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post #1 of 6 Old 01-30-2016, 06:19 PM Thread Starter
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Pulley Size

Appreciate all the help, as this is my first repower. I am going from a Tec. HM80, with a 1" shaft, to a Predator 212 with a 3/4" shaft. My Tec. has a 2.75" O.D. pulley. Should I get the same (2.75") or a 3" O.D. for the Predator. The Tec. has a 1/2" belt. Thanks
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post #2 of 6 Old 01-30-2016, 06:28 PM
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if you think the blower will handle a few more rpms up front, 3" would increase performance slightly, it will also increase ground speed tho. i may replace the bearings in my old ariens , and up the pulley size a bit...just because !!

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post #3 of 6 Old 01-30-2016, 07:01 PM
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I had a 7/8 to 3/4 change to make on my repower. I used a piece of 3/4 EMT conduit and ground a slit down the side. I wonder if you could do the same with a 1" EMT? Just a thought......




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post #4 of 6 Old 01-30-2016, 08:10 PM
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Quote:
Originally Posted by Landngroove View Post
Appreciate all the help, as this is my first repower. I am going from a Tec. HM80, with a 1" shaft, to a Predator 212 with a 3/4" shaft. My Tec. has a 2.75" O.D. pulley. Should I get the same (2.75") or a 3" O.D. for the Predator. The Tec. has a 1/2" belt. Thanks
Unless you have calculated how much longer the belt should be to accommodate the larger pulley, I'd stick with the same size diameter pulley.

The difference in pulley circumference is nearly 8/10ths of an inch. Maybe the Idler can be adjusted to fit; but you wouldn't want to get it all back together and only then find out that you need the larger belt.
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post #5 of 6 Old 01-30-2016, 08:30 PM Thread Starter
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I have 2 problems with using the original 1" pulley, with a sleeve. First, it is really rusted onto the shaft, and even if I could get it off without distorting it, it has a 1/4" keyway. My new 212 Predator has a 3/16" keyway.
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post #6 of 6 Old 01-30-2016, 08:57 PM
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jmo....get the right pulley for the shaft......add some diameter at your own risk .

24 " 1967? Ariens Sno thro
28 " Ariens Sno Tek
Toro CCR ss
1966 Gravely LI Walk behind with dog eater

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