Hi all, I am in process of designing an outboard that can handle 35000rpms and 4000+ watts. I plan on using a 1/4" flex system with it. My design goals are:

5692 motor size
Can use off the shelf flex cables (1/4 flex to 1/4 stub shaft or 1/4 flex to 1/4 stub reduced to 3/16 for different prop choices)
Can use a standard flex hex
Oiler system with oil reservoir
Replaceable brass stuffing tube.
Built in water pickup for motor
Scale appearance (looks like a full scale outboard)
Speedmaster style floating bushing system
Can fit the MHZ 1/5 scale cowl over the motor.

Anything else you guys think I should add to the list?

I have one big problem with this project and that is the flex cable. I know it is best to have the flex as straight as possible but that will make the scale appearance hard to accomplish. It is possible to have the flex bend to a 90 degree angle and still be reliable.

I am looking forward to the feedback.

Thanks!
Rich