What Would Be A Good Modern engine To use On Sterling Ringmaster S1. Assuming You Used The Oriinal Wood And It Came Out Heavy As In Heavy.Dont Wont To Use Period Redhead Or Fox. Sport Flyer Only,Of Course.
engine choice
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ditto
I would go with an OS .35. Gobs and gobs of power, wide range of needle setting, easy to start, spins darn near any prop.
My Sterling RM, built with the sterling wood, came in at about 35 ounces RTF.
FYI- I have FAR less expierience than many here, but I swear the OS .35 MAX FP has been my favorite engine. It has flown a variety of planes and has always been excellent. And it's BONE STOCK.
I swear the thing would run on nail polish remover. It flat out doesn't care. User friendly to the nth degree.
Simple.
OS 25LA with a APC 9x4 prop.....Perfect Combo. Mine flies great and has plenty of power. I think the OS 35FP would be to heavy and would require tail weight to balance. No point in using the original wood if it's heavy, replace with some good light stuff. The majority of Sterling kits had heavy wood....if you could call it wood!
John
Although the OS 35 FP would be more power, it is heavier. No exerience with the LA engines, but have seen a bunch of them run very nicely.
Ringmaster hve flown extremely well with a Veco BB 19, though no longer made. We fly a little larger plane with a Webra 28, which ws the one Bob Hunt originally had in his Tucker Special.
Bill <><
Ringmaster hve flown extremely well with a Veco BB 19, though no longer made. We fly a little larger plane with a Webra 28, which ws the one Bob Hunt originally had in his Tucker Special.
Bill <><
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Another very good choice is the Magnum XL .25/.28. The .28 is an overbored .25, so is a little lighter, as well as more powerful. Both are twin ballbearing, and real ABC. You will need to get a venturi and NVA for either. Scott (I make 'em) Riece makes them. A tongue muffler may be of help to balance the model, tho the stock muffler is (only) 56 grams. A Fox .35 RSM tongue muffler fits & is only $15 or so. Use the muffler to balance the model, as much as you can. A 10-4 APC should work well, but may need clipping down a bit. 
Steve
Steve
For sport flying consider a PAW .19 single ball race with the muffler.
A buddy of mine has this engine on an old heavy S-1 and it flies very well, rock steady and super line tension. He's learning the pattern with this rig. I believe it uses has a 2.5 oz tank. Andy
A buddy of mine has this engine on an old heavy S-1 and it flies very well, rock steady and super line tension. He's learning the pattern with this rig. I believe it uses has a 2.5 oz tank. Andy