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HomeAircraftHelicopterFuel-Helicopters New or Limited ActivityQuickWW › WILL BIG BERTHA handle a 90
10-13-2005 04:36 PM  12 years agoPost 1
Magnumeng

rrVeteran

29 Stumps, CA

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Irwin,

I have been looking at the Big Bertha for my next Copter. Will it handle a 90 size engine? Or is there an upgrade for it? Thank you.

TDR, Kontronik Kosmik Cool 200, Kontronik 750-56, CGY750,
Team KBDD

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10-13-2005 07:42 PM  12 years agoPost 2
Quick Worldwide

rrKey Veteran

Coopersburg, PA

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Bertha 90 gets a 12 tooth pinion
Hi,

The Big Bertha will handle the 90 no problem...we also have the a 12 tooth pinion for the proper gear ratio.

We have been flying the Bertha with a 70 for me enough power but in Germany there are many flying now all with 90's

If you order Bertha make sure we pack it with a 12 tooth for you...

Thanks Irwin

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10-14-2005 01:11 PM  12 years agoPost 3
Magnumeng

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29 Stumps, CA

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Irwin,

Thanks for the quick reply... Have a little bit more research to do on which 90 size engine and servos to put in the Copter.

TDR, Kontronik Kosmik Cool 200, Kontronik 750-56, CGY750,
Team KBDD

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