Advertise on Bikeforums.net



User Tag List

Results 1 to 16 of 16
  1. #1
    Unique Vintage Steel cuda2k's Avatar
    Join Date
    May 2005
    Location
    Allen, TX
    My Bikes
    Kirk Frameworks JKS-C, Serotta Nova, Gazelle AB-Frame, Fuji Team Issue, Schwinn Crosscut, All-City Space Horse
    Posts
    11,486
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)

    Crank ring bolts - what tool to get on the back side

    I've noticed that the crank rings on my Shimano Golden Arrow crank appear to be a bit loose. I got them as tight as I could when I assembled the crank originally, but I don't have a screw driver with a flat head wide enough to span both sides of the notches for the back-side nut. Thus it was very difficult to get a lot of torque on the bolt to cinch it down tight. Any handy ideas? I've thought about putting a butter knife blade in a vice and put the backside bolt on that and see if that works - but not sure how well that will go over.

  2. #2
    Senior Member
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    My Bikes
    '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
    Posts
    25,260
    Mentioned
    5 Post(s)
    Tagged
    0 Thread(s)
    There are specific tools made just for this use called chainring nut spanners or chainring nut screwdrivers. They hold the nut from rotating while you tighten the bolt with an Allan key. any LBS or mailorder bike supplier has them. Bike Tools Etc. lists several models and they are all under $5.

    Your butterknife technique will work in a pinch.

  3. #3
    如果你能讀了這個你講中文 genericbikedude's Avatar
    Join Date
    Feb 2005
    Location
    New York
    Posts
    3,542
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    The butter knife (or really really wide, perhaps sharpened screwdriver) technique works fine. The tool is mainly just a convenience thing for bike shops where time is money, though it is useful. Prooly though, next time you have to buy something from your lbs, bring your crank and ask for them to tighten you up right quick. They'll probably not mind.

  4. #4
    Unique Vintage Steel cuda2k's Avatar
    Join Date
    May 2005
    Location
    Allen, TX
    My Bikes
    Kirk Frameworks JKS-C, Serotta Nova, Gazelle AB-Frame, Fuji Team Issue, Schwinn Crosscut, All-City Space Horse
    Posts
    11,486
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Suppose I'll pull the crank this weekend and give it a go. I've been down to the LBS enough in the last few days they probably wouldn't mind giving it a good once over for me.

  5. #5
    Curmudgeon Wil Davis's Avatar
    Join Date
    Aug 2005
    Location
    Nausea, New Hamster
    My Bikes
    (see http://wildavis.smugmug.com/Bikes) Bianchi Veloce (2005), Nishiki Cascade (1992), Schwinn Super Sport (1983)
    Posts
    1,572
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    You need one of these:
    Attached Images Attached Images

  6. #6
    I couldn't car less. jeff williams's Avatar
    Join Date
    Nov 2003
    My Bikes
    Ritchey P-series prototype, Diamondback, Nishiki Triathelon Pro.
    Posts
    4,404
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

  7. #7
    Sweetened with Splenda
    Join Date
    Sep 2003
    Location
    Brooklyn, Alabama
    My Bikes
    Too many 80s roadbikes!
    Posts
    2,335
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Double-check your toolbox if you've ever bought an assortment of tools at one time... this is one of those cheap tools they like to sneak into tool assortments so that they can turn a 26-piece-set into a 27-piece-set and look like a better deal. I was surprised to discover I had one when I needed one.
    Falling down is not exercising.

  8. #8
    Unique Vintage Steel cuda2k's Avatar
    Join Date
    May 2005
    Location
    Allen, TX
    My Bikes
    Kirk Frameworks JKS-C, Serotta Nova, Gazelle AB-Frame, Fuji Team Issue, Schwinn Crosscut, All-City Space Horse
    Posts
    11,486
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    don't think I'm that lucky (my mini tool kit is burried right now under a ton of stuff from today's build) but there may be something around simular enough to make it work.

