Advertise on Bikeforums.net



User Tag List

Results 1 to 14 of 14

Thread: Need your help.

  1. #1
    re:member
    Join Date
    Jan 2005
    Location
    Cracow, Poland
    My Bikes
    unknown make TT bike, fixed; Romet Sport, gone; titanium Pinarello gone;Colnago with Campy C-Record/Super Record,on it's way; Funny Gianni Motta; Buehler track, Polrad track chrome; titanium MTB on 28'', fixed; Tri Wheeler, fixed
    Posts
    874
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Need your help.

    Hi all,
    Just bought an old time trial frame for fixie conversion, with the intent to shave all the braze-ons and change the fork to 622 one:
    http://allegro.pl/show_item.php?item=39505439
    The seller didn't know the make, but this steel frame shows beautiful craftsmanship.
    My surprise was that the frame and fork both come from a bike stamped with Gianni Motta name and logos all over the place. I have two other roadies and I do not need a third one. Good weather one has vertical dropouts and can not be converted, the bad weather one can not be substituted with this one as it would not accept wider tyres.

    Would you destroy this beauty to build a fixie?? (Yes I know it is fixie forum :-)

  2. #2
    cxmagazine dot com pitboss's Avatar
    Join Date
    Jun 2003
    Location
    WI
    My Bikes
    Titus road, Fort CX
    Posts
    8,270
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    That is like asking Cheney if he would invade Iraq for Oil to make his fat buddies richer at the expense of US Soldiers lives and families, as well as the lives of Iraqis.
    In short - it's your call.
    Deathlap - cyclocross, training, beer,...escape hatch

  3. #3
    shoot up or shut up. isotopesope's Avatar
    Join Date
    Nov 2003
    Location
    colorado springs, co
    My Bikes
    yes please.
    Posts
    1,961
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    if you put a 700c fork on there, you're going to drastically change the frame's geometry. i would leave the 650c fork on there.

  4. #4
    re:member
    Join Date
    Jan 2005
    Location
    Cracow, Poland
    My Bikes
    unknown make TT bike, fixed; Romet Sport, gone; titanium Pinarello gone;Colnago with Campy C-Record/Super Record,on it's way; Funny Gianni Motta; Buehler track, Polrad track chrome; titanium MTB on 28'', fixed; Tri Wheeler, fixed
    Posts
    874
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by isotopesope
    if you put a 700c fork on there, you're going to drastically change the frame's geometry. i would leave the 650c fork on there.
    Can play with the rake to compensate, was asking more about shaving braze-ons.
    I guess I will leave the frame as is down tube shifters support and all, I just setup it as fixe.

    Cheers,
    v.

  5. #5
    Senior Member Msngr's Avatar
    Join Date
    Dec 2003
    Location
    south side, you got a problem with that?
    Posts
    993
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    is it me, or does that geometry seem a little stretched out for a fixie?

  6. #6
    re:member
    Join Date
    Jan 2005
    Location
    Cracow, Poland
    My Bikes
    unknown make TT bike, fixed; Romet Sport, gone; titanium Pinarello gone;Colnago with Campy C-Record/Super Record,on it's way; Funny Gianni Motta; Buehler track, Polrad track chrome; titanium MTB on 28'', fixed; Tri Wheeler, fixed
    Posts
    874
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I have comapred it with my other frame (700C), is is just the head tube is short because of forward sloping top tube. It doesn't look like Motta changed the regular geometry much going for 650C front :-)

    I guess I will wait for more comments here, you gang are really useful.

    Cheers,
    v.

  7. #7
    Direct Hit Not Required BlastRadius's Avatar
    Join Date
    Nov 2003
    Location
    San Bruno, CA
    My Bikes
    Pinarello Galileo, Bianchi Alloro, Guerciotti Cross Force, Iron Horse Hollowpoint MKIII
    Posts
    6,190
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Build it into a fixie without cutting off the braze-ons.

  8. #8
    ya'll can't mush me vomitron's Avatar
    Join Date
    Dec 2003
    Location
    san diego, ca
    Posts
    839
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I would keep the geometry the same.

    If you want a dual-700c bike, why get a frame like that? Seems sort of silly.

    I would grind down the shifter bosses when you get the chance. It would make a nice fixie.

