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Old 07-24-2014, 11:46 AM
Gmoney Gmoney is offline
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Join Date: Jul 2014
Boat: 1996 mastercraft
Location: Northeast
Posts: 8
How to determine the shaft size on the boat

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
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Old 07-24-2014, 11:49 AM
mcmx2 mcmx2 is offline
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Boat: 2005 TT 197 #77
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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.
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Old 07-24-2014, 11:57 AM
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TresRiver205 TresRiver205 is offline
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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.
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Old 07-24-2014, 11:59 AM
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east tx skier east tx skier is offline
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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.
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