  9. #9
    Sweetened with Splenda
    Join Date
    Sep 2003
    Location
    Brooklyn, Alabama
    My Bikes
    Too many 80s roadbikes!
    Posts
    2,335
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by cuda2k
    don't think I'm that lucky (my mini tool kit is burried right now under a ton of stuff from today's build) but there may be something around simular enough to make it work.
    Mine's a screwdriver-with-a-spike design; I know I'd noticed it before but not known what it was for
    Falling down is not exercising.

  10. #10
    Senior Member
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    My Bikes
    '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
    Posts
    25,260
    Mentioned
    5 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Wil Davis
    You need one of these:
    Those little flat spanners won't work if the nut is really difficult to tighten as they tend to pop out of the slots. I've got both Sugino and Campy versions and neither is real useful. The screwdriver-type is much more effective.

  11. #11
    Curmudgeon Wil Davis's Avatar
    Join Date
    Aug 2005
    Location
    Nausea, New Hamster
    My Bikes
    (see http://wildavis.smugmug.com/Bikes) Bianchi Veloce (2005), Nishiki Cascade (1992), Schwinn Super Sport (1983)
    Posts
    1,572
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by HillRider
    Those little flat spanners won't work if the nut is really difficult to tighten as they tend to pop out of the slots. I've got both Sugino and Campy versions and neither is real useful. The screwdriver-type is much more effective.
    Well, I expect you're right - but how would you deal with this?
    Attached Images Attached Images

  12. #12
    Senior Member
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    My Bikes
    '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
    Posts
    25,260
    Mentioned
    5 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Wil Davis
    Well, I expect you're right - but how would you deal with this?
    Well, I'd start with a good quality 8 mm or 5/16" drill bit......

  13. #13
    cycles per second Gonzo Bob's Avatar
    Join Date
    Oct 2003
    Location
    Minnesota
    My Bikes
    Vitus Aluminum, DiamondBack Apex, Softride Powerwing 700, "Generic" Ishiwata 022, Trek OCLV 110
    Posts
    1,790
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Wil Davis
    Well, I expect you're right - but how would you deal with this?
    I'd take out the bolt, put a little grease on the threads and under the head, and try again. If that didn't work, I'd take the granny "off" (but not actually take the crank off) and see if that gave me enough access to the nut.

  14. #14
    Senior Member Deanster04's Avatar
    Join Date
    Dec 2005
    Location
    Boulder, Colorado
    My Bikes
    Cinelli Supercoursa 69, Ritchey Breakaway Cross, Mondonico Diamond Extra 05, Coors Light Greg Lemond (built by Scapin) 88, Scapin MTB, Stumpjumper 83, Specialized Stumpjumper M4, Lemond Poprad 2001
    Posts
    1,366
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by brokenrobot
    Mine's a screwdriver-with-a-spike design; I know I'd noticed it before but not known what it was for
    What you have is a spoke driver for rapid pretensioning the spokes on a wheel that you are building. The "spike" drives the blades up when the spoke reaches a certain depth. This allows you to quickly pretension all the spokes to an even starting point. Nice second application. I might try mine for the chain ring tightening.

  15. #15
    Senior Member
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    My Bikes
    '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
    Posts
    25,260
    Mentioned
    5 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Deanster04
    What you have is a spoke driver for rapid pretensioning the spokes on a wheel that you are building. The "spike" drives the blades up when the spoke reaches a certain depth. This allows you to quickly pretension all the spokes to an even starting point. Nice second application. I might try mine for the chain ring tightening.
    Not necessarilly. Chainring nut tools are often made in the wide-blade-screwdriver-with-a-spike form. The spike keeps the driver from slipping off sideways while you tighten the bolt. I have a Performance house-brand chainring nut driver in exactly that configuration.

  16. #16
    Senior Member Deanster04's Avatar
    Join Date
    Dec 2005
    Location
    Boulder, Colorado
    My Bikes
    Cinelli Supercoursa 69, Ritchey Breakaway Cross, Mondonico Diamond Extra 05, Coors Light Greg Lemond (built by Scapin) 88, Scapin MTB, Stumpjumper 83, Specialized Stumpjumper M4, Lemond Poprad 2001
    Posts
    1,366
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    OK. Nice to know that its possible. I am sure size matters in this case. I tried to see if the pretensioner worked and it was too small. Thanks.

Posting Permissions

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