Bicycle Mechanics - vintage Campagnolo on newer set up
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05-23-11, 02:50 AM
I have a vintage Campy Victory group that I got a few years ago.
Eventually I would like to put it on a new bike with a Chris King Disc rear hub.
1. Since King doesn't make a Campy compatible hub I plan on running a shimano splined one. I assume the spacing incompatibilities only come into play due to indexed shifting. Is this correct?
2. I've used plenty of newer derailleurs for friction shifting. But I've never tried to take an old derailleur and use it with a newer higher range of gears. I was thinking an 8 speed friction shifting set up for this. Do derailleurs from the 80s travel enough to facilitate that many cogs, particularly Campagnolo Victory.
before anyone asks me what kind of bike this is, I'm basically planning on building up a randonneuring style frame with the vintage group I have sitting around, and disc brakes. : )
Wow, what you're proposing is really weird. Usually it's new gear on an old frame, for good reason - the gruppo is responsible for much of the increased performance of bikes over the last few decades. Then there's the aero wheels and fat bars, stems and downtubes...
Anyway, 1: yes.
2: you should be able to measure the derailleur's travel by fitting it to a frame, backing off the limit screws, and eyeing it up against a ruler. If you look at Sheldon's spacing table (http://www.sheldonbrown.com/cribsheet-spacing.shtml), you can see Shimano 8spd travel is 33.6mm (cassette width of 35.4 minus cog width of 1.8mm, or spacing of 4.8mm x 7 shifts). But all 5 & 6spd systems were less than 30mm and as low as 22mm, so you may be pushing it. I'd get hold of an 8spd Shimano wheel to see if it'll work, cause even if your derailleur has enough travel, it might be past where you want the limit screw on one side, and not extend to the furthest cog on the other.
05-23-11, 04:30 AM
yeah, definitely a strange set up, but at this point I can get a shop discount, because I work for the manager (not at the shop), so I'm thinking of getting a good pricey hubset and other wise using the components I have in the meantime
05-23-11, 07:37 AM
Sounds like a great project. I built up a NOS late '80s frame with NOS Triomphe/Victory group last summer. I did however use shimano 7spd cassette wheels and have no shifting issues on a 12-23. I think it will go 8 but never tried it.
what front derailleur are you using? I am doing something simiar trying to put late '80s Chorus on 09 frame but the brazeon FD does not seem to be in the correct position.
why the disc brake?
05-23-11, 01:03 PM
Want all weather braking?
i highly recommend using a drum brake hub instead..
then the frame does not need special braze ons
and you still get excellent smooth braking in any weather..
I have been using a Sturmey UK drum brake hubset for decades, 7 speed freewheel,
now they, the re formed in Taiwan company, offer a cassette version ..
thinking out loud, in type. ...
Not Chris King made, but a double freewheel flip/flop hub can be converted to disc brake.
there are parts to put a 6 bolt disc on threaded for a drag brake tandem hub,
and someone who can measure things can set one of those up, get the alignment right.
even put a multi-speed freewheel on the opposite side. longer axle of course.
if you start with a narrow track 110 width hub, there are possibilities..
05-23-11, 03:38 PM
Campy Victory derailleurs are friction shifting only, so it really doesn't matter what brand or type of cluster you use.
As noted above, the Victory rear derailleur may not have enough travel to cover more than 7 or 8 cogs in the back, so purchase accordingly.
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