OS 70 on 4* 40

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05-14-2006, 10:36 PM

plowboy

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OS 70 on 4* 40

I have a beat up 4* 40 and an OS 70 surpass laying around. Would the plane be fun with this engine or would it fly crappy because of the weight up front? Thanks.

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05-15-2006, 09:22 AM

MinnFlyer

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RE: OS 70 on 4* 40

Great Combo! Go 4 it!

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05-15-2006, 10:06 AM

Campy

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RE: OS 70 on 4* 40

Good combination. I would start with a 13x6 prop and go from there depending on what you want to do.

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05-15-2006, 01:16 PM

GarySS

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RE: OS 70 on 4* 40

Since it is "Crappy" anyway, you might consider clipping the wings one bay on each side and slightly reducing the dihedral to improve aerobatics.

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05-16-2006, 08:07 PM

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RE: OS 70 on 4* 40

I'm building one right now for my O.S. 70. It's not at all too much weight--some people with engines of similar weight have had to add nose weight to get it to balance. Jim