What replacement forks for a 1960's Peugeot PX-8?
08-12-16, 11:50 AM
#1
Newbie
Thread Starter
What replacement forks for a 1960's Peugeot PX-8?
Hi C&V!
I unfortunately suffered a catastrophic fork failure due to fatique on the forks caused by a drum brake in a downhill section near my home going out for a ride
What forks do you suggest for a lugged frame? It is a 58 cm frame, and I have no idea of what the axle to crown measurement is? It fit 35c tyres well. I guess around 400mm?
It is in this thread: https://www.bikeforums.net/classic-vi...ed-cranks.html
Thanks in advance
I unfortunately suffered a catastrophic fork failure due to fatique on the forks caused by a drum brake in a downhill section near my home going out for a ride
What forks do you suggest for a lugged frame? It is a 58 cm frame, and I have no idea of what the axle to crown measurement is? It fit 35c tyres well. I guess around 400mm?
It is in this thread: https://www.bikeforums.net/classic-vi...ed-cranks.html
Thanks in advance
Last edited by Kuupola; 08-12-16 at 12:01 PM.
08-12-16, 02:40 PM
#2
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The fork in the pictures looks like a standard U08 fork would be a good match. The important measurement is the steer tube length. The axle to crown length doesn't change with frame size.
08-12-16, 03:27 PM
#3
Keener splendor
Strip the parts and throw it out. Get another frame.
08-12-16, 05:26 PM
#5
feros ferio
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Bikes: 1959 Capo Modell Campagnolo; 1960 Capo Sieger (2); 1962 Carlton Franco Suisse; 1970 Peugeot UO-8; 1982 Bianchi Campione d'Italia; 1988 Schwinn Project KOM-10;
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I think mine are generic Japanese replacement forks. (I bought my A/U-O8 as a bare frame when I worked at a dealership.) The smaller-than-stock rake causes toe-to-tire overlap if I use 170mm cranks with a 27"x1-1/4" tire in front. It never bothered my wife when it was her bike, but our elder son complained bitterly about the overlap, so I swapped in the 165mm cranks (shown) and a 700C front wheel (not shown). The ride is smooth, and the handling is very predictable, with no shimmy or twitchiness, even in a crosswind. This is a VERY easy bike to balance and ride, and a superb all-rounder.
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"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
08-13-16, 03:44 AM
#6
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If you use a non-French fork you will have to buy a non-French headset. Your French stem will no longer fit properly and replacing the stem means replacing the bars because your stem has a 25 mm bar clamp. You may very well destroy the handlingof the bike if you choose the wrong fork. You will certainly destroy the collector value of a very rare bike.
08-13-16, 06:40 AM
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Hope you are ok!!! I won't consider putting a drum brake on a vintage now. 
08-14-16, 08:23 AM
#8
Newbie
Thread Starter
Now this frame was set up as a commuter with a coaster brake in the rear and a drum brake in the front. I like it because it feels quite light and nimble. And the tubing does not seem to be crap aswell, with the seat tube at 0,7mm wall thickness. And it looks crappy enough with a bit of rust and chips, does not attract thieves.
I was thinking along the lines of a modern steel fork, like a Surly Cross Check fork and a Magura brake in the front. 1 inch threadless headset work fine on a French frame? Can someone measure the axle to crown on an UO8?
08-14-16, 11:06 AM
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Pretty sure you get the fork measurement from the head tube; then stack height for the headset. Other than a 700 vs 27 wheel. Someone in the know should join in soon.
08-14-16, 10:45 PM
#10
Senior Member
As mentioned before, axle to crown is not an issue. Even for a 700c vs 27" wheel I don't think it will change. I'm not 100% sure about the dimensions of the ID of a French head tube but I don't think it is different than 'normal' tubing so yes, a threadless 1" headset will probably work. Worst case you might need to get it 'prepped' at a good bike shop but chances are it will fit without issue.
08-14-16, 10:53 PM
#11
Senior Member
Edit to add: I agree with Grand Bois that you should really think about keeping the bike somewhat original. If you replace the fork with a threadless one (and replace the headset and bars) do keep as many of the original parts in storage, just in case you want to restore the bike someday.
