rmfrance

It has a few hallmarks of a PY10, in fact; a bit later than my own area of expertise (?) but the braze-ons, rear dropout adjusters and tubing are all very similar to my '79 PY10LC. I would select a colour from what Peugeot offered for the Izoard back then - it will look right and not devalue a premium classic bike.

rmfrance

It has a few hallmarks of a PY10, in fact; a bit later than my own area of expertise (?) but the braze-ons, rear dropout adjusters and tubing are all very similar to my '79 PY10LC. I would select a colour from what Peugeot offered for the Izoard back then - it will look right and not devalue a premium classic bike.

polymorphself 

Is that not the original paint?

jdawginsc 

Nope. Rattle can over rust spots. I think it was probably originally pearl white.

JackJohn

Just finished restoring a 1976 PX10 recently bought for a friend, only FD and headset weren’t original. Did it with some changes/upgrades to accommodate the owners’ specific needs for uphill climbing and esthetics:
- Simplex Slj retrofriction shifters
- Stronglight triple crank
- Simplex SJ triple FD
- Simplex SX410 long cage RD (completely serviced and repaired)
- Maillard Course 6s freewheel (also serviced and now turning smoothly)
- Stronglight Competition headset
The C&V forum is a huge help to solve those issues that obviously appear in these kind of works!

ehcoplex 

Very nice! I just put Retrofrictions on my '72 PX and LOVE them!
What did you need to do to the SX410? I've got a pretty rough one I'd like to rehab for a build, but haven't found an info source on how to rebuild..... (possibly not possible.... I think at one time someone didn't know Simplex RD's are unscrewed from the inside and tried to unscrew it by the pivot, so that's the first thing that needs attention....)

JackJohn

thanks, I learned a lot from this video, it’s in French but you can have English subtitles:
Then I also followed the technical scheme on the official Simplex catalogue.

In your case what happened to the hanger bolt is quite typical, it’s likely the spring inside is damaged. That was my case and I had to replace both spring and bolt, lucky I could find them on another cheaper Simplex rd that was compatible.
In servicing the SX410 the tricky part is the spring inside the parallelogram body: when putting it back, there’s a hidden hole inside allowing for the only position possible, I had to play with it a bit before finding the right one.
Also tricky was loading the springs to have a proper tension.
Hope this helps.

ehcoplex 

Thanks, this is helpful!

flipchip

Will edit this comment when I _finally_ find a PX-10 locally. 1 year and counting so far.

JesseABN

This is what I wanted to know. What’s the difference in a 1981 CFX or PXN frame…

My current project:

bikemig 

Looks like you've collected most of the pieces you will need. Very nice looking frame as well. I have a 1982 PXN 10 and I really like the ride quality. You probably know this but you can run a campy style RD on that style of simplex drop out. It looks like you're trying to build it up to catalog spec. I like the simplex sx410 rear derailleur spec'd on the bike as it can handle a 30t cog (a campy struggles with a 28T). Also if you are looking to improve your climbing gears, you could install a stronglight 99 (or one of its variants)(86 bcd) rather than the stronglight 106 (144 bcd). That way you can get better gearing. That's what I did: i'm running 50/36 upfront and a 13-28 6 speed freewheel.

AFAIK, the frame is the same (CFX 10 and PXN 10 with the difference being that the former was sold as a frame)

ollo_ollo

My 1969 PX10, a 2019 Cino veteran all spruced up now, a favorite ride as its 1st gen Phil hubs still retain their near frictionless roll, some kind of magic! Don

1969 PX10



Replacement Phil Decals

bikeaddiction1

What size is your cassette. I am about to rebuild the same bike and with the cassette on it I would not want to hit any hills. I notice that you do not have a short cage derailleur. How does it shift?

ollo_ollo

It's a 14-32 and derailleur has no issues shifting thru all cogs. Crank is a just a 52-45, but if you want very low gearing (just a FYI) I successfully paired a mountain bike, Shimano Deore, triple crankset to a 14-28 free wheel. on a 1971 Stella. That triple has a 24 tooth granny. . Don

ehcoplex 

There's also the Red Clover Triplizer option, if one want's to keep the Stronglight 93!

ollo_ollo

For sure, but the $$ add up quickly compared to cost of a used mtb crank from your local co-op. ($10-$20), one could even pickup a long cage derailleur for cheap-BF'rs like cheap parts...

bikeaddiction1

I would like to keep the biker as original as possible. It still has the original Normandy hubs, so I'm not sure what freewheel I can find for that. The bike is all original except that the original owner swapped out the 27 " rims for 700c to make it easier to find the tires he wanted.

