Subaru Robin Micro 4-Stroke Conversions
05-02-2007, 08:21 PM
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Subaru Robin Micro 4-Stroke Conversions
While doing a little research on an entirely different matter, I wandered onto the Subaru 24.5cc and 33.5cc micro 4-stroke engines. To make a long story short, I determined that these little engines are the basis of the rather pricey Fuji 4-stroke engines sold through Tower Hobbies.
Subaru link: http://www.robinamerica.com/engines/...so?Class=Micro
Tower Fuji links: http://www2.towerhobbies.com/cgi-bin...?&I=LXJDJ5&P=7
and: http://www2.towerhobbies.com/cgi-bin...?&I=LXJDJ6&P=7
These Subaru engines have been around for a while, but are not very widely distributed. The 33.5cc engine has a suggested retail price of $249.99. They do show up on fleaBay now and then, often built as a pump unit or on a Zooma go-ped type scooter.
Has anyone here tried doing a conversion of one of these Subaru engines? I think they would have potential (Fuji evidently thought so anyway). The larger engine is rather over square with a 39mm bore and 28mm stroke, which should help in the top end and relative weight. Though not able to run continuously inverted, the Subaru engine does not have the extra weight of the Honda mist type oiling system.
Search as I might, I can find no other conversion info other than the existance of the Fuji commercial conversions of these engines.
Has anyone out there tried to work with one of these Subaru engines?
05-03-2007, 11:56 AM
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RE: Subaru Robin Micro 4-Stroke Conversions
Silvaire,
Adam at BCMA engines has been converting them gor a while. He may be a good source for parts, if you get one. I think that the Honda GX35, at the same price would be a better choice. He is converting the GX35 now. http://www.bcmaengines.com/BCMA35.htm
Dave
Adam at BCMA engines has been converting them gor a while. He may be a good source for parts, if you get one. I think that the Honda GX35, at the same price would be a better choice. He is converting the GX35 now. http://www.bcmaengines.com/BCMA35.htm
Dave
05-15-2007, 07:13 PM
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RE: Subaru Robin Micro 4-Stroke Conversions
Dave,
Thanks for the info regarding the work Adam at BCMA has done with his 4-stroke conversions. I thought I had discovered something, but I guess it's no secret regarding the origin of the Fuji engines. I took a look at the BCMA engine site, but I see nothing there anymore regarding the Subaru engine. Since Adam has gone on to work with the Honda GX35, he must have seen more potential with that engine.
Arlen
Thanks for the info regarding the work Adam at BCMA has done with his 4-stroke conversions. I thought I had discovered something, but I guess it's no secret regarding the origin of the Fuji engines. I took a look at the BCMA engine site, but I see nothing there anymore regarding the Subaru engine. Since Adam has gone on to work with the Honda GX35, he must have seen more potential with that engine.
Arlen