  9. #9
    Iguana Subsystem dolface's Avatar
    Join Date
    Nov 2004
    Location
    san francisco
    Posts
    4,017
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    i second BlastRadius's suggestion.

  10. #10
    re:member
    Join Date
    Jan 2005
    Location
    Cracow, Poland
    My Bikes
    unknown make TT bike, fixed; Romet Sport, gone; titanium Pinarello gone;Colnago with Campy C-Record/Super Record,on it's way; Funny Gianni Motta; Buehler track, Polrad track chrome; titanium MTB on 28'', fixed; Tri Wheeler, fixed
    Posts
    874
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by vomitron
    I would keep the geometry the same.

    If you want a dual-700c bike, why get a frame like that? Seems sort of silly.

    I would grind down the shifter bosses when you get the chance. It would make a nice fixie.
    Guess so, seems silly. There is not much choice over here and that was not my fist one. I had nice track Wicher frame dating from sixties, yet some a#$#%^ forced 27.2 seatpost down the seat tube. The frame broke near the place where seatstays join the tube on 2nd day of removing the seatpost :-(.

  11. #11
    Track Rat gotambushed's Avatar
    Join Date
    Dec 2004
    Location
    Pittsburgh, PA
    My Bikes
    To many
    Posts
    128
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by vobopl
    some a#$#%^ forced 27.2 seatpost down the seat tube. The frame broke near the place where seatstays join the tube on 2nd day of removing the seatpost :-(.
    hmmm, that *can* be fixed, how depends on how its broken. if you still have the frame you could take it to a welding shop and get either a patch TIG welded/brazed or a fillet brazed in after reforming the seat tube, depending on severity and tubing type, or if the seatstays are loose, you could just get it re-fitted and re-brazed, or both depending on the severity of course. without pictures/inspection, i can't tell you.
    Almost is only for horseshoes and hand grenades.

  12. #12
    oh..so...crusty.. crustedfish's Avatar
    Join Date
    Oct 2003
    Location
    chicago
    My Bikes
    bianchi pista
    Posts
    622
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by [165]
    That is like asking Cheney if he would invade Iraq for Oil to make his fat buddies richer at the expense of US Soldiers lives and families, as well as the lives of Iraqis.
    In short - it's your call.
    brialliant 165. f'in brilliant.

  13. #13
    re:member
    Join Date
    Jan 2005
    Location
    Cracow, Poland
    My Bikes
    unknown make TT bike, fixed; Romet Sport, gone; titanium Pinarello gone;Colnago with Campy C-Record/Super Record,on it's way; Funny Gianni Motta; Buehler track, Polrad track chrome; titanium MTB on 28'', fixed; Tri Wheeler, fixed
    Posts
    874
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by gotambushed
    hmmm, that *can* be fixed, how depends on how its broken. if you still have the frame you could take it to a welding shop and get either a patch TIG welded/brazed or a fillet brazed in after reforming the seat tube, depending on severity and tubing type, or if the seatstays are loose, you could just get it re-fitted and re-brazed, or both depending on the severity of course. without pictures/inspection, i can't tell you.
    I was toying with this idea, just was not sure repaired will be strong enough. I will give it a try, thanks.
    So, good and bad weather roadies stay what they are, red Ginno Motta 650/700 goes on the wall as a piece of art and repaired Wicher becomes a fixie as intended :-))

    Cheers,
    v.

  14. #14
    Track Rat gotambushed's Avatar
    Join Date
    Dec 2004
    Location
    Pittsburgh, PA
    My Bikes
    To many
    Posts
    128
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    one quick thing about tubing type,
    if your frame is butted tubing, i'm not sure about wichers tubing types, make sure the welder/brazer knows, it will change how they heat the tubing and how much power they can use on the TIG torch.
    a proper fillet braze is almost as strong as the material surrounding it, due to brazing rod being an alloy of lower melting temp metals, ie brass, gold, silver, etc
    a proper TIG weld is stronger than the material surrounding it, but can damage the surrounding metal if its extremly thin or heat treated,
    i would find an excellent welder with alot of brazing expirence, and ask him to make a judgement on it, ask him how he's going to fix it, make sure he knows what kind of tubing is on the bike, etc.
    don't let him near it with a MIG or stick welder what ever you do, that'll burn right through a thin wall tube
    Almost is only for horseshoes and hand grenades.

Posting Permissions

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