Identifying belt type for these pulleys please

[NigeParticipant @nige81730]

My ML4 currently has a leather and steel link type belt on it but as i want to move the layshaft back a bit I will need a new belt. The first photo below shows the layshaft pulleys. They are about 1/2 inch wide at the outside edge and about 1/4 inch at the bottom.

The photo below is of the driven pulleys on the mandrel. They are very similar to the layshaft pulley with the dimensions being only very slightly smaller than those on the layshaft.

I would like to know what section vee belt I need please. I think it is called A section ? If anybody has recommendations for a suitable adjustable linked type belt that would be useful thank you.

[NigeParticipant @nige81730]

[HughEParticipant @hughe]

Nige,

Details for v belts can be found in Tubal Cain's ME Handbook section 13. The width at the top for A profile is given as 13.29mm.

Hope that helps.

Hugh

[NigeParticipant @nige81730]

Thanks Hugh. my measurement of 'about 1/2 inch' is probably quite close but I will check more closely tomorrow.

[John HaineParticipant @johnhaine32865]

Fenner Twist Link is good. I use it on my Super 7. You can get it from RS at a price but there may be other sources.

Aha! Lathes.co.uk stock it:

**LINK**

Actually I may have got mine from there. I use it both on my lathe and VM-B milling machine.

[MeunierParticipant @meunier]

Re Fenner Twist Link or similar, has anybody had any success using it for replacing Tri-Leva belts on ML7 ?> Thanks
DaveD

[RobboParticipant @robbo]

Probably 'A' section.

Have a look here – **LINK**

[NigeParticipant @nige81730]

John Haine: Thanks I will measure up and give Tony at lathes.co.uk a call tomorrow.

Robbo: Thanks 😀

Edited By Nige on 18/07/2017 22:19:10

[Nicholas FarrParticipant @nicholasfarr14254]

Hi Nige, some guidance on measuring pulleys can be found in this **LINK** and belt sizes can be found by using the R/H arrow.

Regards Nick.

[V8EngParticipant @v8eng]

Posted by Meunier on 18/07/2017 21:23:29:

Re Fenner Twist Link or similar, has anybody had any success using it for replacing Tri-Leva belts on ML7 ?> Thanks
DaveD

 

I do not think they would work on a Tri-Leva assembly, if I remember rightly you need a smooth outer surface on the back of each belt for the tensioning rollers to press against.

You could probably use a link belt on the drive from the motor to the idler (counter shaft?) pulley though.

Edited By V8Eng on 18/07/2017 23:09:16

[MeunierParticipant @meunier]

V8Eng, double-drat, yes now you mention it – of course. Ah well, was hoping to avoid taking it all apart. Thanks
DaveD

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