drewrockstarr

Hi recently bought a late 70s Peugeot road racer-type bike. I want to replace the pedals that are very rusty. They are not original to the bike. Looking at photos of other vintage Pugs, most came with Lyotard pedals. Are Maillard better? What of the French thread size versus American or English bikes? Hope new bikes have universal thread size now. Thank you as ever for help :-)

oddjob2

You might by an $8 tub of Savogran wood bleach powder, from the hardware store. Make up a quart and soak the pedals overnight. Also Evaporust.

drewrockstarr

You might by an $8 tub of Savogran wood bleach powder, from the hardware store. Make up a quart and soak the pedals overnight. Also Evaporust.

Thank you. I will look for same or similar product here in London. Will I need to regrease the bearings?

oddjob2

The soaking doesn't affect the existing grease. At least a squirt of lithium grease.

Salamandrine 

They probably would have been Lyotard rat trap pedals, but they could have been Atom. It could probably be looked up if you are concerned with the exact ones. Both were sold as general replacement pedals for all bikes through the 70s and into the 80s, and were available in French or English threads. Your Peugeot would have come with French threads. The cranks may have been retapped if you have some non french looking pedals on there now.

juvela

The OEM pedals on your U08 would have been Lyotard model 136R:

drewrockstarr

Thank you all for your advice. I read about retapping. Does that totally ruin the tread. I'm afraid to take them off now...

Iowegian

If done right you will never know they were re-tapped and the pedals will go on/off and stay put just as they originally did. You can damage the threads if the pedals were installed without grease and have become bonded to the crank via galvanic corrosion. Even if this occurs, re-tapping should make them almost as good as new although you can't really replace the aluminum that will come out with the pedals.

So...don't worry. Just remove the old pedals, try to de-rust them if possible. Or get new pedals of the appropriate threading and install them with grease on the threads.
If you do decide to re-tap the cranks, remember that the left pedal uses left-handed threading, so you will need both right and left handed taps. Any bike shop should have a pair of these if you decide to re-tap.

The Golden Boy 

I have 3 sets of Stronglight cranks, all 3 were tapped for "regular" pedals when I got them.

If'n this is a rider (I'm assuming with rust on it-it's not a museum piece), I'd definitely tap them.

drewrockstarr

Thanks all so much. The information need to know and learn on vintage bikes is never ending. You can get a masters or PhD in bikes :-) I am lucky there is a guy in Brighton UK where I moved to that's specializes in fixing vintage bikes. I will have him.look at the pedals the other mechanic put on. The bike is a late 70s Peugeot 5 turn 7 gear road. Photos uploaded in 70s Peugeot worth $120? Thread. For now will just put up with the very rusty pedals. On the other hand, the PSV I am collecting next week I will only use in summer when it's dry out. She is a beaut and definitely protect her from rain. Will definitely post photos when I get her.