Powder coating of wheels

C

crm

Junior member
Location
Germany
Hello,
anybody have any experiences of powder coating narrow web wheels SF3 ? I have just had a set returned but am not very happy with the result.
The coaters have done several modern cast wheels for me and I never had any issues.
These have quite a few pinhole blisters and in addition have been coated I believe twice over in one session which makes for a most unattractive finish, losing lots of definition.
The coater seems to think they were badly corroded but they were original paint and just looking a bit tatty certainly not corroded.
The question is whether Laverda cast wheels are particularly prone to this gassing, might they have been too hot, or not heated long enough prior to coating to allow gassing out ?
Any tips for ensuring a blister free finish. He has agreed to do them again but suspects the result will not be much different.
The mounted wheel is not mine, just a random find to demonstrate to the coater what it should look like.
I do appreciate that you are never going to get a paint like finish with powder, but I think all things considered its the most practical solution.

https://imgbox.com/g/CtBPi89Y6T

https://www.goetz-pulverbeschichtung.de/Motorrad/Gallerie/Felgen/

Thanks in anticipation
Andy
 
Paint them with 2pac urethane. Any decent paint shop can mix the colours and fill a spray can for you. You can do it at home for a fraction of the cost and if the finish is up tp your standard you only have yourself to blame.
I'm not a fan of powder coat.
 
Had to do my thick webs twice, finish issues like yours & dull color as well first time around. May need to change shop.
 
motoddrob said:
Paint them with 2pac urethane. Any decent paint shop can mix the colours and fill a spray can for you. You can do it at home for a fraction of the cost and if the finish is up tp your standard you only have yourself to blame.
I'm not a fan of powder coat.
Click to expand...

How they mix two pack without it setting in the can?? Has to be exposed to more air to go off?
 
Piranha Brother 2 said:
How they mix two pack without it setting in the can?? Has to be exposed to more air to go off?
Click to expand...

Before use, the hardener agent is released from a smaller cavity within the can, you then have about an hour to use it up... :D

Actually works rather well.

piet
 
Powder coated on my Corsa years ago. Came out good and have held up.  Interesting enough both my SFC 1000 and my Corsa had bad finishes from the factory. On the SFC  the shiny clear coat came off with washing at the car wash the first time I washed it. On the Corsa the black paint flaked off from the outside  paint edge where it met the machined edge on the outer rim.
 
Just my opinion but I think powder coating wheels is a hassle and a waste of money, just saying I painted my wheels thick webs from a 78 jota about 5 years ago and to date, they look good, a few chips but you have to look close to find those chips. I painted them with a rattle can VHT Wheel paint Hi-temp Polyurethane (Satin Black), did not have to remove the wheel bearings, no bead blasting pre-paint just clean the wheel and spray. 5 years later they look great and if touch up is ever required just grab another can and spray with the next tire change. It is a no brainer for me I'm not looking for approval from the rivet counters.
 
Wheel bearings are cheap and removing them isn't rocket sience. The powder-coating on my alloy rims was close to perfect even 30.000km after I got it coated. cleaning was just sooooo easy: some spray of cleaner, some minutes waiting, some cleaning with a soft and wett spong and clearing it off with clear water - always looked like new!

Friend of mine bought them from me as I have the GSX-R-Rims installed. He is absolutely happy with them. Powder-Coating is 20 years old now.

I would have powder-coated the GSX-R-Rims for the 1000 SFC, too, if I only had found a gold suiting the painting of the frame and other parts. I ende up getting it painted with the same color as the frame, which looks just great. The original Paint chipped off at several parts and was no where near the quality of the powder coating I had on the Jota rims...
 
I got my SF3 wheels powder coated by a large powder coating company, silver with a powder coated clear lacquer. When I got them back I was able to peel the clear coat off with my nail. I went back and demanded my money back and took them to a guy who specializes in powder coating car wheels, much better. I've been told that when powder coating aluminium, during baking an inert gas is released which creates bubbles and leaves pin holes when it cools. There is a process to stop this happening but obviously not everyone uses it.
 
Sadly Laverda cast wheels are difficult to powder coat well due to the casting porosity. Pre-heating the casting is supposed to help, but my powder coating company always warns that 'blow hole' imperfections are likely.
GSXR rims have no such issues, which they say is  true for the majority of Japanese manufacturers.
 
Very timely, I picked these up from the coater yesterday.

IMG_0181_heic-XL.jpg


IMG_0182_heic-XL.jpg


IMG_0183_heic-XL.jpg



pete
 
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