gfxgfx
 
logo
 
gfx gfx
gfx
975792 Posts in 138942 Topics by 6363 Members - Latest Member: Bmxflex November 12, 2024, 01:56 AM
*
gfx* Home | Portal | Forum | Merchandise | Help | Login | Register | gfx
gfx
RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  Crank problem - they keep coming loose
gfx
gfxgfx
 

Author Topic: Crank problem - they keep coming loose  (Read 944 times)

0 Members and 1 Guest are viewing this topic.

deckfourtyfour

  • Guest
Crank problem - they keep coming loose
« on: January 13, 2006, 09:58 AM »
Happy Friday

The specific problem is the loosening of my left hand crank arm sideways off the spindle.
They are Redline Proline cranks (single pinch bolt). Now I have tightened everything up as much as poss, but after a decent ride the left crank arm seems to slip out very slightly, meaning the spacers rattle around on the spindle between the arm and the bearings.

It's really annoying me, so any advice would be appreciated.


Offline ORB

  • Founding Fathers
  • My life is Radbmx
  • *
  • Posts: I am a geek!!
  • Rated:
Re: Crank problem - they keep coming loose
« Reply #1 on: January 13, 2006, 10:00 AM »
Odd.

And you have nipped up the pinch bolt and the end bolts?

12

deckfourtyfour

  • Guest
Re: Crank problem - they keep coming loose
« Reply #2 on: January 13, 2006, 10:07 AM »
yes, with a really long allen key, so got plenty of leverage on the tightening

theRuler

  • Guest
Re: Crank problem - they keep coming loose
« Reply #3 on: January 13, 2006, 10:15 AM »
try some thread lock on the end bolt
make sure you do that up first though, then the pinch bolts!!!


deckfourtyfour

  • Guest
Re: Crank problem - they keep coming loose
« Reply #4 on: January 13, 2006, 10:18 AM »
Ahh. The simplest things.
I have been doing up the pinch bolt first. Why I didn't think of doing it the other way around I don't know :idiot2:I'll try it and see it it works.
Cheers

theRuler

  • Guest
Re: Crank problem - they keep coming loose
« Reply #5 on: January 13, 2006, 10:29 AM »
cool
the pinch bolts should hold the crank arm on no worries but the end bolts can work loose and disappear (making it tricky to get it all tight again after a rebuild) so make sure it's tight.


Offline ORB

  • Founding Fathers
  • My life is Radbmx
  • *
  • Posts: I am a geek!!
  • Rated:
Re: Crank problem - they keep coming loose
« Reply #6 on: January 13, 2006, 10:49 AM »
remeber,

Tight's tight, but too tight's fooked.
12

theRuler

  • Guest
Re: Crank problem - they keep coming loose
« Reply #7 on: January 13, 2006, 10:59 AM »
do it up until it strips, then back it off a turn

RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  Crank problem - they keep coming loose
 

gfxgfx
gfx gfx
Powered by MySQL Powered by PHP Valid XHTML 1.0! Valid CSS!
SimplePortal 2.3.5 © 2008-2012, SimplePortal