Pedal thread sizing

[PeteXXX]

Simple question, probably. I'm looking at some new pedals, some are 1/2" most are 9/16"

Do I measure the outside of the thread or the inside of the hole?

'A' or 'B' ?

Ta.

 

[Nibor]

That being a hollowtech will be a 9/16th in my experience I have only encountered half inch on BMX bikes

 

[Ajax Bay]

Sheldon. Yours will be 9/16"

Thread Sizes

• Most pedals have 9/16" x 20 tpi threads.
• Pedals for one-piece cranks are 1/2" x 20 tpi.
• http://www.sheldonbrown.com/gloss_n-o.html#opc

 

[PeteXXX]

That being a hollowtech will be a 9/16th in my experience I have only encountered half inch on BMX bikes

Thank you.

Sheldon. Yours will be 9/16"

Thread Sizes

• Most pedals have 9/16" x 20 tpi threads.
• Pedals for one-piece cranks are 1/2" x 20 tpi.
• http://www.sheldonbrown.com/gloss_n-o.html#opc

And, thank you.

I thought they probably would be, but thought I'd check here before ordering a pair.

 

[Profpointy]

Just in case you don't know this already, one pedal has a left hand thread. Best to work out which one before you bollock it up ridiculously tight in a forlorn attempt to undo it.

 

[PeteXXX]

Just in case you don't know this already, one pedal has a left hand thread. Best to work out which one before you bollock it up ridiculously tight in a forlorn attempt to undo it.

Yep, thanks. I worked that out quite a while ago.
Also best to use a spot of lube when fitting the new ones to save them locking up.

 

[ColinJ]

Just in case you don't know this already, one pedal has a left hand thread. Best to work out which one before you bollock it up ridiculously tight in a forlorn attempt to undo it.

My mnemonic for that is 'The right pedal is right, the left pedal is wrong'! (Most bottom bracket threads are the opposite so 'Right is NOT right, and left is NOT wrong')

 

[Racing roadkill]

Yep, thanks. I worked that out quite a while ago.
Also best to use a spot of lube when fitting the new ones to save them locking up.

Very important. Unless you fancy having to blow torch them out in future.

 

[oldroadman]

Yep, thanks. I worked that out quite a while ago.
Also best to use a spot of lube when fitting the new ones to save them locking up.

Tiny bit of Copaslip or similar copper lube. A little goes a long way!