Rebuilding the rear shock

G

Gomes-nz

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Apr 4, 2002

36

0

• Feb 25, 2003

• #1

I believe that this is the first re-build that the shock has had (1991 KDX200). There was very little nitrogen in the shock, I suspect that I will notice the difference after the rebuild.
Question: should I use a new clip on the shock body ??
2nd Question: has anyone ever repainted the spring. Do they powered coat it ??? what is the cost normally.

tks Darrin
1991 KDX200
1999 DR650

 

David Trustrum

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Jan 25, 2001

1,396

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• Feb 25, 2003

• #2

Powder coating a spring is probably not a good idea as the heat from baking it may temper the spring.

 

J

JasonWho

Member

Apr 10, 2002

2,109

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• Feb 26, 2003

• #3

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Last edited: Sep 18, 2004

M

MX175

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Aug 20, 2002

187

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• Feb 26, 2003

• #4

As an engineer, 385 degrees should have no effect on spring steel. The spring is affected by the elastic modulus of steel and is essentially independent of hardness and heat treatment. Steel can be embrittled at higher temperatures (600 to 1000 degrees F). There are also many types of aluminum that will be embrittled at 385F. The spring is not aluminum so you should be good. But, I know powdercoat is a great paint but can it stand up to the flexing it will get on the spring. There is a lot of movement in that spring. Will it crack the powdercoat?

 

David Trustrum

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Jan 25, 2001

1,396

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• Feb 26, 2003

• #5

Ok good to know, though I believe some powders are put on at different heats, the temp extent I don’t know.

Someone had warned me about possible aluminium embrittlement of powder coated ally wheels (after I had some done of course) & another mentioned it when I was going to do my spring so I got it painted in 2 pack.

 

G

Gomes-nz

~SPONSOR~

Apr 4, 2002

36

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• Feb 26, 2003

• Thread starter
• #6

tks for your comments. I will ask the painters what they would recommend as a good paint to apply.

 

jaguar

~SPONSOR~

Jul 29, 2000

1,508

82

South America

• Feb 26, 2003

• #7

Did you already do the shock rebuild? If so, then what was worn out? I'll probably have to rebuild mine soon. thanks

 

G

gn83tm

Member

Dec 30, 2002

135

0

• Feb 26, 2003

• #8

Powdercoating is the prefered finish for most automotive racing springs and it looks like that is also what is on most bike springs. You can't beat it for longevity.

 

J

JasonWho

Member

Apr 10, 2002

2,109

0

• Feb 27, 2003

• #9

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Last edited: Sep 18, 2004