OS 35-S Piston and sleeve

LAST EDITED ON Jun-06-04 AT 06:48 PM (CDT)
 
Wanted to buy: New or not abused OS 35-S piston and sleeve. I purchased a used engine that turned out to be really used. Thanks for the help.

Ken Nash
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PS:There were a couple people who answered me that I didn't get to see their messages. The messages were listed on my E-mail and I thought that they would appear on the SSW. I deleted them on my E-mail, so I did not get to see them and am very sorry that I did not know the system. Please try again if you can. I will respond the next time. Sorry for the problem.

Ken

Ken, the problem with these engines is that when PL are worn out so is the main bearing. I have friends replace PL and later oil leaks out front and engine will go lean. They were good engines but not long lived. Hope you get lucky. Dan:7

Thanks Dan for your comments. I used to run the 35-S and was always happy with them, but you are right they didn't last more that one season. We didn't use as much oil in those days. That was part of the problem I guess.

Ken

> Ken, the problem with these engines is that when PL are
>worn out so is the main bearing. I have friends replace PL
>and later oil leaks out front and engine will go lean. They
>were good engines but not long lived. Hope you get lucky.
>Dan:7

The big problem is how they were run and on what kind of oil. It is possible to wear out the piston/cylinder and still have the rest good. On the other hand, with bad oil (as many RC versions were run) the rod will not last long, either. I would check that as well before going any further. If you use 25% (or more) castor, these can be good long lived engines.

Ken, I just today replaced the main bearing (bushing) and did both ends of the rod. It's a real time consuming job at least for me. Frank Bowman gave me some tips on doing this. I'm still running it in on the lathe. Good Luck.

G_Jake,

What material did you use for the bushings? How thick does the wall end up after boring? I'm considering trying to rebush some of my equipment. How did it work out?

Leonard,
Thanks for your help and advise. SSW does a great job and is a big help for us isolated modelers.
Ken

Dave, I was using aluminum bronze from MSC Industrial Supply Co. I was told not to use oil impregnated bronze. The wall thickness for the main bushing was .024 and the thickness of the rod bushing was .014
Aluminum bronze is extremely hard and long lasting compared to regular bronze bushings. It turned out good.

Good luck! grandpajake3