any straigh rotors out there?
05-15-06, 10:16 PM
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any straigh rotors out there?
from the posts it seems rare to get a nice straigt disc brake rotors. I hav had little lcuk gettong my avid bb7's straight they spring back to what they were.
to get really accurateflat discs it would take some hand work to tension and straighten them before they are ground. so I doubt it is done. but are there really good straight 6" rotors out there?
to get really accurateflat discs it would take some hand work to tension and straighten them before they are ground. so I doubt it is done. but are there really good straight 6" rotors out there?
05-16-06, 05:45 AM
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Use a long-jaw adjustible wrench to straighten them. There are some special tools for the job out there, but they cost big $'s and I have a good set of adjustable wrenches. That said, the wrenches are a compromise and the special tools would work better/quicker and I may get them yet.
You can do it in-place using the pads as a reference guide. I bend them at the radial-arm locations as you want to do the bending as close to the axle as possible.
My rear disc was so bad recently that I couldn't adjust them to get good one-finger braking with the levers set for good modulation control. Now they dial-in perfectly.
Al
You can do it in-place using the pads as a reference guide. I bend them at the radial-arm locations as you want to do the bending as close to the axle as possible.
My rear disc was so bad recently that I couldn't adjust them to get good one-finger braking with the levers set for good modulation control. Now they dial-in perfectly.
Al
Last edited by Al.canoe; 05-16-06 at 05:50 AM.
05-16-06, 10:43 AM
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Originally Posted by Evilbee
Surely they're all straight when you buy them (or near enough)?
05-16-06, 10:45 AM
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Originally Posted by Al.canoe
Use a long-jaw adjustible wrench to straighten them. There are some special tools for the job out there, but they cost big $'s and I have a good set of adjustable wrenches. That said, the wrenches are a compromise and the special tools would work better/quicker and I may get them yet.
You can do it in-place using the pads as a reference guide. I bend them at the radial-arm locations as you want to do the bending as close to the axle as possible.
My rear disc was so bad recently that I couldn't adjust them to get good one-finger braking with the levers set for good modulation control. Now they dial-in perfectly.
Al
You can do it in-place using the pads as a reference guide. I bend them at the radial-arm locations as you want to do the bending as close to the axle as possible.
My rear disc was so bad recently that I couldn't adjust them to get good one-finger braking with the levers set for good modulation control. Now they dial-in perfectly.
Al
05-16-06, 12:18 PM
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Originally Posted by steveknight
thats what I did. I could bend them more then I expected to have to and they would just spring back to the original shape. this is on my recumbent so it is harder to get too them too.
Al
05-16-06, 03:45 PM
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The latest Avid rotors are heavier duty (And "heavier"), and should stay true longer. Previous, and all other brands of rotors can be kept true, but it's an on-going service requirement. Both Morningstar & Park sell rotor truing gauges that attach to truing stands and the accompanying hand tools (I've had Morningstar's set-up for a couple years and just bought all Park's stuff). If you ride hard and a lot, one of the mentioned tools is a "must have" investment. Either company's rotor specific hand tools are shallower and narrower than adjustable wrenches and better angled to access the rotors.
