't want any more congress.
Nice to see you all working together again. Most entertaining crew to watch! 😂
Great antics guys, keen them coming :-) Jon UK
Progress! If you guys order enough parts it’s bound to work! It’s in good hands with Rudy.
3,2,1.. you sunk my battleship 😂 gold
Years ago i worked in a frozen chip factory.. endless ammo... Needless to say the old shop compressor and reservoir made a great spud gun on wheels..😁
Misadventures, can you boil water at room temperature with your vacuum pump?
Good idea, we should show that
maybe run two rams (opposite direction) with a directional control valve and one pump.
Trevor you forgot your groin Tupperware
That was a shit show taking the bed off.
Good stuff! Can we have a mini truck meet up when this is all done?
Yes we can
I’m just glad I don’t have to pick up all that glass!! 😱 You guys are hilarious! Oh dear! Trevor is going to need a back adjustment after that trip! 😳 Hope you weren’t “tweeked”! Can’t wait to see the finished little truck!
With a tight seal around the projectile, you needed to pull a vacuum on the tube in front of it. This decreases the air pressure that acts as a spring, stopping the ball before it leaves the barrel. The best results will be if you use the dump-tank to rupture the foil seal after the tube in front of the ball has been vacuumed. I can't wait to see further testing and dummy damage.
Keep up the good work. Love your channel.
I just can't understand, I love Rudy fixing, building, modifying,,, but building a mini rollback? Better make a bigger one Trevorrrrrrrr.
Rather than using a hydraulic ram have you considered using a ram with a wormscrew? And regarding your ping-pong ball cannon you need to find one of last few episodes of Mythbusters. They did what you are trying to do. They were able to severely damage a side of pork (analog for a human) with a ping-pong ball. IIRC their ping-pong ball reached several hundred MPH.
I think you need to change the name of the channel to MISHAP Adventure Lab. You almost killed Trevor. RUDDY!!!!
You guys need supervision and I volunteer to participate... I mean supervise... your next misadventure.
Muhuhuhuhuh
Carry on men. ❤❤❤
When things go wrong in the shop...I like to scream "TRevvvvvvvor!" or "RUUUUUUdddddyyyyyy" like in the OG MORR videos :)
Watching the first few minutes, I was thinking “I wonder what Supply Center has in stock right now?”
Lo and behold… Supply Center had some DC linear actuators a couple years back (12v or 24v or…?) from some sort of solar panel apparatus that had a working rating of 6000+ lbs. which probably would’ve also worked for your application.
I was going to make a lift table that could double as a forklift, but I missed out on them.
"Hey I'm Trevor, and I'm Tucker, Thanks for watching Dumber Every Day" 😁
Good to see you guys and see you having fun.
Just use two cylinders mounted in opposite directions.
I’d just like to say: I am waiting with bated breath for a hair update video. I just scheduled my appointment yesterday for Estenove. July 9th boys!!!!!
Suction depends on a vacuum. In a vacuum you can only get 1 atmosphere of “pressure” (I.e. vacuum). With a pressure device there is essentially no limit as to how much effort (pressure) you can generate. One atmosphere is about 14.7 psi, which is all you can get with vacuum actuation.
There are 2 way cylinders with 2 way valves. Thats what you need. I build hydraulic systems. Call your closest NAPA.
You guys had me LAUGHING in my recliner this am watching you and your ball experiment efforts!!
Love you guys!
Single versus double acting cylinders in hydraulics. Single acting cylinders need an additional force to compress, be it gravity or a return spring or something. Double-acting cylinders pump into the other end, pushing the rod back to it's starting position. The reason vacuum isn't involved could be attributed to diameter reduction from the vacuum (not likely), directional seals (unlikely), or the hydraulic fluid vaporizing (very likely). Pneumatics don't have this problem because there is no fluid to vaporize.
Chances are if you hooked up Rudy's original design, the weight of the tilt tray itself would have helped the thing work a bit better, but if you were trying to cantilever a load up off the ground you would have run into one of the issues above.
