right size motor coupler

[Jabbo]

I have a PB fastec and want to put a octura motor coupler on the motor. I know the output shaft on the motor is 5mm but cant figure out what the flex shaft size is it measures 3.7mm diamater but all the couplers range .150?? does anyone know the proper coupler i should get?

[Karfrik]

contact Jeff Wohlt here in the forum.He`s an expert in this matter and can provide/build you odd couplers if no one have them in stock,....

[Steven Vaccaro]

3.7mm is about 1.45". So a .150 collet style coupler should work.

[Jabbo]

Thanks