Re: [RCSE] Line & FAI events

[Michael Lachowski]

The old coaster sprockets just aren't what they used to be.  They are 
not really designed for the RPM of a winch.  When I used to use them 
long ago, I found some brands that held up.  Cheap ones didn't make the 
first launch.  I use KK-25 one-way bearings now.

Generally if they hold up a few days, they will last a while.
James V. Bacus wrote:
At 07:39 PM 3/5/2005, [EMAIL PROTECTED] wrote:
HI James and others,
we used to use coaster sprockets on our old winches (pre moulded models)
when we pulled less tension and they worked pretty well, but as the 
setup of
the models got better we started destroying them fairly regularly. We now
use KK series one way bearings with a shrink fit collar on the outside to
lock the bearing up.

Yes, I am sure that is a better solution.  I have launched off some FAI 
winches that used a positive locking mechanism you set a pin into.  The 
coaster brake works pretty nicely for the tap-tap-tap style of launch 
one does with twine, if the wind is strong you can get enough tension to 
ride the brake up, thus not reeling in extra line.
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