hi, everybody
i'm trying to find out what torque is recommended for shimano's spd sl pedals (to a shimano 105 crank)
thanks

I use the big Park shop pedal wrench with the foot long blue, round, handle.

But the regular ones with the fixed cup box end on the other side of it is sufficient.

Pedals tighten themselves through the pedaling motion. Put them on with liberal amount of grease, and fairly snug, and you shouldn't have a problem.

Pedals aren't something like a CF stem that requires a precise torque spec.

FWIW, the torque spec on Garmin Vectors is 25nm (which you need to hit to get the power meter readings right) That's a lot mor torque than I ever put a pedal on before. Which tells you can put a pedal on in anywhere from a few nm, to pretty damn hard, and it will work either way.

Key is grease on the spindle, assuming you ever want to take them off.

Shimano says 35-55nm. https://bike.shimano.com/media/techdo...9830672281.pdf

I can guarantee you they will stay on with less. 35-55nm is pretty tight. Tighten them nice and firm and you'll be fine.

This
No need to go crazy.

I tighten them with just a slight tug on the wrench. They have never ever come off and they are easy to remove. The *one* time I really honked on them was the first time I put my own pedals on. Learned that lesson the hard way and never did it again.

J.

Thanks everybody. It's never something I've measured as the pedal wrench is simpler than using a torque wrench.

Pedals don't tighten themselves. The direction of the threads prevents precession from making them unscrew and fall out. If the pedal is loose, it won't unscrew, but it can wallow and damage the threads in the crank. SRAM specifies 47-54 Nm for pedals. Look specifies 40 Nm. These numbers and requirements are a product of engineering and extensive testing rather than anecdotal experience.

^ Does anyone actually tighten pedals that tight? Prior to getting Vectors, I'm sure I didn't tighten them to even 25nm, and have never had a problem with a pedal loosening, or thread damage on a crank ( even with taking pedals on and off reasonably often for travel).

Bit of pressure on the end of a Park pedal wrench seems to work fine.

OP, this really ends the thread. I have 105 pedals on my bike and never even thought to use a torque wrench. I put grease on the threads, then installed them with my 8mm allen wrench. No issues at all.

Are you sure these numbers aren't a byproduct of CYA policy instead?

I was wondering the same thing. 40nm sounds like an awful lot to me. That's a long torque wrench and you have to lean on it pretty hard to get to that.

J.

I put antiseize compound on the threads, and then just tighten them with an Allen wrench until they are just snug.
I've never had one come loose.

Now on the other hand, I done a lot of swearing trying to get pedals off that someone else installed.