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Fork Questions…

Started by AAAltered, February 04, 2025, 01:20:33 PM

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AAAltered

I have rolled the RD200 from the shed to prepare her to offer her for sale.

When I bought it in 2016 it had fork gators, which are obviously not original.  They looked fine, but while going over it I realized they are torn.  That sent me down the path of pulling the forks off today to examine the tubes, seals, etc.

There is some pitting on the tubes, so my questions are:
- Is there a way to clean up minor pitting?  None of it is in the seal travel area.
- Would you source new gators to cover up the pitting?  Not to hide from a buyer, but for asthetics?
- I can source new seals and dust covers.  There are no dust covers now.  You think I'm better off with original dust covers or gators?
- Can I pull the seals without full disassembly of the forks?  The forks are now off the bike but internals are intact.  I see a retaining ring which I'm pretty sure I can get off to pull the seals.

Opinions welcomed!

Thanks
Ed




1971 R5
1976 RD200
2022 Moto Guzzi V7 850 Special

m in sc

not really. thats into the chrome.  :huh:

BlueR32

Aside from the chrome pitting, personally I would lose the gaiters and go with dust covers per original 1976. By the way if you're interested in a sale as-is, please send me a PM to discuss.

m in sc

agreed gators def need to go.

if the forks werent leaking, just turn the pitted side around back...  :whistle:

irk_miller

If they're mine, I am working through a few grades of steel wool, then polishing.  You can't repair the damaged chrome, but you can make them significantly better and you'll still be removing the rust and all of the texture.  Think of it as preservation.  They'll be plenty pretty for a daily rider and ensure a better offer price on sale.

axldk6

I have about the same problem ( pitted tubes) . I don't think mine are going to clean up that good, and right seal is leaking now that I have it moving under own power. I saw where during a rebuild ( youtube) that theirs were turned down in a lath. wonder how much you can get by with? from what I see new tubes are pricey.
been wrenching for many years, still need help some times
1974 RD 350A ( full project bike)
2002 Kawasaki  ZRX 1200R  ( 99% complete)

AAAltered

In my case I tried some steel wool.  From some scratches, I could see that a PO tried also.  I have heard of the lathe thing when I was building my R5.  I was fortunate to find NOS tubes for it.
I haven't found any RD200 tubes via a part number search. 
Like Mark suggested, I'll just reassemble with the worst sides 'in'.
1971 R5
1976 RD200
2022 Moto Guzzi V7 850 Special

1976RD400C

New 350 and 400 fork tubes seem reasonable. $150-$200 on Ebay.
'76 RD400 green  '76 RD400 red   '84 RZ350

m in sc

I fought this on the tzr thru 4 sets of fork seals.

AAAltered

Correction.  Franks DOES list 76 RD200 on his site...
1971 R5
1976 RD200
2022 Moto Guzzi V7 850 Special

m in sc

that might be the only feasible option. I've dried the jb weld in the pits, silver solder, etc. Just didn't work. I mean, best of luck w that but I think it's franks time

RDnuTZ

are you guys using the term "pits" generically to describe both raised up rust blisters in the hard chrome and also little craters/scratches/dings in the tubes? I've had some success treating both using different techniques.
1987 TZR250R Restricted Japan Domestic market bike (Project)
1977 RD400 (Project)
1974 RD350 (2) (Projects)
1973 RD250 (Project)
2022 Beta 300 X-Trainer, Yamaha Vintage MX, YZ (18)

AAAltered

In my case I can barely feel it, mostly with my fingernail.  Almost just a cosmetic problem.  The area doesn't cross the seal...

1971 R5
1976 RD200
2022 Moto Guzzi V7 850 Special

m in sc

if its not on contact w the seal, hit it with silver paint pen, wipe it down and turn em to the back.

axldk6

think I will try the ( very fine , 0004 ) steel wool and turn them backwards with new seals and covers for now. thanks for the tip on that. suspension is next on my check list any how.  :thumbs:
been wrenching for many years, still need help some times
1974 RD 350A ( full project bike)
2002 Kawasaki  ZRX 1200R  ( 99% complete)