Black Knee Pads On Side Of Gas Tank? - Triumph Forum: Triumph Rat Motorcycle Forums
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post #1 of 25 (permalink) Old 07-03-2017, 06:50 PM Thread Starter
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Black Knee Pads On Side Of Gas Tank?

What is the best, or correct, way to secure the knee pads to the side of the gas tank on a 70 Bonneville?
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post #2 of 25 (permalink) Old 07-03-2017, 07:24 PM
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What is the best, or correct, way to secure the knee pads to the side of the gas tank on a 70 Bonneville?
Plain old contact glue
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post #3 of 25 (permalink) Old 07-03-2017, 10:03 PM
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The original pads had a double sided tape applied to the pads. The paper backing was removed when you were ready to apply the pads to the tank

If I were doing it toady I would use 3M #3061 (www.walmart.com) or 3M #8061 (your local auto parts store)

Also check with your painter for suggestions


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post #4 of 25 (permalink) Old 07-04-2017, 12:43 AM
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I found some new old stock pads here in Oh, flat checkered surface with original Triumph Logo in center. They went on clean & perfect with RTV silicon sealer/glue. The important thing about using RTV is that it holds its properties (adhesion) up to 400 degrees F.
.
Clean rubber surface with alcohol (Lavacol) before applying RTV with flat brush. Let the RTV breathe for about ten minutes, and stick em on. They can be removed with a lot of slow and patient pushing with a wood shim, or similar. BTW Do not use acetone anywhere near your bike, or anything that's rubber based. Some fool had acetone in use around his tank - bye bye paint!

Hope this helps, Weedie
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post #5 of 25 (permalink) Old 07-04-2017, 02:01 AM Thread Starter
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Some great suggestions!

The rubber pads that I received do not have any adhesion on them and I guess that's the way they all come these days. I have some of that spray-on 3M adhesion the only thing is I'm concerned about being able to adjust the pad before it sets up. I'll do a test on something with it.

The silicone sounds like it would work pretty well. Probably have to tape the pad on the tank while it cures. I'll do a test on something with it too and see how long it takes to set up. I think ten minutes would be to long. Maybe it depends on the brand and type. Weedie, is that the way you did yours?
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post #6 of 25 (permalink) Old 07-04-2017, 02:45 AM
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I've always used RTV. Pipe it about an inch from the edge and squiggle in the middle. Push it firmly in place and wipe away any excess. Dries pretty quick to a point where it will hold the weight of the pad and sets up properly in a couple of hours at most. The advantage is that it is very easy to peal away the pad without damaging it and the the RTV on the tank will usually rub off using the tip of your finger and some friction. No damage to paint.

Rod
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post #7 of 25 (permalink) Old 07-04-2017, 04:45 AM
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The important thing about using RTV is that it holds its properties (adhesion) up to 400 degrees F.
If there's any likelihood of my petrol tank getting anywhere near 400F.... I'm going to be long gone!!!
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post #8 of 25 (permalink) Old 07-04-2017, 01:09 PM
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get the pads into the position you want them on the tank using loops of adhesive tape on the back of the pad - just enough to hold them -- then put tape on the tank all around the perimeter of the pad - take the pad off - now you have the exact position of the pad marked on the tank - adhesive of choice - job done
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post #9 of 25 (permalink) Old 07-04-2017, 11:26 PM
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If there's any likelihood of my petrol tank getting anywhere near 400F.... I'm going to be long gone!!!
Well, let's see. Aluminum goes molten at about 900 degrees F, so I think we're ok here. The 400 degree thing was just my abstract way of saying that no amount of heat off the engine is going to cook the RTV and make it fail, sending your knee pads flappin in the breeze.

Man the devil is always in the details. Notice the pictures of the powder coat failure UNDER the damn castrol stickers on a 5 year old bike? Thos stickers are coming off my bike tomorrow morning.

Carry on Lads, Weedie

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post #10 of 25 (permalink) Old 07-04-2017, 11:53 PM
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Thumbs up Code Man - RTV useage for your knee pads

Quote:
Originally Posted by Code Man View Post
Some great suggestions!

The rubber pads that I received do not have any adhesion on them and I guess that's the way they all come these days. I have some of that spray-on 3M adhesion the only thing is I'm concerned about being able to adjust the pad before it sets up. I'll do a test on something with it.

The silicone sounds like it would work pretty well. Probably have to tape the pad on the tank while it cures. I'll do a test on something with it too and see how long it takes to set up. I think ten minutes would be to long. Maybe it depends on the brand and type. Weedie, is that the way you did yours?
Hi CodeMan,
The RTV application is something we were using even way back in the day, it had a double use, for an instant gasket material, or for making things stick without ruining either surface. RTV will not harm the paint it sticks to.

Ok here more recently, I bought two little tubes off ebay, just to be sure it was fresh, sealed in its hang card. AutoZone probably sells it the same way, whichever.
THE HOW TO DO IT:
What I was careful about, clean both surfaces,no dust or fingerprints. Use alcohol on t shirt cotton, good to go.
I spread the RTV on thin with an artist paint brush, cover it right to the edge. Spread it on 100% of the surface of the pad, dont goop it on the pad in big blobs, it will ooze past the edges. It "cures" right away. I don't think RTV ever really dries out. Good idea to do your own tests, get familiar with the stuff.

Obviously, you have to know exactly where to set the pad. I taped it on with painter's tape, used two horizontal pieces of tape to reference the pad position, and then its ready for the RTV.

I made note of just exactly WHERE the end of my knee hit the side of the tank, and this gave me the fore/aft position for the pad. The tank on my Thruxton is no peanut, so it took some fooling around to figure out where they looked the best, Try more than than one position.

The RTV should be the automotive type, not the silicone stuff in the caulking tube.

Be patient, have fun. and let us know how it went. Pics are great if you got em.

Cheers, Weedie

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