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How do You make the brake cylinder reservoir look new?
- Thread starter Philodoxo
- Start date
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I think once the plastic has turned you are stuck with that. Maybe try to sand off some to get a cleaner look?
Specdog
XS400 Addict
I had a friend who had the same problem. What I do remember is he ended up with a warped MC after trying to clean it. He may have put it in the dishwasher, but I can't recall exactly what he did. Perhaps knowing what the material is would help.
Tombo
XS400 Addict
I would think soda blast would at least I help
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its turned because the plastic has absorbed UV and brake fluid.
there's no way it will come up.
Yam don't list these as new either.
there's no way it will come up.
Yam don't list these as new either.
They used this style of reservoir on a lot of there bikes at the time. I would look at ebay under yamaha brake parts. I have seen them come up new from time to time. Your best bet is to get a new aftermarket complete set up like one from mikesxs.
I've been hoping to do the same thing to the cylinder on my XS360. It wasn't quite as yellow as yours but still pretty discolored from the sun.
UV damage can be reversed with hydrogen peroxide. Not the pharmacy strength, the concentrated stuff. I have not tried it myself. Without being sure that hydrogen peroxide would not damage the master cylinder I wouldn't want to take the risk.
This article has details: http://www.exisle.net/mb/index.php?...g-plastic-the-stain-isnt-permanent-after-all/
I might be imagining it but after soaking for a day each in evapo-rust and clean brake fluid I think some of the yellowing has been reduced. Enough that I don't think the hydrogen peroxide will be necessary.
If it is still functional I'd say keep using it. There are a few available on ebay but in no better condition than yours. Replacement units are available but you would not have the original appearance.
UV damage can be reversed with hydrogen peroxide. Not the pharmacy strength, the concentrated stuff. I have not tried it myself. Without being sure that hydrogen peroxide would not damage the master cylinder I wouldn't want to take the risk.
This article has details: http://www.exisle.net/mb/index.php?...g-plastic-the-stain-isnt-permanent-after-all/
I might be imagining it but after soaking for a day each in evapo-rust and clean brake fluid I think some of the yellowing has been reduced. Enough that I don't think the hydrogen peroxide will be necessary.
If it is still functional I'd say keep using it. There are a few available on ebay but in no better condition than yours. Replacement units are available but you would not have the original appearance.
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If someone can determine what kind of plastic the originals were made of back in 1976, and they won't be adversely affected, I'll do it.
After just rebuilding the master cylinder and getting it functional again I don't want to risk losing the cylinder itself.
As an alternative, it might be possible to pull a cast of the original and make a new one.
After just rebuilding the master cylinder and getting it functional again I don't want to risk losing the cylinder itself.
As an alternative, it might be possible to pull a cast of the original and make a new one.
iamunique127
XS360C Owner
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