Seat Diaghragms

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mermar74
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Seat Diaghragms

Post by mermar74 » Wed Nov 07, 2018 7:32 am

I purchased Triumph TR6 seat diaphragms (from the UK) to install onto my Coupe seats as I found these to be close in size to the originals. I installed these onto the frames (after drilling new hook holes) and left them at that for a while awaiting the new seat covers to be made and fitted.
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I had a looked at these the other day and this is what I found much to my annoyance;
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These have not yet have covers fitted and never have been sat on. It is obvious the wrong composition of rubber was used during manufacture.

I made contact with the company I purchased these from; they apologised and told me they have not come across this before and refunded my money with no problems.

I have since found there is at least one another manufacturer making these diaphragms, and I will now be purchasing these.

The difference I have noted is the faulty type has hooks moulded into the rubber the others don’t. So beware!

Victor Pace



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Post by toolmanchris » Wed Nov 07, 2018 8:25 am

Was just wondering Victor if they have been stored in direct sunlight? Could it be that if they were covered up once fitted it would have prevented this happening?
Glad to hear you got your money back though :D


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Post by mermar74 » Wed Nov 07, 2018 8:40 am

These were stored in ideal conditions in a storeroom, covered in bedsheets and away from direct sunlight.



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Post by toolmanchris » Wed Nov 07, 2018 8:42 am

Definately not up to scratch then Victor :D


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Post by scimjim » Wed Nov 07, 2018 8:54 am

that's appalling - I'll check the ones I bought a few years ago.


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Post by gtcse8 » Wed Nov 07, 2018 9:06 am

The OE manufacturers were VITAFOAM in Manchester.

I tracked them down a few years ago and they still had the moulds BUT they wanted a set up charge AND a minimum order of around a Thousand to remanufacture them.

Victor are there any manufacturers details on the other side of the webbing?.
Then we all at least will know what Not to buy.

Mark


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Post by upstart8s » Wed Nov 07, 2018 10:56 am

Mark, any idea what the current costs would be ? I know it's like asking how long is a piece of string, but with the age and usage of our cars, they are all likely to need them sooner or later. I have not yet checked mine, but I do use a seat cushion anyway. (please don't imagine for one minute that I am offering to stump-up, but I have heard of a thing called 'crowd funding').

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Post by gordonmc » Wed Nov 07, 2018 11:10 am

I found an MGB diaphragm which fitted the frame of my SE6a quite well.
Drilling of additional holes in the frame was needed and the clips were replaced. If I remember correctly they came as a kit with the rubber.
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Post by gtcse8 » Wed Nov 07, 2018 12:31 pm

gordonmc wrote:
Wed Nov 07, 2018 11:10 am
found an MGB diaphragm which fitted the frame of my SE6a quite well.
Gordon is there any manufacturers details embossed into it?.
upstart8s wrote:
Wed Nov 07, 2018 10:56 am
any idea what the current costs would be
Stu
Will have a look and see if I still have the contact details


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Post by gordonmc » Wed Nov 07, 2018 3:05 pm

Mark wrote: Gordon is there any manufacturers details embossed into it?.
Pretty sure not but I should have the invoice at home. Will check.



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Post by gordonmc » Wed Nov 07, 2018 3:14 pm

Found the invoice in my paper pile.
Bought from ANG as an un-branded item, but it has the manufacturer's part number AHA7878.
Bought from the ANG Ebay shop.



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Post by Terry H » Wed Nov 07, 2018 3:20 pm

Early and late diaphragms are available from the MGOC spares shop £14.75 for the early ones and £18.95 for the later ones. Apparently they went to the rubber webbing after 1972.
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Post by Terry H » Wed Nov 07, 2018 3:22 pm

Or there's these from MGBHive https://www.ebay.co.uk/itm/BRAND-NEW-MG ... :rk:1:pf:0
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Post by mermar74 » Wed Nov 07, 2018 7:59 pm

gtcse8 wrote:
Wed Nov 07, 2018 9:06 am
The OE manufacturers were VITAFOAM in Manchester.

I tracked them down a few years ago and they still had the moulds BUT they wanted a set up charge AND a minimum order of around a Thousand to remanufacture them.

Victor are there any manufacturers details on the other side of the webbing?.
Then we all at least will know what Not to buy.

Mark

Mark,

There are no markings at all, not even a part number. I have to admit though all else was very well made with these diaghragms.

Victor Pace



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Post by Dennis Nicholas » Thu Nov 15, 2018 10:54 pm

I had some rubber diaphragms for my GTC from MGBhive. Had to return one which had metal bar torn through rubber (hook hooks onto metal bar moulded into rubber. Very helpful firm replaced it.
If I ever have to renew a seat diaphragm again I would go for the strips of webbing type as seen on some furniture (e.g. Ercol chairs). MGBhive do/used to do those as well. I have the feeling that the rubber diaphragm might not last very long whereas the rubber/webbing type would be much better.
You can buy the strips and make your own (or buy an old furniture at an auction and use the strips from it) The Ercol strips are very good quality as seen by those on my settee and chairs wedding present of 1968 still being in good compliant condition.

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