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Hot Air Engines Stirling engines, Rider-Ericsson and others.

Hot Air Engines

Cylinder Lubrication


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  #1  
Old 09-11-2019, 06:58:27 AM
Mark K Mark K is offline
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Default Cylinder Lubrication

What is a good lubrication to use on the cylinder of a hot air engine? The previous owner used motor oil. Is there something that is better for the leather seal? Thanks
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Old 09-11-2019, 08:24:29 AM
Brent Rowell Brent Rowell is offline
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Default Re: cylinder lubrication

Everyone has their favorite, but motor oil should not be used as it's too heavy and will burn if it gets to the bottom of the cylinder. Assuming the leather is already saturated, only a small amount of lubricant is needed on the cylinder walls. I've used Marvel Mystery Oil (won't burn if it gets in the bottom of the cylinder) or even spray silicone. A friend who used to make leathers saturated them with a mixture of turbine oil and white lithium grease which was enough to lubricate the cylinder. Would be interesting to hear from others.
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Old 09-11-2019, 01:33:32 PM
Andrew Mackey Andrew Mackey is offline
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Default Re: cylinder lubrication

On our 5" Rider Erricson, we just applied saddle soap to the leather. As noted, motor oil will burn.
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Old 09-23-2019, 05:34:39 AM
colo colo is offline
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Default Re: Cylinder Lubrication

I made my seal a few years ago,
and had been immersed in neatsfoot for a week.
Then I used Teflon grease for a while, but after working for about 8 hours, the gasket remained glued to the piston.

I cleaned the gasket and today I use lithium grease, just a light layer at the beginning of work.
So I didn't have any problems.
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