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 pulley material

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N1ck
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PostSubject: pulley material   Wed Mar 04, 2015 10:04 pm

I was wondering why there are different materials like aluminum, cast iron, steel and others. thanks
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Doc Sprocket
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PostSubject: Re: pulley material   Thu Mar 05, 2015 6:35 am

Application, really. The cast zinc and cast aluminum pulleys are light duty. They are rated for FHP (Fractional HorsePower) applications and are not intended nor recommended for uses where they are driven by 1hp and up. When I see guys use them on mowers, I cringe a little. Some folks get lucky, but for the most part, it is a failure waiting to happen.

Steel and cast iron are for heavier duty applications, like ours.

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MatthewD
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PostSubject: Re: pulley material   Thu Mar 05, 2015 10:22 am

@Doc Sprocket wrote:
Application, really. The cast zinc and cast aluminum pulleys are light duty. They are rated for FHP (Fractional HorsePower) applications and are not intended nor recommended for uses where they are driven by 1hp and up. When I see guys use them on mowers, I cringe a little. Some folks get lucky, but for the most part, it is a failure waiting to happen.

Steel and cast iron are for heavier duty applications, like ours.
I ran a 4 inch aluminium pulley on a mower for years and nothing ever happened. I don't think it was cast aluminium though
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TheRainbowBoxer
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PostSubject: Re: pulley material   Thu Mar 05, 2015 1:55 pm

When you wear out a cast aluminum or zinc pulley, it will take your belt with it... Trust me. I'm speaking from experience. I've destroyed a stamped steel pulley too (took over 10 years), though, so maybe it is a "me" thing...

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Moose
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PostSubject: Re: pulley material   Thu Mar 05, 2015 6:21 pm

I would have to say the ultimate pulley would be brass >.> or bronze nice and heavy like cast iron but strong like steel. Could run at a higher rpm than cast iron the pulley on the massey is rated for something around 3200 rpm. Stamped steel is pretty nice but I think itd be prone to separating at the welds after time. Haven't seen a turned steel pulley in a while...
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crafsmankiller
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PostSubject: Re: pulley material   Thu Mar 05, 2015 6:34 pm

Im using the pulleys off my deck, i think their steel. So far no problems except slippage when wet
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Murray modder
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PostSubject: Re: pulley material   Thu Mar 05, 2015 8:43 pm

With cast Aluminum pullies, or at least the few I've *tried* to run, the edges (on the tips of the V groove) Tend to come apart after a few hours on them. Those edges are almost like serrated blades to that belt.
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Doc Sprocket
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PostSubject: Re: pulley material   Fri Mar 06, 2015 6:24 am

@MatthewD wrote:
@Doc Sprocket wrote:
Application, really. The cast zinc and cast aluminum pulleys are light duty. They are rated for FHP (Fractional HorsePower) applications and are not intended nor recommended for uses where they are driven by 1hp and up. When I see guys use them on mowers, I cringe a little. Some folks get lucky, but for the most part, it is a failure waiting to happen.

Steel and cast iron are for heavier duty applications, like ours.
I ran a 4 inch aluminium pulley on a mower for years and nothing ever happened. I don't think it was cast aluminium though

Well- I DID say:
@Doc Sprocket wrote:
Some folks get lucky,

_______________________________________________
***Get YOUR official "Doc Locked, And Ready To Rock!" Stickers by clicking here!***
***Official Sprocket's Garage vinyl graphics and tees for sale HERE!***

Put down the wrench, and come out with your hands up!-Doc "Tranny Crusher" Sprocket, ATLTF Forum Admin, Thinkerer and Tinkerer, and all-around good dood. Wink

Gen. Mayhem- http://www.atltf.com/t2597-general-mayhem-race-tractor
MULE- http://www.atltf.com/t2153-lawn-boy-utltv
MULEII- http://www.atltf.com/t3328-1970-john-deere-112-the-beginnings-of-mule-ii
MULEIII http://www.atltf.com/t4263-mule3-brainstorming-ideas-etc#58287
Wrench, Wheel, Wreck, Repeat...
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TheRainbowBoxer
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PostSubject: Re: pulley material   Fri Mar 06, 2015 8:19 am

@Moose- Glen's has turned steel pulleys fyi

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Haspin 2016 was a blast!  Check out pics and vids here
Haspin 2016 Media thread

Join us for the annual Mowron-fest at Haspin Acres!
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