Okay, so. My bike’s rear wheel, no matter how hard I tighten the skewer will automatically jump to the left seat stay whenever I pick up speed, or put some force into the cranks. The wheel is true, and everything, but I’m stumped. What is it doing?
Any chance the skewers are Ti?
Horizontal dropouts missing a limit screw on the drive side?
nope, it’s not ti. It happens with every skewer I put in there, leading me to believe it’s the wheel.
or the limit screws are not adjusted right?
don’t got no set screws.
This happened to me once. It turned out I had a 130mm rear wheel in a 135mm dropout (or something, I don’t remember the exact numbers but it was a road-sized hub in a MTB-sized dropout). A stiff rear triangle will actually make this problem worse.
The outside surface of the hub that goes against the frame dropouts needs to be knurled. Most hubs come this way, but whatever you have apparently did not. You can do it with a file, just make some nice rough lines around the outside face.
Chris
Ditch the Bontragers and get some real wheels!
What is your dimension between droputs, 130mm?? And what speed block are you using?
How does your drive side dropout look? Is it a replaceable hanger?? If it is replaceable get a new one ASAP and then try. If it isn’t replaceable, what material is your frame?
Is this a new problem, frame, or wheel? Does it happen with all of your wheels? Or just the Bontrager?
knurled?
what?
By the way, the hub is a PowerTap Standard. It’s actually not my bike, but all the same…
“knurled” = Rough up the surface as opposed to the suspect.
what frame is it?
What kind of bike? What type of dropout? Whatever it is, your skewer should not be taking the crank torque.
Okay, I’m not sure I really phrased this right. The bike/wheel takes the torque, not the skewer. It’s a FUJI, with vertical dropouts.
Try other wheels, with different skewers, same skewer if it still happens it isn’t the skewer or the wheel, it’s the drive side dropout and more specifically the drive side hanger. If it is a replaceable hanger, get a new one and then test all your wheel and skewer combinations.
Seatstay? Or chainstay? Seems like it would hit the brake before it hits the seatstay.
Assuming you mean chainstay, does it just thunk over there and rub to a halt, forcing
you to take the wheel out and reposition it, or are you just saying it rubs on the left
chainstay under power? How much play is there in the wheel bearings? Is your frame
broken?
The little piece of the hub that the skewer travels through, and the frame rests upon is too long, and needs to be filed down slightly. Had this on a campy wheel…this is the correct answer…WHAT DO I WIN?
The “axle” is the “little piece” of which you are referring.