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Jost Lampfan rebuild follow-up.


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  #1  
Old 12-15-2016, 06:06:05 PM
Rodelu Rodelu is offline
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Default Jost Lampfan rebuild follow-up.

After much penetrating oil and increasingly heavier hammers I was able to take the engine apart. Cannot tell wether or not the piston and cylinder will work as they are, my intention is to make the missing parts and give it a try.
The rod that slides inside the cylinder needs to be replaced, a new one is easy to make.
I'm extremely grateful to Brent Rowell for his assistance.
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Old 12-15-2016, 09:11:43 PM
Bill Hazzard Bill Hazzard is offline
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Default Re: Jost Lampfan rebuild follow-up.

For your next post you should reply to this thread so all of your information stays in one place and not spread out over many posts.
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Old 12-16-2016, 05:54:41 PM
Rodelu Rodelu is offline
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Default Re: Jost Lampfan rebuild follow-up.

Thanks for the advise; I'll do that in the future.
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Old 12-17-2016, 01:42:46 PM
Brent Rowell Brent Rowell is offline
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Default Re: Jost Lampfan rebuild follow-up.

As we have discussed, I think the piston rings were probably added by a later restorer and are likely to create unnecessary friction. Here's a photo of my piston with only a single oil ring. The fit (seal) in the cylinder is so precise that it is very hard to pull out (but no friction). Today I've sent you about 40 photos of the linkages and parts that are missing.
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Old 12-18-2016, 03:04:56 PM
Rodelu Rodelu is offline
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Default Re: Jost Lampfan rebuild follow-up.

Hi Brent;
Got your beautiful photos and drawings, thanks so much!
I'll make parts according to your drawings out of some engineering plastic or laminate, just to see if they work and to make sure I have the right dimensions for the linkages.
I'm planing to try the cylinder and piston as they are, if they don't work I'll rework them for a better fit.
Those rings in the piston are still a mistery; I see a lot of oiling holes in your photos which in a warm climate and with the fan working 24/7 would require daily attention but they may or may not get it. Perhaps the rings helped by retaining some of that lubricating oil, apart from sealing the air in.
Best wishes.
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Old 12-24-2016, 12:44:59 AM
Lester Bowman Lester Bowman is offline
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Default Re: Jost Lampfan rebuild follow-up.

Better pay attention to Brent. ANY friction kills those little hot air fans.
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Old 01-20-2017, 06:58:39 AM
myersenginewks myersenginewks is offline
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Default Re: Jost Lampfan rebuild follow-up.

Very nice engine. Do you have a finished photo of the engine?
Thanks Brent Myers
Myers Engines .com
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