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Author Topic: Dealing with a rattly screw  (Read 78 times)

Rich Mintz

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Dealing with a rattly screw
« on: July 24, 2014, 02:50:39 PM »
My other bike (SYM Symba, basically a Super Cub) has a rattly exhaust heat shield. The shield is held on by two screws, which are fixed in place (by corrosion, etc.). Unfortunately, the position they're fixed in is backed out about a millimeter, allowing the heat shield to bounce and rattle at both ends.

(I assume what happened is that there was formerly a lock washer in between the screw head and the hole, which has worked loose and fallen off.)

Eventually I'll take the thing apart and get the screws loosened and removed (this will be a project). In the meantime, what can I insert as a spacer, to hold the screws in place and reduce the rattling? Whatever it is has to be heat-tolerant, as this is the top of the exhaust -- but not so permanent that I can't get the screws out SOMEDAY.

Photo: https://www.dropbox.com/s/p97za3yqb9g62i6/2014-07-15%2017.35.39.jpg

barenekd

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Re: Dealing with a rattly screw
« Reply #1 on: July 24, 2014, 06:51:18 PM »
have you tried Liquid Wrench?
Note: I did NOT say WD40
Bare
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ROVERMAN

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Re: Dealing with a rattly screw
« Reply #2 on: July 24, 2014, 07:54:24 PM »
Nice one Bare!

Rich Mintz

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Re: Dealing with a rattly screw
« Reply #3 on: July 24, 2014, 08:01:37 PM »
Just picked some up at my neighborhood hardware and sprayed it all over the screws. Will see if it helps.

Arizoni

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Re: Dealing with a rattly screw
« Reply #4 on: Today at 12:40:40 AM »
Go to a Home Depot and buy a roll of  bare #22 guage copper wire.

Push the shield away from the screw head and tightly wrap as many turns as you can around the screw body.

The wire is heat proof and it will fill up the void between the screw head and the washer.

The only catch is the gap between the screw head and the washer must be larger than .025 inches (0.64mm).
http://www.homedepot.com/p/OOK-22-Gauge-Copper-Hobby-Wire-75-Ft-1-Roll-50163/100294013
Jim
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pmanaz1973

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Re: Dealing with a rattly screw
« Reply #5 on: Today at 04:16:10 AM »
I'm a huge fan of Kano Kroil.  It is a penetrating oil that works wonders.  I've used it to loosen header studs on a 1942 Jeep during a restoration and on impeller shafts frozen by salt water.  Spray it on, let it set overnight and typically even the most stubborn stud or bolt turns with ease.
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Rich Mintz

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Re: Dealing with a rattly screw
« Reply #6 on: Today at 03:52:04 PM »
Incredibly, Jim's #22 copper wire trick worked the first time. And I just did a hack job of squishing a little wire under one of the screws in a sloppy manner (didn't remove the footpeg or fairing that made access more difficult). The rattle is significantly dampened.

The solvent didn't seem to affect my ability to get the screws out, but without removing the footpeg and fairing, I don't have quite the right leverage to test. So that project will be put off to another day.

While I was in the garage sweating like a pig anyway, I took the rear rack and milk crate off the back of the bike. Photos later.

mattsz

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Re: Dealing with a rattly screw
« Reply #7 on: Today at 05:44:21 PM »
Incredibly, Jim's #22 copper wire trick worked the first time.

Don't say "incredibly" - you'll just make him feel bad...

Quote
While I was in the garage sweating like a pig anyway, I took the rear rack and milk crate off the back of the bike.

Too bad - as some of you know, I like a good milk-crate luggage basket!  At least I did... for a short while...  ;)