askman's blog archive for October, 2012 - RC Groups
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Archive for October, 2012
Posted by askman | Oct 02, 2012 @ 11:36 AM | 15,141 Views
It seems like I've been answering lot of question about Jello lately, so, I want to put some basic primer on vibration control today. There is NO EXCUSE to have jello or vibration in your AP/AV multicopter and if you have it, you need to kill it and it all starts at the Source.

PROPS: Lousy balancing of props are the biggest cause of Jello. Cure starts with high quality props and good balance job. here is a good video on prop balancing: I know some prop makers say their props are prebalanced. well, may be good enough for Nitro plane, but not good enough for AP/AV.

prop balancing video tutorial (5 min 5 sec)

In general, larger the prop, more critical it is to balance the prop in both blade, tracking and hub. I've found that sub 10" props are much easier as hub balance gets less critical, but most AP/AV setup requires larger prop. Even Graupner props will need some work in balancing, but usually less so. Why lot of graupners gets used in AP. APC props are notorious for poor hub balance and requires lot of work to get them to perform well. Even my favorite zingers requires balancing (but easier since I can sand down the wood ) Invest in good balancer and learn to balance your props. I've been selling lot of zingers for multicopter AP use, as they do really well in wind flying. not the most efficient, but very stable. I would avoid cheaper nylon props. In general, EPP props are lousy for AP/AV. heck, I don't even...Continue Reading