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Hit & Miss Gas Engine Discussion

Small "Hot tube" eninge who made and how small?

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Old 04-06-2007, 02:42:26 PM
Dave Beck Dave Beck is offline
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Default Small "Hot tube" eninge who made and how small?

I have been thinking about trying to find a small hot tube engine. This ignition system has always fasinated me. My questions are, what is the smallest size commercially built, who built them, and do they run good?

I have a good freind that has a 4 horse myrick Eclipse and he runs at a couple of shows I go to. It really runs nice if the wind isn't blowing hard. What price should a nice engine with the hot tube ignition bring?

Thanks for any and all help.

Dave Beck
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Old 04-06-2007, 03:22:41 PM
deverett deverett is offline
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Default Re: Small "Hot tube" eninge who made and how small?

The Gardner O type or Robinson X type both have hot tube ignition. They are British engines and are quite small.

The Gardner has a flywheel diameter of about 19" and bore x stroke of about 2-3/4 x 4".

The Robinson, which dates from 1890 onwards has a flywheel size of 17-1/2" and bore x stroke of about 3 x 3".

The Gardner Type 1 was the next size up and the Robinson V Type was a slightly later model.

The picture will give you an idea of what they look like.

Whether you will find any in the US is another matter.


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Old 04-06-2007, 04:05:45 PM
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Doug Waggonner Doug Waggonner is offline
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Thumbs up Re: Small "Hot tube" eninge who made and how small?

Hi Dave
To be an affordable small hot tube engine it's gonna have to be an oilfield engine. Paul Gray has a really neat Bovaird 2.5HP hot tube engine, and its an oilfield engine, heres the link

You know you can make ANY engine a hot tube engine. Even a Maytag or a Briggs...i've seen it done! Perhaps you could "retro-fit" a more common type of Hit N Miss spark plug fired engine There are a few Stakers that sell hot tubes, and the like, and you can make the chimney out of a 12" long 3" diamter pipe. There's just not much to Hot tube ignition, "If U's can lite a Far U's got ignition!"
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