disc hub on a v brake bike
03-25-09, 11:14 AM
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disc hub on a v brake bike
The rim on my rear wheel (v-brake) has just split, and the wheel the bike shop is recommending I replace it with has a hub which takes disc brakes. It works in the bike, fits and all that stuff. Is there any reason why this isn't a good idea, or is it fine to have a disc brake hub in a v-brake bike?
Many thanks
Many thanks
03-25-09, 11:21 AM
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Well, unless you are switching to disc brakes, why buy a disc hub? Does your frame and fork have disc mounting tabs for the calipers? I would have them order a proper hub for your application.
03-25-09, 11:53 AM
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While it's nice to have a wheel that can go both ways, just having a disc rear wheel isn't all that useful on the other hand. I take it the original hub isn't all that special and the cost of a new rim vs new wheel is attractive otherwise? If you do get the disc hub and don't mount a rotor, and it's the 6-bolt type, you might want to cover the bolt holes so as to keep the threads nice and clean.
03-25-09, 11:54 AM
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The hub flanges are likely to be closer together, which would result in a weaker wheel.
Why did your rim split ?
Is this a warranty issue ?
Doesthe disc brake wheel they are offering you have a decent rim for rim brakes ?
If it's warranty I'd hold out for something more suitable.
If you are paying for the repair, get the right wheel or expect a discount as you are accepting what they want to shift.
If it is going to cost you the same, get the correct wheel.
Why did your rim split ?
Is this a warranty issue ?
Doesthe disc brake wheel they are offering you have a decent rim for rim brakes ?
If it's warranty I'd hold out for something more suitable.
If you are paying for the repair, get the right wheel or expect a discount as you are accepting what they want to shift.
If it is going to cost you the same, get the correct wheel.
03-25-09, 11:57 AM
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i wouldn't worry about the hub. just make sure the rim isn't a disc-specific rim.
03-25-09, 02:55 PM
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Agreed. Disc specific rims are not designed for rim brakes. The surface the rim brake would work on is frequently not flat and not designed to take the wear that a rim brake causes.
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Gear Hubs Owned: Rohloff disc brake, SRAM iM9 disc brake, SRAM P5 freewheel, Sachs Torpedo 3 speed freewheel, NuVinci CVT, Shimano Alfine SG S-501, Sturmey Archer S5-2 Alloy. Other: 83 Colnago Super Record, Univega Via De Oro
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Gear Hubs Owned: Rohloff disc brake, SRAM iM9 disc brake, SRAM P5 freewheel, Sachs Torpedo 3 speed freewheel, NuVinci CVT, Shimano Alfine SG S-501, Sturmey Archer S5-2 Alloy. Other: 83 Colnago Super Record, Univega Via De Oro
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03-25-09, 07:28 PM
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My RANS V-Rex came with disc hubs and V-brakes. No way to mount disc brakes. The rims aren't disc-specific. Are there very many disc-specific rims?
03-25-09, 07:48 PM
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If you have a wheel built with a disk hub and rim brake rim, you will have a wheel that is more likely to work on your next bike. I don't see any downside, just more options later on.
03-25-09, 09:38 PM
#10
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Tons. They are preferable because they require less material and are therefore lighter. I've noticed that many mid-level replacement wheels have disc hubs and rims for brakes, I just assumed it was manufacturer economics- it would work for either type of bike.
03-25-09, 10:35 PM
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The DT rims on my Civia definitely are and I suspect the Alex rims on the Swobo may be. Both are disc brake bikes from the factory. Both are fully anodized rims without a machined braking surface while most rim brake rims these days have a shiny silver, frequently machined, braking surface. Many also have a wear indicator groove in the braking surface.
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Gear Hubs Owned: Rohloff disc brake, SRAM iM9 disc brake, SRAM P5 freewheel, Sachs Torpedo 3 speed freewheel, NuVinci CVT, Shimano Alfine SG S-501, Sturmey Archer S5-2 Alloy. Other: 83 Colnago Super Record, Univega Via De Oro
Visit and join the Yahoo Geared Hub Bikes group for support and links.
https://groups.yahoo.com/group/Geared_hub_bikes/
Gear Hubs Owned: Rohloff disc brake, SRAM iM9 disc brake, SRAM P5 freewheel, Sachs Torpedo 3 speed freewheel, NuVinci CVT, Shimano Alfine SG S-501, Sturmey Archer S5-2 Alloy. Other: 83 Colnago Super Record, Univega Via De Oro
Visit and join the Yahoo Geared Hub Bikes group for support and links.
https://groups.yahoo.com/group/Geared_hub_bikes/
