Advertise on Bikeforums.net



User Tag List

Results 1 to 10 of 10
  1. #1
    Senior Member 67tony's Avatar
    Join Date
    Feb 2012
    Location
    mid-Michigan
    Posts
    461
    Mentioned
    0 Post(s)
    Tagged
    1 Thread(s)

    Truvativ adapter - Suntour BB question

    Will this Truvativ American to Euro adapter
    http://harriscyclery.net/product/tru...apter-1335.htm

    fit this Sun Tour bottom bracket?
    http://www.ebay.com/itm/Vintage-Sunt...item5893966422

    (The width of my frame is about 66mm...with the BB it is about 71mm)

    THANKS!

  2. #2
    Is a real super guy. Henry III's Avatar
    Join Date
    Aug 2010
    Location
    Medford, Or
    My Bikes
    Self built 650c frame/fork, Trek Stache 8, Guerciotti, Gary Fisher 86 Montare, Schwinn Homegrown
    Posts
    1,524
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    You may want to buy the adapter first and install it to see how wide the bb is and what kind of cranks are you running? Then you can measure and see what length spindle you'll need. I'm horrible at this so I usually bite the bullet and just take it in.
    Last edited by Henry III; 04-29-12 at 07:56 AM.

  3. #3
    Bianchi Goddess Bianchigirll's Avatar
    Join Date
    Apr 2009
    Location
    Camp Hill, PA
    My Bikes
    Too many to list here check my signature.
    Posts
    18,997
    Mentioned
    4 Post(s)
    Tagged
    1 Thread(s)
    In theroy it should work. what kind of crank are you going to use? Unless you have or are buying a Superbe crankset odds are you cranks won't fit that BB spindle.

    The length of the spindle depends on the crank you are going to use.

    Harris has good customer service, tell them which cranks you want to use and ask if they have a BB to fit it and that adaptor.
    Bianchis '87 Sport SX, '90 Proto (2), '91 Boarala 'cross, '93 Project 3, '88 Trofeo, '86 Volpe, '89 Axis, '79 Mixte, '99 Mega Pro XL Ti, '97 Ti Megatube, , '90 something Vento 603,

    Others but still loved,; '80 RIGI, '80 Batavus Professional, '87 Cornelo, '86 Bertoni (sold), '09 Motobecane SS, '98 Hetchins M.O., '09 K2 Mainframe, '89 Trek 2000, '?? Jane Doe (still on the drawing board), '90ish Haro Escape

  4. #4
    vintage motor kroozer's Avatar
    Join Date
    Sep 2008
    Location
    Tepic, Nayarit, Mexico
    Posts
    822
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    The Truvativ adapter ONLY works with sealed-type BB's that you just screw in.

  5. #5
    Is a real super guy. Henry III's Avatar
    Join Date
    Aug 2010
    Location
    Medford, Or
    My Bikes
    Self built 650c frame/fork, Trek Stache 8, Guerciotti, Gary Fisher 86 Montare, Schwinn Homegrown
    Posts
    1,524
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Why wouldn't it work with a non cartridge bb? Because the two adapter cups may not sit perfectly parallel and would be more of an issue with a non sealed bb? I realize it said it in the description but don't see why it wouldn't work.

  6. #6
    Senior Member Chrome Molly's Avatar
    Join Date
    Jan 2012
    Location
    Minnesota
    My Bikes
    Dave Anderson Custom, Trek 760, Miyata 1000, Croll etc
    Posts
    1,177
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Not so much a matter of parallel (the frame pretty much ensures they will be parallel), it's the sensitivity to width. I would not try it because the adapter is more or less a press in (the little screws don't do much but hold it in). The frame itself may limit the amount you are able to press it in, so I would not assume you're going to get the same width you started at. My Schwinn super sport has a bit of "overhang" despite using a large vise to get it in as far as possible (there was an internal "ridge" inside). For a couple bucks more you can get a brand new sealed bottom bracket that will work just fine and isn't as sensitive to the width. The newer design where the one side is basically an open circle bearing that the bracket rides in (the bearings aren't impacted as much (if any) by small deviations in overall width of the net setup.

  7. #7
    old and fixed... clubman's Avatar
    Join Date
    Jan 2010
    Location
    Nova Scotia
    My Bikes
    roadsters, club bikes, fixed and classic
    Posts
    1,797
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    I've got the Trutativ installed with a traditional BB but it was fussy. I had to do a little filing on installation and access to the fixed cup was and is difficult. Probably why sealed units are recommended. I had to use locktite on the fixed cup to keep it snug.

  8. #8
    Senior Member miamijim's Avatar
    Join Date
    Aug 2003
    Location
    Tampa, Florida
    Posts
    11,611
    Mentioned
    9 Post(s)
    Tagged
    1 Thread(s)
    Quote Originally Posted by clubman View Post
    I've got the Trutativ installed with a traditional BB but it was fussy. I had to do a little filing on installation and access to the fixed cup was and is difficult. Probably why sealed units are recommended. I had to use locktite on the fixed cup to keep it snug.
    That's my experience as well. They're fussy.

    If the adaptors dont fit into the frame you need to either grind the inside of the frame or grind the adaptors. Then there's the challenge of getting the cups tight, for myself the fixed cup is easy because I have a variety of specialized tools but how are your going to tighten the adjusting cup lock ring?

    in the big picture is there another option? (besides dumping the frame?)
    WWW.CYCLESPEUGEOT.COM 2005 Pinarello Dogma; 1991 Paramount PDG 70 Mtb; 1976? AD Vent Noir; 1989 LeMond Maillot Juane F&F; 1993? Basso GAP F&F; 1989 Terry Symmetry; 2003 Trek 4700 Mtb; 1983 Vitus 979

  9. #9
    Senior Member
    Join Date
    Nov 2009
    Posts
    295
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    It doesn't exactly help because it causes other issues but if you can find an older MRP branded BB adapter they don't have the recess for the cups and work with 73mm BB's.

    So it could work with 73mm unsealed BB's...if such a thing exists.

  10. #10
    Ride, Wrench, Swap, Race dddd's Avatar
    Join Date
    Jan 2010
    Location
    Northern California
    My Bikes
    Cheltenham-Pederson racer, Boulder F/S Paris-Roubaix, Varsity racer, '52 Christophe, '62 Continental, '92 Merckx, '75 Limongi, '76 Presto, '72 Gitane SC, '71 Schwinn SS, etc.
    Posts
    2,801
    Mentioned
    2 Post(s)
    Tagged
    1 Thread(s)
    Regular spindles for 73mm are still offered. I think the number code on these will start with a 5 instead of a 3.

Posting Permissions

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