ehcoplex 

I'm prepared to be wrong about this, but I don't believe 27" rims were ever original on PX-10s of that era. AFAIK, they came with 700c tubular wheels, though sometimes those were replaced with a clincher wheel set by the shop at the time of original purchase, if the customer didn't want to deal with tubular tires- and in that case it very likely went out the door with 27" rims. Point being, 700c would've actually been 'original', though they'd have been tubular rims.
Your choices for French-threaded freewheels (which is very likely what you need if you've got the original hubs) are going to be pretty limited, and even more so for something that will get you some lower gearing for hills. If you want to stay as original as possible, but have some more sane gearing, the Red Clover triplizer is the way to go. Yeah, it's $$, but you get to keep the beautiful Stronglight 93 crankset. Though you'll also need a new, longer spindle for the BB (IIRC it's a swap from 118 to 121, though I might have this wrong- the specifics are on the Red Clover site). However, if you go for a triple then the original RD probably won't have the chain wrap capacity, so you'll need to upgrade to an SLJ GT or similar.... The fact is that, as originally equipped, a PX-10 isn't really geared for hills (unless you're young and even then, extremely strong!)- if you want rideability, you're gonna have to make some compromises.

bikeaddiction1

That makes sense, thanks. He said he had new rims laced onto the hubs because he did not like the tire selection. I just assumed he meant to go from 27" to 700c, but it was likely tubulars then. He actually gave me the bike. The bike is in pretty good shape except the LH crank arm square taper was badly damaged and I just found a new one for about $85 Canadian including shipping, and the absolute cheapest I could find in decent shape. I will have to open the pedal threads to imperial units as the pedal treads where rough and the new one is that way anyway. So won't be using original pedals.

I am not sure I will keep the bike when it is done as I already have a mint 1977 PY-10 with gold anodized components, nice enough that I hang it on the wall in the house and only really ride it occasionally. I enjoy the rebuild and would like to keep the PX-10 original (except the rims of course). I live in a somewhat hilly area so gearing it down would make it more ridable for me or any future owner. I may see if the original owner wants it back when he sees it finished. He bought it new.

I see Red Clover also has a 37t small chain ring. I need to check if the front derailleur has the capacity for that without going triple.

Insidious C. 

The 1974 Peugeot brochure has an inset on the px10 page showing a model called ux10. The ux10 was identical to the px10 except it came with 27x1-1/4 wheels and tires. Schrader valves no less.

bikeaddiction1

Thanks for that information. I will need to ask the original owner what rims it had when new. I was pretty clear that it was a PX-10 so I assume he had the tubular wheels swapped out.

ehcoplex 

The guy I bought my '72 PX-10 from claimed to be the original owner and that it was 'all original', yet it had steel 27"Rigida rims and Normandy Sport hubs (and a GIANT dork-disk), and had 'safety levers' on the Mafac brake levers! Not to mention it appeared the front derailleur was completely mangled and appeared to have been sucked into the chainrings at some point! But the price was right and I had plans to mod it anyway (650B, etc).

bikeaddiction1 , does yours have the original Delrin front derailleur? Somewhat rare to find one of those that hasn't cracked- would be interesting to know if it could handle a triple. The all-metal SLJ models can handle a triple- even the ones that aren't specifically spec'd as being for a triple. Not original, but still French/Simplex, and I think was a pretty common 'upgrade', especially if/when the original Delrin FD cracked.

bikeaddiction1

I know the original owner and he gave me the bike so I am confident that he is the original owner and knows the history of the bike and has no reason to tell me anything else. He originally wanted me to modernize the bike but did not like the options for getting modern derailleurs on it.

I believe it does have the original Delrin front derailleur (the one that slides sideways?). It is not cracked although the plastic does look dried out. I don't think I would go the triplizer route due to cost and as my vintage bikes (down to about 8, all road bikes, all XL, my size) are more of a hobby and I ride mountain, gravel, touing more and I have modern bikes for that. I am going to try to find a wider range cassette though.
The vintage bikes are just cool, fun to work on. and fun to ride on occasion.

ehcoplex 

Agree 100% with all but the last two words! All my bikes are 'vintage' and I ride 'em all the time & just about anywhere! But, as always, to each their own, as long as one is having fun!

JochenRindt

My dad had a '72 PX-10 from new until '79. Growing up, I heard a lot about how light and quick it was, so naturally the PX-10 assumed a near mythical status in my mind. So when I got into cycling in 2004, getting a PX-10 became something of an obsession. I never managed to find one in my size and for the right price, so I had to content myself with an '80 PKN-10 and an '82 PSV-10. Although I would still like to have a PX-10, the desire has been largely satisfied by the '81 Motobecane Le Champion I recently bought. At this point, if there is another grail bike to be had, I think I would love an early to mid '80s lightweight Gitane.