50 gear ratio? [Archive]

konakurt

09-09-2006, 04:21 AM

Hey guys,

I'm a newbie to all of this, so please excuse me if this sounds lame. I was wondering what the gear ratio is on a stock Raptor 50 V2? I was also wondering what is the formula to figuring this out? Can somebody please educate me on this matter? Thanks, Curt.

Jafa

09-09-2006, 04:26 AM

It the number of teeth on the main gear divided by the number of teeth on the pinion
The Raptor 50V2 is 8.5
So if you have main rotor (head) speed of 1800
the engine rpm is 1800 * 8.5 = 15,300

konakurt

09-09-2006, 04:30 AM

Thanks for the quick response Jafa. Aloha Curt.

BarracudaHockey

09-09-2006, 04:54 PM

Just an FYI, there is a specs chart on the manual that lists length, height etc, the gear ratio is usually on there somewhere.

konakurt

09-09-2006, 08:02 PM

Thanks Baracuda. I bought the heli online used and didn't have the manual. I've since downloaded a copy from RaptorTechnique. Thanks again, Aloha Curt.

BarracudaHockey

09-09-2006, 09:08 PM

You can get the factory manual here:

http://www.acehobby.com/ace/manual.htm