barp
- Member since Nov 4, 2019
- Male
-
Portland , Oregon - 3 Followers
- 18 Trailforks Points
mostly in one place
Recent
barp dariodigiulio's article
Apr 9, 2024 at 11:42
12 hours
First Ride: Fox Releases New Grip X & Grip X2 Dampers
worst
barp dariodigiulio's article
Apr 9, 2024 at 11:38
12 hours
First Ride: Fox Releases New Grip X & Grip X2 Dampers
Haha as if he even knows how to ride a bike.
barp scottsecco's article
Apr 8, 2024 at 11:51
2 days
Movies For Your Monday - Erik Fedko, Vinny Armstrong, Talus Turk, Robbie Maddison, & More
@joebiden: I think they were being sarcastic.
barp mattbeer's article
Apr 8, 2024 at 11:49
2 days
Pinkbike Poll: Center Lock or 6-Bolt Brake Rotor Mounting?
That's what she said!
barp mattbeer's article
Apr 7, 2024 at 14:47
2 days
Pinkbike Poll: Center Lock or 6-Bolt Brake Rotor Mounting?
@Bunabe: A hex wrench for rotor bolts? What year is this, 2004?
barp mattbeer's article
Apr 7, 2024 at 13:05
2 days
Pinkbike Poll: Center Lock or 6-Bolt Brake Rotor Mounting?
If they do a poll on "have your rotors come loose?", then I demand that they include follow-up questions:
2. Did you install them with a torque wrench?
3. If so, how long since it was calibrated?
I've never had a rotor that I installed (hundreds at least, since it's my job) come loose. I use a beam torque wrench, which is calibrated every time I use it (you just look at the gauge and make sure it's at zero under no load).
I guess even with correct torque, CL does stand a chance of loosening if the tolerances between the hub and rotor are poor, AND the rider does a lot of fakie (backwards) braking. Quality parts will prevent this issue--the amount of play between a good CL rotor and a good hub is negligible.
barp mattbeer's article
Apr 7, 2024 at 12:57
2 days
Pinkbike Poll: Center Lock or 6-Bolt Brake Rotor Mounting?
@jason069: To build on your point, even a traditional chainring isn't shearing directly on a 5 mm bolt; it's shearing on a chainring nut (10 mm, if I recall correctly) which then contains a bolt (8 mm?).
@L0rdTom: The extent to which the braking force is transferred to the face of the hub's rotor flange, is determined by how much static friction the rotor can apply to the hub because of bolt tension. I'm sure it's not nothing, but I doubt that it's 100% of the torque either. I guess for science somebody should enlarge the holes in a 6-bolt rotor, install it with the holes centered over the hub holes, properly torque the bolts, then do some hard braking and see if it moves!
barp mattbeer's article
Apr 7, 2024 at 12:51
2 days
Pinkbike Poll: Center Lock or 6-Bolt Brake Rotor Mounting?
@Bunabe: If your Centerlock lockring uses the same tool you use for your bottom bracket, and nothing on your bike uses a Torx T25 tool (not an uncommon scenario), then your "additional tool" calculus is backwards. I have very few bike parts (aside from brake rotors) that use T25, and several Hollowtech II BB's that use the same tool as a CL lockring.
barp mattbeer's article
Apr 6, 2024 at 18:02
Apr 6, 2024
Pinkbike Poll: Center Lock or 6-Bolt Brake Rotor Mounting?
Yeah, that's why the latest, greatest Maven brake uses DOT fluid just like a motor vehicle. Oh, wait...
