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Jack Osbourne snr.
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July 28, 2017 at 12:00 pm #27417
Presmani17
Hi. I have just bought new FSA k-force carbon cranks and Shimano dura ace pedals. I am struggling to install pedals on the cranks. I am tightening the pedals in the correct direction, but they simply don’t go in. Has anyone faced a similar problem? Thanks!
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Jack Osbourne snr
You’ll find that the thread
You’ll find that the thread problem has been identified way up in this thread. I’m not suggesting corrosion as an issue here. Nor is guyrwood or behindthebikeshed.
It is common practice in comment sections such as this that general advice around the key point is offered as it helps others who may have a similar issue but very little experience of their own to diagnose the issue.
On behalf of all the experienced old timers who try to contribute as positively as possible to the knowledge of the many cycling newbies who read this site, I apologise for causing you such obvious offence.
And, by the way, a little bit of copper slip WILL help to catch the first thread.
Thanks for your positive contribution.

maviczap
Jack Osbourne snr wrote:The use of copper grease is good advice.Normal grease can be used but you need to periodically disassemble, degrease and reassemble to keep galvanic welding at bay in alloy cranks or carbon cranks with alloy female threading.
Yes, but the OP’s problem is he can’t thread the pedal onto a brand new crank, so no point greasing it with anything until he can mount it on the crank.
It’s a thread problem, not a corrosion issue
Jack Osbourne snr
The use of copper grease is
The use of copper grease is good advice.
Normal grease can be used but you need to periodically disassemble, degrease and reassemble to keep galvanic welding at bay in alloy cranks or carbon cranks with alloy female threading.
maviczap
I bet the thread on either
I bet the thread on either the pedal or crank is fubar.
Take it to your LBS so they can run a thread tap through the crank thread and restore and clean the thread
Same for the pedal.
Look a the threads on both and see if there’s any damage, quite easy to do if you’d dropped the pedal. Harder to do on a crank
StraelGuy
Also, use plenty of grease or
Also, use plenty of grease or copper grease on the threads. A mate of mine needed a new crankset and pedals after his welded themselves together. His LBS actually broke their pedal spanner (and mine!) trying to remove the pedals.
madcarew
I have FSA carbon cranks and
I have FSA carbon cranks and Shimano DA pedals. They are compatible. Pedal thread is universal. all the tips above are good value. Make sure you are tightening the correct direction !
Anonymous
i had some issues with a high
i had some issues with a high end crank, some tolerence issues both with pedals and crank can cause matters to be awkward/tight.
check with other pedals, if go in ok, apply copper grease to orig pedals and try again. if still no joy return to retailer.
CXR94Di2
My Shimano SPD pedals have
My Shimano SPD pedals have right and left markers and tighten arrow direction, can’t go wrong with fitting.
StraelGuy
Good question. With pedals,
Good question. With pedals, the drive side one screws in normally. The non-drive side screws in the ‘wrong’ way.
Jack Osbourne snr
Easy way to remember the
Easy way to remember the threading on pedals… They ALWAYS tighten towards the front of the bike.
eg. If you’re on the right side of the bike, the direction to insert the pedal is clockwise, rotating the threading towards the front of the bike.
If you’re on the left side of the bike, the direction to insert the pedal is anticlockwise, but again rotating the pedal threads towards the front of the bike.
It can however take a few seconds of fiddling to line up the threads until they catch… Even for old hands.
check12
Will one go in but the left
Will one go in but the left hand side one won’t?
Ratfink
line up the pedal and give it
line up the pedal and give it 1/2 a turn or so the wrong way (you can feel it drop onto the thread) then tighten the right way.
srchar
Check that you are trying to
Check that you are trying to fit the correct pedal to the correct crank arm and remember that the non-drive side pedal is reverse threaded.
They should fit, pedal threads are just about the last universal standard left in cycling.
VeloUSA
Pedals should fit. Sometimes
Pedals should fit. Sometimes it takes a bit of effort for the first few threads to take. If you unsure about marring the threads I would grease them and install the pedals from the crank arms backside.
don simon fbpe
Surely all threads are the
Surely all threads are the same or Look are goinging to be pretty screwed.
Check for flush engagement, i’ve had the pedals slightly out of line and they won’t catch the thread.
Check that you are indeed screwing in the correct direction.
No protective sheaths anywhere?
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