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Campagnolo hub advice. Are they strong?

Old 05-04-22, 01:50 AM
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Soody
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Campagnolo hub advice. Are they strong?

This is a singlespeed wheelset i got a while ago.
32 spoke, campagnolo hubs, mavic open pro rims.

I want to try and re-space the axle/dish the rim to fit a multi gear freewheel
The bike will be used for trail riding and touring
What do you guys reckon, are these hubs strong enough?




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Old 05-04-22, 06:53 AM
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Looks like a Victory or Triomphe hub, laced three cross. Should be strong enough for anything except perhaps gonzo off-road riding.
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Old 05-04-22, 07:25 AM
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Sure looks like this hub has been respaced to best serve as a single speed one, from the multi speed freewheel spec that it came as from the factory.

The hub shell will be strong enough but with a rather "unbalanced" axle spacing that the freewheel spec will need will be FAR more likely to bend/break axles right at the drive side axle cone's inner edge. One trick to reduce the uneven axle spacing is to spread the frame to 135mm and install a long enough axle. Space the drive side as usual with just enough axle for the freewheel to clear the seat stay and all the rest of the spacers on the left side. This will also require a redishing to keep the rim centered WRT the frame. Andy
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Old 05-04-22, 08:24 AM
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Originally Posted by Soody View Post

I want to try and re-space the axle/dish the rim to fit a multi gear freewheel
The bike will be used for trail riding and touring
What do you guys reckon, are these hubs strong enough?
If you want anything more than a 5 speed freewheel you should consider a wheel with a cassette hub
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Old 05-04-22, 08:32 AM
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Freewheel itself does not make for a very strong wheel (axles can bend more easily than with freehubs).
Re-spaced singlespeed hub conversion makes things even worse - your left hand side spokes would need to be quite loose (low tension), and right hand side spokes super-tight.

So, for a (loaded?) touring bike, that would not be my first choice.
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Old 05-04-22, 10:32 PM
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Looks like you have quite a bit of room on the ds of the hub/axle already. If the dish is perfect now, add a 5-speed freewheel and see what kind of clearance you have. You may not need to redish at all.

Folks toured for decades using 5-speed freewheels. You don't have to put all the weight on the back end. There are lots of current options for bags. And if you can run 32mm tires, the cushion will surely help axle reliability.
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Old 05-07-22, 01:00 AM
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Thanks all.
I hadn't considered that it might be stronger with this SS dish/spacing. I'm gonna try find a narrow 5spd freewheel and see how that fits and until then run a garish cassette wheel
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Old 05-07-22, 09:38 PM
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Originally Posted by Soody View Post
I'm gonna try find a narrow 5spd freewheel.
What's your current hub spacing? Is it 120mm?

Modern 5-speed freewheels (from IRD or Sunrace) can be almost as wide as 6-speeds (for 126mm o.l.d.). So, maybe look for an old Suntour freewheel and go from there. If you don't have a co-op or can't find one local very easily, check the ISO thread sticky in the c&v subforum. One in good shape shouldn't cost you $15.
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Old 05-07-22, 10:22 PM
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Originally Posted by SurferRosa View Post
What's your current hub spacing? Is it 120mm?

Modern 5-speed freewheels (from IRD or Sunrace) can be almost as wide as 6-speeds (for 126mm o.l.d.). So, maybe look for an old Suntour freewheel and go from there. If you don't have a co-op or can't find one local very easily, check the ISO thread sticky in the c&v subforum. One in good shape shouldn't cost you $15.
thanks I will look for one, if not for this, for another bike.
Its 126
130 wheel fits in there easily, it's kinda garish but ok for now.


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Old 05-07-22, 11:29 PM
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Originally Posted by Soody View Post
It's 126.
Then I'd forget the 5-speed and go with 6.

Looks like a nice frame.
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Old 05-08-22, 01:12 AM
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Originally Posted by SurferRosa View Post
Then I'd forget the 5-speed and go with 6.

Looks like a nice frame.
cheers its a shogun
i think its gonna be pretty sweet

about the whole axle thing, i haven't really ridden much on bikes with threaded hubs. But i've encountered bent axles with them a lot on other people's bikes and things i'm fixing up .
I know that cassette hubs are stronger, but i wonder how much of that is the inherent design, and how much is the fact that most of the threaded hubs that exist now are very cheaply made?

I've got a few nice ones, suntour XC pro, and this campy hub, i want to use both of em because the bearings feel so good and they look good, so i guess i'll find out but yeah.
Design vs quality?
How serious an issue was the axle bending thing on nice bikes back in the day?
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Old 05-08-22, 08:04 AM
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Originally Posted by Soody View Post
about the whole axle thing, i haven't really ridden much on bikes with threaded hubs. But i've encountered bent axles with them a lot on other people's bikes and things i'm fixing up .I know that cassette hubs are stronger, but i wonder how much of that is the inherent design, and how much is the fact that most of the threaded hubs that exist now are very cheaply made?
How serious an issue was the axle bending thing on nice bikes back in the day?
The big design advantage that cassette hubs have is that the driveside bearing is moved further out towards the side of the hub which creates a wider distance between the L and R bearings giving less leverage to bend/break an axle. Better freewheel hubs usually had better quality axles as well but they still bend/break occasionally. For loaded touring and bumpy trail riding personally I would feel much better having a decent cassette hub. If you do stick with your campy hub get a good quality axle such as these from Wheels Manufacturing Hub Axles (wheelsmfg.com) Also check that the alignment of your dropouts is perfectly square as even slightly off can cause a bowing pressure on your axle when clamping the quick release and shortening the life of the axle.

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Old 05-08-22, 09:53 AM
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Originally Posted by Soody View Post
i haven't really ridden much on bikes with threaded hubs. But i've encountered bent axles with them a lot on other people's bikes.
Interesting. In the time I spend over in the C&V subforum and with my friends riding and discussing our vintage road bike collections, the subject really never comes up. In the last dozen years, I've broken one axle, the original rear on a 50-year-old grocery getter.
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