Outer Limits 4x4 Board

Hi guys i was going to hook up a york compressor as a on board air system but am struggling to find a place to hook it with the belt system so i was looking around on the net and found this system

http://www.oasismfg.com/p2.html

It looks like a good idea but i was wondering how much a 2.5hp motor would be to connect to the compressor?

Do you guys think it would be a good option to hook a 12v motor to the compressor to fill a tank? im guessing it would need to run around 1000rpm hey?

Hopefully hear some comments, thanks.

might aswell get a arb compressor or a 12v air compressor of some sort

but i already have a york compressor here and they are easy to come by so if it ever fails just replace it with a new one and if the motor is cheap then it will be worthwhile.

Also if i buy a 12v compressor and it stuffs up then its 300 for a new one.

I'd spend a bit longer looking for somewhere to mount it to the engine and borrow a belt.

Are you sure you can't move something eg pas pump, air con pump, alternator, and put it above or below that? Or use it to replace an idler/tensioning pulley on something?

It's easy for the engine to turn the sucker, but a bit of an ask for an electric motor.

If you are going to run it from a leccy motor, I can't help thinking a belt drive setup might be best to get some gearing happening.

pto drive?

Mate of mine who is a auto spark has told me to hook up a XF starter motor to this compressor or a sanden 508 all you need is to make an adpator to go between both shafts will run all day.

.... or a replacement winch motor would have sufficient torquel.

CBC bearings (and probably others) have the flexible couplers to go between the two units. Tapered shafts are a bit hard to join to - the york is a taper type.

Oasis (US) sells them pre built http://www.oasismfg.com/p3.html

Very expensive tho ...

What sort of truck are you trying to shoe-horn this into?

I was looking at a winch replacement motor an saw that these would be sufficient, how much roughly is a winch replacement motor?

Also i notice when you try to crank over an engine for a while the cables get very hot, wouldnt the same happen if you crank the compressor over for a while? or is it only because you have a fair bit of torque to turn over an engine.

I quite like the starter motor idea because they arent that expensive and would be good for a trial. I want to try this as its something different rather than hook it up a belt because it may also have the advantage of being portable, thanks.

Its going to be heavy as buggery to carry.
Count on pulling massive amps aswell.
Good luck though - would love to see pics if you can mate the starter and compressor on a block and make it portable.

I did not think a starter would be able to spin the compressor fast enough to get the cfm's up.

i have tried connecting a starter motor and air cond pump. it does work but the starter motor pulls that many amps that the jumper leads i was using were getting very hot and the ute battery was struggling to keep up.
i would not recommend tying it, as it is not a practical set up!
i turned up a new pulley for the starter motor and used a small v belt to connect the two. did have some pics someware, but cant find them now!!
cookie monster

what size pulleys did you use on the starter and compressor?

Have you considered a two belt "relay" setup? If it is angles and clearances that is the main problem then this may fix it for you. It could also allow you to use some bellhousing bolts to mount a bracket with the compressor on it further back in the engine bay.

Using a high powered electric motor is going to cause more problems than it cures (charging/alternator output/wire guage/cumulative mechanical and ellectrical losses and inefficiencies, etc)

I still reckon you could use a 12v motor, if the website i put up can do it why cant i?

Also what does this twin relay belt setup look like?

superg wrote:I still reckon you could use a 12v motor, if the website i put up can do it why cant i?

Also what does this twin relay belt setup look like?

Simply a loop from crankshaft to an idler shaft then another loop from idler shaft to compressor.

(Look at a super charged Commodore V6 to get an idea, can put the idler shaft wherever you need though)

No reason you can't do it, it's all a matter of time and $$.

In this case the big drawback is the load you will put on your electrical system, you are looking at something like a 2kW motor (minimum) to drive a York compressor with, so around 150 amps - give or take.

You will be looking at $3-400 for a winch motor, machining up of adapter plates etc (maybe $100?), shaft couplers ($150 new), cables (heavy duty 1GA? - $20/m?), 200Amp relays, mounting hardware etc ... the same things you would need to do to wire up a winch. The current draw is similar.

150 amps is a lot of juice to pull from a battery - you may get about 20 minutes of runtime out of the unit on a standard N70ZZ battery ... but certainly wouldn't have anything left to start the vehicle with.

I looked into the same setup when I was doing my compressor setup - but it was easier and cheaper just to fabricate some brackets up to make the compressor fit under the bonnet.

What sort of vehicle do you have? One of us may be able to suggest something ...

::watches thread intently::

I have a York that I would like to fit into my 75 series (2H) engine bay.

I can't see how I can mount and drive it without it laying on its side......

2H's are particularly difficult as about the only place to mount them is on the passenger side of the engine above the alternator.

I take it you still have A/C installed?

Nope, no aircon installed.

I never had it and don't even know where it would go.

Still pretty tight on top of the alternator though......

yeah above the alternator is the best place. We also mounted another alternator above that!. AC unit is fixed to a plate that bolts to the block, there are a copule of spare threaded holes nearby. The second alt is mounted to a special bracket that uses the themostat housing bolts at the top, and is welded to the AC unit plate. Bit complex but it works.

Nah ... plenty of room!

Don't know about the York in particular though ... I had a modified Unicla twin piston installed on my old 2H for a while - worked very well - very fast air up times.



This photo was taken just before I took it off, so ignore the loose belt and disconnected hoses But gives you an idea of where it's mounted. This one was in a HJ45

ive got a fj40 with a 2f, im sure i could male up a bracket, does anyone have any pics if they have mounted one on a fj40 with a 2f? thanks

You should have heaps of room on the RHS of the engine - that's usually where the P/S and A/C are located - if you don't have one or both, you should be laughing!

There are some "spare" bolt holes up the top on the head and block that should be suitable to mount the compressor.

You may be able to get away with a spacer arrangement - similar to what this fellow has done:

http://www.steelnthings.com/TLCA/2Fswap/

Also Tom Quinn @ http://www.tomquinn.com/lc/2f_fi/index.html has some pictures of a 2F with a York installed in this location. Not close up, but it gives you an idea.

took some pics of the test setup i had





hope this helps
cookie monster
ps. looks like i reduced the quality too much !!

those tom quinn pics look good thats where i was going to put it in the first place, would be good if someone had some measurements of their bracket to install it there because the compressor is bloody heavy to try hold it there to get some measurements.