Thread: A clutch for the Douglas Shaper

Would have gone much better if you'd said "oh I havent tried that" lol

I'd not seen a large shaper without a brake. But as I've only seen about 5 I guess that doesnt mean much and number 6 breaks the that rule.

Stuart

I might be able to fit one.....although there is not much room left in there for the plates. Remember the clutch and gearbox is not original, it was a overhead drive machine...mmmmm a shaper with a flat belt......Phil knows what i mean....

Originally Posted by morrisman

Cork clutches were commonly used in automobiles many years ago... but they ran in oil I think

Cork has some good properties for use as a clutch lining - high coefficient of friction, inherently shock-aborbing, can be used dry or wet (slight loss of CoE when oiled).
The drawback is that cork burns if overloaded, or if the clutch is slipped excessively.
My 1960 Panther M100 motorcycle has a cork lined multi-plate clutch. This bike has lugged a very heavy sidecar.

Jordan

I once had a BSA Bantam that had a cork lined clutch. The guy told me the cork was glued with Araldite, clamped and baked in the oven. Reckoned whatever temp it was cured at would be the temp it would withstand. Within limits presumably. The bike had numerous issues but the clutch wasn't one of them.

Originally Posted by nearnexus

Good one Phil.

Yes, videos are much more interesting than photos, and dead easy to do.

Nice job.

Cheers

Rob

Thanks Rob.
I agree with the videos, I took it with my phone and plugged it into the computer then uploaded it. I think I can do it straight off the phone but haven't investigated how yet. I also have a video camera that has a Youtube button, must try that one too. I must also try commentary like on Ueees' videos but having done some educational videos for work, I might not Hopefully they are well hidden enough so noone will find them

Originally Posted by Ueee

Hi Phil,
Good job on the new motor and clutch. I like the brake....the Queen can float around half a stroke after you disengage (depends on the gear and stroke length).....its a bit of a guessing game as to when to disengage to get the tool at the spot you want. And there is no cranking by hand to position it.....

If the cork fails then leather is also an option, though the only examples i have seen have been leather on timber in a cone clutch. The old Little giant power hammers had leather clutches i think.....

The 7v could be right depending on whether its a transformer or switchmode driver. You really need to put a load on it and then test again.

Hi Ewan,
the brake has turned out to be an added bonus. As you can see it stops pretty quick, very handy after trying to stop in the right place with the switch.
How would I go about 'putting a load' on the light outlet (and keep it clean ). I have the plug but there are no wires in it.

Phil

Originally Posted by nadroj

It doesn't have a clutch, but a jog switch instead.
Not tried it yet, but I'm hoping it has good control of the stop position. Also, will it work if converted to single phase?

The jog button would still work, but I'm not sure how long the motor would put up with it.
I guess you have a motor lined up already? If not and you really want a jog I'd be thinking pretty hard about a VSD on the motor you have(assuming you have the 3phase motor).
Clutch and brake is far better IMHO.

Stuart

Thanks Stuart,

Not having any experience of a jog switch, I'll be interested to see how it works.
I suppose it could be just an ordinary push on / release off action.

Jordan