Myford Super 7 motor mounting

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Myford Super 7 motor mounting

This topic has 10 replies, 7 voices, and was last updated 19 March 2019 at 10:21 by Stephen Osborne.

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26 February 2019 at 09:53 #19251
Stephen Osborne
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@stephenosborne30223
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26 February 2019 at 09:53 #397990
Stephen Osborne
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@stephenosborne30223
My elderly Super 7 has had an intermittently noisy motor for some time. Recent investigation has located the noise to the resilient motor mounting. The rubber bushes inside the fixing clamps have become perished and degraded by oil contact.

Could any of you Myford experts suggest:

a) Where I could obtain replacement bushes, or

b) A modification to the mount to allow the continued use of the original motor.

I have a well equipped workshop including mig welder and enjoy a challenge!

Many thanks in advance
26 February 2019 at 10:09 #397993
V8Eng
Participant
@v8eng
I remember this company was suggested by somebody else in a recent thread on here.

Try here.

**LINK**

Edited By V8Eng on 26/02/2019 10:10:26

Edited By V8Eng on 26/02/2019 10:10:50
26 February 2019 at 10:13 #397994
Clive Brown 1
Participant
@clivebrown1
Years ago I repaired a pair of resilient motor mounts for a Myford lathe by moulding using Devcon Flexane. Lasted very well but it's expensive to buy a retail quantity.
26 February 2019 at 16:39 #398039
Howard Lewis
Participant
@howardlewis46836
There is probably an ideal Shore hardness for the rubbers to isolate a motor running on 50 Hz, (or for 60Hz in USA), to minimise noise transmission.

I replaced the failed moulded rubber on one end of a single phase motor with a strip cut from a commercial vehicle inner tube, with no apparent problems. Beginner's luck probably, But where needs must, and all that!

Howard
26 February 2019 at 16:54 #398042
john fletcher 1
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@johnfletcher1
I had a similar problem some years ago and went to a Motor Factors ( car parts/bits) and they had some thing very close to what I took along as a pattern, but was fitted some where on a motor car. With a bit a wriggling and fettling it fitted OK ,that was at least 10 years ago and is still going strong. John
26 February 2019 at 17:00 #398044
roy entwistle
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@royentwistle24699
John

Probably a grommet used to hold exhaust parts

Roy
26 February 2019 at 23:28 #398080
Don Cox
Participant
@doncox80133
Four of these?

https://www.ebay.co.uk/itm/Classic-Car-Exhaust-Rubber-Mounting-Bobbin-Cotton-Reel-MG-Mini-etc-GEX7251/192810543186?hash=item2ce4676852:g:Q40AAOSwEUdcUxst:rk:4f:0
27 February 2019 at 09:58 #398101
Stephen Osborne
Participant
@stephenosborne30223
Gentlemen

Thank you all for your most helpful suggestions. If and when I manage to effect a repair, I will post details.

Many thanks, Steve
28 February 2019 at 16:35 #398256
Howard Lewis
Participant
@howardlewis46836
For anyone thinking of using rubber mounts, the rubber, ideally, should be in shear. In tension, failure is likely to follow. Exhaust mounting "rings" are usually oversized, to minimise the tensile stress, but they do fail.

Engine mounts, in shear, fail much less frequently, if at all, as long as they free of oil.

Howard
19 March 2019 at 10:21 #401178
Stephen Osborne
Participant
@stephenosborne30223
Problem solved.

Many thanks to V8Eng for putting me in touch with Remco. Very helpful in suggesting modifying one of their stock rubber resilient mounts.

My CP motor has 9 sided caps that fit into the rubber mount, Remco could only supply a 6 sided mount. However, there was enough thickness of rubber on this mount to allow cutting out a 9 sided hole with the use of a Stanley knife.

Result – super quiet motor. Many thanks to all.
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