Square end flex coupler for FE?

[FE Wannabe]

Does any one make a flex cable coupler for square end flex cables that can be attached to a brushless motor? I have seen threaded couplers for nitro and gas engines but not yet for electric. I like the idea because the flex cable could float in the coupler and not put any direct force on the bearings in the motor. Has anyone tried this yet or have any reasons why this isn't a good idea?

[raptor347]

Fullers has a 5mm-.150 coupler for the outboards. There may be some others in the works.

[Steven Vaccaro]

Hyperperformance has a bunch of sizes. The problem is getting flex cables in the correct length. Also the thrust has to be put somewhere. With that system its taken at the strut. With smaller hub struts I thinks its better to take it at the motor with a thrust bearing.

[FE Wannabe]

Thanks for the replies. I was planning on using a .187 square end flex cable like the nitro guys use, so I am assuming that the strut would be able to handle the thrust.
I was planning on doing the bushing modification to a KB45 8XL that was mentioned on a RRR forum. The mod is supposed to "loosen up" the motor by removing .010 off the length of one of the bushings inside the motor and that supposedly makes the motor run cooler with less amp draw. However, the play in the motor may lead to increased bearing wear than stock if it was directly taking the thrust from the flex shaft. That is the reason I am looking at the square end flex shaft as an option.

[raptor347]

You can get long cables with squared ends. Cut them to length and silver solder them into a ferrule (Hyper Products). The system works well but tends to let more water into the hull than a sealed strut/stuffing tube combo.

Honestly, I'd do the bushing mod if the motor is too tight. Then go with a conventional .187 cable and a flexhex backed with a thrust bearing just as Steven recomends.

That's the combination I run in my P mono and my 115 mph P SAW hydro. Absolutely dead reliable.

[FE Wannabe]

Thanks for the advice, that is the info I was looking for.
I will trust your experience and I will try the thrust bearing behind the flex coupler and let it take the load off the motor.
Thanks again guys.
Brad