Advertise on Bikeforums.net



User Tag List

Results 1 to 6 of 6
  1. #1
    Senior Member
    Join Date
    Jun 2010
    Location
    Riverside, CA
    My Bikes
    Dahon Speed TR
    Posts
    942
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Dahon Speed TR, Big Apple, Fender rub.

    Been enjoying the Speed TR I received a month and half ago greatly. Put roughly 300 miles on it at this point and can definitely say I really enjoy the bicycle!
    There were some learning curve on setting up bike tuned, adjusted well to my need but it was definitely good experience over all and enjoyable one. There is one minor complaint I have on Speed TR right now which I would appreciate some tips/ideas/or just straight working solution.

    Over the time, I noticed that when I hold only one handle at speed over 10mph or going over 25mph and hit irregularities of road I kept hearing squeaking noise. I've checked all the bolts and nuts and tightened them to specified torque level, etc and this still happened.

    After some careful inspection and looking at it I found the problem to be when the vibration is passed to front wheel fender and the wires that holds fender in place slightly rubs against big apple tire when I am going over not so smooth road. (metal vs tire squeak...)

    I am pretty sure this isn't issue with narrower tires (hence probably reason I can't find solution to this through google... think TR is the only one with this fender and big apple combo stock from dahon). I can think of one solution for this which is to make the wire more rigid somehow... or replace fender with something else that doesn't do this...
    Just not sure how to go about this either way. How to make it more rigid, where can I find 20 inch fender that works well with it, or just some other way around...

    There is 2mm gap between closest part of wall of tire to this wire (1/12th inch or about).
    Here is the picture of problematic area.
    FrontFender..jpg

    Thank you!

  2. #2
    Senior Member
    Join Date
    Nov 2009
    Posts
    175
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Is it possible to use a couple small washers (where the brace attaches to the fender) between the fender & Brace? Looks like it would create a wider gap between the tire and the Brace. If this is possible, it should move the Chrome Brace approx 1/4" away from the tire, thereby removing the contact area of the brace. Easy to see that tire wear mark where the brace is rubbing the tire when it makes contact. With this fix, you would have to use a longer bolt as well. Maybe a 25 Cent fix. You may have to slightly bend the brace away from the fender a 1/4"(approx) as well, otherwise it may pull the opposing brace and create a rub on the other side. Looking at the Front of the Brace where it attaches to the fork, you likewise may want to add a few washers between the fork and the brace, moving this part of the fork out and away from the bike. Not sure it you need this at this mounting point but check it out as well. If you decide to add washers in this area also, a slightly longer bolt would be needed as well. Seems like a problem with an easy solution. I'm sure other posters have great solutions as well. This Fix worked well for me. I fixed a bike (with a similiar problem)in the past this way with the same remedy. On my problem, in addition, I also had to remove 1/4" of the fender sides under the fork area to custom fit my SAS fenders with my dremel moto-tool and afterwards, the fix wasn't visible. It may be you need to add washers to the opposite side braces as well to prevent pulling the brace too far to one side creating a new rub. You will need to play this one bit by bit until you find the correct spacing. At any rate, other then maybe an hour or so of your time, its a cheapo repair.
    Last edited by miamimike; 08-07-10 at 06:31 PM. Reason: add

  3. #3
    cyclopath vik's Avatar
    Join Date
    Apr 2006
    Location
    Victoria, BC
    My Bikes
    Surly Krampus, Surly Straggler, Pivot Mach 6, Bike Friday Tikit, Bike Friday Tandem, Santa Cruz Nomad
    Posts
    5,235
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Fiddling with fenders is a necessity from time to time. Two options come to mind based on your photo:

    1) pull left fender stay out of the plastic cap at the fender slightly which should move the whole fender slightly to right and give you the req'd clearance...if there is room you can push the right fender strut into the plastic cap on that side to move the fender over as well.

    2) pull the right fender strut completely out of the plastic cap at the fender and bend outwards a bit at a time, reinstall and repeat until you move the fender over enough to get the req'd clearance.
    safe riding - Vik
    VikApproved

  4. #4
    Senior Member snafu21's Avatar
    Join Date
    May 2008
    Location
    The Mangroves, UK
    My Bikes
    None.
    Posts
    1,896
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    .... but unscrew the plastic cap fixing screws a little, first.
    - every mile of road has two miles of ditch -

  5. #5
    Senior Member
    Join Date
    Jun 2010
    Location
    Riverside, CA
    My Bikes
    Dahon Speed TR
    Posts
    942
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thank you for some idea and suggestions!
    I've been twiddling and bending it back slightly frequently (except portion of folded handle bar touches the area and gets shoved back in the way I transport the bike (everyday, 2-4 times in trunk of my coupe). Yeah, I use it as multi mode commute.
    That washer idea indeed was helpful! Here is what I did after wonderful suggestions you guys and ladies gave.
    1) Washer... I loved the idea and did use some to make it reach a little further out.
    2) The bending idea got me thinking and I made bend to follow the shape of wheel a little. Now I have 1/4" space on wheel and the wire while folded portion of handlebar doesn't even touch the wire. (also had to change the angle of shifter so it doesn't interfere as much when folded).
    After all the change, the squeak from rubbing of wire to wheel got reduced drastically (took it out for quick 12 mile spin today morning going up to 32mph at one point). Maybe couple of rub sound total instead of maybe hundred of times when I am going over blocks on bike route for 4 miles downhill I have here.
    Problem solved with thanks to people here!

  6. #6
    Each Drop of Sweat Counts
    Join Date
    Nov 2007
    Location
    Iwakuni Japan
    My Bikes
    MASI Speciale Road, Specialized Rockhopper 29'er, Dahon Jetstream XP, Dahon Speed P8, Dahon Speed TR, Dahon Speed TT, Ignio Folding bike
    Posts
    825
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I have the exact same issue on my Speed P8. Go to one hand and I get the squeak from the front fender. At first it bugged me to death thinking something was wrong but once I figured out what it was and I know nothing is going to fall apart I don't let it bother me. I'm pretty much two hands on all the time anyway so it doesn't happen much. One day I'll fool with it.

    Oddly enough my Speed TR does not do this.

    John

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •