Advertise on Bikeforums.net



User Tag List

Results 1 to 18 of 18
  1. #1
    Senior Member KenNC's Avatar
    Join Date
    Oct 2013
    Posts
    77
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)

    crank suggestions for a 76 Motobecane Grand Record? Need some help!

    I have a 1976 Motobecane Grand record frame (Reynolds 531 that year) wth a French-threaded bottom bracket shell (no bb) on which I would like to put a decent, reasonably period correct, crank. Catalogs say it came with a "TA Professional 52 42" but understand those are rather rare. The vintage Stronglights are attractive but really unsure of spindle length and spindle taper and don't want to get an expensive mish-mash of parts that don't fit with whatever BB I end up with (a VO with JIS taper, or an SKF or Phil Wood, or perhaps a used traditional off of ebay, are what i see as my BBoptions)

    I've been checking Velobase, Sheldon Brown, tables at Phil Wood and elsewhere, but there are a lot of options, so any general suggestions or "rules of thumb" that would help narrow the focus would be appreciated!

    I might opt for a "play it safe" approach and go with a Velo Orange crank, their 50.4 BCD crank (TA Cyclotouriste reproduction?) interests me and I don't have anything with that type of chainring set up.

  2. #2
    Junior Member
    Join Date
    Mar 2014
    Posts
    4
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    A word of caution!

    "I have a 1976 Motobecane Grand record frame (Reynolds 531 that year) wth a French-threaded bottom bracket shell (no bb)"

    Are you sure its French Thread , Many Motobecanes used Swiss thread BB. Swiss is french on adjustable side but left hand thread on the fixed cup. My 1972 Motobecane was this way.
    Not too many BB options, Phil Wood might be the only one ($$$)
    Good Luck

  3. #3
    Fat Guy on a Little Bike KonAaron Snake's Avatar
    Join Date
    Jun 2008
    Location
    Philadelphia, PA
    My Bikes
    Two wheeled ones
    Posts
    12,644
    Mentioned
    15 Post(s)
    Tagged
    1 Thread(s)
    I don't think the TAs are that hard to source on eBay. I'm sure someone here has a set they'd sell. I have a set of strong lights if you want to go that way.

  4. #4
    Senior Member KenNC's Avatar
    Join Date
    Oct 2013
    Posts
    77
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by bikinbruce View Post
    "Are you sure its French Thread , Many Motobecanes used Swiss thread BB. Swiss is french on adjustable side but left hand thread on the fixed cup. My 1972 Motobecane was this way.
    Not too many BB options, Phil Wood might be the only one ($$$)Good Luck
    I was concerned about this--first thing I did when I got the frame was take a LEFT side adjustable cup from an early 80s Moto that I believe is Swiss threaded (and currently have in pieces), and it threaded into BOTH sides of the 76 GR bottom bracket nice and smooth... Phew!

  5. #5
    Senior Member
    Join Date
    Sep 2007
    Location
    Wilmette, IL
    Posts
    4,545
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)

    crank suggestions for a 76 Motobecane Grand Record? Need some help!

    Stronglight 93 would be my choice.

  6. #6
    Senior Member vonfilm's Avatar
    Join Date
    May 2010
    Location
    Austin,Texas
    My Bikes
    73 Super Sport, 86 Tempo, 86 Peloton, 87 Super Sport, 83 Peugeot PFN10, 76 Super Course MK IV, 94 Univega Alpina 5.5
    Posts
    566
    Mentioned
    5 Post(s)
    Tagged
    0 Thread(s)
    IRD has Swiss Thread bottom brackets.

    Italian, French, and Swiss Conversion BB Cups
    1973 Schwinn Super Sport
    1986 Schwinn Peloton
    1987 Schwinn Super Sport frameset
    1976 Raleigh Super Course Mk II(for wife and son)
    1990 Davidson Impulse
    1990 Mongoose IBOC
    1995 Montague(BMW branded) folding mountain bike
    1999 Montague(BMW branded) folding mountain bike

  7. #7
    Senior Member bikemig's Avatar
    Join Date
    Apr 2012
    Location
    Middle Earth
    My Bikes
    A lot of old bikes and a few new ones
    Posts
    5,041
    Mentioned
    37 Post(s)
    Tagged
    1 Thread(s)
    Quote Originally Posted by big chainring View Post
    Stronglight 93 would be my choice.
    Those are really pretty cranks. I like the stronglight 99 as well; not as pretty but the stronglight cranks were really light weight and the chain rings were very well made.

  8. #8
    Still learning oddjob2's Avatar
    Join Date
    May 2012
    Location
    North of Canada, Adirondacks, NNJ
    My Bikes
    Too many
    Posts
    5,759
    Mentioned
    54 Post(s)
    Tagged
    1 Thread(s)
    +1 on the SL 93's
    Life is like riding a bicycle. To keep your balance you must keep moving. Albert Einstein
    2014 Additions: 1985 Trek 560, 1992 Trek Multitrack 700 (my 2nd), 1994 Trek Carbon 2200, Peugeot PX-10, 1981 Schwinn Voyageur 11.8, 1989 Bridgestone RB-1, Miyata 912

  9. #9
    billy chuck eschlwc's Avatar
    Join Date
    May 2011
    Location
    on the beach
    My Bikes
    '73 falcon sr, '76 g.record, '80 g.jubilé, '84 davidson
    Posts
    2,382
    Mentioned
    24 Post(s)
    Tagged
    0 Thread(s)
    'swiss' means the thread diameter is french on both sides, but the fixed cup direction is left, like standard (not french) bb's.

    my '76 (with its swiss bb) came to me with a sugino mighty crank, and that's the way i've left it. it might not look like the catalog, but i love it. i have basically the same crank (mighty competition) on my '73 falcon too.


