Removing chrome... - Triumph Forum: Triumph Rat Motorcycle Forums
» Main Menu

Discussion Forums
 » Twins
 » Tiger
 » General
 » RAT

Features
 » Blogs

Motorcycle.com Links

Contribute
 » Photo

Motorcycle Forums
» Insurance
» Sponsors
» Our Partners
»ATV Reviews
»Motorcycle Games

Classic, Vintage & Veteran For Coventry and Meriden Models. Anything pre-Hinckley goes.

Reply
 
LinkBack Thread Tools Display Modes
Old 10-25-2012, 12:42 AM   #1 (permalink)
Senior Member
Powerbike
Main Motorcycle: '74 T140V Chop
 
Join Date: Jul 2012
Location: Woodbridge, UK
Posts: 388
Removing chrome...

I want to get rid of more shiny bits on my bike. Not a fan of clean looking things (this is why I rarely shave!).

I've never dabbled with this before though. Some of my chrome parts are rusty as well so I want to paint it all black.

Can you chemically remove the nickel layer using anything at home? Could you wire wheel it with a grinder? I'm really not sure of the options.

Any advice would be fantastic. Thanks!
loxx101 is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 10-25-2012, 08:50 AM   #2 (permalink)
Member
Grand Prix 125
Main Motorcycle: 71 Bonneville
 
Join Date: Aug 2012
Location: Duluth, GA USA
Posts: 35
I'm anxiously waiting to see answers to this one myself.

On my Jeep, I roughed up my chrome nerf bars with 150 grit, applied self-etching primer, and painted. They have held up very well through a lot of abuse - but that chrome was in good condition. Now I have foot pegs with flaking chrome, so I need to strip it off to get to a good surface.

-- Jim
Magnum_J is offline   Reply With Quote Quick reply to this message
Old 10-25-2012, 08:57 AM   #3 (permalink)
Senior Member
SuperStock
Main Motorcycle: 1971 Bonneville
 
therabbithole's Avatar
 
Join Date: Nov 2010
Location: Columbus, OH
Posts: 201
Extra Motorcycle: 1970 CL350
I think the only way to actually fully remove it is to reverse the electrolytic (not sure if that's the right word) process that put it (all three layers) on there in the first place. I had a bunch of bits that I wanted to unchrome, some of which were in decent shape and some of which were flaking badly. I got quotes from a plater to strip them, and someone recommended a Caswell kit that could have done it. Both were more expensive than I could manage.

If you're just painting them then roughing them up first with a grinder to get down into the copper, and then smoothing back to something like maybe 100-grit before using the self-etching primer should be fine (just be wary of the dust). Especially if you don't need to worry about matching sheen, painting over old chrome might be the best bet.

My guess is that even with a badly flaking part, anything still stuck on after you grind off the flakes is probably stuck well enough to stay put. And I'm dubious about the wire wheel - that would get the flakes but probably nothing else.

But, again, if you've got a plater you already like, it might be worth getting a quote on stripping. I was quoted $200 for brake plate, side covers, air boxes, and fork sliders. Depending on the size of your overall budget, that might not be too bad.

Last edited by therabbithole; 10-25-2012 at 09:01 AM.
therabbithole is offline   Reply With Quote Quick reply to this message
Old 10-25-2012, 09:19 AM   #4 (permalink)
Senior Member
SuperSport
Main Motorcycle: 1978 Bonneville T140V
 
Morris the Cat's Avatar
 
Join Date: Feb 2008
Location: Farmington,Connecticut
Posts: 999
Tail light carrier for '78 Bonnie.
Chrome scraped off with a razor knife, prime and painted black.
__________________
http://farm3.staticflickr.com/2880/9419068358_fe3bbd6508_t.jpg
Morris the Cat is offline   Reply With Quote Quick reply to this message
Old 10-25-2012, 09:33 AM   #5 (permalink)
Lifetime Premium
Site Supporter
Formula Extreme
Main Motorcycle: T100R Daytona special
 
Join Date: Mar 2010
Location: The Land of Oz
Posts: 774
Other Motorcycle: Ducati 748/853
Extra Motorcycle: Cagiva Mito
I removed chrome from the bits on the Daytona project bike I wanted to nickel plate by electrolysis
Put the part in a pickle of sulphuric acid/water 50/50 in a plastic bucket, connect the part to a heavy jumper lead and connect to the positive terminal of a 12 volt battery and connect the negative terminal to a piece of lead or steel with a heavy cable and hang it down into the acid.
It will bubble, fiz and give off really nasty fumes which are bad for you.
Remove the part every few minutes, rinse it (preferable with baking soda to neutralise the acid) and inspect it.
I also wire buffed it between dippings to remove the grey deposits.
Don't leave it in the bath too long or you'll bite into the parent metal.

