WTD: Mavic Open / Campag 8spd Veloce (or similar) hub - Rear

[rjsdavis]

Hello to all

Am after a single 700C rear wheel for my son to use on his road bike and new indoor turbo trainer - he's currently running 8spd Campag Veloce (already got him well embedded on the retro bike thing!).

Ideally, it would be a Veloce 8 speed cassette hub on a Mavic Open 4CD/Pro or very near similar rim please, so that swapping over this wheel with his outdoor training wheel, will require no adjustments to the rear mech or brakes. (Happy to get the hub and rim separately if need be, and I'll build the wheel!) - spoke number is irrelevant really.

Condition is obviously less important on this one, as it's going to be used specifically as a turbo training rear wheel only.

Look forward to hearing from you.

 

[painter]

Hi, you may find it easier to get any shimano hub with a 7speed set up - it works perfectly with campag 8 (same 5mm spacing). you may find it goes straight in with no adjustments, you've just lost a gear. Why would you put your poor son on a turbo trainer anyway?

painter

 

[rjsdavis]

Why would you put your poor son on a turbo trainer anyway?

His choice - not mine.... and I won't let him use my Revolution!

If Shimano 7 is compatible with Campag 8, then surely Shimano 8 would work as well and not lose the gear?

 

[kbmpi]

I'll speak against myself, as I'll have an 8spd wheelset up for sale soon, but...

1. shimano 7speed works perfectly
2. shimano 8speed worked for me without adjustment.. just put the wheel in and the indexing was perfect on a 50km ride
3. campagnolo 8speed exa-drive sprockets slide onto modern freehubs as well. you just have to use some sort of protection in order that the cogs do not grind into the freehub body material.

personally I'd say, any 9-10-11speed campag rear wheel will work with 8speed exa drive sprockets and the appropriate lockring. just make sure you put some steel plate under the cogs or something to protect the freehub, and youll need a spacer to take up the extra length of the freehub body.

Shimano setup would work well (setting up indexing from the middle of the cassette, the derailleur adjuster screws will limit the extreme range of the mech, and the jockey wheels will have some free-play to take up the slight imperfection in spacing..)

I would not buy any 8speed wheels for the task..

http://s778.photobucket.com/user/london ... 2.jpg.html

 

[rjsdavis]

1. shimano 7speed works perfectly

Surely the rear mech will shift straight off the end of the range (presumably at the spoke end of the freehub), if you're shifting with 8spd Campag Ergo's on a 7 speed Hyperglide block? I just can't see how this would work, and be indexed correctly, across a 7 spd block without any adjustment, and this is the point - I just want a spare wheel to pop into the bike for his turbo training sessions (with a turbo tyre on it too), so that the outdoor wheel goes back in afterwards, without any adjustments required at all - adjustments are far too much faff, and we all know that this will lead to no training being done. :-(

2. shimano 8speed worked for me without adjustment.. just put the wheel in and the indexing was perfect on a 50km ride

Ok - this would be ok. I don't mind sticking in an old Ultegra hubbed based wheel just for the turbo!

3. campagnolo 8speed exa-drive sprockets slide onto modern freehubs as well. you just have to use some sort of protection (?) in order that the cogs do not grind into the freehub body material.

Thanks for this suggestion and the pics - but this doesn't look sensible to me. There's very little surface contact between the splines of the cassette and the splines of the freehub in the pics you've posted, as they're clearly not intended to go together. We've all seen Shimano and Campag freehubs that have suffered from "cassette rip" over time, where the torque put through the block has eaten chunks into the freehub body - and this is with the correct cassette on the correct freehub body! With so little contact area - if you were knocking out anything north of 250Watts on an effort, I wouldn't trust that cassette not to "give" on the freehub body.

Shimano setup would work well (setting up indexing from the middle of the cassette, the derailleur adjuster screws will limit the extreme range of the mech, and the jockey wheels will have some free-play to take up the slight imperfection in spacing..)

But doesn't this contradict your Point No.2 above? The whole point is not to have adjust anything at all with wheel swaps....

I would not buy any 8speed wheels for the task..

Thanks - why do you say this?

 

[kbmpi]

well, the sh8speed wheel worked like a charm for me, but theoretically it really should not That's why I described the way that you ideally would set it up. BUt it worked for me without hassle, so, it's probably not even neccessary, I just thought, you'd appreciate a detailed description of the "official way"..

 

[rjsdavis]

Thanks - particularly for posting at 0600 hours on Christmas Day!

However, it leaves a lot unanswered, so I suspect I'll just stick to a Campag 8 speed hub based wheel that is known to be perfectly compatible....

 

[kingbling]

I think I have a 8speed campy hub will go to lock up tomoz and find out

 

[rjsdavis]

Bump

 

[kbmpi]

http://www.ebay.com/sch/attitudemetal/m ... 7675.l2562

http://www.ebay.com/itm/Campagnolo-Athe ... 541822de00