Big Rig on-board air??
#1
Big Rig on-board air??
Im thinking about retro fitting an air compressor off of a 2 and 1/2 ton truck that I can acquire for about 40 bucks. But Im really worried about parasitic loss. Would it be worth it on a 22re???
#2
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If the compressor drive cannot be disconnected via a clutch or similar device, similar to the air conditioner, there will be some parasitic loss since the compressor piston(s) will continue moving even if it's not compressing.
How much loss is a good question though, and would depend on the unit itself but I can't imagine it needing more than 1-2 hp when unloaded or more than 4-5 loaded.
One other thing to consider is what vehicle it's coming off of. If it's a diesel-engined truck, the compressor is likely not going to appreciate its shaft revving over 3000 rpms.
How much loss is a good question though, and would depend on the unit itself but I can't imagine it needing more than 1-2 hp when unloaded or more than 4-5 loaded.
One other thing to consider is what vehicle it's coming off of. If it's a diesel-engined truck, the compressor is likely not going to appreciate its shaft revving over 3000 rpms.
Last edited by abecedarian; 09-03-2012 at 11:30 AM.
#5
Well I dont have any factory A/C. The pump is coming off of a '52 studebaker, with a gas inline 6.
But I just thought about unplugging a fuel injector and taking out a sparkplug and running a hose off of the dead cylinder. This is assuming the injector closes when no current gets to it.
But I just thought about unplugging a fuel injector and taking out a sparkplug and running a hose off of the dead cylinder. This is assuming the injector closes when no current gets to it.
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https://www.yotatech.com/forums/f116...r-22re-152143/
York air compressor, its got its own oiling system so it not an issue.
pretty good info on there and def tried and true on many rigs of all makes.
York air compressor, its got its own oiling system so it not an issue.
pretty good info on there and def tried and true on many rigs of all makes.
Last edited by mudpunisher; 09-03-2012 at 03:14 PM.
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#9
Im trying to run air, so that I can air up my tires after a day on a trail. I can get an old belt driven compressor off of a truck, or I could kill a cylinder and use the engine. Im trying to do this as cheaply as possible.
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Don't try running off combustion chamber pressure, you'll introduce fuel and oil laden air into your tires, and tire rubber doesn't enjoy that, nevermind the added wear and tear on your starter.
As far as the engine driven compressor, how big is this thing? Is the pulley equipped with a clutch? Otherwise you'll need to come up with a bunch more plumbing to run this cleanly.
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there are LOTS of small air compressors available at most hardware stores. It might take a while to fill your tires back up, but chances are you can spend that time rolling up your tow straps and finding your shovel in your friends truck ect. no sense spending hours hooking up this compressor system, then having problems with it on the trail, then fixing it, then breaking a belt, then taking the time to pull it out again when you can just spend the money now and be done with it. Something I've told myself since I got my truck, do it once, do it right and you won't regret it!
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Thanks for the info and tips. end thread...
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Most wheelers who want a cheap but good compressor get a toyota ac compressor form a wrecking yard for next to nothing, got mine for $30. If you get one from a yota with the same engine they bolt right up. Why would anybody want to run a super old compressor with no clutch? Get a yota ac pump and a toggle switch for the clutch. No worries about parasitic loads and what not.
Last edited by ThatGuy1295; 09-03-2012 at 06:15 PM.
#16
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Ive filled my 36'' tires 30+ times now, from 8psi to 30psi, only problem ive ever had is a hose blew off because of no hose clamp.
Yes I have an oiler, harbor freight $12.
And my favorite rock I carry for the throttle, run it at 2,000rpms and it fills in minutes. Not hours
X2 thats a retarded idea, and unnecessary.
And electric compressors takes 7 years to fill one tire. Just FYI
Yes I have an oiler, harbor freight $12.
And my favorite rock I carry for the throttle, run it at 2,000rpms and it fills in minutes. Not hours
Don't try running off combustion chamber pressure, you'll introduce fuel and oil laden air into your tires, and tire rubber doesn't enjoy that, nevermind the added wear and tear on your starter.
And electric compressors takes 7 years to fill one tire. Just FYI
Last edited by ThatGuy1295; 09-03-2012 at 06:20 PM.
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Ive filled my 36'' tires 30+ times now, from 8psi to 30psi, only problem ive ever had is a hose blew off because of no hose clamp.
Yes I have an oiler, harbor freight $12.
And my favorite rock I carry for the throttle, run it at 2,000rpms and it fills in minutes. Not hours
X2 thats a retarded idea, and unnecessary.
And electric compressors takes 7 years to fill one tire. Just FYI
Yes I have an oiler, harbor freight $12.
And my favorite rock I carry for the throttle, run it at 2,000rpms and it fills in minutes. Not hours
X2 thats a retarded idea, and unnecessary.
And electric compressors takes 7 years to fill one tire. Just FYI
#19
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I'm currently working on a york on-board air system.
Using the stock A/C bracket for the 22re, a custom bracket, yada yada.
If I want to run a tank and make it all safe, it will cost me just as much as a 15lb C02 system.
Yes, the on-board doesn't cost anything to run/fill the tires, but a C02 has more muscle and cost just as much if not less.
Using the stock A/C bracket for the 22re, a custom bracket, yada yada.
If I want to run a tank and make it all safe, it will cost me just as much as a 15lb C02 system.
Yes, the on-board doesn't cost anything to run/fill the tires, but a C02 has more muscle and cost just as much if not less.
#20
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I'm currently working on a york on-board air system.
Using the stock A/C bracket for the 22re, a custom bracket, yada yada.
If I want to run a tank and make it all safe, it will cost me just as much as a 15lb C02 system.
Yes, the on-board doesn't cost anything to run/fill the tires, but a C02 has more muscle and cost just as much if not less.
Using the stock A/C bracket for the 22re, a custom bracket, yada yada.
If I want to run a tank and make it all safe, it will cost me just as much as a 15lb C02 system.
Yes, the on-board doesn't cost anything to run/fill the tires, but a C02 has more muscle and cost just as much if not less.
You can have onboard air for under $100, anybody who thinks this is a big expensive deal doesnt know what time it is yo think i said that right.
Lot of people doent even run a tank, like me for instance. Only beny to a tank is air tools, and the first tire will fill faster, but after that your actually working the compressor harder cause its got to fill a tank and tires, not just tires.