How to determine the shaft size on the boat

[Gmoney]

Hello, I have a 1996 mastercraft pro star 190. I was to determine the size of the shaft that runs from the transmission down to the prop. I read on the transmission name plate it says 1-1. I was told by a mastercraft mechanic that is how you know the size of the shaft without measuring it. The mechanic never did tell me the size and I was just wondering if anyone knew what it was?

Thanks in advance

[mcmx2]

If you have a 1:1 transmission then you have a 1" shaft. If you have a 1.52:1 transmission (Powerslot) than you have a 1-1/8" shaft.

[TresRiver205]

And on a complete frigging side note. G-Money was my nickname in HS Volleyball 30 years ago. Thanks for reminding me, had totally forgotten that.

[east tx skier]

This is true on your 1996 190 and all boats with tapered shafts. At a certain point, I believe with the implementation of splined shafts, all of them are 1.125". Someone please correct me if I have that wrong.