Union Jubilee Clutch.

[Retired]

Hi,

Many thanks for your interesting post Ted and yes please I would be delighted to receive a copy of the clutch drawing. I've just sent you a PM.

If possible and if not subjected to copyright perhaps you could include the drawing on this thread as it is highly relevant and all such information is to be encouraged.

I've bought through eBay a 9mm x 1.5mm die as I want to run this size thread onto the end of the counter-shaft; this is the size of the original thread so I'll stick with it. I'm awaiting delivery of the die but I'm also awaiting delivery of some decent weather.

If you have any additional information Ted regarding powering the clutch coil it would be most welcome because eventually I'll get around to this part of the project. My energizing coil is 12V and I've been kindly given a suitable transformer; I've been informed an extra Diode would be beneficial in protecting the coil but hopefully I'll gain more information at a later date and add the details to the thread.

Kind regards, Col.

[AlanBeckett]

Is that really 9mm and not 19 young Col?

Alan

[Retired]

Hi,

Yep; sure is 9mm Big Al; I'm not in the pit now so onto small Dinky toy stuff.

The counter-shaft is 7/8" overall diameter through the pillow blocks but is reduced twice (stepped) at the clutch end; the inner step to receive the outer clutch plate boss the outer step to accept the securing nut this nut being 9mm.

The 9mm die arrived at dinner time now all I need to arrive is some dry weather. A bit more welding is needed then hopefully everything will go together as planned; if successful I'll convert both Myford's to clutch activation as the job will be so much easier the second time round.

Kind regards, Col.

[AlanBeckett]

3/8" x 17tpi sounds very coarse. Are you sure you're not making it out of wood

Alan

[AlanBeckett]

Well, they do exist - http://www.tracytools.com/index.php?rout...ct/product&path=1_10&product_id=329
It looks as though Tracy have a real Website at long last

Alan

[Retired]

Hi,

Thanks Big Al; I cut the 9 mm thread on the counter-shaft end easily enough using the die.

Due to the usual bad weather; Christmas and the New Year work stopped on this project but today I was amazed that I could get into the workshop and garage in comfort; no wind; rain or frost in fact it has been mild but still a black hole.

I wanted to cut a key-way into the end of the counter-shaft but firstly I needed to make a jig for the lathe to hold the shaft securely in position on the cross slide. My initial intention was to simply pack the shaft and clamp it in position but as there are so many excellent tutorial videos on "You Tube" I thought I'd have a look for a bit of inspiration. Sure enough I found an excellent video so I can't take any credit whatsoever for the jig design as I merely copied. I like the thinking behind the jig as it takes out the messing around of aligning the shaft in relation to the end milling cutter; as the weather is due to return to dire tomorrow I wanted to get this job done today.

I have plenty of angle iron off-cuts so cut a length of 1"x1" and a length of 2"x2" and aligned them as shown in the video but I welded along the "V" taking care to quickly turn over and apply similar weld to the opposite side to balance distortion.

All sharp edges were fettled and after dinner I successfully cut the key-way; I thought I had done an excellent job until I picked up the matching clutch plate to find the original key still in position. During my rush to beat the weather I had cut the key-way to match the belt pulley; I had even measured the loose key at 6mm going to the trouble to drive over to Rufforth Auto Jumble last Saturday morning to buy the correct end milling cutter. I bought an expensive solid carbide cutter for the bargain price of £6 and was delighted at this.

I'm so used to handling motor shaft keys at 6mm and as it is usually freezing in the workshop I popped in to measure the key before buying the cutter. The width of the new key-way should have been 4mm. I thought for once I had beaten the weather but no the weather wins. Every time it turns mild I go mad trying to get jobs done.

I've now got the choice of either making another counter-shaft or making a stepped key. Perhaps I should stop trying to work when the weather is mild because most of my big projects thus far have been completed whilst I've been frozen; soaking wet or blown around by high wind; I wish I was kidding but I'm not.

All is not lost as I now have the key-way jig and the video is seen here:

http://www.youtube.com/watch?v=eVgZol6Mfvo

What's knitting like as a hobby?

Kind regards, Col.

           

[Radio Fixer]

Shame about the music with the commentary ... Why!

G

[Retired]

Hi,

I agree Gary; the background music in the video is a nuisance but at least the jig is the business. I've just been thinking about the design of this jig and believe with modification I could make a similar jig not only to cut straight parallel key-ways but if the mounting was designed to pivot with screw feed then woodruff key-ways could also be cut? I'm thankful that it's raining otherwise we would be short of water; it's been so dark I thought it was going to snow today.

Kind regards, Col.

[Joe]

Why indeed; at least it wasn't all through.

Handy gizmo, just a shame I've got neither welding gear nor angle iron.

- Joe

[Yorkie]

Interesting video Colin.

A neat way of getting the angle iron at just the right height to be central, by using a length of bar between the headstock and tailstock. Isn't it amazing how youtube has transformed our hobbies - there are so many useful video clips on such a diverse range of topics, all at a click of a mouse button. Not so many years ago all we'd have would be books and magazines, which are nothing like as instructive. How lucky we are!