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  1. Quote Originally Posted by John S View Post
    So basically if you only ran 1 and 4 you would have the whole range ?

    What about doing just a two speed pulley using a 6 rib Poly vee belt drive and that way you could get the smaller pulley on the intermediate shaft a tad smaller without loosing wrap round as Poly vees' don't suffer from this like V belts and you could probably get to less than 100 rpm.
    Yes, that would do it. The front pulley on these machines fits on a large taper so I'd have to make the poly V pulley...

    I started thinking seriously about this conversion after I discovered that the original motor step-pulley was the wrong type ('A' section not 'B') I wanted to replace the belts with Fenner's (since they're supposed to be better) and did not want to run them on the wrong pulley. 'B' section step pulley aren't available of the shelf, so I was facing either making one or trying this; I'm glad I chose the later 'cos this works nicely :)

  2. Just thought I'd share this with you...

    My nephew Lee has a bad habit of asking me to make him things out of stupid sized bits of metal; a couple of weeks ago he asked me to make him a 35mm diameter steel sleeve with a 25mm bore and then supplied a length of 50mm bar - I couldn't find any 40mm bar locally, so had to spend hours turning the bloody thing down.

    Saturday, he dropped off a 'technical' drawing - anyone who has seen the The film "The Hudsucker Proxy" would have recognised the drawing straight away i.e. two roughly concentric circles with 120 written in the middle and 12 by the edge with a side note saying 100mm long.

    With it came a 4" long by 6" diameter block of steel - I'm suppose to make it into a tube
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    Last edited by BillTodd; 04-11-2009 at 12:14 AM.

  3. I wasn't happy about mounting the rough outside of the block in the lathe, so I finished the bore on the RF30 drill/mill

    After a very noisy interrupted cut, the boring job when quite smoothly.

    Last act was to turn the outside to size on the lathe
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    Last edited by BillTodd; 04-11-2009 at 12:14 AM.

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