Debra
04-27-2007, 04:46 PM
Mr. Clarence Lee:
I have an old OS 35H R/C engine that was given to me in 1977 and I flew it for 3 years until circumstances kept me from flying until now. Boy have things changed!
Anyhow, I succeeded in getting it freed up from it's stiff condition but I rounded out 7 of the 10 screws trying to open it up to clean it up. Now I'm afraid to try to tighten them down because they just might not get tight enough. I was in contact with Tower Hobbies and was told my engine was made in 1966 and parts are no longer available.
Tower referred me to 'bbhwc@mitec.net' saying that person deals in older engines but I've not received any response. I would hate to junk what I think is an engine that still has some life in it, but I'm not sure if I'm at a dead end here.
If you have any thoughts as to any possibility I might have in this regard it would be greatly appreciated. I didn't buy it so in that sense it wouldn't be a loss, but it is sort of sentimental in that it was part of my entering into the fun of R/C flying.
I have attached photos of this engine in case it helps identifying it.
Thanks for any help you can give me.
B.K.
Dear Mr. K,
Although your O.S. 35 is 30 years old, screw types and sizes have not changed. Your engine has what are called Fillister, Phillips head screws which are pretty standard. However, they are probably metric thread which are a little harder to find in hardware stores, etc. Great Planes probably could not help you due to screw sets for this engine not being listed in their computer.
You should try Hobby Services that repair the O.S. engines and would have loose screws. I should imagine that screws from a modern day O.S. 40 etc., would fit. phone: 217-398-0007. Fax 217-398-7721. If they don't have Fillister, Phillips, socket head cap screws that are more common now could
be substituted. You could also try Micro Fasteners that advertise in most
of the model magazines. Phone 1-800-892-6917 fax 1-908-236-8721. I do not have any metric screws, but If you want to send me a head and backcover screw in a padded envelope along with return postage, I can tell you the sizes you need so you could check some of the screw suppliers in your area. For my business address, see my ad in MAN's clasified section.
Clarence Lee
I have an old OS 35H R/C engine that was given to me in 1977 and I flew it for 3 years until circumstances kept me from flying until now. Boy have things changed!
Anyhow, I succeeded in getting it freed up from it's stiff condition but I rounded out 7 of the 10 screws trying to open it up to clean it up. Now I'm afraid to try to tighten them down because they just might not get tight enough. I was in contact with Tower Hobbies and was told my engine was made in 1966 and parts are no longer available.
Tower referred me to 'bbhwc@mitec.net' saying that person deals in older engines but I've not received any response. I would hate to junk what I think is an engine that still has some life in it, but I'm not sure if I'm at a dead end here.
If you have any thoughts as to any possibility I might have in this regard it would be greatly appreciated. I didn't buy it so in that sense it wouldn't be a loss, but it is sort of sentimental in that it was part of my entering into the fun of R/C flying.
I have attached photos of this engine in case it helps identifying it.
Thanks for any help you can give me.
B.K.
Dear Mr. K,
Although your O.S. 35 is 30 years old, screw types and sizes have not changed. Your engine has what are called Fillister, Phillips head screws which are pretty standard. However, they are probably metric thread which are a little harder to find in hardware stores, etc. Great Planes probably could not help you due to screw sets for this engine not being listed in their computer.
You should try Hobby Services that repair the O.S. engines and would have loose screws. I should imagine that screws from a modern day O.S. 40 etc., would fit. phone: 217-398-0007. Fax 217-398-7721. If they don't have Fillister, Phillips, socket head cap screws that are more common now could
be substituted. You could also try Micro Fasteners that advertise in most
of the model magazines. Phone 1-800-892-6917 fax 1-908-236-8721. I do not have any metric screws, but If you want to send me a head and backcover screw in a padded envelope along with return postage, I can tell you the sizes you need so you could check some of the screw suppliers in your area. For my business address, see my ad in MAN's clasified section.
Clarence Lee