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thuren mikelevy's article
Feb 17, 2018 at 11:41
Feb 17, 2018
Good Ideas Executed Poorly - Opinion
@madblack: He does explain it well, and I agree with everything he says. This is why I feel the rotors need conical/counter sunk bolts retaining them, to make sure they all take some of the shear force. At least put a shoulder on the bolts or something!
thuren mikelevy's article
Feb 17, 2018 at 11:39
Feb 17, 2018
Good Ideas Executed Poorly - Opinion
@scotthy72: Yes automotive rotors DO have a tapered surface! Not always, but quite often the brake rotor is not just loose on the studs, but rather there are a few counter sunk head bolts that both the rotor to the hub.
thuren mikelevy's article
Feb 16, 2018 at 7:02
Feb 16, 2018
Good Ideas Executed Poorly - Opinion
@Obidog: The hundreds of bicycle brake rotor bolts I have seen, all have the blue dab of thread lock. Though thread "LOCK" is a funny name, as unless you are using the RED(high heat required to remove), that blue stuff is only there to keep the bolts from falling out if they do come loose. The blue Loctite does not "LOCK" anything.
thuren mikelevy's article
Feb 16, 2018 at 6:56
Feb 16, 2018
Good Ideas Executed Poorly - Opinion
@robhill: The car wheel was a bad analogy here in a way, as a car wheel see's forces from MANY directions, unlike the brake rotor itself. To that though, yes the 5 bolts hold the car wheel on when ripping around a corner with high lateral forces.
thuren mikelevy's article
Feb 16, 2018 at 6:52
Feb 16, 2018
Good Ideas Executed Poorly - Opinion
@robhill: Agree'd the bolts are only in tension....... When they are tight.
thuren mikelevy's article
Feb 16, 2018 at 6:52
Feb 16, 2018
Good Ideas Executed Poorly - Opinion
@mm732: Exactly! That is why the best Moto sprocket and brake rotor designs use bolts with counter sunk heads. The goal is to keep the sprocket or rotor from shifting, and make sure it's center. Once it slips back and forth a few times, it's all over!
thuren mikelevy's article
Feb 15, 2018 at 20:12
Feb 15, 2018
Good Ideas Executed Poorly - Opinion
@fullfacemike: Not being a jerk at all no worries! Good info you are posting! My torque wrench is the small one. Inch/lb toque only. I'm an engineer and more. I have a lot of background in this stuff. The internet is funny you could be talking to a 12 year old kid, or Einstein, you never know. Having a brake rotor design that does not use a press fit shoulder bolt(s), or conical seat, is just sloppy engineering. We are dealing with left over technology from 1995, when tiny disk brakes controlling 26" wheels had little power, and back then that technology was cutting edge. These days, what we have for 6 bolt rotors is sloppy, literally.
thuren mikelevy's article
Feb 15, 2018 at 20:03
Feb 15, 2018
Good Ideas Executed Poorly - Opinion
@bogey: Good point about automotive rotors! That said, they have full surface friction on both sides, and a lot of bolt torque, to help hold in place.
thuren mikelevy's article
Feb 15, 2018 at 18:17
Feb 15, 2018
Good Ideas Executed Poorly - Opinion
@jlrotax583: Car lug nuts have a tapered/conical seat to keep things centered.
thuren mikelevy's article
Feb 15, 2018 at 17:32
Feb 15, 2018
Good Ideas Executed Poorly - Opinion
@eimechanics: And, don't try any fun driveway stunts or trials moves, where you might shift your rotor forces the opposite direction!
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