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Dynax 7 - sticky back - any cure ?

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pityacka View Drop Down
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Post Options Post Options   Quote pityacka Quote  Post ReplyReply Direct Link To This Post Posted: 03 July 2012 at 12:21
Still searching and trawling for the answer/cure. Opinion here seems to suggest ignoring liquid matter and the like. One bloke says that his Nikon F90X also suffered the problem on the rubberised part of the camera back, so it is not confined to Minoltas. I will bide my time for now, but if it comes to a trial I will see what french chalk does.
 



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RichieO View Drop Down
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Post Options Post Options   Quote RichieO Quote  Post ReplyReply Direct Link To This Post Posted: 09 July 2012 at 14:40
Would acetone work?? I have used that in the past to remove the sticky residue left over from labels and such......just a thought.

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Post Options Post Options   Quote momech Quote  Post ReplyReply Direct Link To This Post Posted: 09 July 2012 at 15:26
Acetone is a powerful solvent and would probably remove the rubberized coating and eat into the plastic in short order.
What's needed is not a solvent - that's what caused the problem - but some type of compound to stabilize the surface of the rubber coating that's already damaged.
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Post Options Post Options   Quote alpha_in_exile Quote  Post ReplyReply Direct Link To This Post Posted: 09 July 2012 at 16:13
What about the stuff they use to recondition rubber in automobiles?
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Post Options Post Options   Quote pityacka Quote  Post ReplyReply Direct Link To This Post Posted: 12 July 2012 at 13:45
alpha_in_exile, I do not know anything about what you suggest, but might it not be a bit too 'strong' to use on a camera back, compared to what is used to recondition rubber in automobiles ? I have spent the last 20 mins searching google. My thoughts of talcum powder or French chalk is classed as a 'no'no' there. The fine powder could get into the camera. Another suggestions was rubber paint used for rubber boats.
Apparently the Nikon 90X was well known for this defect and many owners simply stripped off the offending material.
However, I still think that someone will come up with a remedy. It is usually the case - some guy stumbles upon it by accident, then let's us all know.
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Post Options Post Options   Quote pityacka Quote  Post ReplyReply Direct Link To This Post Posted: 01 September 2012 at 13:29
Possibly a bit of good news, and the cure. I posted this problem on another photo forum, which resulted in a reply from someone here in the UK. His mother had sugggested using a substance which removes 'goo'/sticky which has been left as a result of sticky labels. He tried it on his Dynax 7 and has reported some success. The 'stuff' can be bought at Amazon - link: http://www.amazon.co.uk/HG-Hagevan-Ltd-Sticker-Remover/dp/BoooIu3vsa
It is a Dutch firm. They also have their own website, BUT the product is not listed.
The person using the goo remover has used it partially on the camera, and I asked him to update, and report the final result when he has completed the cleaning.
I have not tried french chalk so cannot comment on using that.
If I am allowed to post the other photo forum it is PhotoNet, and my query was posted in the Sony/Minolta thread.

Edited by Micholand - 01 September 2012 at 15:15
 



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Post Options Post Options   Quote IanL Quote  Post ReplyReply Direct Link To This Post Posted: 01 September 2012 at 16:21
The answer is Auto-Glym Vinyl and Rubber Care, available from Halfords. It is a milky-white fluid which "vanishes" into the rubber, and the stickiness is miraculously eliminated, being replaced by a smooth, glossy surface. The effect is long-term.

The downside may be that the grip is a little slippery, compared to new, but that is better than sticky.
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Post Options Post Options   Quote pityacka Quote  Post ReplyReply Direct Link To This Post Posted: 02 September 2012 at 13:23
IanL, Thank you for that information. Have you actually used this yourself ? From your post, I guess that you have, and are pleased with the result. If the result is long term, and you can recommend its use I will certainly be using it on my Dynax 7.
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Post Options Post Options   Quote IanL Quote  Post ReplyReply Direct Link To This Post Posted: 02 September 2012 at 17:34
I have used it with great success on a very expensive rubber part of my Suzuki Cappuccino's roof system. The surface seemed to have been attacked by some mysterious chemical, which had created a sticky-goo layer.

The transformation was remarkable and it has lasted for about 5 or 6 years, with no sign of a relapse.

Obviously there are many different artificial rubber formulations, so I cannot guarantee the effect, but I would not hesitate to try it "on an inconspicuous area", as they say.
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Post Options Post Options   Quote Sky_walker Quote  Post ReplyReply Direct Link To This Post Posted: 26 October 2012 at 08:36
Thanks for the report.
I think I'll try that.

