ADVrider

Go Back   ADVrider > Gear > The Garage
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 01-08-2013, 08:55 AM   #1
Mav OP
Something witty...
 
Mav's Avatar
 
Joined: Sep 2006
Location: Blighty
Oddometer: 3,709
Paint or powdercoat?

The rear subframe on my R12GSA chassis is really corroded and my dealer is offering a great deal to get it off the bike. So my question is - should I be looking to get it powder coated or simply repainted?

The bike is 70k hard miles old and I intend to keep abusing it! So what recommendations do you have?
__________________
Mav

-------------------------
All the gear.. no idea!
Mav is offline   Reply With Quote
Old 01-08-2013, 09:05 AM   #2
toro618
Studly Adventurer
 
toro618's Avatar
 
Joined: Jun 2009
Location: NJ
Oddometer: 942
Quote:
Originally Posted by Mav View Post
The rear subframe on my R12GSA chassis is really corroded and my dealer is offering a great deal to get it off the bike. So my question is - should I be looking to get it powder coated or simply repainted?

The bike is 70k hard miles old and I intend to keep abusing it! So what recommendations do you have?
Without a doube powder coated. By far more durable than paint.
toro618 is online now   Reply With Quote
Old 01-08-2013, 09:10 AM   #3
tommymerle
advwanabee
 
tommymerle's Avatar
 
Joined: Apr 2009
Location: frozen north (Lutsen, Minnesota)
Oddometer: 342
Paint. You will be able to see when it is in need of touching up better. Powder coating, when pitted or cracked allows water in that stays there and works it's dirty little corroding magic while the outside looks good, till it's too late.
Bare steel, allowed to corrode but dry quickly will maintain it's strength just doesn't look pretty (except maybe to me).

My 2 cents worth
__________________
2000 Aprilia Pegaso
tommymerle is offline   Reply With Quote
Old 01-08-2013, 09:11 AM   #4
H96669
A proud pragmatist.
 
H96669's Avatar
 
Joined: Nov 2009
Location: Hiding off Hwy 6, B.C.
Oddometer: 4,462
Try to look up what kind of powder they may be using, they are certainly not all the same. I just bought some "extra durable wet black" for my own BMW projects, much better specs as to resistance to salt sprays etc...etc....!
__________________
Have tools, will travel!
H96669 is offline   Reply With Quote
Old 01-08-2013, 09:15 AM   #5
Mav OP
Something witty...
 
Mav's Avatar
 
Joined: Sep 2006
Location: Blighty
Oddometer: 3,709
Quote:
Originally Posted by toro618 View Post
Without a doube powder coated. By far more durable than paint.
Any concerns with adding bulk to the chassis making refitting some of the parts difficult?

Quote:
Originally Posted by tommymerle View Post
Paint. You will be able to see when it is in need of touching up better. Powder coating, when pitted or cracked allows water in that stays there and works it's dirty little corroding magic while the outside looks good, till it's too late.
Bare steel, allowed to corrode but dry quickly will maintain it's strength just doesn't look pretty (except maybe to me).

My 2 cents worth
I think that is what has allowed my chassis to last as long as it has - surface rust that looks bad but actually isn't that deep and it's retained strength.

Quote:
Originally Posted by H96669 View Post
Try to look up what kind of powder they may be using, they are certainly not all the same. I just bought some "extra durable wet black" for my own BMW projects, much better specs as to resistance to salt sprays etc...etc....!
I haven't chosen the vendor yet so the product to be used is still TBD...
__________________
Mav

-------------------------
All the gear.. no idea!
Mav is offline   Reply With Quote
Old 01-08-2013, 12:03 PM   #6
sailah
Lampin' it
 
sailah's Avatar
 
Joined: Aug 2005
Location: Turning expensive metal into scrap
Oddometer: 5,463
Personally I'd coat it. Is it steel or aluminum?

The powder will add thickness to parts so I'd make sure the coater blocks off threads and places where the tolerances matter.

Powder is fairly permanent and very durable, paint easily gets scratched and chipped and you might end up redoing it soon.

I think the corrosion thing is overblown personally
__________________
We're not out here to rough it. We're here to smooth it . Things are rough enough in town.

Nessmuk
sailah is online now   Reply With Quote
Old 01-08-2013, 12:09 PM   #7
Navin
Beastly Adventurer
 
Navin's Avatar
 
Joined: Sep 2009
Oddometer: 7,494
Strip it and Por-15 it.
Navin is offline   Reply With Quote
Old 01-08-2013, 12:19 PM   #8
Beezer
Beastly Adventurer
 
Joined: Oct 2004
Location: Anchorage, formerly Spenard (hub of the universe)
Oddometer: 5,479
nothing is better than a high quality paint, and paint can be retouched.

powdercoat (like paint) can be really good or really poor. I think powdercoat became the industry standard because of EPA rules (it does not have the vapors to deal with) and mostly, it is very fast once you are set up to do it.

