Decent prop shafts

[Rody Roem]

Very good info Jim and MIc

Thanks to all that replied.....keep em coming if anyone else has something to add

Gino

Have you ever checked this solution?



http://www.amainhobbies.com/product_info.php/cPath/4_1631_1766/products_id/205720/n/TecnoPower-Replacement-Prop-Shaft-Assembly

Its doesn't have the pin going through the main-axle so it normally cannot break.

 

[Jim Allen]

Note: The original new leaded teflon bushings will allow a .251" shaft to pass through. Since all the K&B shafts measure .247"- OD, a brand new unit already has .004" total clearance before you run it.

Jim,

Would it be feasible to have the K&B shaft hard chromed then ground down to a more appropriate diameter / clearance, as opposed to having a new shaft fabricated from better material & requiring the broach?

Tim

Yes, that will work. The shaft will last forever, providing hard industrial chrome is applied. Keep in mind that the shaft is still soft, which means it will bend if the prop hits something.

 

[Jim Allen]

Very good info Jim and MIc

Thanks to all that replied.....keep em coming if anyone else has something to add

Gino

Have you ever checked this solution?

View attachment 29736

http://www.amainhobbies.com/product_info.php/cPath/4_1631_1766/products_id/205720/n/TecnoPower-Replacement-Prop-Shaft-Assembly

Its doesn't have the pin going through the main-axle so it normally cannot break.

This looks okay, providing the correct materials are used. The information does not say it can be used in the K&B 7.5 lower unit.