Predator to Ariens V belt pulley - Snowblower Forum : Snow Blower Forums
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post #1 of 14 Old 03-17-2015, 10:11 PM Thread Starter
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Predator to Ariens V belt pulley

Friend of mine installed the 6.5 hp predator motor but it has the 3/4 shaft here is the Ariens pulley
Any one know what I need??
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post #2 of 14 Old 03-17-2015, 10:40 PM
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what size is the ariens pulley. measure the inside diameter
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post #3 of 14 Old 03-17-2015, 10:50 PM
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Get a reducing sleeve... 3/4 to 1 inch. I did that and works perfect for me, could even use the same belts.
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post #4 of 14 Old 03-17-2015, 10:59 PM
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post #5 of 14 Old 03-17-2015, 10:59 PM
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Any Decent Hardware store will have Bronze Bushings you can use. You'll have to grind a passage through the bushing for the keyway. You'll also need to fab a larger Key that ties the crank through the bushing and into the original Pulley.

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post #6 of 14 Old 03-18-2015, 12:33 AM Thread Starter
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I think the sleeve is going to be a great idea!
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post #7 of 14 Old 03-18-2015, 12:37 AM Thread Starter
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what size is the ariens pulley. measure the inside diameter
Its 1"
This is strange he gave me the blown 7hp and I picked up a 7hp Ariens but the motor that I got has a 3/4 shaft as well, oh no so I'm thinking the other parts will not fit, flywheel and such
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post #8 of 14 Old 03-18-2015, 12:44 AM Thread Starter
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Here is the 7hp I'll get a photo of his old 7 he had bolts in the auger?
So I'm guessing this is the newer motor, and his 1" shaft is the older type will parts interchange ?
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Last edited by Ken692; 03-18-2015 at 12:51 AM.
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post #9 of 14 Old 03-18-2015, 10:43 AM
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Quote:
Originally Posted by Ken692 View Post
Here is the 7hp I'll get a photo of his old 7 he had bolts in the auger?
So I'm guessing this is the newer motor, and his 1" shaft is the older type will parts interchange ?
Ken,

I doubt the flywheel will bolt on from the old engine, but it only takes about 15 minutes to check.

Here are the options I've used to mount an engine with a 3/4" shaft onto an old Ariens:

1) Shaft sleeve with oversize key from ebay, about $23. Easy install Here's the one I purchased http://www.ebay.com/itm/331487972064

2) Find a pulley from a Craftsman or MTD with a 3/4" bore, I paid $20 for one on ebay.

3) Buy separate pulleys. This is the most flexible option. If you go with a larger pulley for the blower section it will throw dry snow further. It may cause the blower to bog down in wet snow however.

I'm told that the Predator engine shaft is a bit lower than the Tecumseh. That means smaller belts, unless you use a larger pulley. Put the two engines nose to nose and measure any difference. If the Predator is shorter double the difference in height and subtract that value from the standard belt length.

I put a Chonda 15HP on my big Snapper with different pulleys and it took me two tries to get the exact belt length. The 15HP Chonda blows a bit better than to old 10HP Tecumseh. The biggest difference is that it's quieter and uses less gas.
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post #10 of 14 Old 03-18-2015, 01:49 PM
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I just found the Owner's Manual for my old Briggs thanks to a chat session with a Briggs person. My old 8HP is rated for 12.7 Ft.-Lbs. of torque and the HF 8HP engine is rated for 12.9 Ft.-Lbs. So, if the figures are right my gut feeling is wrong.

Still, I'll be better off with the 8HP instead of the Predator 6.5 since it only puts out 8.1 Ft.-Lbs. Plus, the Briggs has electric start. I should mention that I only paid $50 for the Briggs.

Last edited by stanz; 03-18-2015 at 01:52 PM. Reason: more info
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