Warped rotor, Lumsden grind?????

cpk1
cpk1 Posts: 175
edited January 2011 in MTB workshop & tech
Has anyone tried lumsden grinding a rotor so it will run true again and would it be safe at taking roughly 1 mm of the total thickness.
Trail bike: Kona Coiler 06, Rockshox domain 318is, juicy 7s, sun rims s-type.
Commute bike: Dawes Watoga.

Comments

  • nicklouse
    nicklouse Posts: 50,675
    why? just straighten it.

    taking 1mm of a disc that is not much more than that is not a good idea.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • 02gf74
    02gf74 Posts: 1,171
    ^^^ what he said - I trued up a shimano xt rotor - thumbs on the "spoke" part, fingers o nthe braking surface, some gently pushing and job done.

    replacement rotos can eb gotten for 20 quid - can't see it is worth grdingin one down and losing 1 mm of an alrady thin rotor would reduce its efficiencu, cna't see it is worth the hassle TBH.
  • cpk1
    cpk1 Posts: 175
    probly best just to buy another the rotor seems to be dished and bent all over the place.
    Trail bike: Kona Coiler 06, Rockshox domain 318is, juicy 7s, sun rims s-type.
    Commute bike: Dawes Watoga.

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