Subject: RE: powder coating jugs
Author: AJ Huff
Date: May 28, 2005, 5:15 AM
Post ID: 1718938764
Good info Ross. I would have thought they could mask the chrome but
maybe not. If they could, I think it would be a great way to go. Maybe
take your info and ask the shop. Wasn't my question, but thanks for the
great insight. Do you work in that field?
-AJ
Ross wrote:
Anodizing could represent a problem for the cylinders. It is done in a sulfuric acid bath, which would remove the chrome coating. Sand cast aluminum also has to be treated first in a nitric acid and ammonium bifluoride strip (there can be a third component, but I forget what) to remove the silica prior to anodizing. This would also remove the chrome coating. Powdercoating can also represent a problem as the coating is quite thick, 5-7 mils if I remember right. And does not do well in touching up. Another possibility would be Gun Kote in gloss black. While the manufacture recommends anodizing, it isn't absolutely necessary. Without checking, I believe it requires sand blasting at a low psi. After that, baking at 325 deg F for an hour or so. It puts a very thin coating, a seventh or less that of powdercoating. It can be retouched through sanding and reapplication, but you would have to bake again. I did it on my cast iron cylinders, and it is quite tough and very shiny. It is a grey black rather than a blue black. Finally, the British painted their cast iron cylinders, and aluminum also, with very little heat transfer problems. The Brit guys have done extensive oil temperature testing, and there doesn't seem to be a problem. Guzzis do keep their cool quite well v. the vertical twins. Regards, Ross K. Ross Raymond Phoenix, AZ, USA 1971 Ambassador LAPD 1975 Norton Interstate (Nearing completion someday) 1969 Triumph T-100 (Project) 1998 Ariel (after the Sq. 4, not the mermaid) -----Original Message----- From: AJ Huff [mailto:ajh-@earthlink.net] Sent: Friday, May 27, 2005 7:09 PM To: Loopfram-@topica.com Subject: RE: powder coating jugs I would consider anodizing. I'm pretty sure it can be done. Wide selection of colors. More scratch resistant. Advantage of being mostly permanent. Disadvantage of being mostly permanent. An anodizing shop should be able to tell you if you can or not. scott grupe wrote:
AJ Huff '71 Ambassador Three Rivers, MI MGNOC# 19917 |
AJ Huff
'71 Ambassador
Three Rivers, MI
MGNOC# 19917