V Belt Conversion

V Belt Conversion

This topic has 8 replies, 6 voices, and was last updated 20 November 2017 at 17:48 by ken frewin.

Viewing 9 posts - 1 through 9 (of 9 total)

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18 November 2017 at 18:06 #327798
ken frewin
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@kenfrewin10473
Hi, Has anybody done the Hemingway poly belt conversion on a super7 thinking of having a go, any thoughts or success would be appreciated.Regards Ken.
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18 November 2017 at 18:06 #25636
ken frewin
Participant
@kenfrewin10473
18 November 2017 at 18:08 #327800
Neil Wyatt
Moderator
@neilwyatt
There was a write up in MEW 215 by Alec Payne (for an ML7).

Neil
18 November 2017 at 18:24 #327801
NJH
Participant
@njh
Ken

Not done that one but now use link belt which I find works very well and is easy to fit and change.

Norman
18 November 2017 at 18:29 #327802
oldvelo
Participant
@oldvelo
Hi Ken

Go for it a poly vee belt conversion is far superior to vee belts just look under the bonnet of any modern motor car.

One disadvantage is that the alignment of shafts and pulleys has to be spot on. No problem it engineering we do isn't it.

Converted my workshop drives to poly vee belts and no regrets on the Eight conversions so far.

The will drive at much slower speeds and bigger ratios.

Eric
18 November 2017 at 19:38 #327813
Robbo
Participant
@robbo
Posted by Neil Wyatt on 18/11/2017 18:08:41:

There was a write up in MEW 215 by Alec Payne (for an ML7).

Neil

Sorry Neil, the article was about a Super 7.
18 November 2017 at 21:28 #327843
Neil Wyatt
Moderator
@neilwyatt
Posted by Robbo on 18/11/2017 19:38:46:

Posted by Neil Wyatt on 18/11/2017 18:08:41:

There was a write up in MEW 215 by Alec Payne (for an ML7).

Neil

Sorry Neil, the article was about a Super 7.

That's down to me relying on my database of articles not the proper index…
18 November 2017 at 21:45 #327848
John Olsen
Participant
@johnolsen79199
Well, I have done a poly V conversion to my ML7, and just to make a proper job of it I put in four pulleys on each shaft instead of three. They don't squeak like the old V belt did, and give me a wider range of ratios. They also require less tension than the V belt did, which has to be a good thing with the spindle being on white metal bearings. I have the Newton Tesla drive on this lathe too.

I also converted my Unimat three to have a toothed belt drive that fits inside the original cover. I submitted that as an article but some previous editor discarded that and a few others.

Next thing I should do is replace the motor to counttershaft belt on the Myford with a poly V

John
20 November 2017 at 17:48 #328120
ken frewin
Participant
@kenfrewin10473
Thanks to everybody who replied, I have read the previous articles on the same subject, and I think it will be a go as soon as I get the time. Kind Regards Ken.
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