sportmaster fatshaft to small shaft?

[allisonalley]

If I have a 2.5 fatshaft propshaft from a sportmaster gearcase, can I turn it down and re-spline it to replace a small shaft? or are there more differences itn the two shafts? I'm looking at pictures, and they look the same. Are these things hard chromed? and if they are, when I turn it down, should I re heat-treat, chrome, and grind?
Thanks for the info in advance!

[Bartman39]

They are the same other than the prop area... Would be alot simpler to offer it in trade to someone with a good small shaft version... Heck you might even get a little "boot" money or have them pay shipping for both...

In other words the "fat shaft" is worth more...:thumbsup:

[JR IN JAX]

The small shaft will leave your prop and it on the bottom.

[AirRide]

Or...you could simply use/install the 1 1/4" shaft, and just buy a 1 1/4" Merc prop hub insert?

[YELLOWSS]

i would swap with someone.. i run both. it sucks if you have a great prop, and can only run it on one lower unit.

[allisonalley]

Thanks for the info. I've been looking for a small shaft, and they are kind of hard to find. I was playing with the idea of making my own. I think I could make one from a special steel we use at work to make one. It's harder and stronger than other steels, it is more shock resistant, tougher, and has a lot of nickle which makes it corrosion resistant. I can case harden it and hard chrome the wear surfaces. I think it would withstand more abuse than the stock shafts. (I think they are made from 4340) I was just wondering if anyone else has played around with making their own.

[David Borg]

contact Noah at Eagle One, Im pretty sure he can help you with a good used propshaft at a decent price . He is a supporting vendor here.

[Specialized P4-12]

i got a small shaft in perfect condition will trade if u want.. they are totally different.. let me know..