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

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Pete.:
Belt is fine, and no the lever doesn't knock in neutral.
I'm pretty sure it'll be a plastic gear loose on it's steel hub.

DavidA:
Just discovered a fatal flaw in my Synchro purchase

It is missing a 48 tooth stud gear for the Metric set up.

Before I go to the Denford site, does anyone here have such a gear they are willing to sell ?

I need to cut some 2mm pitch threads. But can't do so without this gear.

As mentioned above, it is an Imperial machine. And the Metric conversion needs half a dozen different stud gears to cover most of the range. I have five.

The Synchro is different to many lathes in that to change to Metric you change the banjo. which has two wheel permanently fitted.   And the Imperial/Metric pair that is usually 127/100 is 127/120.
A 48 tooth gear drives the 127 part of the conversion gear from the stud gear, and is permanently fixed to the banjo.

So, to get the whole range of Metric pitches you only change the stud gear.

Dave.

Dave.

Pete.:
Any Idea what the DP is? I reckon it's about 24.

I just checked the tooth count of the stock one on my metric machine and it's a 42 tooth gear.

Jonny:
Can this be adapted http://www.ebay.co.uk/itm/Y60704-Diff-Gear-48T-For-Yama-buggy-spare-parts-/222090993043?hash=item33b5a79d93:g:e14AAOSwwpdW7YYK

DavidA:
Jonny,

I'd have to see one to make a decision on that. Price looks good though.

Pete,

Yes,

It's 2.77" diameter and 48 teeth which gives a DP of 18.

DP=outside diameter/number of teeth + 2

So I can expand my search to anyone having a DP 18 x 48 tooth gear.

Dave.

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