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Pulley wanted for alternator

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Jordan:
I need a B section, 2 groove pulley in cast iron or steel.
The PCD is 7 inches, or about 7 1/2 inches overall diameter.

It's to mate with my 6/1 engine that has a 16 1/2" overall diameter.

I'm in Australia.

Jordan

38ac:
I purchase items like that on EBay. There is always old stock or used to fit my needs at deep discounts from going to a supplier.

mikenash:

--- Quote from: Jordan on June 17, 2019, 05:12:12 AM ---I need a B section, 2 groove pulley in cast iron or steel.
The PCD is 7 inches, or about 7 1/2 inches overall diameter.

It's to mate with my 6/1 engine that has a 16 1/2" overall diameter.

I'm in Australia.

Jordan

--- End quote ---

mikenash:

--- Quote from: Jordan on June 17, 2019, 05:12:12 AM ---I need a B section, 2 groove pulley in cast iron or steel.
The PCD is 7 inches, or about 7 1/2 inches overall diameter.

It's to mate with my 6/1 engine that has a 16 1/2" overall diameter.

I'm in Australia.

Jordan

--- End quote ---


G'day Jordan

You didn't mention the shaft (presumably of your alternator head?).  Does it have a keyway?

Do you know what a "taperlock" is?

My thought would be you might be best to buy a pulley that has (or is ready for) a taperlock centre.  Then you just need to find or have machined, the centre to suit your shaft

If you have a google you'll see what I mean.  They're a "system".  IMHO it would pay to understand that before going shopping?

Excuse me if I'm telling you something you already know.  Cheers

Jordan:
I can buy a new pulley at sobering expense.
There's just too many variations to expect to find as a used or surplus part, exactly the one needed for a particular job, unless one is very lucky. ...especially in a small market like Australia. - diameter,, belt section, bore, number of grooves, material.
But I thought I'd give it a shot and ask here.
I have a box of various sized pulleys, and suppose others may do also, perhaps under a bench at the back of the shed. :)
The shaft on the alternator is 1 3/8", or 35mm - so close I think either would be OK.
Looks like Taper-loc (and similiar) are pretty well standard these days. These seem expensive too, even though they must be produced in huge numbers.
I can understand why they are popular. My alternator's old pulley (wrong diameter) was steel, 4 groove and with a long key - and very tight. It did not want to budge, until I brought in heavy weaponry - a custom puller made from inch thick steel plate, with an hydraulic pump and ram, and a blowtorch.
I'd be happy with a plain pulley, even if the shaft hole is too small as I can bore it out.
Come to think, if it's too big, I could bush it smaller.

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