Difference between the K&B prop shaft and OS

[Raydee]

My buddy is building a G30 tunnel and wants to order the Lawless 3.5 drive to match my boat that I bought used. How can I tell which prop shaft I have in my drive, K&B or OS? Is the thread and pitch different?

 

[Grimracer]

The two are very different.. ANYTIME.. you can use the OS do so.

Grim

 

[Zach Davis]

My buddy is building a G30 tunnel and wants to order the Lawless 3.5 drive to match my boat that I bought used. How can I tell which prop shaft I have in my drive, K&B or OS? Is the thread and pitch different?

Can you post a picture?

 

[Raydee]

The two are very different.. ANYTIME.. you can use the OS do so.

Grim

I keep seeing that the OS is the way to go but after talking with Fred at Lawless it appears mine is K&B. I am using the Hyperformance shaft and it seems like a nice unit. It says that the Hyperformance shaft is not compatible with OS so if I went with the OS version which heavy duty shaft is the one I should be looking for?

 

[ricwally]

Hyperformance doesn’t make a shaf for the O.S. drives. If you have an Hyperformance shaft in one of Fred’s unit or will have no issues as long as you keep it lubricated. I believe that the O.S. Shafts are 9mm..