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Engine I.D.

Old 08-31-2004, 04:49 PM
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still burnin
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Default Engine I.D.

I was wondering if anyone could help me with a engine I.d.. I have not had a chance to track down a camera yet but thought maybe with a good definition it could be named. This is what I know. The plane was given to me and the person said they bought it at a show about 20 years ago but know nothing else. It has a K.B. stamped on the side of the motor under the exhaust side of it, so I know the brand. I can not find the engine size, there are no other marks on it. I do have a TH .40 and this engine is bigger than the .40. It has the same mounting specs. as some other .60/.61 sized engines. It is on a plane with a 54in. wing span. the engine runs but I think the crank is bent because the is a vibration in it a full throttle. I would like to know the size to see if there are any parts for it or what size engine I need if I have to replace it. Thanks Matt
Old 08-31-2004, 06:47 PM
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Doug D.
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Default RE: Engine I.D.

A photo would help the most. Maybe you could find someone to take the photo for you !!!
Old 08-31-2004, 08:14 PM
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MikeSell
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Default RE: Engine I.D.

If no size is cast in the case it is a sportster series. The .20/.28 appears the size of a normal .40. The .45 appears almost the size of a .60. The .65 appears the size of a .90-1.
They are a bushed engine. They do not like more than 10% nitro. If it is a .45, it should turn a 10x6 at about 13,000 or an 11x6 at about 11,600. The vibration you feel may be an unbalanced prop. Parts for this engine are still available at
WWW>MECOA.com
Old 09-01-2004, 05:20 AM
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still burnin
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Default RE: Engine I.D.

Thanks for the info. It gives me a direction to go in.

Thanks Again
Matt
Old 09-01-2004, 07:49 AM
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Default RE: Engine I.D.

Could the vibration be due to detonation?

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