Here's pictures of the rear brake lever being de-chromed and after electroless nickel plating:
Attached Thumbnails
Removing chrome...-p1040208.jpg   Removing chrome...-p1050574.jpg  

Last edited by Old Cafe Racer; 10-25-2012 at 09:38 AM.
Old Cafe Racer is offline   Reply With Quote Quick reply to this message
Old 10-25-2012, 09:40 AM   #6 (permalink)
Senior Member
SuperStock
Main Motorcycle: 1971 Bonneville
 
therabbithole's Avatar
 
Join Date: Nov 2010
Location: Columbus, OH
Posts: 201
Extra Motorcycle: 1970 CL350
Quote:
Originally Posted by Old Cafe Racer View Post
Remove the part every few minutes, rinse it (preferable with baking soda to neutralise the acid) and inspect it.
How long, overall, do you think it takes for this process to remove a standard-thickness plate? I assume it depends on the conductivity of the solution and the size of the bucket (in terms of the amperage the circuit can draw out of the battery) but... a guess?

Also - did you only do steel, or did you do any pot metal or alumin[i]um?
therabbithole is offline   Reply With Quote Quick reply to this message
Old 10-25-2012, 09:44 AM   #7 (permalink)
Lifetime Premium
Site Supporter
Formula Extreme
Main Motorcycle: T100R Daytona special
 
Join Date: Mar 2010
Location: The Land of Oz
Posts: 774
Other Motorcycle: Ducati 748/853
Extra Motorcycle: Cagiva Mito
It depends on how many amps the battery has, how thick the plating is and what condition it's in.
I only have experience with steel parts.
That part took about 20 minutes overall.
.
Old Cafe Racer is offline   Reply With Quote Quick reply to this message
Old 10-25-2012, 10:29 AM   #8 (permalink)
Member
Grand Prix 125
Main Motorcycle: 71 Bonneville
 
Join Date: Aug 2012
Location: Duluth, GA USA
Posts: 35
Quote:
Also - did you only do steel, or did you do any pot metal or alumin[i]um?
You definitely do not want to use hydrochloric or muriatic acid on aluminum. Do a search for "muriatic acid aluminum foil bomb".

-- Jim
Magnum_J is offline   Reply With Quote Quick reply to this message
Old 10-25-2012, 10:43 AM   #9 (permalink)
Senior Member
SuperStock
Main Motorcycle: 1971 Bonneville
 
therabbithole's Avatar
 
Join Date: Nov 2010
Location: Columbus, OH
Posts: 201
Extra Motorcycle: 1970 CL350
how quickly do you think the workplace IT people show up after those search terms hit google?

but in (comparative) seriousness, that was my question - how non-steel parts would hold up in that process. And relatedly (for the chemists and metallurgists out there): would the hydrochloric acid electrolysis make steel weaker, or more brittle? or is it just a surface reaction?

[not in any way to criticize the method - i'm just a little afraid of chemicals and am curious about the breadth of its applicability]

Last edited by therabbithole; 10-25-2012 at 11:33 AM.
therabbithole is offline   Reply With Quote Quick reply to this message
Old 10-25-2012, 10:47 AM   #10 (permalink)
Senior Member
Team Owner
Main Motorcycle: The one between my legs
 
Snakeoil's Avatar
 
Join Date: Feb 2009
Location: Upstate NY
Posts: 5,958
Other Motorcycle: A few
Extra Motorcycle: Yes
I've painted a few chromed parts over the years and used a similar technique to what rabbithole described. I sanded the chome to give the paint something to bite into, primed with a heavy coat of primer, wet sanded smooth and painted over that. Parts came out fine and held up well.

If you think about it, BSA tanks were all painted over chrome and you don't see many of them with peeling paint. Same for older Guzzi's.

regards,
Rob
Snakeoil is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Triumph Forum: Triumph Rat Motorcycle Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter your valid email address, that can receive an automated confirmation message. Otherwise, you won't be able to gain full access.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Chrome Removing Stevelprivett Hinckley Classic Triples 2 09-18-2011 03:29 PM
Removing rust on chrome marsza Maintenance & Workshop Talk 16 03-27-2011 10:56 PM
removing chrome? damonallen Classic, Vintage & Veteran 1 09-25-2010 04:32 PM
Removing chrome from pipes Granitsky Twins Technical Talk 12 12-11-2006 02:05 AM
Removing topical rust from chrome evilfunkgenius Twins Talk 15 07-31-2005 01:49 AM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 11:34 AM.



Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Motorcycle News, Videos and Reviews
Honda Grom Forum Harley Davidson Forum Honda 600RR Kawasaki Forum Yamaha R6 Forum Yamaha FZ-09 Forum
1199 Panigale Forum Roadglide Forum Honda CBR1000 Forum Vulcan Forum Yamaha R1 Forum Yamaha R3 Forum
Ducati Monster Forum Harley Forums Honda CBR250R Forum ZX10R Forum Star Raider Forum Yamaha Viking Forum
Suzuki GSXR Forum V-Rod Forums Honda Shadow Forum Kawasaki Motorcycle Forum Star Warrior Forum KTM Duke 390 Forum
SV650 Forum BMW S1000RR Forum Honda Fury Forum Kawasaki Versys Forum Drag Racing Forum Ducati 899 Panigale Forum
Suzuki V-Strom BMW K1600 Triumph Forum Victory Forums Sportbikes BMW NineT Forum
Volusia Forum BMW F800 Forum Triumph 675 Forum MV Agusta Forum HD Street Forum Suzuki GW250 Forum
Yamaha Motorcycles Victory Gunner Forum Honda Vultus Forum HD LiveWire Forum Ninja H2 Forum

Garage Plus vBulletin Plugins by Drive Thru Online, Inc.