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  1. #1
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    1980s Peugeot -> 2-speed city bike (need advice to complete build)

    I've just (nearly) finished a build of an old 1980s Peugeot steel frame and fork into a second bike for riding around town (DC) and fair-weather commuting (about 5 miles). Before building this one I had one bike for longer weekend rides and for daily use, but I got tired of having that one stolen. I hope this one is a less attractive target.

    Pics and details on the build below, but there are two spots where I could use some advice:

    1) I haven't ridden riser bars in a while, so I'm not sure how to adjust them. These (as you can see) have a very slight rise, which I currently have angled up and back at about a 45 degree angle. Is this "right"? Is there a "right" or can I rotate the bars as a first-cut option for sizing my reach and posture? Stupid question, surely. I think the drop bars have gone to my head.

    2) There's very little clearance between the front tire and the front brake. So little that I had to use a 23mm tire (rear is a 30mm cross knobbly since it's what I had around). It works, but if I pick up rocks or the tire swells a lot in the heat, it's going to rub. I already pulled the axle down as far as I'm comfortable in the fork dropout - this helped a little. I don't think I can file down the brake arm in the center as it has an open center - there's not much material there. Do I need some kind of offset bolt? Is this little clearance going to be a problem? Why is this even an issue - the frame was sold with 27" tires, so I should have plenty of room for these 700cs, right?

    Frame: 1980s Peugeot Carbolite 103 steel (maybe a 1984 P6 or P8?)
    Fork: Original (I think) Peugeot cromoly
    Rims: new single wall
    Crankset: Metropolis City 45t
    Rear hub: SRAM Automatix
    Seat: 1980s salvage from parts bin (to minimize attractiveness)
    Seatpost: BMX 22.2 shimmed up with a dremeled 1.8mm shim + 1 layer of Sapporo can to get to ~24.0 funky french diameter (buying a post that fit would have cost more than the frame)
    Brakes: Tektro R580
    Bars/grips/levers: Parts bin or Amazon
    Lights: 3-pack of knockoff chinese froggys (these rock and are <$5 for the set)

    Bike:


    Brake clearance:






    Looking at the pics, I see I can get a little more reach if I turn the saddle clamp around...
    Last edited by richarnd; 05-26-13 at 08:42 AM.

  2. #2
    PatronSaintOfDiscBrakes dynaryder's Avatar
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    I think the brake issue is that brake. From what I can tell from the pics,the fork seems ok,it's just the front arm hangs down too far. I'm guessing this bike originally came with centerpulls which had more clearance. I'd def suggest getting another brake rather than doing something sketchy like not having the wheel all the way in the dropout. Maybe source an old centerpull at one of the local co-ops.

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  3. #3
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    Quote Originally Posted by dynaryder View Post
    I think the brake issue is that brake. From what I can tell from the pics,the fork seems ok,it's just the front arm hangs down too far. I'm guessing this bike originally came with centerpulls which had more clearance. I'd def suggest getting another brake rather than doing something sketchy like not having the wheel all the way in the dropout. Maybe source an old centerpull at one of the local co-ops.

    Hmm. I suspect you're right that it's the particular brakes I'm using. But I don't think the bike was originally sold with centerpull (canti) brakes - there aren't any bosses for them on the fork. Maybe you mean single pivot caliper brakes? Not sure if they would have more clearance, and I certainly don't know what would have come on the bike originally.

    Anyone have a good rec for caliper brakes with good clearance (not more/less reach)? Either traditional nutted mounting or recessed works.

  4. #4
    PatronSaintOfDiscBrakes dynaryder's Avatar
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    This is a centerpull:
    18240.jpg

    They were pretty common on road bikes like that one. Any of the local co-ops would have them laying around. You could also try a long-reach caliper. Sorry,can't name a specific one,discs are my bag.

    C'dale BBU('05 and '09)/Super Six/Hooligan8and 3,Kona Dew Deluxe,Novara Buzz/Safari,Surly Big Dummy,Marin Pt Reyes,Giant Defy 1,Schwinn DBX SuperSport/Qualifier,Brompton S6L,Dahon Speed Pro TT

  5. #5
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    Hi,

    As stated in another thread your calipers are too far
    apart. Move all spacers to the outside of the calipers.

    rgds, sreten.

  6. #6
    Senior Member Wilfred Laurier's Avatar
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    the brakes seem to lessen the clearance on the front
    but even with a different brake or with no brake at all
    the crown of the fork will be very limiting on tire clearance
    i would be very surprised if you could get the same size tire on the front as you have on the rear

    these clearance issues indicate to me
    that your frame is not ideal for use as a city bike
    luckily
    10 sp frames of similar quality but much better clearance
    allowing reasonable width tires and fenders
    are often less than twenty dollars
    including the rest of the bike
    if you know where to look

    also
    those are not riser bars
    but flat bars
    and the bend should be back towards the saddle
    not up toward the sky

    and the brake levers should be point down somewhat
    anywhere from approximately 15 degrees lower than horizontal
    to about 45 degrees from horizontal
    although putting them too low isnt the end of the world
    but putting them up like that is no good

  7. #7
    Senior Member Wilfred Laurier's Avatar
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    Quote Originally Posted by dynaryder View Post
    This is a centerpull:
    18240.jpg

    They were pretty common on road bikes like that one. Any of the local co-ops would have them laying around. You could also try a long-reach caliper. Sorry,can't name a specific one,discs are my bag.
    you are pointing him in the wrong direction
    if anything he needs extra short pull brakes
    long pull brakes will not work at all

  8. #8
    coprolite fietsbob's Avatar
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    Anyhow the type is an illustration of a center-pull , they did make a shorter reach type..

    other makers too. they were used on race bikes once upon a time..

    you might need to shop for another fork. since that one creates the problems you found..
    Last edited by fietsbob; 05-27-13 at 08:49 PM.

  9. #9
    Senior Member bikemig's Avatar
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    I'm skeptical whether the front fork is original given your clearance problems. This was a lower end Peugeot and none of them suffered from skinny tire-itis. Is the stem a 22.2 or 22.0? The manner in which the brake is set up is also a problem. You should have gained some clearance in going from 27 inch to 700c. Can you put in a spacer or two on the brake centering bolt to bring it farther out (that way the headset cups won't be an issue)? I really like the ingenuity that you used to keep the costs down on this project but I'd think about better lights on a commuter than those ebay specials.

  10. #10
    PatronSaintOfDiscBrakes dynaryder's Avatar
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    Quote Originally Posted by Wilfred Laurier View Post
    you are pointing him in the wrong direction
    if anything he needs extra short pull brakes
    long pull brakes will not work at all
    I said reach,not pull. The ones on my Verita can easily fit 32's,maybe even 35's.

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  11. #11
    Senior Member Wilfred Laurier's Avatar
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    Quote Originally Posted by dynaryder View Post
    I said reach,not pull. The ones on my Verita can easily fit 32's,maybe even 35's.
    sorry i meant reach too

    the pads in the brakes he has are already at or close to the closest position in the slots
    a longer reach brake will not work

    it is a somewhat common misconception that long pull brakes can make fatter tires fit on a bike with short reach brakes
    but this is not true at all
    the tire clearance is mostly determined by the frame or fork

    due to the different construction of different brakes
    you may be able to add or remove a mm or two of clearance
    but not more
    the op might be able to increase his front clearance by changing the setup of the brakes he has
    as one of the arms is down pretty low

    brakes must be selected to match the distance between the brake mounting point and the rim

    if you replace a set of short reach brakes that work properly
    with a set of long reach brakes
    all that will happen is that the pads will not longer be able to contact the rim

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