ok i feel really dumb asking this question...

[stlcheckmate]

So I have a 15 spline case, and I was wondering whats this fatshaft, or can I run a flo torq hub prop? Feel kinda dumb asking this for some reason cause I dont know..so I asked..

Chris

 

[Chris E]

i'm assuming you have a merc, so if so, the flo torq should work, as it works on most merc product.

 

[83PREDICTOR]

I belive the small shaft is 1" dia and the fat shaft is 1 1/8" I belive.

 

[stlcheckmate]

I dont have the small case anymore I have the 15 spline large case..so is mine a fat shaft? and yes I have a merc

 

[83PREDICTOR]

I belive the small shaft is 1" dia and the fat shaft is 1 1/8" I belive.

I know that you have a large case now. I saw your post a while back and we had a few PM's reguarding it. The small case and the large case have the same 15 spline shaft. That is why your 24P LaserII that fit your small case will also fit the shaft of our large case. I belive the larger 3L engines with the same large case have the "fat shaft". If non of this is understandable to you just go and measure it!

 

[bluehealer]

Fatshaft

You could get any 3 liter with either the standard (1")15 spline small shaft,or the(1 1/4") 19 spline fat shaft.The flow torque allows you to utilize any newer Merc. prop with any size shaft, with either(2 different sizes) flow torque adapter.Hope this answers your question.
Bluehealer