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HomeAircraftHelicopterCentury Radikal G20-30 N640 Hawk Predator › Just got a century predator
12-31-2010 02:32 AM  7 years agoPost 1
UKhelinoob

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Michigan USA

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Hi. I got a century predator from a guy here on RR. The heli had a Webra 75 in it. But I'm replacing it with a OS 91 SX. Can I still use the gearing that's in the heli or do I have to change the gear to a different number of teeth on the clutch bell..

Thanks..
Mike..

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12-31-2010 04:24 PM  7 years agoPost 2
UKhelinoob

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Michigan USA

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wow cat got all your tongues or you just don't talk here..

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01-02-2011 01:33 AM  7 years agoPost 3
eeeeky

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Roosevelt UT USA

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Hello there, welcome to the predator club, you wont be disappointed. Can you give us a gear count on the main, and pinion gears? That os 91, is going to like 8.18:1 the best. For that ratio you need a 90t main gear, and an 11t pinion.

Lets Fly!

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01-02-2011 01:52 AM  7 years agoPost 4
UKhelinoob

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Michigan USA

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Thanks for replying back. My heli has 11 teeth on the bell pinion, and 94 teeth on the main gear..

Mike..

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01-02-2011 02:13 AM  7 years agoPost 5
eeeeky

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Roosevelt UT USA

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Thats 8.54. Def a little better for a smaller engine. Your going to way to get a 90t main gear, if you can. You can fly it the way it is, it just wont be as goosy as you may want it. It wont be lacking at all

Lets Fly!

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01-02-2011 02:18 AM  7 years agoPost 6
UKhelinoob

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Michigan USA

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Ok for Now I'll leave it, cos it looks quite a job replacing it, as for the heli, it's a complete airframe. Though I didn't get any main blades with it. Should I get 720mm or a bit smaller say 710mm..

ERr what does goosy mean??

Mike..

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01-02-2011 02:44 AM  7 years agoPost 7
eeeeky

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Roosevelt UT USA

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Its not very bad to change the main gear, thats all youd have to change. Id stick with 710s. Goosey is what i meant to say, and i was meaning like "ooooomph", guts, power.

Lets Fly!

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