losing cable and prop

[FRED]

I was reading about Impulse 31 losing the drive line. There is a devise that is cheap and works. Now a small waterline hose that fits tight will prevent such a lose placed at coupler and doesn't touch stuffing tube or coupler and canbe hard to slide on.

[oscarel]

Airplane wheel collars http://www3.towerhobbies.com/cgi-bin...?&I=LXD835&P=0

[Fluid]

Wheel collars have been comonly used to retain flex cables for years. Just make certain to afix them tight against the motor coupler, not the stuffing tube. With time they can damage the flex cable, although less than a set screw coupler does. Even better are the shaft savers from Redline Motors. No damage from these.

http://shop.redlinemotors.us/Shaft-Savers-5pc-RLPM-S5.htm

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[FRED]

I forgot; solder the cable ends that go into coupler helps with set screw couplers to cut down on cable damage.

[silvermansteve]

wait. you put this on directly downstream of the motor coupler, and the device is then too big to slide down the tube? and this thing just spins along with the flex shaft like the collett does, right? why doesn't everyone use 'em? do they add vibration? excessive wear on the rotating parts?

[siberianhusky]

Just another unneeded part in the drivetrain, Don't see too many people loosing driveshafts out of the collet unless you forget to tighten it up, it's worn out or just a cheap POS!
Something to retain the stub shaft would be cool, save the prop if you break the cable to stub joint which is much, much more common.
Not up on any issues with the Impusle so I really don't know where they are losing the driveline from. In the past a number of RTR boats from different companies have had problems with the stub to cable joint failing. The shaft saver wouldn't help for that, you'd just save the broken off flex cable and the stub shaft with the prop will be on the bottom of the pond.

[FRED]

I posted this to help boats and if they wish not to use it , it
s their discrection.

[Eodman]

Fred, thank you this is great trick .... especially for fools like me!