Sandown Exhibition

Sandown Exhibition

This topic has 7 replies, 5 voices, and was last updated 24 January 2011 at 11:01 by David Clark 13.

Viewing 8 posts - 1 through 8 (of 8 total)

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22 January 2011 at 10:56 #5370
A Smith
Participant
@asmith78105
Myford Imperial/Metric changeover system
Advert

22 January 2011 at 10:56 #62958
A Smith
Participant
@asmith78105
At the Sandown Exhibition, someone (possibly a SMEE member)was demonstrating a Myford with an extra banjo in the changewheel train. This allowed easy changeover between metric and imperial by operating a simple dog clutch. The banjo casting and an extended changewheel cover are available from this Gent. Does anyone have a contact address? I seem to lost the note that I made at the time.

Really enjoyed the show, by the way.

Regards.

Edited By A Smith on 22/01/2011 10:57:24
22 January 2011 at 12:55 #62963
John Stevenson 1
Participant
@johnstevenson1
The gent in question is D.A.G. Brown, a member of SMEE, sorry no contact address for him.

You can also achieve the same thing a lot easier by just swapping the input driver for the standard 24 tooth to either a 33 or 34 tooth and use the normal gearbox ratios.

There is a slight error this way but not enough to affect anything but leadscrews and NASA related threads. These same tow gears will also do BA threads down to 6BA.

There is often someone on Ebay selling these two gears together with a laminated chart showing the gearbox ratio to select.

For most uses this is a better way than the Myford way of buying a new banjo and gears for metric as you do not have to swap everything over and you still have access to the power feed.

John S.
23 January 2011 at 00:13 #62993
A Smith
Participant
@asmith78105
Thanks for the info and for the alternative suggestion, I’ll look into that.

Regards,
23 January 2011 at 12:01 #63009
DMB
Participant
@dmb
John Stevenson,

I am also interested in finding items referred to on ebay, have tried, no luck. Can you please suggest search word(s)?

Thanks,

John C.
23 January 2011 at 18:53 #63023
KWIL
Participant
@kwil
A Smith, read your PM.
24 January 2011 at 10:56 #63047
DMB
Participant
@dmb
Hi John S.,

John, Thanks for info – v. useful + would never have found it without help.

John C.

Edited By David Clark 1 on 24/01/2011 11:02:58
24 January 2011 at 11:01 #63048
David Clark 13
Participant
@davidclark13
Hi There

Search for user

marypoppinsbag

on ebay for metric gear details.

I think they also do useful dividing plates and back issues of ME and MEW.

regards David
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