The QUICK question thread.....

Daniel Hale said:
in desperate need of undo advice
see pics, can’t undo the allen key on the old octalink cranks..i presume the l-r threads are opposite in that they both undo the same way? have sprayed it already, have a 1/2” socket handle with a thomson seatpost on it, won’t budge
also when i get the other side crank off, start undoing the bottom bracket i undo it 6-6 turns then it becomes really tight? like it’s still connected to the other side..i thought they undid independently?
am losing it..swearing & abuse

View attachment 361476
View attachment 361477
Click to expand...
Looks like you've lost the self-eaxtractor cap, which the bolt pulls against to remove the crank. Both bolts are normal R/H thread, therefore anti-clockwise to undo.

Further to the pipe-over-allen key-for more leverage idea suggested earlier, remove the pedal from the offending crank, wrap some rag over the crank to protect it fron gouges, and slip a large pipe over the crank and use the ground as a stopper against crank rotation. Then apply your enhanced leverage, with impact (shock loading can free over-tight threads where simple brute leverage won't) if required.
 
The Duckmeister said:
Looks like you've lost the self-eaxtractor cap, which the bolt pulls against to remove the crank. Both bolts are normal R/H thread, therefore anti-clockwise to undo.

Further to the pipe-over-allen key-for more leverage idea suggested earlier, remove the pedal from the offending crank, wrap some rag over the crank to protect it fron gouges, and slip a large pipe over the crank and use the ground as a stopper against crank rotation. Then apply your enhanced leverage, with impact (shock loading can free over-tight threads where simple brute leverage won't) if required.
Click to expand...

Is this with the bike in an upright position and the bottom bracket shell + crank arm resting on the ground?
 
The Duckmeister said:
Looks like you've lost the self-eaxtractor cap, which the bolt pulls against to remove the crank. Both bolts are normal R/H thread, therefore anti-clockwise to undo.
Click to expand...
Yes, this
had to have a 2nd look, but you appear to be correct
Dan, does the bolt undo? (should be standard CCW)
if so, do you have another set of cranks with a self extracting bolt cap that you can pinch?
 
fatboyonabike said:
Yes, this
had to have a 2nd look, but you appear to be correct
Dan, does the bolt undo? (should be standard CCW)
if so, do you have another set of cranks with a self extracting bolt cap that you can pinch?
Click to expand...

Or a crank puller ..? Or is this model crank immune to that?
 
The Duckmeister said:
Looks like you've lost the self-eaxtractor cap, which the bolt pulls against to remove the crank. Both bolts are normal R/H thread, therefore anti-clockwise to undo.

Further to the pipe-over-allen key-for more leverage idea suggested earlier, remove the pedal from the offending crank, wrap some rag over the crank to protect it fron gouges, and slip a large pipe over the crank and use the ground as a stopper against crank rotation. Then apply your enhanced leverage, with impact (shock loading can free over-tight threads where simple brute leverage won't) if required.
Click to expand...
yep had wrapped an old tube around the crank, crank was in a pipe also..angle grinder tomorrow
 
Before resorting to the angle grinder I'd try some heat and then some sharp shocks with a hammer on the end of your allen socket drive.
 
I don’t recall my octalink being self extracting. Threads in crank are for the puller. I might have misread the problem though.
 
Success quick ride at gissy this morning, into Bunni GS Sunbury (place pakjed)
10nibs angle grinder, bloody satisfying, didn't knick or melt brake line either
361495

361496
 
moorey said:
I don’t recall my octalink being self extracting. Threads in crank are for the puller. I might have misread the problem though.
Click to expand...
Depended on model level and to an extent, model vintage, some were self-extracting, others were not. Bolts & caps are interchangeable.
 
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