I have seen a lot of rust grow under P/C from a small nick. then the piece has to be completely stripped to fix it so it doesn't look like crap.

in any case, have the frame blasted and/or chemically etched to kill the rust.
Beezer is offline   Reply With Quote
Old 01-08-2013, 12:43 PM   #9
Mav OP
Something witty...
 
Mav's Avatar
 
Joined: Sep 2006
Location: Blighty
Oddometer: 3,709
Quote:
Originally Posted by Beezer View Post
nothing is better than a high quality paint, and paint can be retouched.

powdercoat (like paint) can be really good or really poor. I think powdercoat became the industry standard because of EPA rules (it does not have the vapors to deal with) and mostly, it is very fast once you are set up to do it.

I have seen a lot of rust grow under P/C from a small nick. then the piece has to be completely stripped to fix it so it doesn't look like crap.

in any case, have the frame blasted and/or chemically etched to kill the rust.
Being able to see the start of rust and to be able to touch it up makes a pretty compelling argument for paint.

Thanks
__________________
Mav

-------------------------
All the gear.. no idea!
Mav is offline   Reply With Quote
Old 01-08-2013, 04:59 PM   #10
redprimo
Gnarly Adventurer
 
Joined: Jul 2011
Location: central coast of California
Oddometer: 378
Powder coat will most likely be cheaper. I recently had a frame done and the quote for the frame was $160. I had them do the frame, swing arm, motor mount brackets, foot peg brackets and the springs from the rear shocks(vintage twin shock bike) the springs were done in a different color and the total was $235 out the door. that price also included degreasing and sand blasting.

It is standard practice for the powder coating company to plug all threaded openings with silicone plugs. They aso plugged where the swing arm bushings go but not some of the other holes such as the hole for the bolt for my lower shock mounts as well as the boss where the upper shock mounts to the frame. my frame has a primer coat as well as the color coat and the epoxy is way thicker than paint. There have been quite a few areas that I have had to use a file or sand paper to get things to fit properly. Also the silicone plugs work well at keeping the threads clean but they leave a ring of epoxy that needs to be cleaned up with a knife.

Im very happy with the results. The epoxy that my powder coater used is extreamely hard so I don't see chips being a problem. If I were doing a bike that would see extreme conditions I would't use anything but powder coating.
redprimo is offline   Reply With Quote
Old 01-08-2013, 05:07 PM   #11
kubiak
Beastly Adventurer
 
Joined: Nov 2007
Location: madera california
Oddometer: 4,809
im a automotive painter for the last 30 years and i would still go powdercoat over paint. just my opinion though. i had a bunch of motorcycle stuff powdercoated and its tough stuff. when i did get a chip in it i would just dab a little paint on the chip to keep the elements out just like if it was painted.
kubiak is offline   Reply With Quote
Old 01-08-2013, 11:09 PM   #12
Beezer
Beastly Adventurer
 
Joined: Oct 2004
Location: Anchorage, formerly Spenard (hub of the universe)
Oddometer: 5,479
"The epoxy that my powder coater used is extreamely hard".... tell me more. do you mean epoxy primer under the powder coat?

and I agree..... powder coat is prolly cheaper than (good) paint.
Beezer is offline   Reply With Quote
Old 01-09-2013, 02:00 AM   #13
redprimo
Gnarly Adventurer
 
Joined: Jul 2011
Location: central coast of California
Oddometer: 378
Quote:
Originally Posted by Beezer View Post
"The epoxy that my powder coater used is extreamely hard".... tell me more. do you mean epoxy primer under the powder coat?

and I agree..... powder coat is prolly cheaper than (good) paint.

Thermoseting powders cross link during the bake and react chemically, where as the thermoplastic powders just melt and flow out to make a smooth coating. My frame was coated using Tiger Drylac series 38, and Im not sure which primer but it was also a Tiger Drylac product
redprimo is offline   Reply With Quote
Old 01-09-2013, 03:36 AM   #14
philgunn
BMW R80gs offroad + HP2
 
Joined: May 2004
Location: Cork Ireland
Oddometer: 244
Mav

if powder-coating goes wrong , is it nearly impossible to Remove !

have been doing a lot of research into this area , and it looks like that the most important area is the primary coat , and if you use a Chemical Etch primer 2 coats you are off to the best start possible . and in the UK even , Hammerite Smooth will give you a durable finish , that is re touchable ?

Phil Gunn

ps What POR 15 product do you refer to , I and about to use POR 15 to Seal a Steel petrol Tank ?
__________________
Gunner

Eating Cheese , Drinking wine , catching some rays
philgunn is offline   Reply With Quote
Old 01-09-2013, 10:08 AM   #15
Navin
Beastly Adventurer
 
Navin's Avatar
 
Joined: Sep 2009
Oddometer: 7,494
http://www.summitracing.com/search/b...s?autoview=SKU

or

http://www.summitracing.com/search/b...t?autoview=SKU

Navin is offline   Reply With Quote
Reply

Share

Thread Tools Search this Thread
Search this Thread:

.
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


Times are GMT -7.   It's 03:11 PM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014