Author Topic: 2001 EV-Black powder on rear rim  (Read 1592 times)

Offline drburt

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2001 EV-Black powder on rear rim
« on: May 05, 2018, 07:46:09 PM »
Black powder on rear rim and spokes.
Non greasy. Dry.
What is it?
Soot from exhaust (doesn't smoke)?
Rubber from tire?
Inquiring mind wants to know.
Thanks!
Brent

Offline fotoguzzi

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Re: 2001 EV-Black powder on rear rim
« Reply #1 on: May 05, 2018, 07:52:38 PM »
Brake dust. Do you use the foot brake a lot?
MINNEAPOLIS, MN

Offline drburt

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Re: 2001 EV-Black powder on rear rim
« Reply #2 on: May 05, 2018, 08:22:50 PM »
I'm not sure what a lot would be.
I don't ride the brake.
I live in the flat lands of the Panhandle of Texas with minimal curved roads.
I do ride it a bit in town.
I use it more than the front brake to avoid front end dive at stops.
The powder seemed to start after I began to rev it higher (flog?) after I got used to the bike .
Of course, that would take a whole lot of funky turbulence for exhaust soot to make its way forward to the wheel!
Thanks,
Brent
« Last Edit: May 05, 2018, 08:39:55 PM by drburt »

Offline Madtownguzzi

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Re: 2001 EV-Black powder on rear rim
« Reply #3 on: May 05, 2018, 08:52:59 PM »
Cush drive rubber might be dried up and disintegrating
Randy S.
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Madison, WI

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Re: 2001 EV-Black powder on rear rim
« Reply #3 on: May 05, 2018, 08:52:59 PM »

Online pehayes

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Re: 2001 EV-Black powder on rear rim
« Reply #4 on: May 05, 2018, 10:16:11 PM »
If there were enough tire rubbing to create a dust coating, you would likely see a similar loss of paint at the contact point on the inner face of the swingarm and/or driveshaft tubes.  Have you removed the wheel for inspection?  Any degredation to the tire sidewall where it nears the swingarm tubes?  Did you recently boost your tire pressure for some reason?

Patrick Hayes
Fremont CA

Online Tom H

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Re: 2001 EV-Black powder on rear rim
« Reply #5 on: May 05, 2018, 10:45:30 PM »
My '04 gets black dust on both front and rear. From what I believe it to be brake dust. If I clean the rim to shiny chrome, it comes back in a month or so of riding the longer I go without cleaning, the more it looks almost like a flat black powder coat. Actually, thought about paint or powder to make it look like that all the time!

Tom
2004 Cali EV Touring
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Offline drburt

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Re: 2001 EV-Black powder on rear rim
« Reply #6 on: May 05, 2018, 11:03:25 PM »
All possible causes.
Even if it's a natural sign of brake use I need to replace rear brake pads anyway.
Cush rubber an interesting thought. I'll check them out when I remove the rear wheel for inspection.
Tire rub was one of my first thoughts.
Looking at the tire I don't see any wear on the sides where it could be rubbing the swingarm or the ridiculously close center stand.
I'll check the possible rub spots when I remove the wheel.
No increase in tire pressure.
I do have a bit on the front wheel also, but nothing like the rear.
Hmmmmm...
Thanks for the input guys.
Brent

Offline fatbob

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Re: 2001 EV-Black powder on rear rim
« Reply #7 on: May 05, 2018, 11:58:29 PM »
It’s mostly tire wear, and also just road scum.   That’s why the rear wheel gets more of it than the front.  Road scum gets kicked up by the front tire and accumulates on the rear.  It’s not brake dust. 
Bob Lower

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Online Tom H

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Re: 2001 EV-Black powder on rear rim
« Reply #8 on: May 06, 2018, 12:06:59 AM »
From the year, I would guess that you have linked brakes like my '04 EV T. I changed to shorter shock and messed up the brake bias valve due to the shorter shock. Went through a rear set of pads fast compared to front. Did you put shorter shock on?

Tom
2004 Cali EV Touring
1972 Eldo
1970 Ambo V1000
1973 R75/5 SWB with Toaster
2007 HD Street Bob
1953 Triumph 6T (one day it will be on the road!)

Offline drburt

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Re: 2001 EV-Black powder on rear rim
« Reply #9 on: May 06, 2018, 07:45:48 PM »
I bought the bike used and I don't know if the shocks are stock or not.
Not sure how to tell.
I'll check them out and see what I can tell.
Thanks,
Brent

Online Mr Revhead

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Re: 2001 EV-Black powder on rear rim
« Reply #10 on: May 07, 2018, 02:30:52 AM »
Those wire wheels look good, but my god they are hard to keep clean! Sounds like brake dust, try and clean it off regularly, it can eat into the chrome.

Offline Vagrant

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Re: 2001 EV-Black powder on rear rim
« Reply #11 on: May 08, 2018, 07:45:08 AM »
It�s mostly tire wear, and also just road scum.   That�s why the rear wheel gets more of it than the front.  Road scum gets kicked up by the front tire and accumulates on the rear.  It�s not brake dust.

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