Author Topic: New member from Denmark  (Read 1938 times)

Offline Soren Hansen

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New member from Denmark
« on: January 31, 2016, 12:04:02 PM »
Hello All

Yet another newbee arriving

I'm the happy owner of a "new" second hand Myford ML7 from 1969, which is my first lathe.

I have been dabbling with a small danish lathe named "SR80" which have a hight over bed of 80 mm, no powerfeed and 4 locked speeds via belt/pulley.

My ML7 have no gearbox, but I'm steadily building up changewheels, but finding and fitting a 127 tooth wheel has my number 1 priority.

Greetings from Denmark

Soren
Keep fingerss from rotating parts

Offline seadog

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Re: New member from Denmark
« Reply #1 on: January 31, 2016, 12:14:48 PM »

Offline awemawson

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Re: New member from Denmark
« Reply #2 on: January 31, 2016, 01:08:30 PM »
Welcome Soren  :thumbup:

Good to have you come aboard - tell us a bit about yourself, your workshop and your projects - we like photos  :clap:


(640x480 is the best compromise resolution between visibility and too much data)
Andrew Mawson
East Sussex

Offline krv3000

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Re: New member from Denmark
« Reply #3 on: January 31, 2016, 02:22:15 PM »
hi and welcume

Offline Soren Hansen

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Re: New member from Denmark
« Reply #4 on: January 31, 2016, 02:44:00 PM »
Welcome Soren. There are 127t gears being advertised on eBay at the moment - http://www.ebay.co.uk/itm/127-TEETH-GEARS-FOR-MYFORD-LATHE-FOR-ML7-SUPER-7-ML10-/290924125927?hash=item43bc6ddee7:g:OT4AAOxy38tTmGLX

Graham

Thank you for the link, I allready have it on my watch list  :thumbup:
Keep fingerss from rotating parts

Offline John Rudd

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Re: New member from Denmark
« Reply #5 on: January 31, 2016, 02:50:58 PM »
Hi Soren,

You know the alternative to the 127 tooth wheel is 21....( 6:1 ratio as near as dammit...)
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Offline Soren Hansen

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Re: New member from Denmark
« Reply #6 on: January 31, 2016, 03:45:05 PM »
Hi John Ruud

I can't find the article right now, but have read if I use a 47/37 combo, I transform my leadscrew from a 8TPI to a 2,5mm pitch and the error is less than 0.015%, but then I have to buy the 47 and 37 gears.

Then again, if I was to use a 21 gear, my leadscrew would catapult the apron down the bed so fast it would need a airbag at both ends of it's travel, or do I misunderstand anything ?

Mind you I come from a total manual lathe like the one on this pic, but without the gearbox and changewheels
Keep fingerss from rotating parts

Online philf

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Re: New member from Denmark
« Reply #7 on: January 31, 2016, 04:21:30 PM »
Soren,

This chart shows the configuration to use 21t gear(s) for metric threading.







No airbags necessary!

Hope this helps.

Cheers.

Phil.
Phil Fern
Location: Marple, Cheshire