Author Topic: 75 year old rubber . . .  (Read 713 times)

Offline Brandis

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75 year old rubber . . .
« on: 23.12. 2022 15:58 »
Knee pads on the tank are original '47.  I removed them with the plates.  Is there anything I could do to make them look a bit better and last another few decades ?

PS:  Merry Christmas to all.  Including all those freezing Canuks and broiling ANZACs.
47 A7

Online Tim I

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Re: 75 year old rubber . . .
« Reply #1 on: 23.12. 2022 16:48 »
Vinylex should help.

Online muskrat

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Re: 75 year old rubber . . .
« Reply #2 on: 23.12. 2022 19:30 »
G'day Brandis.
I've been thinking the same about my original knee grips on the 51 A7. I've ordered a can of Wurth RPR RUBBER & PLASTIC REJUVENATOR. I've used a few Wurth products and all have worked so I'll give it a try.
Cheers
'51 A7 plunger, '57 A7SS racer now a A10CR, '78 XT500, '83 CB1100F, 88 HD FXST, 2000 CBR929RR ex Honda Australia Superbike .
Australia
Muskys Plunger A7

Online Triton Thrasher

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Re: 75 year old rubber . . .
« Reply #3 on: 23.12. 2022 22:06 »
Boot polish.

Offline Colsbeeza

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Re: 75 year old rubber . . .
« Reply #4 on: 23.12. 2022 22:46 »
A very interesting topic. We all have some very old bikes with rubber to match. Some good feedback on how the various treatments perform would be handy.
I have one bike with knee rubbers with no apparent means to attach or remove. I eventually found two slots cut in the rubber which allowed me to insert a small screwdriver. I used soapy water as lubricant, but it distorted the rubber though, and a good treatment may have minimised damage.
Col
1961 Golden Flash
Australia

Offline KiwiGF

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Re: 75 year old rubber . . .
« Reply #5 on: 24.12. 2022 01:09 »
Knee pads on the tank are original '47.  I removed them with the plates.  Is there anything I could do to make them look a bit better and last another few decades ?

PS:  Merry Christmas to all.  Including all those freezing Canuks and broiling ANZACs.

This armor all stuff works https://www.supercheapauto.co.nz/p/armor-all-armor-all-original-protectant-500ml/1156.html#q=Armor&lang=en_NZ&start=22
New Zealand

1956 A10 Golden Flash  (1st finished project)
1949 B31 rigid “400cc”  (2nd finished project)
1968 B44 Victor Special (3rd finished project)
2001 GL1800 Goldwing, well, the wife likes it
2009 KTM 990 Adventure, cos it’s 100% nuts

Offline BagONails

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Re: 75 year old rubber . . .
« Reply #6 on: 24.12. 2022 05:34 »
The cheapest thing I've found which works very well on plastics and rubber is Vaseline (Petroleum Jelly). It rejuvenates and seems to protect sun and age hardened plastics restoring colour, blackness and texture to aged and sun damaged surfaces. It comes from the same source as most plastics so has a natural affinity to them I suppose.  Not sure exactly how but it does seem to work and last for quite a while.

Happy Yuletide to all wherever your are.
Cheers Bagga
Ian
59 GF A10
67 Spitfire under resto
2013 kwaka W800 Desert Sled (ex write off)

Nil Desperandum

Offline fffcycles

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Re: 75 year old rubber . . .
« Reply #7 on: 24.12. 2022 15:06 »
I have used xylene and Wintergreen oil mix sprayed on items then sealed in a plastic bag for a few days successfully on really old objects I wish to reuse and the Wurth’s rubber renew is a product my buddy and I use quite a bit with very good result.
Frank
Frank P Kamloops BC
1948 A7 Long Stroke, a collection of BSA D1/B44/B50/A65 from the 50's thru 70's, Ariels/Nortons/Triumphs and a smattering of Japanese

Online Bsareg

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Re: 75 year old rubber . . .
« Reply #8 on: 24.12. 2022 19:39 »
Would that work on cracked tyres🤔😁
Helston, Cornwall C11,B40,B44 Victor,A10,RGS,M21,Rocket3,REBSA

Offline Brandis

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Re: 75 year old rubber . . .
« Reply #9 on: 24.12. 2022 20:23 »
The knee pads have no weight bearing/flexing under load issues. They are ugly but not cracked. The results I'm looking for are purely cosmetic. I imagine that cracks in the tire are signs of bigger problems.  And nothing, to my knowledge will 'heal' the cracks.
47 A7

Online Greybeard

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Re: 75 year old rubber . . .
« Reply #10 on: 24.12. 2022 23:13 »
Is there any way to restore the flexibility of these 1965 Durex Condoms;  they chafe a bit?
Greybeard (Neil)
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A Distinguished Gentleman Riding his 1955 Plunger Golden Flash

Offline Brandis

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Re: 75 year old rubber . . .
« Reply #11 on: 25.12. 2022 01:24 »
In N. America, we use KW Jelly.      It's also good for installing the windshield seal on '51 Mk V Jaguars. 
And other stuff.
Now get some sleep.  You've got a busy day tomorrow.
47 A7

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Re: 75 year old rubber . . .
« Reply #12 on: 25.12. 2022 07:22 »
G'day Brandis.
KY has a lot of uses especially with the bar trophy *smile*
I've just got home from lunch, only 4 beers. Now it's my turn *smiley4*
Cheers
'51 A7 plunger, '57 A7SS racer now a A10CR, '78 XT500, '83 CB1100F, 88 HD FXST, 2000 CBR929RR ex Honda Australia Superbike .
Australia
Muskys Plunger A7

Online Rex

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Re: 75 year old rubber . . .
« Reply #13 on: 25.12. 2022 13:10 »
I have a couple of original tank rubbers which though unworn have a slight "crinkle" in them and no longer lie flat to the tank. And suggestions to make them more flexible or supple so they can be reused and look good again?