Any parameter changes required when using the 3DR 880Kv motors with 11x4.7 props?
Any good way of tightening the prop nut? I am using an allen wrench through the nut but how do you hold the motor from turning? I wish there was a custom wrench to fit the cooling fins on top.
Replies
Do you have the newer style of motors or the older style that uses the collet 'shaft grip' type?
-=Doug
Interesting... recently gave up on the standard 880Kv nuts myself. Disappointed, too, that the "new" motor/prop solution from 3DR involves replacing the prop shaft and affixing a completely different prop mount. AND, to find that some of my motors are tapped for the new 3DR adaptors, and some motors have no holes whatsoever.
(see also: http://3drobotics.com/wp-content/uploads/2013/05/Propeller-Fastener... & http://store.3drobotics.com/products/propeller-fastener-and-shaft-k... )
I took my problem over to HobbyKing and found much more sturdy and more easily tightened prop adaptor collets. These are a little larger than the 3DR ones (a tiny bit heavier & less likely to bend on minor impacts), and the collet itself is cut at a different angle that seems to allow greater pressure (using an allen to tighten) on the motor shaft than the 3DR collet adaptors:
http://hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=38715
The best thing I find is you hold the motor using your thumb and finger firmly and use the key as you do now
Over tightening can lead to a damaged or weakened prop center, or risk stripping threads
Use of a nylon lock nut is a much better solution for safety and balancing anyway
Loctite. Ample amounts of the 242 (aka Loctite Blue). DO NOT USE 271 (aka Loctite Red) as that will permanently fix those puppies to the motor.
READ THE LABELS: My 242 came in a RED container, and my 271 came in a BLUE container. The irony I know.