Can anyone help me with this?

I bought this a few months back for a buddy who's always using my Campy crank extractor. However, first (and only) time we used it we realized it's reverse-threaded. In other words. to extract the crank off the BB spindle, you have to turn the peanut-butter wrench counterclockwise.

Is this a French application (everything else thread-wise from the Frogs is back-asswards, don't you know)?

Since I have no use for this, I figured I'd put it up on Ebay but would like to give some details. Thanks for any enlightenment I recieve.

It was used on the cranks that were fitted with self-extracting crank bolts in the mid-80's. I am sure of its use on C-Record, Victory and Nuovo Victory and I believe also one the Croce D'Aune. When the self-extracting bolts are fitted, you would never need the threads. I have never seen the self-extracting bolts to fail.

Is this a French application (everything else thread-wise from the Frogs is back-asswards, don't you know)?

If by "back-asswwards" you mean left-hand thread, the only left-hand thread components I am aware of are British-threaded BB fixed cups, Swiss-threaded BB fixed cups, and all left-side pedals produced in the last half a century, regardless of country of origin.

French (i.e. Metric) threading was never backwards in any application, except for pedals, as noted.

It appears you have an example of a tool with a weird, back-assward Campy-only application. It is most probably Italian threaded.

Thanks for the C-Record application information - I will go with that in my description!

Grifone37: no, my reference was to the fact that the French used metric unlike anyone else and that nothing is compatible thread-wise but French/French (unlike the way Brit/Italian can screw on the same freewheel threading, for instance). Since I recently finished a Mondia with French threading and had to go through some headaches locating everything I kinda like to poke fun at stuff from there

Victory, at least, was NOT reverse threaded

My memory says C-Record and Croce D'Aune only, late '80's timeframe. That's when I worked at Euro-Asia Imports and we were swimming in the weirdness as Campagnolo tried to battle back from Shimano's onslaught. Some of it was OK (I liked the Centaur crankset, in particular), but a lot of it was disastrous. Euclid brake levers, anyone?

I have a friend's bike with Victory crank in front of me with the reverse threaded self-extracting bolt lock ring. My guess is that the bike is from 1984. If you also look in the 1986 Nuovo Victory catalogue, there is also a photo of the self-extracting bolts that shows a reverse threading...

Could be that Balindamood had/has a Triomphe set.

-Kurt

Damn, Kurt - you're up late!

Yes it was. My RB-1 (heavily modified at time of purchase) has a victory crankset on it, without the extractor bolts fitted. I wanted to swap it out for a stronglight the other day and couldn't. Lucky me there is a bike in the shop right now for a tune up with that crankset with the self extracting bolts fitted. I think I'm gonna have to borrow them.

Who said I'm more awake than I'm asleep?

-Kurt

P.S.: I don't believe any reverse-threaded (or contrary) Victory/Triomphe claims without that respective poster showing his or her crankset. Too many folks get Victory and Triomphe confused to know exactly what's being discussed.

I can't remeber, they look identical, Triomphe on an '85 PSN10 and Victory on an '87 PSN10. Victory came with the extractors, Triomphe did not. Bought two sets before I could get the Triomphe fitted. I have both cranks somewhere in the barn. Will have to go on a mission tomorrow.

If I am not mistaken Triomphe and Nuovo Triomphe were never supplied with self-extracting crank bolts by Campagnolo...

The extractor threads were left hand so that the retaining ring/dust cap would tighten when loosening the bolt. With a right end thread, loosening the bolt could unscrew the retaining ring/dust cap if the friction between the two was too high. If you didn't notice this, it would be possible to strip out a few threads. However, I have yet to hear of this happening, though there have been reported cases of failures with Campagnolo's self-extractor bolts. Another problem with Campagnolo's bolt is the 7mm recess, a relatively uncommon size.

When we're talking unconventional thread systems, the Italians are far worse than the French. Their bicycle threads combine a metric major diameter with an imperial pitch (i.e. 36mm x 24TPI). That is extremely poor engineering practice. Then on top of that they use the Whitworth 55 degree thread angle.

Correct - yet confusion still exists.

Extractors installed or not, they are similar - but not identical. These beautiful photos from jamesleland on Velobase serve to explain:


https://velobase.com/ViewComponent.as...892c2&Enum=115


https://velobase.com/ViewComponent.as...2c1d8&Enum=115

-Kurt