Craig D

Don't worry about the heat and a steel frame - very few steel frames are heat treated (none that I know of) and are usually made from a "normalized" steel and, if anything, the powder coat baking would help reduce any heat effected zones created during welding or brazing (which is 1,200, 1,700 or over 2,000 degrees F for silver or bronze brazing and welding). Tool steels are baked at 300-400 F for their heat treat and are more "brittle" than bike frames (higher temps == softer, more ductile/tougher steel).
Craig D

----- Original Message -----
From: Brian Engelen
To: 'Clark Ritchie' ; obra@list.obra.org
Sent: Tuesday, February 07, 2006 2:34 PM
Subject: Re: [OBRA Chat] Help - Rust on my Frame!

I'd do some checking before I powder coated a steel frame. First of all, my only experience is non-bicycle, structural steel frames for machine tools. A lot of heat is needed to get that powder paint to work correctly. Sometimes up to 475 degrees Fahrenheit. It's OK for non-precision soft steel parts. I'm not sure what this will do to a bike frame. My concern is related to heat treatment of the tubing and warping.

Brian

Ron and Dorothy Strasser

I have had two steel frames powdercoated. Both were mountain bikes and have been abused since with what seems no problems. It is a very tough finish that can really take the abuse.
----- Original Message -----
From: Brian Engelen
To: 'Clark Ritchie' ; obra@list.obra.org
Sent: Tuesday, February 07, 2006 2:34 PM
Subject: Re: [OBRA Chat] Help - Rust on my Frame!

I'd do some checking before I powder coated a steel frame. First of all, my only experience is non-bicycle, structural steel frames for machine tools. A lot of heat is needed to get that powder paint to work correctly. Sometimes up to 475 degrees Fahrenheit. It's OK for non-precision soft steel parts. I'm not sure what this will do to a bike frame. My concern is related to heat treatment of the tubing and warping.

Although, my 531 steel Voodoo is powder painted.

Brian

-----Original Message-----
From: obra-bounces@list.obra.org [mailto:obra-bounces@list.obra.org] On Behalf Of Clark Ritchie
Sent: Tuesday, February 07, 2006 1:55 PM
To: obra@list.obra.org
Subject: Re: [OBRA Chat] Help - Rust on my Frame!

Hey Augusto,

I just had a frame stripped and powder coated by Blakely Kustom Koatings in Clackmas and they did a great job. Less than 2-week turnaround. The price was oh-so right, too.

http://blakelykustomkoatings.com

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Brian Engelen

I'd do some checking before I powder coated a steel frame. First of all, my
only experience is non-bicycle, structural steel frames for machine tools.
A lot of heat is needed to get that powder paint to work correctly.
Sometimes up to 475 degrees Fahrenheit. It's OK for non-precision soft
steel parts. I'm not sure what this will do to a bike frame. My concern is
related to heat treatment of the tubing and warping.

Although, my 531 steel Voodoo is powder painted.

Brian

-----Original Message-----
From: obra-bounces@list.obra.org [mailto:obra-bounces@list.obra.org] On
Behalf Of Clark Ritchie
Sent: Tuesday, February 07, 2006 1:55 PM
To: obra@list.obra.org
Subject: Re: [OBRA Chat] Help - Rust on my Frame!

Hey Augusto,

I just had a frame stripped and powder coated by Blakely Kustom Koatings in
Clackmas and they did a great job. Less than 2-week turnaround. The price
was oh-so right, too.

http://blakelykustomkoatings.com

_____

Yahoo!

Mail - Helps protect you from nasty viruses.

Clark Ritchie

Hey Augusto,

I just had a frame stripped and powder coated by Blakely Kustom Koatings in Clackmas and they did a great job. Less than 2-week turnaround. The price was oh-so right, too.

http://blakelykustomkoatings.com




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Augusto Carneiro

Hello folks,

I had the unfortunnate luck of finding a couple of rust spots on my steel
frame. This is not just any frame, its my custom built, 20th anniversary
Torelli frame. It's fairly new (three years old). It has seen some rain, but
I think the culprit was sweat from doing rollers indoors and not having a
sweat guard.

I found a few 'blisters' on the paint of the Top Tube and took it into Bike
Central where they scratched it out and confirmed my fears. They took care
of the localized spot but are recommending a full re-paint of the bike in
case there are rusts in other spots.

Re-painting the whole bike may seem like overkill, but the tubing on this
bike is of a very thin gauge (pretty much as thin as the paint) and any rust
could compromise the strength of the bike - and thus my safety.

Does anyone out there have any experience or recommendations for this? I've
been quoted $700 for the paint job (since it is highly detailed and with
many decals). I was hoping to keep it under $300.

Augusto 'death to rust' Carneiro