Everything Radial Engines
#3904
Junior Member

Hey y’all. Figured this might be a good spot to ask about an engine I am inheriting. It’s an O.S. FR7 420 Sirius. The gentleman who owned it only ground ran it twice. It has never flown. I don’t believe the engine will turn freely right now. I will go pick it up in May and find out. Any advice on how to proceed with it? I would like to fly it but cannot find a suitable kit or plan from my modest collection. Any recommendations? I would like to perhaps find plans for an Air Tractor 401, or Stinson, or Howard, or whatever, of the right size. It is about 10” diameter. Help?
Chumpy77
Chumpy77
#3905

My Feedback: (156)

Hey y’all. Figured this might be a good spot to ask about an engine I am inheriting. It’s an O.S. FR7 420 Sirius. The gentleman who owned it only ground ran it twice. It has never flown. I don’t believe the engine will turn freely right now. I will go pick it up in May and find out. Any advice on how to proceed with it? I would like to fly it but cannot find a suitable kit or plan from my modest collection. Any recommendations? I would like to perhaps find plans for an Air Tractor 401, or Stinson, or Howard, or whatever, of the right size. It is about 10” diameter. Help?
Chumpy77
Chumpy77
Flies it very scale and fits the cowl like a glove.
You should be VERY careful about buying a used glow radial. IF the previous owner did not run it totally out of fuel then squirt lots of After-run oil and thoroughly work that through the engine, there could be RUST inside the engine.
#3906
Senior Member

Hello all saito fa-325r5 now have the main needle from Saito fa-100.
I helped a friend with the same problem and they got better.
now I don't know how old your engine is!!!
I helped a friend with the same problem and they got better.
now I don't know how old your engine is!!!
#3907
Junior Member

Wow! Well I’m not purchasing it, literally inheriting it from my best friend’s father’s passing. I taught the man to fly R/C back in late 70’s. I am intending to open it up to inspect for corrosion. Thank you for the response.
Chumpy77
Chumpy77