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4 stroke gasser conversion for 1/3 scale cub?

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4 stroke gasser conversion for 1/3 scale cub?

Old 08-25-2020, 03:40 AM
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subarubrat
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Default 4 stroke gasser conversion for 1/3 scale cub?

Years ago, I did a number of conversions of Honda GX 4 stroke engines (still running today) and although they are heavy and under powered by most standards they work REALLY well with planes like the WWI 1/4 scales and the Sig Rascal 110. I am not up on what is available today, and I am sure the era of gas yard tools is ending, so what if anything is out there now able to spin a 20-22 inch prop at 8-10k RPM, enough to fly the balsa USA 1/3 Cub.
Old 08-25-2020, 07:50 AM
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daveopam
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I'm zero help to you with conversions. But you can buy some nice twin gassers for not a ton of cash. Valley View RC has a 50cc twin for $420 and a 60cc twin for $439.
These are nice units and they are great people to deal with.

David
Old 08-25-2020, 09:33 AM
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subarubrat
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Those are 2 strokes, it isn't about the money so much as it is the 4 stroke sound and suitability. That said, when there were no 30-40cc 4 stroke model airplane specific gassers the Hondas and Stihls were available, then Fuji sold a less capable 4 stroke engine for 3~4x the price of the Hondas so why pay more for less? But the goal is a 4 stroke gasser.
Old 08-25-2020, 11:48 AM
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I understand. I hope your search is fruitful.

David
Old 08-25-2020, 03:02 PM
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kamlooper
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Look into a Stihl 4 mix. Its a 4 stroke that uses pre mix fuel but is a 4 stroke. Im converting a 27cc and will be running a 17" or so, but this guy runs the 32cc with a 20" in a 1/4 bipe . Look at his other videos,he's converted a 64cc as well as an 80. They are quality engines and last forever.
Maybe the 32 will do it for ya?

Old 08-26-2020, 04:02 AM
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Tidnab
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Originally Posted by subarubrat View Post
Those are 2 strokes, it isn't about the money so much as it is the 4 stroke sound and suitability. That said, when there were no 30-40cc 4 stroke model airplane specific gassers the Hondas and Stihls were available, then Fuji sold a less capable 4 stroke engine for 3~4x the price of the Hondas so why pay more for less? But the goal is a 4 stroke gasser.
Staton has four strokes 16. All Engines Two and Four Cycle All Sizes

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