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'Living with an old Synchro' and other tales from my shed.

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DavidA:
Woe, woe and thrice woe.

Just as I am getting the hang of this machine I noticed that the lead screw has around half a mm endfloat.

So now I will have to get into the gear box to take it up.

Oh yes, and while I was looking at the ancillary tools that came with it I fount that the face plate doesn't have any cam - loc pins (or retaining screws) in it.

Spoiled my whole day; that one.

Dave.

awemawson:
.... and the pictures ...... :scratch: :scratch: :scratch: :scratch:


 :worthless:


Now if it's a drive shaft does one end not need to be left hand threaded ?

DMIOM:

--- Quote from: DavidA on January 21, 2016, 02:35:03 PM ---......Oh yes, and while I was looking at the ancillary tools that came with it I fount that the face plate doesn't have any cam - loc pins (or retaining screws) in it. ......
--- End quote ---

Dave,

Just in case you don't know, be careful when getting new pins - whilst the visible part is standardised, the threaded portion isn't - so the pins may have metric or imperial threads; and on another forum, I seem to recall John Stevenson saying at one time he had five different pin fittings!

Dave (IOM)

Jonny:
[quote
Now if it's a drive shaft does one end not need to be left hand threaded ?
[/quote]

Kick a man when he is down  :lol:

Lead screw play wont affect accuracy going in one direction only, some are free to move.

Commiserations on having to faff about with change wheels.

Quite dear them cam lock studs, have bought Chinese D1-4 complete backing plates for less than the studs alone, worth considering.

DavidA:
Andrew,

Pictures are coming......eventually.

The drive shaft was machined to the customers (my nephew) design.  There were a number of things that were wrong with it, and I pointed them all out to him. But he said it would be ok. So be it.

Jonny,

Yes, the lead screw will work as it is. But I don't like the idea of the shaft moving around like that. Needs fixing.

However, it will have to cut a few more threads as it is.

The only change wheels I have to contend with is the set that changes Imperial to Metric. And on the 280 Synchro you simply change the complete banjo unit. Quite easy once the thing is set up.  The gearbox then takes care of all the available pitches.

There are 72 Metric threads and 48 Imperial threads available. Who could ask for more ?

Dave,

Thanks for reminding me about the studs.

Dave.

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