In reverse order:
NO.
Do Not Ride Without The Rear Brake Cover.
It is not an optional piece of equipment. It is an integral part of the brake system, as it contains a co-molded brake booster which connects the brake posts once bolted on, and a secondary safety feature which helps keep the brake wedge between the arms where it belongs.
SRAM rear derailleurs don't "get out of the way" on rear wheel installation like Shimano RDs do, so I agree it takes a little more action on the user's part...but it's only a little. You're in small-small so that's the right first step. Then basically you have to help the cage get around the small cog. Like so (skip to 1:20 or so):
No, that's not an SC, but it's a SRAM RD and it effectively demonstrates what I'm trying to get across. This works on SCs with the Speedfin installed.
This guy does it with Shimano (in a stand, yes, but what matters is the idea of actively manipulating the RD...skip to about 1:57):
1. Does anyone have any issue with the seatpost creeping down after a few 30-50mile rides? Its only a few mm but definitely noticible. I'm using a bontrager torque wrench to tighten to 5nm. The bolt does say 5.2nm and wondering if that's the reason...the 0.2 nm.
ridenfish39's carbon assembly paste comment is on point...at least as a first step. If it keeps happening then it should be brought to a Trek dealer for inspection and possible further action.
Hope these help!
ETA: added time markers for the vids and fixed my horrible quote formatting...sorry about that
Carl Matson
Johnnyfever wrote:
2. Let's talk about the rear speedfin. What exactly are the complications of not using it? I think Carl mentioned that there needs to be compression on the screws at the brakes or something.... But what happens if we don't use the fin? I know several here have been riding without it.NO.
Do Not Ride Without The Rear Brake Cover.
It is not an optional piece of equipment. It is an integral part of the brake system, as it contains a co-molded brake booster which connects the brake posts once bolted on, and a secondary safety feature which helps keep the brake wedge between the arms where it belongs.
Johnnyfever wrote:
Why bother you may ask? Well, my 25mm tires get easily perched/stuck on it when trying to reinstall the tire. Even in small front /small rear cog it is not easy with my etap. Trying to hold the frame,jimmy with the derailleur while holding the wheel is tricky.SRAM rear derailleurs don't "get out of the way" on rear wheel installation like Shimano RDs do, so I agree it takes a little more action on the user's part...but it's only a little. You're in small-small so that's the right first step. Then basically you have to help the cage get around the small cog. Like so (skip to 1:20 or so):
No, that's not an SC, but it's a SRAM RD and it effectively demonstrates what I'm trying to get across. This works on SCs with the Speedfin installed.
This guy does it with Shimano (in a stand, yes, but what matters is the idea of actively manipulating the RD...skip to about 1:57):
Johnnyfever wrote:
Two questions for GEN 2 SC: 1. Does anyone have any issue with the seatpost creeping down after a few 30-50mile rides? Its only a few mm but definitely noticible. I'm using a bontrager torque wrench to tighten to 5nm. The bolt does say 5.2nm and wondering if that's the reason...the 0.2 nm.
ridenfish39's carbon assembly paste comment is on point...at least as a first step. If it keeps happening then it should be brought to a Trek dealer for inspection and possible further action.
Hope these help!
ETA: added time markers for the vids and fixed my horrible quote formatting...sorry about that
Carl Matson