Lyotard Pedal Question
 

I am in the midst of restoring my Bertin. The cranks on it are TA cranks that had Atom 700 pedals mounted on them. I picked up the Lyotard pedals below thinking that they would fit but the threading seems to be different. Does that make sense? It seems as though the TA crank is French threading and the Atom 700 are the same but the French Lyotard pedals are not French threading? I guess this also means I won't be able to thread on my Look clipless pedals either (I can't do toe clips much anymore and was hoping to put the Looks on for long rides and Lyotard for short rides).

Cheers,

Guy

http://gallery.me.com/danspeirs/1009...13383569250001

Lyotard made non-French threaded pedals. You likely have one of those.

You could retap your cranks if you are serious.

x2, i have the same pedals and they are 9/16

I have French and 9/16" Lyotards. I'll probably never use them all.

What will it take to get the 9/16 pair sent my way?

I would love to find a pair of those in french thread for my Gitane!

Top

In my very limited experience, if the pedals are French, the ends of the axles will have incised D (roite) and G (auche) rather than R and L.

The No. 23 pedal was available with 14x1.25, 9/16" x 20 or 1/2" x 20.

Tapping the TA cranks to 9/16" is easy (they're soft). Punch the little aluminum disc out, use plenty of oil and good taps and it's a job done in under 10 minutes.

My LBS recommends soap as a lubricant for tapping aluminum cranks. There's a reason why, just can't recall it now.

To avoid galling on the tap.

TA, Atom/Maillard, Lyotard, Stronglight, etc. all made equipment with both French and English threads, so it's also possible your cranks are English and the pedals French. I have a set of MB23 pedals with 1/2" threads as well, I have no idea what they were intended for.

Thanks for the reply. When you say "Punch the little aluminum disc out" which AL disc are you speaking of?

GG

I've heard the Lyotard spindles are all the same. If true (I haven't tested), swap English for French from another pair.

Kroozer, your 1/2" x 20 Lyotard MB-23s are meant for one piece(ashtabula) cranks. It's nice to score them unused, and swap spindles from a cheaper used pair of regular/al MB-23s. I also tip my hat to Fat Freddy's cat.

Those mod. 23 pedals came in English, French, and American (1/2" x 20tpi) threading. The good news is that spindles from the Lyotard 45CA pedals are interchangeable, so if you can get a set of those with the proper thread, you're golden:

http://www.bikeforums.net/showthread...als?highlight=

See the pics. The little disc/cover is sometimes missing from the backside of the cranks. You have to punch it out in order to run the tap all the way through.

Before Removal

http://gallery.me.com/justinhughes/1...13232891530001

Removed

http://gallery.me.com/justinhughes/1...13244779280001[/

Somewhat off-topic, but I have a NOS pair of Lyotard 460D (alloy rat traps) with 1/2" spindles. Anyone know what other Lyotard model uses the same spindle? I'd love to find 9/16" replacement spindles without having to pay the hefty price that 46d's tend to fetch.

Thanks everyone for the input. A buddy tapped the cranks tonight and they came out great!

GG

Maybe that's why my cranks sold for more than I expected on the bay, they were 9/16x20 with their caps intact.

The caps are easy to put back on after tapping them. Not sure if they will look as clean though.

GG

Does not make any sense. I've been working as a Professional Automotive technician Specializing in Automatic transmissions for over 40 years. I have tapped and repaired hundreds of stripped threads in Aluminun. I have always used oil, and have never had a problem. I wouldn't use Soap on a bet.
I have tapped two sets of cranks, used oil on the taps then too. Oh, I used soap to clean up the mess I made.

You have to make sure the pedals have short threads or they will push the discs out from inside. I think Lyotard made a version of some models especially for TA cranks.