As for the link pityacka been posting. Here's the one that works: HG Sticker Remover.
I've seen the original report - seems quite positive, although apparently it causes some discolouration. I think I'll pass it then. I will try to post the impressions after using Auto Glym. (people sell it on e-bay. Cost is ~5.50 GBP)

I tried cleaning with the alcohol - didn't change anything (I got rid of quite a bit of dirt though).

One important thing though: This rubber when getting to the "sticky" phase is EXTREMELY fragile - I removed it from 2 spots simply by trying too hard to clean dust out of the corners .

Out of pure curiosity - You know if anyone offers a service of... how to put it... adding a new cover layer onto devices? You know, kinda like what Hasselblad did with NEX 7 to create Lunar - a rubber in spray to create a new layer on the back?
This way we could save some old Minoltas - simply use WD40 to remove rubber from the back, then give it to the service provider and get it with brand new covering layer.
My bet would be that some of audiophiles might know the ways of refurbishing old equipment :) though I don't know any....

Edited by Sky_walker - 26 October 2012 at 08:43
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Post Options Post Options   Quote matthiaspaul Quote  Post ReplyReply Direct Link To This Post Posted: 26 October 2012 at 09:21
Originally posted by pityacka pityacka wrote:

I have tried a search here re the above problem but have not been successful. So has anyone come across this 'fault' with the Dynax 7? My attention was brought to it by a Dynax 7 for sale on the bay here in the UK this weekend. Listed as "faulty" and that was the only fault with the camera. Everything else was perfect and in working order. The seller said it was not a pleasure to use due to the stickiness of its back cover. It put me off bidding, and it went for L31.

I'm just seeing this now...

Actually, the "stickiness" of the rubber is no fault at all, it is by design (Minolta called this feature "wet type rubber"). ;-)

Greetings,

Matthias

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Post Options Post Options   Quote AudioDoc Quote  Post ReplyReply Direct Link To This Post Posted: 26 October 2012 at 18:35
Originally posted by matthiaspaul matthiaspaul wrote:

Originally posted by pityacka pityacka wrote:

I have tried a search here re the above problem but have not been successful. So has anyone come across this 'fault' with the Dynax 7? My attention was brought to it by a Dynax 7 for sale on the bay here in the UK this weekend. Listed as "faulty" and that was the only fault with the camera. Everything else was perfect and in working order. The seller said it was not a pleasure to use due to the stickiness of its back cover. It put me off bidding, and it went for L31.

I'm just seeing this now...

Actually, the "stickiness" of the rubber is no fault at all, it is by design (Minolta called this feature "wet type rubber"). ;-)

Greetings,

Matthias


Matthias,

When they say sticky, they mean, really sticky. Very tacky, adhesive tape sticky. I've seen it, in fact I have collected three 7s one of which has the stickiness the OP is referring too. It is the most used of the three and I'm thinking it is some kind of chemical break down of
of what you say Minolta named "wet rubber". I purchased my Dynax 7 new and it is fine. The used Maxxum 7 I purchased from KEH as "non operational" for $8.50 (film data count about 1365 when purchased) is the one that is sticky -- though it is operationa,l btw -- custom function was set for no shutter operation with no film -- guess KEH overlooked that. Any way, my theory is that perhaps the user's hands can perhaps cause this problem. Perhaps it is from skin oils or perhaps they apply some lotion to their hands that causes it.

Regards,

Kelly
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Post Options Post Options   Quote Sky_walker Quote  Post ReplyReply Direct Link To This Post Posted: 03 November 2012 at 13:26
I tried Auto Glym Vinyl & Rubber Care - well, one thing is certain: As advertised: it does leave a fresh citrus fragrance.

But besides that: the rubber appears to be less sticky, but it's still sticky. I guess right now it's something you could pull under "wet type rubber" label with a bit of good will but it's still not truly comfortable.
One good thing I noticed is that rubber now seems to be slightly more resistant, although I wouldn't want try it...

In general - if you buy it: don't expect too much. There is an improvement but it won't turn an old rubber into anything close to the brand new one.
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Post Options Post Options   Quote Bob J Quote  Post ReplyReply Direct Link To This Post Posted: 03 November 2012 at 13:39
I had/have a JVC video camers that is stored in a hard plastic case: when it had been stored for some time without use, it showed a lot of sticky rubber - I suspect that in confined spaces without air circulation there might be some leeching of solvents from nearby plastics into the rubber surface.

I reckon that the air circulation associated with regular use should be a way of preventing such breakdowns of the rubber grips...
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