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Fender stays from bicycle forks

Discussion in 'The Hokey Ass Message Board' started by blackjack, Jun 13, 2010.

  1. I plan to run a set of Mark Bull's excellent quality cycle wings on my Modified (I know that it's easier these days to run open wheels in the UK but I'm going to take it France and I can do without the h***le from the French Police).

    I've been thinking about how to do the fender stays and I think that heavy round bar or strap can look a little agricultural - OK if you like that look or are going to leave the cycle wings off more than they're on - but I'm looking for something a little sleeker.

    I'd seen some references to Aussie rodders using bicycle forks but not seen any photos. Nevertheless I decided to give it a try. I thought that the best sort of forks would be from an old sit up and beg Raleigh as they'd be more substantial. I found someone dealing in vintage bicycle parts on eBay and bought 2 pairs of forks for £10 inc p&p. Doesn't matter if they aren't both the same as you will split the blades.

    They arrived yesterday and they seem absolutely ideal - the material is thick and the curve and taper of the forks is very elegant. The fork blades themselves are oval in cross section but even that is complex as they are rounded on the outside and flat on the side that goes next to the wheel.

    I've laid them out with the mudguard so you can get an idea of what they'll look like. I will need to make a fixing point at the wide end, a lug in the middle for a second bolt and weld an appropriately shaped length of strap to the drop out to bolt on the fender.

    I'll start in on them tomorrow and post pics.

    [​IMG]
     
  2. The37Kid
    Joined: Apr 30, 2004
    Posts: 32,495

    The37Kid
    ALLIANCE MEMBER

    Someone ued rifle barrels and i thought they looked great, nice taper. Study fome Bugatti GP cars with wings for ideas.
     
  3. striper
    Joined: Mar 22, 2005
    Posts: 4,498

    striper
    Member

    Nice idea...I'm watching
     
  4. general gow
    Joined: Feb 5, 2003
    Posts: 6,472

    general gow
    MODERATOR
    Staff Member

    hmm. very interesting. looking forward to the progress.
     
  5. butch27
    Joined: Dec 10, 2004
    Posts: 2,846

    butch27
    Member

    That's just cool.
     
  6. zzford
    Joined: May 5, 2005
    Posts: 1,822

    zzford
    Member

    Don't you guys over there have any rebar?
     
  7. bct
    Joined: Apr 4, 2005
    Posts: 3,193

    bct
    Member

    they look ideal....nice curve to them .....the fat end on the backers has enough depth for a good bushing ....they should work well and be reliable
     
  8. That's what I was thinking - if I make a shoulder on the bushing I can then space it off as needs be... I'll probably link the two struts with a curved length of strap.

    Have you been reading those tech tips in Ol Skool Rods? If I used thin rebar I could do it in a spider web stylee - I'll just see if American Chopper is on so I can pick up some tips on that. Or maybe email Paul Jnr direct...... ;-)
     
  9. Kevin Lee
    Joined: Nov 12, 2001
    Posts: 7,675

    Kevin Lee
    Super Moderator
    Staff Member

    Good call. Bicycle forks are plenty strong and the material is light so you won't have as much weight trying to tear the mounts off when it vibrates. Something to think about: Decent forks are chromoly so might factor that into how you decide to weld everything up.
     
  10. zzford
    Joined: May 5, 2005
    Posts: 1,822

    zzford
    Member

    Don't forget the Maltese crosses.
     
  11. Yes - that's what I thought. I think these are 1940's or earlier so unlikely to be chromoly. They are certainly a much heavier gauge than modern bicycle tubing.
     
  12. Finally got around to putting this idea into practice - a newborn, another project and 6 months in hospital will slow you down....

    Just finished the front drivers side fender stay - seven more to go!! I've just started working full time on the Modified so hoping to see some real progress now.

    The fasteners will be changed for something more in keeping and I will probably link the upper and lower stays using 5mm round bar. Fender will sit straight when the lower stay is done and it is all bolted up.

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    To the guy who suggested rebar and maltese crosses - sorry, it hasn't turned out like you were hoping....
     
    Last edited: Dec 9, 2012
  13. stealing this idea for sure. i even got a bunch of old bike forks lying around in my shed;)
     
  14. Feel free - I'll post some how to pictures when I do the next ones.

    What you have to watch out for is that the forks are usually brazed into the crown - you need to cut that bit off because you can't weld stuff that's previously been brazed (not easily anyway). You can re-braze it though.
     
  15. Don's Hot Rods
    Joined: Oct 7, 2005
    Posts: 8,319

    Don's Hot Rods
    Member
    from florida

    That looks so good it almost makes a person want to run fenders. :) Smart idea.

    Don
     
  16. Finished the drivers side today;

    [​IMG]
    Couldn't resist shooting some primer on to see what it'll look like in paint.

