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Dynax 7 - sticky back - any cure ?

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alpha_in_exile View Drop Down
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Post Options Post Options   Quote alpha_in_exile Quote  Post ReplyReply Direct Link To This Post Posted: 03 November 2012 at 13:44
Too bad about the Auto Glym - that's the sort of thing I had in mind.

As a Jeep owner, I feel compelled to offer one more alternative. It would not be pretty at all, but - you could remove the rubber grip, and replace with a spray-on rubber coating. (Apparently I can't think of anything but automotive solutions, not sure what my problem is, but there you are). The only remaining alternative (that I can think of) would be to replace the grip (the rubber part) from a 'dead' 7.

EDIT: Has anyone checked with Gary Friedman, dyxumer PeteMag, or our other resident fix-everything people?

Edited by alpha_in_exile - 03 November 2012 at 13:47
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Sky_walker View Drop Down
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Post Options Post Options   Quote Sky_walker Quote  Post ReplyReply Direct Link To This Post Posted: 03 November 2012 at 15:01
I think that the spray-on rubber is what I had in mind posting this. Sounds reasonable for extreme cases.
I guess you can also use it as a decorative measure - just imagine Dynax 7 with Blaze Pink back.
In either way - anyone trying something like that should be extra-careful as this rubber will be in contact with the skin, so it'd be good to have something non-allergic, preferably stuff that can be sprayed on steering wheel (as it runs though similar usage).

If anyone wants to replace the back of Dynax 7 on his own - here is repair manual. Might be helpful. Though I wouldn't advise messing with stuff like that without skills.

Originally posted by Bob J Bob J wrote:

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

Thanks for the remark, I guess you are right - after all both Sony and Minolta clearly state that cameras should be stored in ventilated space.

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Post Options Post Options   Quote revdocjim Quote  Post ReplyReply Direct Link To This Post Posted: 03 November 2012 at 18:01
Of the many similar threads I've read over the years on this topic I think this one might be the most productive. I also have a 7 that I bought very cheaply ($65) because it was sticky. Otherwise it works beautifully so I've always considered it a good deal and have enjoyed taking some great photos with it, especially in the STF mode!

I took non-chemical citrus cleaner to it and really scrubbed hard. In several places I rubbed all the rubber off. What's left isn't quite as sticky as before but still sticky.

The used camera stores in Tokyo are all very aware of this problem and immediately discount the price of a camera heavily if it suffers sticky rubber. So that suggests to me that they have yet to find a solution.
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IanL View Drop Down
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Post Options Post Options   Quote IanL Quote  Post ReplyReply Direct Link To This Post Posted: 03 November 2012 at 18:10
Originally posted by Sky_walker Sky_walker wrote:

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.


Give it a week or two and try another application. I think I remember my use benefiting from a second application after a short time.
Ian
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Ed Shutter View Drop Down
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Post Options Post Options   Quote Ed Shutter Quote  Post ReplyReply Direct Link To This Post Posted: 01 December 2012 at 21:32
I used toilet milk for babies (Mixa bébé). It works.
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lmt View Drop Down
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Post Options Post Options   Quote lmt Quote  Post ReplyReply Direct Link To This Post Posted: 01 December 2012 at 22:26
You can remove that sticky layer by using:
* Disk washing cloth (rough one!)
* and nail enamel removing liquid (acetol?)
Total cost is less than $3 and you can clean more than 10 sticky cameras!!!
Just my 2c and hope it help!
 



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Ed Shutter View Drop Down
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Post Options Post Options   Quote Ed Shutter Quote  Post ReplyReply Direct Link To This Post Posted: 01 December 2012 at 22:32
Nail cleaner ? I'm a bit afraid of using solvents on plastic or rubber.
Toilet milk for babies works and its safe.
Safe as milk
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Post Options Post Options   Quote Sky_walker Quote  Post ReplyReply Direct Link To This Post Posted: 02 March 2013 at 21:20
4 months later:

I used Auto-Glym roughly 3 times over last 4 months, and kept my Alpha 7 on a bookshelf so I'd have access to the fresh air (I read somewhere it might help, or at least: prevent developing any further stickiness)

My impressions are generally positive. Seems like at least to a degree my camera feels better. Yes, it is more sticky than rubber on Sony A77, but nowhere near as bad as it used to be.

Most importantly though - it made rubber far more resilient, so now I'm not afraid to throw the camera into a backpack. :)

___________________________________________________

As for nail enamel removing liquid or any solvents - I'd highly advice against it. As I mentioned before - when back develops stickiness it's extremely fragile! Using any solvents might cause it to fall off even after very gentle rubbing.
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IanL View Drop Down
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Post Options Post Options   Quote IanL Quote  Post ReplyReply Direct Link To This Post Posted: 02 March 2013 at 21:54
That's great news. I suppose the formulation of that "sticky rubber" is rather less amenable to the treatment than the non-sticky variety on my car, but it may improve with further applications.
Ian
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prognathous View Drop Down
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Post Options Post Options   Quote prognathous Quote  Post ReplyReply Direct Link To This Post Posted: 10 May 2016 at 01:13
Any updates about this subject? Is Auto-Glym still the way to go?
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Post Options Post Options   Quote pityacka Quote  Post ReplyReply Direct Link To This Post Posted: 16 August 2016 at 11:50
prognathous, Looks like this has died the death, and with no definite result suggested. Examined my 7 today and I think the stickiness is developing slightly more. I have not tried any of the suggestions posted previously.
On ebay UK there is a Dynax 7 for sale, and quote "with the sticky back problem solved." Price is £99-99p. I may contact the seller to see how he has managed to rectify the problem.
My 7 is firing without a lens attached, but on attaching a lens, it will not fire. BUT I have learned from this thread (page 2, I think) there is a custom function where if there is no film in the camera, the shutter will not fire. Will check the manual and alter the appropriate function.

If the ebay seller does disclose his remedy, I will post it in here.
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Post Options Post Options   Quote prognathous Quote  Post ReplyReply Direct Link To This Post Posted: 16 August 2016 at 12:03
Thank you. I haven't solved this issue yet so definitely appreciate any update.
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neilt3 View Drop Down
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Post Options Post Options   Quote neilt3 Quote  Post ReplyReply Direct Link To This Post Posted: 16 August 2016 at 12:04
I have 3 Dynax 7's , all have had the sticky backs .

One I cleaned with Acetone , though this was advised against .
Doesn't seem to have done any harm , and it's my main film camera .

The other two , one of which is faulty I have for spares , I have cleaned them up with   IsoPropyl Alcohol at 99.9% pure .
They have come up perfect .
All the gunk is gone , back to smooth plastic .
I just put some on a piece of coarse cloth and rubbed it off .

Ebay link for lab grade Isopropanol alcohol
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prognathous View Drop Down
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Post Options Post Options   Quote prognathous Quote  Post ReplyReply Direct Link To This Post Posted: 16 August 2016 at 12:06
Nelit, can you post pictures of the result (with Acetone and with IsoPropyl Alcoho)?

Thanks!
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