Author Topic: powder coating  (Read 1148 times)

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Offline kawajockey

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powder coating
« on: December 09, 2016, 09:18:32 AM »
This might be a silly question to ask but here goes. When powder coating a frame do you need to remove the serial number plate ? My concern is that it might get ruined in the oven. Is there something that a poweder coater would put over the plate or must you remove it and add it later ? Thanks

Offline bsracer

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Re: powder coating
« Reply #1 on: December 09, 2016, 10:07:02 AM »
Usually any area that you don't want to get the powder coat material on gets taped off. There are those metal/aluminum type tapes that are mostly used. Powder coating is tough to clean up after it's applied. Threaded holes usually get a bolt left in them and taped over so the bolt can be removed. I would still run a tap thru any threaded hole. I would probably remove the plate and rivet it back on after powder coating.

paul

Offline CL-100

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Re: powder coating
« Reply #2 on: December 09, 2016, 10:30:15 AM »
I bought a bike where the seller had powder coated the frame during the restoration.  The tag melted during the oven part of the process.  The tags are easy to get on/off and you can usually reuse the original pins.

Offline slawsonb

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Re: powder coating
« Reply #3 on: December 09, 2016, 10:36:30 AM »
Definitely remove the tag. If you gently tap the back of the rivets, they will come out pretty easily and can be reused with some epoxy in the holes. Just be careful not to lose the rivets while removing. They are not a standard size and very small and hard to find in the cracks of your shop floor (voice of experience here...;-).
...bert

Oh yeah...a strip of duct tape over them on the tag side will hold them until you can safely stash them away...
« Last Edit: December 09, 2016, 10:38:54 AM by slawsonb »

Offline kawajockey

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Re: powder coating
« Reply #4 on: December 12, 2016, 04:52:27 PM »
Thanks everyone for the advice. I now have a much better game plan for this bike. This is why these forums are so beneficial. Many years worth of knowledge when shared goes a long way.

Offline 666jon

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Re: powder coating
« Reply #5 on: December 15, 2016, 03:44:56 PM »
What about removing the rubber engine mount bushes? Will they survive coating or are they easy to remove and replace without damaging?

Offline srpackrat49

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Re: powder coating
« Reply #6 on: December 15, 2016, 04:26:59 PM »
Well i have 2 sandblasters.... So thats what i do... Then just paint it black...... On my 350 GTO there seams to be white paint under the black on the swingarm????????  but no wear elese?????  So watts up with that  8)

Online OldSwartout

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Re: powder coating
« Reply #7 on: December 15, 2016, 09:31:16 PM »
What about removing the rubber engine mount bushes? Will they survive coating or are they easy to remove and replace without damaging?

Powder coating requires heating to approximately 400° F (200° C). Any plastic or rubber parts will be damaged.
Karl Swartout
Mooresville, IN
BS175 Roadracer
BS350 GTR

Offline slawsonb

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Re: powder coating
« Reply #8 on: December 16, 2016, 11:57:08 AM »
And the motor mount bushings are not easy to remove, but they can be saved and reused assuming the rubber is in good condition.
...bert

Offline kawajockey

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Re: powder coating
« Reply #9 on: December 16, 2016, 01:20:37 PM »
Ok you GTR guru's, what's the trick to removing these engine mount bushings. Does anyone know if new ones are available to be purchased ?

Offline slawsonb

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Re: powder coating
« Reply #10 on: December 16, 2016, 03:23:58 PM »
I'm no guru, but, yes there are repros offered by Richard Clark (site owner). Other members may have NOS replacements in their stashes, as well. To remove them you need a socket the same diameter as the outside metal sleeve of the bushing. Set the mounting bracket on another socket that is larger than the bushing (as much as possible while still supporting the bracket). Drive the bushing out with as little pounding as you can get away with. I have had these come out easily, and others that required some determination. If you plan to try to reuse the bushings, it is very important that the socket used to drive the bushing out of the bracket be as close to the outside sleeve diameter as possible to avoid damage to the sleeve. If you have a press, using it is preferable to the hammer. Also using some hardwood, brass, or aluminum to protect your socket from the hammer is a good idea. Good luck...and go slow...
...bert

Oh yeah...A small amount of penetrating oil around the outside will also help to loosen things up.
« Last Edit: December 16, 2016, 04:16:54 PM by slawsonb »

 


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