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Old 12-18-2023, 07:41 PM   #1
updraught
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Default On low compression engines

https://www.youtube.com/watch?v=y_4TBQiPLvA
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Old 12-19-2023, 09:15 AM   #2
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Default Re: On low compression engines

Nice video. Thanks.
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Old 12-19-2023, 10:11 AM   #3
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Default Re: On low compression engines

This kind of goes with my thought about Gen-Gas fuel used in the Model A. Low compression Model A engines seem very adaptable to a "wood fired" mode of transportation.

https://www.driveonwood.com/static/m...fema_plans.pdf

And we all know where our current "betters" would have us go - and its not internal combustion. But not to bring this thread "political."

Still, Gen-Gas was brought to a very high degree of refinement in the years before and during WWII. I believe it is Vince Falter at his Fordgarage.com site who covers somewhat the German G28 engine - which was extensively used in this fuel.

A discussion of various "heads" used on the Model A/G28 including those used on wood gas fuel is shown at https://www.fordgarage.com/pages/hea...ssionratio.htm

I note that generally the G28 "GenGas engines" head are GREATER than 7 to 1 compression - which to me is a surprise - but makes sense considering the probable power output one can achieve with a lower energy dense fuel such as GenGas.

Still learning...


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Last edited by Joe K; 12-19-2023 at 10:17 AM.
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Old 12-19-2023, 12:17 PM   #4
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Default Re: On low compression engines

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With the wood gas "GenGas" that Joe is talking about, there was a lot of fiddling with the air/gas ratio as the wood in the generator burned. There was also a lot of wear in the engines because of the lack of adequate filtering of the abrasive particles. So, with modern filtering, and a computer controlled "carburetor" this may be a practical solution to high fuel prices, or the lack of fuel in the future. I would think that a pickup truck would be a better vehicle choice because the generator could be mounted in the bed of the truck. I have no idea what the ideal compression ratio would be.

The flame that you see when you burn wood in your fireplace is the wood gas burning. It is a combination of hydrogen, carbon, and carbon monoxide, plus some volatile organic hydrocarbons.

I am really impressed by the Lance Bulldog tractor. One cylinder, two-cycle, huge displacement, rpm you can count, and burning any kind of oil. A good source of used crankcase oil is the marinas and boatyards where people change the oil in their boats.
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A is for apple, green as the sky.
Step on the gas, for tomorrow I die.
Forget the brakes, they really don't work.
The clutch always sticks, and starts with a jerk.
My car grows red hair, and flies through the air.
Driving's a blast, a blast from the past.

Last edited by nkaminar; 12-19-2023 at 12:28 PM.
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