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Old 06-29-2008, 09:23 PM   #1
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Default Converting a gas engine to steam

Well, I screwed up I broke a valve tappet on my 2 hp briggs. I'm not sure If I want to replace it but in the mean time I have this

















Its a 5 Hp Briggs & Straton gas engine, it came off an old generator that quit working. The problem was with the engine, the intake valve was stuck, I fixed that though.

The the cam is already timed for 1 intake and 1 exhaust. A little fine tuning will help though, but now I have to add 2 additional lobes exactly opposite of the other 2 lobes. I would like someone to machine them, but will probably end up welding them.

Ok, the 2 lobes needed: Would anyone like to machine them for me? I will pay you of course, but I just need 2 little lobes machined so I can weld them to the cam.

Hope everyone takes an interest in this, its an easy way to build a steam engine.

Cedge, did you recieve my PM?



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Old 06-29-2008, 10:58 PM   #2
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Default Re: Converting a gas engine to steam

Ranger
I'm afraid cutting cam lobes is something I've got no experience with, at all. I'd be quite happy to do it, if I knew more about the process, but I'm lost on this one little dude.

Steve



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Old 06-30-2008, 01:46 AM   #3
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Default Re: Converting a gas engine to steam

Ok, Thanks.

I hope another fourm member in the lower 48 will take the challenge. I might just have to take my last resort to welding.

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Old 06-30-2008, 01:56 AM   #4
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Default Re: Converting a gas engine to steam

Ranger,
You could build up the lobe with the welder then profile it with a file. Good learning experience.
Mostly you'll learn you don't want to file anything anymore.

Seriously though, filing it won't be that bad if you use a soft grade of metal to build up the lobe. And it'll make you a better welder. You don't want to add any more metal than you're willing to file off.


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Old 07-01-2008, 12:13 PM   #5
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Default Re: Converting a gas engine to steam

Looks like I'm going to weld the lobes on myself. I need to practice welding first, I have some round bar that I can make lobes on.

Hopefully I will get the intake lobe done today. Pictures will follow at the end of the day.

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Old 07-05-2008, 05:51 PM   #6
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Default Re: Converting a gas engine to steam

I welded the lobes on Thrusday. I used a little lincoln MIG welder, after careful grinding and trial and error, it works.

I can get about 500 RPM on about 40-50psi of air, after that the air pushes open the valve and it doesnt work as well. This 5hp engine probably devlops about 1hp on air, or I hope it does.

Video uploading.

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Old 07-05-2008, 06:15 PM   #7
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Default Re: Converting a gas engine to steam

Just take my advice, listen to the voice in the video. Whenever I say, I'm going to start it up......well turn down the volume then. When engine stops listen to voice then turn down volume

This engine is LOUD
http://www.youtube.com/v/JxaVER4U6d4&hl=en&fs=1

I'm running this engine on about 40-50 psi of air. I get about 500 RPM. After you cross about 50 psi the valve opens on the intake and the engine doesnt run as good.

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Old 07-05-2008, 06:26 PM   #8
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Default Re: Converting a gas engine to steam

Nice project Ranger, I've been following with interest, you have a lot of focus!!!

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Old 07-05-2008, 06:51 PM   #9
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Default Re: Converting a gas engine to steam

Well done Ranger!

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Old 07-05-2008, 06:53 PM   #10
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Default Re: Converting a gas engine to steam

Looks like you are having fun) I built an air compressor out of a 5 hp Briggs. It worked great for a few years.

Wes



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