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  1. #1
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    20" hotrock fork issue

    I recently just bought my son a very lightly used 20" geared hotrock. Bike is in great condition, but it has a dust wiper that won't stay down on the lower fork leg. Has anyone come across this issue and if so how did you solve it? Thanks!

  2. #2
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    Reputation: 9iron's Avatar
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    My son had the same bike. Same issue.
    Clean and lightly lube the stanchions. When they are dirty and sticky, it pulls the dust cover off.
    I applied a little adhesive silicone and let dry overnight. Just a couple drops do the trick.

  3. #3
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    Quote Originally Posted by 9iron View Post
    My son had the same bike. Same issue.
    Clean and lightly lube the stanchions. When they are dirty and sticky, it pulls the dust cover off.
    I applied a little adhesive silicone and let dry overnight. Just a couple drops do the trick.
    Yup, same bike, same issue and same fix


    I don't know why they bother wth these forks. They are sprung too heavy for little kids anyway

  4. #4
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    Same issue but haven't tried fixing it. It's done it since the day we bought it brand new.

  5. #5
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    I figured it must be a common issue, because there was another one on craiglist in real good shape as well with the exact same problem. lol Thanks guys. I'll give the fix a try.

  6. #6
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    coil swap?

    Quote Originally Posted by SRALPH View Post
    ...
    I don't know why they bother with these forks. They are sprung too heavy for little kids anyway
    My daughter's 20" HotRock has the RST 200k fork. She weighs about 50 lbs.

    I agree, the springs are way too stiff.

    Project time ?

    There is an elastomer bumper inside the spring ... Not sure if it's there for rebound or bottom out protection.

    The coil end mounts are threaded into the coil:

    The spring has a yellow mark. Not sure what spring rate this denotes.

    I gotta do more reading on spring rate calculations.

    I did find compression springs at McMaster of course:
    McMaster-Carr

    I'll report back.

  7. #7
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    Kids bikes should just come rigid, my Son's suspension fork is over sprung and overweight and the boots do the same thing. Since his old man is riding full rigid he may just allow me to put a lightweight cro-mo fork on it and drop an extra pound or two off the bike.
    Former bicycle mechanic for 8 years, current soil scientist.

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