  10. #10
    Old fart JohnDThompson's Avatar
    Join Date
    Nov 2004
    Location
    Appleton WI
    My Bikes
    Several, mostly not name brands.
    Posts
    13,144
    Mentioned
    14 Post(s)
    Tagged
    0 Thread(s)
    How about a Velo-Orange "Grand Cru?" No need for a proprietary extractor tool and French thread (or threadless) bottom bracket also available.

    Last edited by JohnDThompson; 05-16-14 at 05:30 PM.

  11. #11
    Senior Member rootboy's Avatar
    Join Date
    Apr 2005
    Location
    Sand Spit East
    Posts
    13,047
    Mentioned
    88 Post(s)
    Tagged
    2 Thread(s)
    I have a spare set of TA Professional 3 arm cranks. Send me a PM if interested.

  12. #12
    Senior Member Michael Angelo's Avatar
    Join Date
    May 2010
    Location
    Hurricane Alley , Florida
    My Bikes
    Treks (USA), Schwinn Paramount, Schwinn letour,Raleigh Team Professional, Gazelle GoldLine Racing, 2 Super Mondias, Carlton Professional.
    Posts
    3,393
    Mentioned
    7 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by rootboy View Post
    I have a spare set of TA Professional 3 arm cranks. Send me a PM if interested.
    I've got two complete TA Pro 3 arm cranksets....one English or French. I have no use for them.

  13. #13
    Senior Member rootboy's Avatar
    Join Date
    Apr 2005
    Location
    Sand Spit East
    Posts
    13,047
    Mentioned
    88 Post(s)
    Tagged
    2 Thread(s)
    Quote Originally Posted by Michael Angelo View Post
    I've got two complete TA Pro 3 arm cranksets....one English or French. I have no use for them.
    Oh yeah? ..well…I've got THREE. See your 2 and raise you one.

  14. #14
    Senior Member bikemig's Avatar
    Join Date
    Apr 2012
    Location
    Middle Earth
    My Bikes
    A lot of old bikes and a few new ones
    Posts
    5,041
    Mentioned
    37 Post(s)
    Tagged
    1 Thread(s)
    Quote Originally Posted by rootboy View Post
    Oh yeah? ..well…I've got THREE. See your 2 and raise you one.
    I have a stronglight 99, a stronglight 99 bis, a stronglight 93, and even a few spare chain rings for the 99s. I think we just played to a draw on this one,

    Heck I just put the stronglight 99 on a Japanese bike and things seem copacetic:

    P1010245.jpg
    Last edited by bikemig; 05-17-14 at 07:02 AM.

  15. #15
    Senior Member SJX426's Avatar
    Join Date
    May 2008
    Location
    Alexandria, Va
    My Bikes
    1972 Motobecane Le Champion (totaled), 1973 Bottecchia Giro d'Italia, 1983 Colnago Superissimo, 1984 Trek 610, 1994 Burley Duet, 1988(?) Pinarello Tre Cime, 88 Masi Gran Corsa (Frame), 1991 Pinarello Montello, 1997 Specialized RockHopper
    Posts
    2,950
    Mentioned
    16 Post(s)
    Tagged
    1 Thread(s)
    Another vote for Stonglight 93. I have one and really like the classic look.

  16. #16
    Senior Member rootboy's Avatar
    Join Date
    Apr 2005
    Location
    Sand Spit East
    Posts
    13,047
    Mentioned
    88 Post(s)
    Tagged
    2 Thread(s)
    I agree, the 93 is a better looking crank than the 3 pin TA. Though the TA is "proper". Might be easier to find rings for the 93 also.

  17. #17
    Senior Member Grand Bois's Avatar
    Join Date
    Mar 2005
    Location
    Pinole, CA, USA
    Posts
    15,513
    Mentioned
    16 Post(s)
    Tagged
    0 Thread(s)
    I like the looks of the Stronglight 93. I have them on two bikes. The 122 BCD really limits your choice of rings. It was intended for road racing. I think the 99 is a more practical choice if you're not going to race because the 86 BCD allows smaller rings. The BIS version has drilled rings, if you're into that.

  18. #18
    Senior Member KenNC's Avatar
    Join Date
    Oct 2013
    Posts
    77
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Thank you for the helpful suggestions and kind offers--classy folks on this forum! I need to wait a month or so on this--mostly to explain to my wife why we have another frame in the house and vintage wheelset on its way!
    Given the choices and my tendency to want to swap and change things, this does raise the question: "What is the most generally useful bottom bracket for two-ring cranks?" I see 118mm mentioned, and it seems ISO taper for most of these vintage cranksets. May keep my eyes open for one of those while i am working on the frame--which is cleaning up very nicely (but that is a topic for a separate thread).

Posting Permissions

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