The seals only work one way. When you push fluid in on one side, the seal "pushes out" and effectively blocks the oil, pushing the cylinder. When you suck on it, it pulls the seal and allows air to come in the other way.
Double-acting cylinders have seals facing both directions (effectively). Some do it with O-rings as well (or additionally).
Think of a crank seal on an engine. What happens when you put it in backwards?
The fluid is made to handle pressure, not VERY HIGH vacuum. The fluid needs to push to work, never pull. Think of it like a rope in reverse, you can pull a rope and apply force all day long, but try to do the opposite and push the same rope. You're not going to get very far.
Vacuum dose not work like pressure. 30 inches of vacuum is all you are going to achieve. That is only about 15.7 psi at 6R degrees.
You guys aren't old enough to remember this; back in the early 70's, we used to take 5 or 6 beer cans, cut each end out, then duct taped them together, we drilled a hole in the last can that had an end to it, We inserted a tennis ball, squirted lighter fluid into the hole in the bottom end, then we lit a lighter to the bottom hole, and then BOOM!!! The tennis ball shot out. It would go about 100 yards in the air. Several years later, the potato launcher was invented - that was fun too.
BTW, we did live through all of this silliness.
You guys are too funny.
Trevor, watch out for that green creeper!
Duck Dynasty of the Desert!
Properly motivated a ping pong ball will go through a ping pong paddle. Just ask Myth Busters.
Tennis balls are a poor choice for a projectile. The fuzz both causes more friction and wrecks the seal, letting too much air go by the ball without pushing it. Singeing off the fuzz would help a lot. Any ball that has seams or grooves would have similar problems. Ideally you want a ball that is very smooth and perfectly spherical.
Cavitation maybe(depending on viscosity of that oil, im not sure you could cavitate it enough to matter), but how about check valve, or flow limiter valves? Any ram I've worked around wont let fluid flow back very fast as a safety feature, even if its "released" to return as designed.
I'm 4 minutes in.... and 7 days late but by now I'm "assuming" you have tapped the other end and push it back with pressure.
Maximum amount of vacuum pressure possible at sea level is about 30 inches of Hg (or psi). Since you are operating at roughly 4500 ft above sea level (Utah), it is going to be less, about 29 psi. Given this, it isn't going to operate a ram at all at that pressure even with no load on it. And yes, cavitation of the hydraulic pump is an issue. There is a reason that they have to use double acting rams in most hydraulic systems that don't have a constant load to retract the ram.
Take some PVC pipe and place a valve stem in the wall. Glue up a chamber with a ball valve at one end and a cap at the other. On the other ball valve side install your barrel. Fill the air chamber with 5 pounds of air, place your projectile in the barrel and open the valve. There are many ways of doing this. It looks like you may have the other end plugged, or your losing all of your pressure out the back instead of in the barrel. Yeah, compressor tank will work.
TREVOR what are you doing now? Rudy you are wasting your time trying to make TREVOR understand anything.
Look for the old Mythbusters episode about table tennis ball canons. They made one that was pretty powerful.
It won't work cuz the pump has no pressure on the intake side, the pressure is created in the pump. That ram will not work for you because its too long. You need a double acting ram. MAYBE if you were to put another port in it but thats iffy.
Why not use gravity to lower the deck? Lift the bed and release pressure. Then let the ram push it back up. 🤷♂️
Shadetreemetalworks is right: You can only suck about 15 PSI. Much too weak to do any good, plus your seals only work in one direction. So what you need, is one cylinder going in one direction, and another going the other way. Or get a bidirectional hydraulic cylinder, with inlets on both ends.
I love this channel
Don't waste your time with vacuum It will work but will make no appreciable force in one direction. The extend direction force is pressure x area = Force. a hard vacuum is inches of vacuum not PSI a huge difference. you could use a seperate cylinder for each direction but a bi directional is the best choice. Don't forget the force formula the rod diamiter area gets subtracted from the bore diamiter of the return area for a significant reduction in force. Pulling your deck down and pushing the deck up where the cylinder has more power is the best option.
Why didn't you just hook up a tiny winch, and line, to return the bed to level?
