Posted by ChrisWNY |
May 31, 2011 @ 10:42 AM | 10,369 Views
So one of the many battles the RC'er fights when building/assembling a RC helicopter is eliminating vibrations. After building nearly a dozen RC heli's over the past few years, I figured I'd write a quick beginner's how-to in order to simplify the process, as there is a lot of conflicting information out there on the web and some of the info is rather daunting.
What sort of harm do pronounced vibes cause on a RC Heli? Well, first of all, too much vibration can literally shake your heli apart during flight making it dangerous to fly, a badly vibrating RC heli is a crash hazard and should not be flown. Secondly, pronounced vibration can interfere with Gyro operation, making it difficult to control your heli during flight.
Here are some tips that I hope will help beginners...
(1) Don't be so quick to install all your blades and paddles at once before you spin up that motor for the first time! Spin up with no blades or paddles in the head or tail to get an idea of how bad your heli vibrates (if at all) with NO blades installed. Ideally you should not have noticeable or bad vibration here, but if you do, double check that you have tightened your main blade grips to your feathering shaft and that there is NO play in the blade grips (they should not "jiggle" back and forth). Also make sure your tail grips are tightened in the same manner. Double-check your flybar measurements with a digital caliper, you need to be as accurate as possible to ensure flybar length is