View Poll Results: For yor manual rigid frame chair, does your fork assembly flutter at 15 mph?

Voters
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  • yes, but not so bad that it is unsafe

    1 2.70%
  • yes, and it is bad enough to be unsafe

    7 18.92%
  • no

    29 78.38%
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Thread: Danger: TiLite ZR2 front wheel assembly flutters and locks up

  1. #91
    Senior Member Axle's Avatar
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    Thanks for offering to help. That is very thoughtful. 28 years in a chair and never had this problem before. Still learning.

  2. #92
    Senior Member Axle's Avatar
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    OK. I have decided to upgrade. I guess you're right that just because I got away with it before does not mean it was good practice.

  3. #93
    Quote Originally Posted by Axle View Post
    OK. I have decided to upgrade. I guess you're right that just because I got away with it before does not mean it was good practice.
    Good to hear!

    I was afraid it was going to take us over 100 posts to get there!


  4. #94
    Senior Member ~Lin's Avatar
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    Quote Originally Posted by jschism View Post
    maybe you could discuss this matter with member:
    rlmtrhmiles....he knows all
    http://sci.rutgers.edu/forum/member.php?u=180055
    Board Member of Assistance Dog Advocacy Project working in Education. Feel free to ask me any service dog questions!

    I am not paralyzed. I have a genetic connective tissue disorder with neuro complications and a movement disorder.

  5. #95
    Senior Member Axle's Avatar
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    I've decided to reconsider for 2 more posts (just kidding).

    NoNoise, I will do the test. I know you were very interested and helpful. It would be good to close the loop or else I would always wonder.

  6. #96
    Flutter issue aside, I still have concerns that the chair could be an endo risk and strongly recommend going with 4x1.5 FrogLegs aluminum hub soft rolls.

    My ZRc is a 17x16 85 degree frame with the same diameter caster and 559 rear wheels. My frame is still about an inch longer than yours. If the differences in seat dump and cushion are factored in, I would be willing to bet my center of mass is much lower. Even though my 4" rollerblades didn't flutter, it didn't take much of a sidewalk crack for my chair to endo if I wasn't leaning way back or popping a wheelie.

    The 4x1.5 FLAHSR will have less chance of planting on a sidewalk crack, but you will have to keep your front end light (without being excessively rear tippy).

    You might be fine, but I'd definitely recommend being careful until you find out the limits of your specific configuration.


  7. #97
    Quote Originally Posted by SCI_OTR View Post
    Good to hear!

    I was afraid it was going to take us over 100 posts to get there!
    Not trying to pop your bubble, but there are two threads.

    I just looked at the brand new 8 inch pneumatic casters I bought to replace the ancient ones for my gardening wheelchair. You guessed it...Pr1mo. I may take the tire and tube off them and put them on the old casters.
    I have had periodic paralysis all my life. I lost my ability to walk in 2011 beginning with a spinal block, which was used for a hip fracture caused by periodic paralysis.

  8. #98
    I find it interesting that with 21 members responding to your poll, people are either having enough caster flutter to feel it is a safety issue or they are having no flutter at all.


  9. #99
    Senior Member Axle's Avatar
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    In a way it makes sense. Because even small flutter will grow into large flutter if you don't slow down.

  10. #100
    Senior Member Axle's Avatar
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    hahaha. Right after we say this, someone picks the third choice.

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