[modeleng] Re: Myford belt pulleys

The polyvee will run on any material, aluminium being widely used for 
industrial / domestic purposes.

If you want to stick with cast iron, I believe college engineering do larger 
sizes and there was another supplier at Sandown (dont remember the name) 
who had some off cuts of biggish CI.

Alan
----- Original Message ----- 
From: "David Everett" <deverett2003@xxxxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Thursday, September 29, 2005 4:35 AM
Subject: [modeleng] Myford belt pulleys


Hi all


The life of the main Vee belt on my Myford S7 is coming to an end.  I intend 
to replace it with a
Polyvee belt, which of course means making new pulleys.  There was a design 
a few years ago in ME
by Neil Hemmingway for the conversion that I will use.

Questions:

Should the new pulley be from Cast Iron or will mild steel be OK?

If Cast Iron is to be preferred, will 'any old' cast iron do or must it be 
Meehanite (continuously
cast)?

Can anyone suggest a UK supplier of the recommended material from Q1 
(125mm/5" dia x approx
150mm/6").  A local supplier can only get Meehanite up to 100mm dia.

Many thanks in anticipation


Dave
Saudi-Arabia-On-Sea





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