    [​IMG]
    Going to paint the drums silver so I can pretend they're Alfins.

    [​IMG]
    Front view - note the scoops.

    [​IMG]
    Side view - sort of... Not much room in the workshop

    [​IMG]
    Sits nice and close to the Deluxe Champions.

    [​IMG]
    Sits nice and straight - more by luck than design ;-)
     
    Last edited: Dec 9, 2012
  17. Rickybop
    Joined: May 23, 2008
    Posts: 10,697

    Rickybop
    Member

    REALLY good idea. Looks great...better than round tubing, and much stronger and less flexy than flat stock. I happen to like the "cycle" style fenders made from vintage spare tire rings...at least on the front.
     
  18. dad-bud
    Joined: Aug 22, 2009
    Posts: 3,884

    dad-bud
    Member

    Great idea, but that is some serious toe-in you are runnin' there!
    That's gonna drive like a *****!!
    Yehaaaaa!
     
  19. It's Ackermann - the other wheel is dead straight ;-)

    I've got everything disconnected so I could have the fender stays, wheels and backing plate on and off easily. Must have ***embled and dis***embled 50 times getting it all to sit in the right places.
     
  20. Oilcan Harry
    Joined: Mar 3, 2001
    Posts: 906

    Oilcan Harry
    Member
    from INDY

    Great idea! Good work.
     
  21. F&J
    Joined: Apr 5, 2007
    Posts: 13,291

    F&J
    Member

    I saw so many broken brackets and chunks missing from backing plates, back in the 60s.


    I honestly think the drilled outer edges of the plates will make it crack even sooner. Just keep an eye on it, because I'd be shocked if it never cracks.

    But they do look nice, and fit sweet :)
     
  22. USA Tires Sign Joe
    Joined: Aug 13, 2006
    Posts: 1,072

    USA Tires Sign Joe
    Member
    from Western NJ

    Great idea! Looks very sturdy. If it helps anyone else having the same idea I have buckets of old forks I have no use for. Most are forged with flat blades. PM or e-mail me.
     
  23. Atwater Mike
    Joined: May 31, 2002
    Posts: 11,618

    Atwater Mike
    Member

    It's work worth doing. Look at the result!
    I especially like the transition from the fork tubing to the cantilever-shaped flat over the tread.
    Aesthetics abound! (Ackermann excessive) chuckle optional...
     
  24. 49ratfink
    Joined: Feb 8, 2004
    Posts: 24,888

    49ratfink
    Member
    from California

    when I read "bicycle forks" I pictured the old Schwinn style with the flat blades rather than tube forks.
     
  25. falcongeorge
    Joined: Aug 26, 2010
    Posts: 18,339

    falcongeorge
    Member
    from BC

    Very cool. I have cycle fenders in my future, these look really swoopy. I'll also be ripping this idea off, for sure. Nicest looking stays I have seen in a while.
     
  26. falcongeorge
    Joined: Aug 26, 2010
    Posts: 18,339

    falcongeorge
    Member
    from BC

    Just noticed the air scoops on the backing plates as well. Have you been reading my mind, or have I been reading yours. NICE!
     
  27. falcongeorge
    Joined: Aug 26, 2010
    Posts: 18,339

    falcongeorge
    Member
    from BC

    Shut him up in a hurry.
     
    Last edited: Sep 12, 2012
  28. I need to drill a few more holes behind them now that everything is positioned.
     
  29. Not got a lot of choice about adding the brackets - got to run fenders over here. In the UK people run fenderless and take a chance. Many get away with it or just get a small fine. I want to take the car to Le Mans and the French police will confi****e a fenderless car if they want to.

    The backing plates are not rare parts so I can keep an eye out for cracks and remake them if necessary. I'm wondering if it would be worth de-brittling these parts by heating to 220c for 3 hours (I think that's right - would appreciate advice from any expert on this process).
     
  30. F&J
    Joined: Apr 5, 2007
    Posts: 13,291

    F&J
    Member


    I grew up when fenders were a must have, as far as the law, so I love them. Especially the spare tire rings like yours, with bobbed stock rears.

    I just try to read all the styles of brackets, but it seems like we are fighting physics :D

    I did recently have some front and rear backing plates that came off a 50s built 34 coupe and big chunks were missing on the edges. But those were welded on. I even thought some sort of thin rubber washers might help, but it seems like you "fix" one area, and it cracks someplace else.

    Like I say, I love the look. I would not build a fenderless car, because I never saw them here, back then, and it does not look familiar to me :cool:


    Ha, one local old time hamber has a 50s built A roaster, and one spare-tire type rear fender broke part-way off, going over a very long busy city bridge. He said it got hung up under the tire, so as he could not stop there, he had to keep driving, spinning and s****ing, till he could pull over in a safe spot.

    he later took the other rear off when at home.

    He still is missing his rears, but the fronts seem OK.
     

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