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Engine basics => Engine set up tips => Topic started by: sadams714441 on March 06, 2006, 12:57:35 PM

Title: OS 45
Post by: sadams714441 on March 06, 2006, 12:57:35 PM

Randy
I have an OS 45 that has delrin vent and needle valve assembly that I have had sitting around for many years. It was a gift from a friend.  Is this engine ok for stunt ?  If so how much rework is required ?  Thinking of putting in the on-line build plane.

Title: Re: OS 45
Post by: RandySmith on March 07, 2006, 10:42:02 AM

Steve
many people  used that motor with great success, It does however  Have  to be  loaded properly, this means  run a  12 or 12.5 inch  4  to 4.5  pitch prop  or  a  12 x 4.25  3  blade. If you run a  5 or 6 pitch prop on the FSR  you may get some  serious  wind-up in the wind
I would use a  275 venturie  with a  standard 157 diameter  ST  or  PA  NVA

Randy

Title: Re: OS 45
Post by: sadams714441 on March 07, 2006, 02:14:58 PM

Randy
I checked the engine last night. (OS 45)  Havent turned it over in long time, now it wont turn over. Didnt want to force it so I left it alone.  Will send the engine so you rework it.  Do you have a cost on this one ?

Steve Adams