Thread: Variable speed problem

Check the grub screw on the bottom pulley.
I had one like that and the grub screw didn't hold very well, due to pressure from the spring.
I'm not sure but I may have drilled or ground a small recess on the shaft for the grub screw to seat into.

Hope that helps.

Steve

I remember when I was over and we looked at it. We did as you were doing in the video.

The next day you said to me that you "pulled" the handle to the right, something popped and it magically started working.

I'd wager from the video that the bottom spring isn't pulling the lower pulleys together. Clean it out. Compressed air and Wd for sure.

Originally Posted by Acco

Looks to me that the bottom drive reeve set isn't closing.

I agree.

Thanks all for the replies, From what i see there is no method for the lower pulley attached directly to the motor to be moved, theres no mechanism for it to move or be moved by a lever, its set statically on the shaft.

The top pulley doesnt seem to be particularly hard to move, i will check the spring to check if the tension is correct. Also i cleaned the shaft and all around inside the head stock wherever i could get into yesterday but that didnt change anything. I may need to spray more WD-40 in there to see if it frees up more movement or somethign.

Thats right Ev i did, Something occured one night where it just popped back into position and started applying the correct tension on the belt and started spinning a the correct speed. The lathe isnt at my house anymore so its a bit harder to get to it all the time. The lathe was working perfectly at my place, we move it from my house and once i sat it down in the new place i started it up and it was running at full speed but as soon as i changed the speed to a slower one it wound off and stopped spinning.

ill investigate the grub screw also, is that near the pulley on the shaft or elsewhere?

this is exactly what happens with mine

http://lumberjocks.com/topics/<wbr>55600

i just need to clean it right out and re-lube. if i cant i may have to
take the spring off the top pulley. It seems other people have issues
with the spring flying off due to circlip but mine is a end cap that
is threaded on. hmmm

The Reeves drive should look something like the one below. The spring is the only thing that pushes the moving half of the pulley. The moving half should slide on a boss that is attached to the other half. This should slide freely back and forward, but under spring pressure. There should also be a key between the boss and the moving half of the pulley, which makes both halves share the load and rotate together. The only grubscrew that should be there is one that would hold the whole assembly on to the motor shaft.

Reeves.JPG

Sorted! The new owner cleaned out as much dust as she could see and gave it a good oiling with wd40 now it moves like it should. Thanks all that replied.

Originally Posted by delbs

Sorted! The new owner cleaned out as much dust as she could see and gave it a good oiling with wd40 now it moves like it should.

That would be me . Not bad for an old girl.

Jane

Great work Jane top notch effort!

Originally Posted by lovetoride

That would be me . Not bad for an old girl.

Jane

Good to see you got it sorted, and welcome to the forum. I assume we are going to see some of your future works.

Thank you, sir. Very "future".

It was team work that got the job done.


Sent from my iPad using Tapatalk

Glad you got it sorted - saved me posting links to all the threads on here which I found by searching for
"MC900 pulley" and/or "MC1100 pulley"

eg:
https://www.woodworkforums.com/180883...s-pulley-type/
and
https://www.woodworkforums.com/14400-...fort-required/

Two things: keep the Reeves pulleys clean and lubricated, and be aware that they aren't the strongest pulleys in the world, so be careful about levering on them if you are removing or replacing them. There have been a few painful stories about them shattering under seemingly not very much effort

Cheers,
Andrew

Originally Posted by lovetoride

That would be me . Not bad for an old girl.

Jane

Keep in mind that WD-40 is not a lubricant, it is mostly stoddards solvent, otherwise known as paint thinner. A spray silicone lube would serve best, but light oil - sewing machine, 3 in 1, 5 - 20 synthetic motor oil, auto transmission fluid, will lubricate. The silicone lube will not hold as much wood dust as oil.

Welcome to the happy insanity of wood turning.

Im pretty sure I saw a can of silicone lube sitting there l. We just tried wd40 to begin with. thanks for the heads up though Paul