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Tool Talk Discussion Forum

Motor pulley

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Phillip Tibbetts

06-29-2020 03:54:25




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I am making up a portable air compressor that is gas engine powered. The compressor head has a flat pulley with 6 grooves that take a belt about 1/2 inch wide. I need a pulley that type for the gas engine about 2 1/2 to 3 1/2 inches in diameter. I've checked everywhere and cannot find out what the proper terminology for this type pulley is. I know they are used frequently on air factory compressors. Any help will be appreciated. Thank you in advance

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John Deere D

07-04-2020 06:53:39




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 Re: Motor pulley in reply to Phillip Tibbetts, 06-29-2020 03:54:25  
Are you familiar with,"Browning (TB) Taper Bore Bushing".........?

I've assembled,replaced,installed many............best invention since sliced bread.......

Bob..



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David G

07-03-2020 16:48:41




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 Re: Motor pulley in reply to Phillip Tibbetts, 06-29-2020 03:54:25  
Don't forget to put a new pressure relief valve on it.



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buickanddeere

07-01-2020 07:53:19




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 Re: Motor pulley in reply to Phillip Tibbetts, 06-29-2020 03:54:25  
What would a new factory built air compressor with warranty , safety shields/relief , proper controls and off the shelf parts cost ? Vs patching some odds and ends together ? https://www.homedepot.com/p/Campbell-Hausfeld-20-Gal-Horizontal-Gas-Single-Stage-10-2-CFM-GX160-Honda-Portable-Air-Compressor-VT6171/300776137



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Phil Tibbetts

07-02-2020 13:52:22




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 Re: Motor pulley in reply to buickanddeere, 07-01-2020 07:53:19  
About 1/5 the cost of that one.



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Tramway Guy

06-30-2020 05:15:07




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 Re: Motor pulley in reply to Phillip Tibbetts, 06-29-2020 03:54:25  
Does the compressor have an ‘unloader valve’? Electric compressors don’t usually have one. Unloader valve lets the engine keep running when the tank is full.



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Phil Tibbetts

06-30-2020 05:27:21




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 Re: Motor pulley in reply to Tramway Guy, 06-30-2020 05:15:07  
It will have,I am building it. Have all the required parts now.



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Phil Tibbetts

06-30-2020 04:40:16




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 Re: Motor pulley in reply to Phillip Tibbetts, 06-29-2020 03:54:25  
Thanks to all for the replies and info. I am going to bore out the 5/8 one my brother-in-law gave me.It came off a junked electric motor powered compressor.



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old_bc

06-29-2020 21:36:32




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 Re: Motor pulley in reply to Phillip Tibbetts, 06-29-2020 03:54:25  
Is this what you are looking for?

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Russ from MN

06-30-2020 05:19:14




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 Re: Motor pulley in reply to old_bc, 06-29-2020 21:36:32  
They sure are proud of those pulleys!



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Phillip Tibbetts

06-29-2020 20:36:00




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 Re: Motor pulley in reply to Phillip Tibbetts, 06-29-2020 03:54:25  
Well my brother-in-law gave me a correct pulley 5/8 bore, but I need to rebore it and cut a new keyway for 3/4 shaft.



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Stephen Newell

06-30-2020 05:51:38




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 Re: Motor pulley in reply to Phillip Tibbetts, 06-29-2020 20:36:00  
I started to offer one but mine is 5/8" also.



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CenTex Farmall

06-29-2020 19:58:00




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 Re: Motor pulley in reply to Phillip Tibbetts, 06-29-2020 03:54:25  
Try "Poly-V" pulley or sheave in your searches.

I used to have an old Speed-Air compressor that used a belt like that. It's still going, I gave it to my Dad.



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Duner Wi

06-29-2020 19:47:44




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 Re: Motor pulley in reply to Phillip Tibbetts, 06-29-2020 03:54:25  
Phillip, take a look at this

http://www.industrialbearings.com.au/uploads/catalogs/naismithvbeltsvpulleys_1327992533.pdf

My 2 compressors use J belts.



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DoubleO7

06-29-2020 07:31:20




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 Re: Motor pulley in reply to Phillip Tibbetts, 06-29-2020 03:54:25  
P.S.

If the compressor takes six belts to transfer enough power to run it, how much horsepower is the engine?



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Phil Tibbetts

06-29-2020 20:24:07




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 Re: Motor pulley in reply to DoubleO7, 06-29-2020 07:31:20  
Belt is about 9/16 wide and pulley has 6 small v-grooves the belt matches. I can find the belt but no pulley. I need a 3/4 bore about 2 1/2 to 3 inches OD.



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DoubleO7

06-29-2020 07:19:43




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 Re: Motor pulley in reply to Phillip Tibbetts, 06-29-2020 03:54:25  
I am thinking your compressor has a multi belt pulley and the spokes are fan blades to push ait over the compressor fins.

The "flat pulley" is just extra rim width to accommodate the end shape of the blades.

Probly takes "A" or"B" belts.

If the belt spacing is too much for one engine pulley, you can like stack several individual pulleys on the drive shaft.

Mount both engine and compressor on a common base with bolt slots and a pair of push bolts to push engine base.

To adjust belt tension.

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Centerplate

06-29-2020 07:16:55




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 Re: Motor pulley in reply to Phillip Tibbetts, 06-29-2020 03:54:25  
Quoting Removed, click Modern View to see

6 sheave



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gajack

06-29-2020 06:15:44




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 Re: Motor pulley in reply to Phillip Tibbetts, 06-29-2020 03:54:25  
Sir, might I suggest McMaster-Carr catalog.
Might be able to adapt an idler pulley from an
auto engine. good luck, jac



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Guido

06-29-2020 06:15:13




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 Re: Motor pulley in reply to Phillip Tibbetts, 06-29-2020 03:54:25  
Hello Phillip Tibbetts,

As Steve mentioned, I would look for available belts after you find the pulley. But even before you look for the belt, I would also install a belt tensioner. Takes a lot of power to turn the compressor, especially at the higher end of the set pressure,. This will also help keeping the belt from slopping, and it may not need further tensioning adjustments,

Guido.



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Russ from MN

06-29-2020 06:08:07




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 Re: Motor pulley in reply to Phillip Tibbetts, 06-29-2020 03:54:25  
Wow, after seeing the price of the micro-groove belts I think I would see about getting a v-belt groove machined in the compressor pulley. It wouldn't need to be full depth with that much circumference.



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Steve@Advance

06-29-2020 05:37:23




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 Re: Motor pulley in reply to Phillip Tibbetts, 06-29-2020 03:54:25  
I think those are called "micro rib" belts.

I hope that works for you with the gas engine. They are prone to throw with an electric motor, not sure how it will work with the gas engine.

The selection is limited, might want to find the available length belt before mounting everything.

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Mark-Mi

06-29-2020 05:17:12




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 Re: Motor pulley in reply to Phillip Tibbetts, 06-29-2020 03:54:25  
serpentine belt



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