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Thunder Tiger 61 pro prop ?
OK...just got a new TT-61 pro for an old bipe a guy gave me. I got the 11X7 that was recommended for break-in. I have a three flights on it now. I think this might not be enough prop. What are you guys using, and what do you recommend?
as for the plane, it is an old aeromaster bipe (I think that is the name). It seems like a brick in the air! I am looking for reliable flight and decent pull around the sky. There is NO WAY this thing would think of doing precision aerobatics with the bell crank system for the ailerons. Also, as I am concerned about flutter with the inherent play in the ailerons, I am not looking for top speed. (not that one would think a bipe a speedster). Zee |
prop
I'd try a 12x5 for pull or 12x6 for a little more speed.
The 11x7 would be for a very fast plane. I've got a 61 on a 7+ lb. Seamaster. The 12x5 is perfect on it. Kirk |
Thunder Tiger 61 pro prop ?
If you're willing to pay the $8 to experiment, get an APC 13x4W. They label it as a "3D Fun Fly" and charge much more than a "Sport" prop, but I really like mine.
I have the 61 Pro on a Global Right Flyer 60 and the 13x4W works great. My engine has a good low idle, but would float forever with the 11x7. The flatter prop lets it slow down for landings; I just have to learn to do them. |
RE: Thunder Tiger 61 pro prop ?
My senior telemaster has a 12-7 Graupner on it works great!
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RE: Thunder Tiger 61 pro prop ?
I ran in my new TT 61 PRO yesterday.
The Engine appears to have the same quality as O.S. Max. I used an OS helicopter carburetor (60K) and two different mufflers. The OS standard muffler and the Jett-Stream muffler. Prop: 11x8 Graupner grey Fuel: 20% Castor 80% methanol FAI mix Plug: Enya 3 Temp: 68°F Height: 300ft After about 10 oz of fuel I got the following readings: OS stock muffler: 11200 rpm Jett-Stream muffler: 12900 rpm |
RE: Thunder Tiger 61 pro prop ?
ORIGINAL: FlyingZee OK...just got a new TT-61 pro for an old bipe a guy gave me. I got the 11X7 that was recommended for break-in. I have a three flights on it now. I think this might not be enough prop. What are you guys using, and what do you recommend? as for the plane, it is an old aeromaster bipe (I think that is the name). It seems like a brick in the air! I am looking for reliable flight and decent pull around the sky. There is NO WAY this thing would think of doing precision aerobatics with the bell crank system for the ailerons. Also, as I am concerned about flutter with the inherent play in the ailerons, I am not looking for top speed. (not that one would think a bipe a speedster). Zee In 1979, not only was I doing precision aerobatics with an Aeromaster, it was powered by a ST G60 blue head and a 12x6 prop :) Rigged properly, the bellcranks works very well. Considering, in 1979, that servos cost around $35-40 each (then prices) the bellcranks were worthwhile. Yes, a far cry from what we demend of things today, but just a bit of a history lesson from the days when airplanes flew, rather than hovered [sm=sunsmiley.gif] |
RE: Thunder Tiger 61 pro prop ?
My Senior Telemaster has a 12X6 Scimitar on it and IT flys great...
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