Hey all,
I'm just pulling my old '05 Transition Preston out of storage and going through it. I came upon an old problem.
In the middle few gears of the cassette, I'm getting a nasty slip-and-grab when I crank hard or simply stand hard on one pedal. I actually shinned myself goofing around a few years ago and had to get stitches from it. The slip-grab is a nasty deep pop-crunch sound from out back. A lot like I am between gears, but deeper.
First thing, I figure it was the chain jumping gears. I tested and tuned the derailleur repeatedly, and it's tuned well. I thought maybe my shifter cable was getting hung up on the frame or suspension pieces when I crank hard - its not. I checked the pivots for the rear suspension - all are tight. I checked the rear hanger - it was a little tweaked, but after a vice-job, it's straight again. I've spun and inspected the cassette a hundred times looking for bent teeth or bent rings, but nothing.
I'm wondering now - would a bad freewheel cause nasty slip/grab too?
Can anyone offer any advice on how to troubleshoot this further?
The freewheel spins and buzzes like it always has. The bike has pretty low hours on it, and I ride like a powder puff. More XC than anything.
I'm a bit perplexed that it only happens in the middle few gears. Perhaps those gears are delivering more torque to the freewheel vs the higher gears... and it's not slipping in the lower gears because I quickly pass through the meat of the pedal stroke. Not sure - just grasping here.
I'm running a combo of SRAM X5 and X7 hardware. I forget the cassette honestly, but it's SRAM too. I'm running Funn wheelsets. It was all ordered as a package deal.
Thanks!
I'm just pulling my old '05 Transition Preston out of storage and going through it. I came upon an old problem.
In the middle few gears of the cassette, I'm getting a nasty slip-and-grab when I crank hard or simply stand hard on one pedal. I actually shinned myself goofing around a few years ago and had to get stitches from it. The slip-grab is a nasty deep pop-crunch sound from out back. A lot like I am between gears, but deeper.
First thing, I figure it was the chain jumping gears. I tested and tuned the derailleur repeatedly, and it's tuned well. I thought maybe my shifter cable was getting hung up on the frame or suspension pieces when I crank hard - its not. I checked the pivots for the rear suspension - all are tight. I checked the rear hanger - it was a little tweaked, but after a vice-job, it's straight again. I've spun and inspected the cassette a hundred times looking for bent teeth or bent rings, but nothing.
I'm wondering now - would a bad freewheel cause nasty slip/grab too?
Can anyone offer any advice on how to troubleshoot this further?
The freewheel spins and buzzes like it always has. The bike has pretty low hours on it, and I ride like a powder puff. More XC than anything.
I'm a bit perplexed that it only happens in the middle few gears. Perhaps those gears are delivering more torque to the freewheel vs the higher gears... and it's not slipping in the lower gears because I quickly pass through the meat of the pedal stroke. Not sure - just grasping here.
I'm running a combo of SRAM X5 and X7 hardware. I forget the cassette honestly, but it's SRAM too. I'm running Funn wheelsets. It was all ordered as a package deal.
Thanks!