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Engine basics => Engine set up tips => Topic started by: Allan Perret on October 31, 2014, 04:49:33 PM

Title: OS-40 MAX-H
Post by: Allan Perret on October 31, 2014, 04:49:33 PM

Flying buddy has one, tried to get it running for him.  No compression.  Took it apart thinking ring might be stuck, but it wasn't.  Probably needs P&L and ring. Its old, history unknown, but lower end seems to be in good shape.  Are parts still available ?   Anyone still rebuilding these ?

Title: Re: OS-40 MAX-H
Post by: M Spencer on October 31, 2014, 08:04:25 PM

Theres TWO of them there H40 maxes , according to some tripe .

The ' R/C ' stamed ones pre 73 and same bore & stroke as the 40 S & 40 P .
The post 72 thing with the ' 40 ' on the bypass pad ( only ) is the later grunter with different Bore & Stoke .

see your P.M. 's .

Title: Re: OS-40 MAX-H
Post by: RandySmith on October 31, 2014, 11:08:51 PM

I have many parts for them, and a couple of new ones, plus maybe a few used ones, I will have to see what is here and I can let you know what I have

Randy