RADBMX.CO.UK

Technical & Reference Section => Tech and Restoration => Topic started by: garran on July 28, 2013, 11:42 AM

Title: crank spindle re threading
Post by: garran on July 28, 2013, 11:42 AM

morning fellas, can  the threads on a cranks spindle be re-threaded?

cheers

Title: Re: crank spindle re threading
Post by: kev-s on July 28, 2013, 07:38 PM

if its a female crank axle then u have two choices really

get a tap and die and cut a new thread into it and use a slightly larger bolt

or

drill it out slightly larger than the current bolt size and fit a helicoil and then u can use the original bolt size :daumenhoch:

Title: Re: crank spindle re threading
Post by: garran on July 30, 2013, 03:39 PM

cheers Kev its actually on the threads of the bearing race

(http://i193.photobucket.com/albums/z203/garran01/DSCF5572_zpse49142b0.jpg) (http://s193.photobucket.com/user/garran01/media/DSCF5572_zpse49142b0.jpg.html)

Title: Re: crank spindle re threading
Post by: garran on August 01, 2013, 07:28 PM

anyone know?

Title: Re: crank spindle re threading
Post by: leehunt1 on August 01, 2013, 09:52 PM

Ask Kap..!

Title: Re: crank spindle re threading
Post by: garran on August 03, 2013, 06:23 PM

cheers Lee, just wondering if it could be repaired

redline 84 double dimple 401 spindle, might be of use to someone perhaps??  (was mine from bitd, stripped chainring side from being lazy and not keeping it tight)

Title: Re: crank spindle re threading
Post by: Gary72 on August 04, 2013, 10:22 AM

Try a thread file. I used one on a one piece crank awhile back. Worked fine.