engine for 4-120  
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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Engine Manufacturers Direct Support Forum >> RCV Engines Support >> engine for 4-120
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engine for 4-120 - 12/20/2002 7:22:55 PM   
SHARK


 

Posts: 65
Joined: 5/20/2002
From: Sheboygan Falls, Wis. USA
Status: offline 		I am working on an older kit, an Ace 4-120. It has an 85 inch wingspan and the box says it will weigh 13 pounds - pretty heavy for today's standards. I have a 25cc gas engine I was going to use, but I have been interested in the RCV engines and started thinking of getting one for this plane instead.
Would the 120 be the best choise? Would the 90 fly it? I don't care about going straight up or having excessive power, so long as it can loop and roll easily. The kit was designed for 120 four strokes. Thanks Jim S.
       Post #: 1

engine for 4-120 - 12/21/2002 6:32:20 PM   
Otto Kudrna



Posts: 373
Joined: 2/19/2002
From: Burr Ridge, IL, USA
Status: offline 		Hello
As long as you are not expecting to do 3D aerobatics the RCV-120 will fly it beautifully. I would use a Zinger 18x14 or 20x12 prop and keep the RPM down to about 4500-4700 revs. If you need to go to a larger prop to keep the revs there than by all means do so. I would strongly recommend that the engine be broken in using my procedure to extend the longevity. Please Please Please use a good fuel. If you have any questions please call me (630)321-0580.

Otto Kudrna

(in reply to SHARK)
       Post #: 2

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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Engine Manufacturers Direct Support Forum >> RCV Engines Support >> engine for 4-120
Page: [1]





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