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Old 08-18-2008 | 07:13 AM
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G-Pete
 
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From: Allen, TX
Default RE: CMP BF109F BUILDING THREAD
ORIGINAL: Schummie
Hello there,
According the specs, engine size starts with 1.2 2-stroke. I happen to have a 120 AX OS. Is this a good idea, or will it be way underpowered. It turns a APC 14x10 or 15x6 according to OS specs, and delivers 3.1 HP at 9000 rpm. I just want to fly scale like (but the sound, I know). But if it's way underpowered I'll wait untill I've saved enough to buy me a bigger engine.
Thanks,
Eric Schumacher, Netherlands.

9000 RPM with a 15X6 propeller produces 12.3 pounds thrust.

The HP is 1.582

If your engine can spin a 18X6 with 9000RPM then you have 3.280 HP (I doubt it)

This engine will fly that airframe - but just fly... forget nice loops.

Happy landings
G-Pete


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