does anyone know a definitive list of bike companies that used rear simplex dropouts during the 70s--and if possible the models that were produced with the forged simplex dropouts.

thanks.

I doubt such a list exists, so let's start one. I'll post one (incomplete) starter, everybody who can add more just copy/paste/add your info:
make-------model -----------year(s)
Gitane; Tour de France; 1971-1975 (?)
Mercier; 300; early 1970's

My St. Etienne (model and year unknown) has them.

Neal

Peugeot PX-10
LeJeune F70 aka Pro

Gitane Tour de France

Le Jeunet, forged, no built-in hanger.

-Kurt

and PR-10/PKN-10, possibly PA-10, as well

My '74 PA10 has forged Simplex dropouts with an integral hanger. The dropout on the non-drive side has the wheel guide that I've only seen on earlier PX10's.

there's a related question: was there an early set that included the "finger/wheel guide/chain-tug" dealie on the nondrive side DO, but was eliminated on a later version? ( a picture of what I'm talking about would be helpful here, but I don't have one myself)

See my post directly above yours. I guess I didn't describe it as well as you did.

Your post is what inspired my question, as well as a further question. Here's a pic that shows the "finger" in question (I lifted it from the Wool Jersey site so credit and thanks to Morgan Fletcher, it's from his 1963 PX-10):

Now, I have added a yellow block that indicates the area where the word "SIMPLEX" is often cast into the dropout, unlike this where it's engraved in the flat face of the clamp area. Anybody know more about the dates when these 2 different treatments were used, or whether it's actually 2 different styles of forged DO? (Morgan's is stamped LJ Simplex)

FWIW, my 60s Dutch JOCO frame has simplex dropouts. No hanger, and just one braze-on for a 5 speed derailleur.
Cheers - Jeff

Which companies used Simplex dropouts during the 70s? Wow, that would be an extremely long list. For starters, I would imagine every single manufacturer of bicycles in France would qualify. I've seen them also on Dutch, Belgian, Spanish, Swiss, even Italian as well as on many Raleighs models... So, probably thousands of individual bicycle models. A MUCH longer list than models which had used Campagnolo dropouts.

Pretty much every company in Europe. It is rather like asking which models during the 70s had used one form or another of Reynolds tubing. Seriously, Simplex would probably qualify as the single most popular dropouts used throughout Europe during the 70s. And even the dropout models with integrated derailleur hangers were available with either threaded or non-threaded (the latter mainly, but not exclusively, found on French bikes).

I had no idea that they were so common, here in the US I don't see them very often and didn't see them often in the past, so I always take note when I do.
BTW, here's a pic of a late (early 80s?) version with integrated hanger courtesey of miamijim's excellent Peugeot site, this version had the dropout adjuster screw that threaded thru a "trapped" black plastic plug (not shown in this pic):

@unworthy ..
i had the same set up on my Peugeot pa-10.. which now has threads + derailer tab .
ahh the modern age of machines..

//Cheers T

Have you not heard of the revolutionary Campagnolo 1010?

-Kurt

Sorry to dig up and old thread - but I am trying to solve a problem I have on a 1989 Peugeot that has adjustable Simplex Dropouts -

"this version had the dropout adjuster screw that threaded thru a "trapped" black plastic plug (not shown in this pic)" quoting unworthy.

Can you still get the plastic plugs, nuts anywhere?

Or is there a substitute. Mine on the drive side has split, making aligment of the back wheel when replacing it that much harder.

miamijim may have a source for them, but I'd just make a replacement myself out of a black plastic rod (nylon, acetal, ABS, what-have-you): cut, drill and tap to fit. www.smallparts.com is an excellent source for small lengths of plastic (and much more) here in the US, perhaps they ship worldwide.

1987(?) Peugeot Paris Express:

this is by no means a comprehensive list. generaly the high end french bikes built of reynolds tubing (even though there are quality french tubes) like the peugeot px -10 or motobecane le champion these would have unthreaded simplex dropouts. huret used to make a nut that allowed you to mount a nouvo record in a simplex dropout. a more elegant solution was to tap out the dropout, i used to work in wakefield, ma & there was a shop that did retail sales of metric taps & dies, you will still need to file a stop. this option is probably more viable when consider how much trouble you would have finding the huret nut. i do not have any details about this nut, in the 1970s one of friends in the club used to ride a px-10 with a nouvo record rear derailleur & i haven't seen guy minnick in 25 years.

my dad's '51 Girardengo has them, too.

PICT0002..JPG

le june? or jeunet? i didn't think the companies merged .

these are the dropouts on my 1972 jeunet (drive side has no hanger):

And just to take us down another tangent, what about the clamp-in wheel stops for the older non-drilled dropouts? Seems like they were exceedingly common back in the day, but now are more like hens' teeth.

SP
Bend, OR

Huret made an adapter that would allow using a Huret derailer on a Campagnolo hanger, but I can't imagine a nut that would allow mounting a Campagnolo derailer on a Simplex hanger. A lot of material has to be removed to make the Campy derailer fit. It's not just to make a stop, you have to make clearance. It doesn't make sense that they would make an adapter to fit a competitor's derailer on another competitor's hanger.

My mistake. Jeunet.

-Kurt