Gav's 101.

**101 Ron** · 8th January 2014, 06:54 PM

Originally Posted by bacicat

What's the risk of running the engine past 2000RPM with a setup like this?

My air con piston type compressor has been going for years and I usually charge the air tank everytime I use the vehicle.
I also have a small dip stick in the side of the compressor and top up the oil every engine oil change.
My compressor uses the original 101s 24volt altenator drive belt and pulley set up...........I don't know the gear ratio compared to the engine, most likely slightly higher/faster.
I find at 2000rpm engine is more than enough air for anything you may need, but heat will build up quickly as the compressor has no cooling fins etc.
If pumping tyres .......usually for more than one vehicle, a fast idle speed is enough to maintain pressure in the tank and heat built up is reduced and therefore I will have along lasting compressor and little risk of melting the air supply hose to the tank.
My Nippon Denso piston compressor is much smaller than a York
The limit to pumping tyres at a fast idle is the restriction of the tyre valve.
I can spin the whole thing at 4000rpm engine speed, but there is no need to.
I can spray paint at 2000rpm engine speed and run a rattle gun for a short time.
The 101s air system has been used from time to time for on site stripping of old vehicles for spares or replacing the garage compressor at home if a friend has borrowed it.
Its biggest job has been charging the air brake system of a truck which lost its air.................it took a while at 1500rpm , but did it in about 10 mins.
Expect good things from your set up Gav.
You will find any electric compressor will not cut the mustard to a engine driven York on the tracks pumping tyres and of cause working air horns.

**101RRS** · 8th January 2014, 06:59 PM

Ron - did you tell Gav that your horn sound like a strangled cat when it gets water in it - so needs to be pointed down a bit.

**101 Ron** · 9th January 2014, 08:00 AM

Originally Posted by garrycol

Ron - did you tell Gav that your horn sound like a strangled cat when it gets water in it - so needs to be pointed down a bit.

Garry as you well know it was apart of my design plan so I need to clear my horns throat from time to time

**Homestar** · 9th January 2014, 03:34 PM

Well, two steps forward, one step back... Went to mount the compressor today, and despite me measuring things up, it won't fit in there on the factory bracket on the angle it sits in there...

So, I now have to work out how to build the new bracket that is required. It will be a bit tricky as I need it adjustable like the old one to take up the belt tension, but one of the bolts I need it to swing on will need to be countersunk to clear the compressor housing... Hmmm, not sure what to do now...

I think I'll go on with something else until I have a eureka moment...

**Sitec** · 9th January 2014, 05:41 PM

Originally Posted by bacicat

Well, two steps forward, one step back... Went to mount the compressor today, and despite me measuring things up, it won't fit in there on the factory bracket on the angle it sits in there...

So, I now have to work out how to build the new bracket that is required. It will be a bit tricky as I need it adjustable like the old one to take up the belt tension, but one of the bolts I need it to swing on will need to be countersunk to clear the compressor housing... Hmmm, not sure what to do now...

I think I'll go on with something else until I have a eureka moment...

Pictures needed here.. We might all have some Eureka moments... Is the rad out to aid working or still in?

**Homestar** · 9th January 2014, 05:57 PM

Rad still in - plenty of room to work, just not enough for the enormous factory bracket. There is physically plenty of room for the compressor should I be able to make a bracket. I'm fairly agricultural with my fabrication, so having to get things spot on is not my strong suit. I usually just cut and weld stuff up - take the tank bracket for example - I didn't use a ruler or tape measure at all building that.

The bracket will need to consist of two plates at right angles - I'll see if I can take some pics that make sense.

**The ho har's** · 9th January 2014, 06:01 PM

All this talk about air horns and wistles

Fire siren

Mrs hh

**Homestar** · 9th January 2014, 06:12 PM

Ok, some pics. First up is a front on shot of the bracket, with the compressor next to it - you can clearly see the 3 mounting points - one fixed, and two pivoting on that axis.

Second shot shows roughly where the compressor needs to go in relation to the bracket. You can see here the upper LH pivot slot is now covered. The plate that bolts to the block can only be about 6mm thick behind the compressor or the pulleys won't line up. The photo is at a bit of an angle but the bottom fixed mounting bolt is visible and usable as is. Basically, I need to move it about 50mm closer to the engine and down about 25mm.

Last shot shows the hole it's got to go in...

If it mounts where I want it too, then there will be clearance to change the oil filter and the engine cover won't need modifying. I can hold it in the spot I want it, but I can't take a photo at the same time. I'll try blocking it up into position tomorrow and take a couple more pics.

Any thoughts?

**Homestar** · 9th January 2014, 06:17 PM

Just had a thought. I may be able to mount the bracket hard up to the block - with no adjustment and use a separate tensioner below it. If I did this, I could counter sink that one screw, then bolt the compressor to the bracket - there will be room to do this but I would need very small hands.

Any other thoughts appreciated.

**grey_ghost** · 9th January 2014, 06:19 PM

Thoughts - mate you need to get out in the sun and get a sun tan!!! Those legs are pale!!!

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