Re: LPG Tractors

Posted by JT on January 11, 2003 at 13:57:41 from (206.72.35.17):

In Reply to: LPG Tractors posted by Gary (Ont) on January 11, 2003 at 07:48:12:

I can't resist weighing in on this one. My collection leans heavily to LP.

LP was an extra cost option on some tractors. As stated earlier this could be outweighed in oil country because the cost of the fuel was near nothing. I am in iowa and here the LP fuel dealers would subsidise the cost of the equipment if you locked in to buy all your fuel from that particular dealer even the extra cost of the tractor.

There are a number of diferent ways to fill the tractor tank but you need a way to get liquid out of your nurse tank. One way is to just run a hose from the liquid port to the liquid fill on the tractor tank and vent the vapor off the tractor tank. Caution needs to be used doing this the vapor being vented is VERY flamable and will seek a low point. The other ways are to use a electric or hand pump. I think the hand pumps are about $500 with all the hoses.

LP tractors usually had about the same or slightly more horse than the gas version. They only differ in the manifold, carburation, and either the head or pistons.

LP has considerbly higher octane than gas which allowed and nessecitated higher compression ratios and earlier timing.

You would probably notice similiar performance in your pickups if you went strictly to LP and advanced the timing and put on higher compression heads. Not a real attractive option.

The manifolds were different than gas because no heat was needed to vaporize the fuel. By separating the exhaust completly from the intake no heat was transfered and the engine drew in cooler air which is more dense which makes for more potential horse power.

LP doesn't contain as many BTU's per gallon as gas so the MPG or gallons per hour don't look as good.

Some companies jumped in with both feet on LP and others just put in their toe tips. Cockshutt only made their own for three years. While MM got in early (39 I think) and stayed until the bitter end and beyond.

Hope I haven't bored you to tears with this.

JT

Follow Ups:

• Re: Re: LPG Tractors JH to JT 21:33:25 01/11/03 (1)
  • Re: Re: Re: LPG Tractors Bret 05:34:21 01/15/03 (0)

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