Wait for it, the solution is so cool
Just found this channel. I’m glad that I did. It’s like running into old friends. Now I got to back to the beginning and what every video. Great Video
Some things never change, Trevor still trips over😅
Not enough volume of vacuum (if that makes sense) for the inrush of air to fire the ball out of the vacuum gun. Compressed air from the bead seater is the way to go!
Go look at a bulldozer hydraulic system. Hoses go into both ends of the ram and the hydraulic pump pushes from either direction.
The reason it will not work is because the cylinder is a one way cylinder. It's not made for going 2 different directions. It's made for lyft and then gravity closes the cylinder. If it were a two way cylinder , it would have seals and the proper piston for it. And the hydraulic arm would have a port on the top of the side of the arm as well, note, get the right cylinder. 😊
The piston in a push/pull cylinder is different. They have double lip seals in opposing directions and a pressure line on both ends. The seals require pressure on the “inside” (pressure side) of the volume to seal. When you pull the “vacuum” you are actually pulling fluid past the seals and that gave you the goofy bounce trying to get it to close.
Even if you suck out all of the fluid and the seals don't let air in, the maximum pressure you can get is 14.7 psi at sea level. It isn't really suction at all, it's the air pressure in the world pushing.
I knew a kid working in a tire shop years ago, he would take a handful of lug nuts, duct-tape them in a ball, and shoot them across the shop with the beat-seating tank. Pretty dangerous.
You guys should consult with Tom Tom - mechanical engineer.. LOL
I've got a Pittie who would happily peel that tennis ball for ya! He's done it with every tennis ball I've ever given him, so he's kinda an expert 😂.
Just to add info to what @shadetreemetalworks said and what is in the comments section of his post ( which isa spot on ) you also have the issue of the impellers driving the fluid. Not all impellers and pump housings can pump fluid the opposite direction efficiently.
Now I know why I don’t watch your channel. If you don’t know how hydraulics work then you should not be allowed to play with it. Buy a log splitter and study how it works first before you hurt yourself or someone else.
Need one if those new 4cl LS motors in that rollback. 300 hp and maybe 35s😁
The reason the vacuum doesn't work is because you can push with as much psi as you want, but you can only suck 14.5 psi at the most since that's atmospheric pressure
It will work just like the hydraulic lift you have in your shop. 😊
Ohhh no, did a research on that ship and it’s very important! That picture was worth 50 000$ lol 😂
The old show "American Gladiators" use to shoot tennis ball's at 100mph
Excellent work guys. Your Nobel Prize is in the mail.
It's a displacement cylinder for lifting and the weight lowers it you need a double acting cylinder
3 way valve as your only Pumps not. Sucked so you pump open and then pump close that ram is gravity ram so the inner flange is not made to retractable as it retract on gravity
You need a double acting piston. Instead of screwing around, just get a used one from a bulldozer.
Air compresses to much thats why you cant use air. So I think you should put another valve on the bottom of the ram and pump in hd fluid one side and pump hd fluid out on the other side so the ram will go in and out .
Lol your making mini roll back the peck Brothers making a mini wrecker another youtube channel
Trevor's attempt at body-armour... 🤨😅
Damn I miss something I was wondering where you've been I guess I got some video to listen to catch up
i belive the hydraulic seals are directional and need the oil to work properly, so if you put the cylinder under vacum they will collapse and let air into the system, so it wont pull anything
We use to make potatoe cannons and use acetylene to fire it when I worked at a scap yard about 30 years ago. We were getting enough power to drive the firewall of a car back about a foot.
Well what makes that cylinder compress in it's original application? ?
I’m pretty sure that picture was worth about $140K. :-)))
Interesting how good people have left Matts off road, I quit watching a year ago.
So funny story, at my last job at the dealership we had this guy that would stay in the bathroom for a long time on the can, do we fill one of those bead blasters up and fired it off under the door. He said the water came up and hit him in the ass, from all the air pressure that went into the bathroom. It was the funniest thing that ever happened while I was there
Buy a double acting hydraulic cylinder in the size you need. They are inexpensive.