Stumpjumper modification ?
09-06-05, 09:02 PM
#1
Senior Member
Thread Starter
Join Date: Apr 2005
Location: Des Moines, IA
Posts: 186
Bikes: 04' Specialized Roubaix, 05' Specialized Stumpjumper, 96' GT Saddleback (eventual single-speed)
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Stumpjumper modification ?
I picked up a new Stumpy a few months back and have noticed after a few good falls that the shifter assy's do not clear the top tube if the front wheel is rotated around in the fall. Because of this I have 2-3 gouges on my top tube down to bare metal form just this type of crash.
What i'm wondering is if changing to a riser handlebar or taller stem would be a good option? What effects would that have on handling if any due to the change in geometry? Have any other of you Stumpy owners ran across this?
Thanks for any tips!
What i'm wondering is if changing to a riser handlebar or taller stem would be a good option? What effects would that have on handling if any due to the change in geometry? Have any other of you Stumpy owners ran across this?
Thanks for any tips!
09-06-05, 09:18 PM
#2
The Rabbi
Join Date: Apr 2004
Posts: 5,123
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 16 Post(s)
Likes: 0
Liked 3 Times
in
3 Posts
Mine cleared, but two things come to mind:
A) shifters and brakes should be setup so they rotate on an impact, but tight enough they don't move under normal use, saves the parts and your bike
B) a riser is a good option, I bet 3/4" would do it. The only drawback of a riser is the additional width... for geared XC racing I personally prefer a narrower flat bar with short bar ends vs. a wide riser, but both seem to give you about the same leverage.
A) shifters and brakes should be setup so they rotate on an impact, but tight enough they don't move under normal use, saves the parts and your bike
B) a riser is a good option, I bet 3/4" would do it. The only drawback of a riser is the additional width... for geared XC racing I personally prefer a narrower flat bar with short bar ends vs. a wide riser, but both seem to give you about the same leverage.
09-06-05, 09:26 PM
#3
Senior Member
Thread Starter
Join Date: Apr 2005
Location: Des Moines, IA
Posts: 186
Bikes: 04' Specialized Roubaix, 05' Specialized Stumpjumper, 96' GT Saddleback (eventual single-speed)
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Why would risers add width?
09-06-05, 09:28 PM
#4
The Rabbi
Join Date: Apr 2004
Posts: 5,123
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 16 Post(s)
Likes: 0
Liked 3 Times
in
3 Posts
Because of the bend, depending on the bar you can't move all the controls in as far. I know my Stumpjumper had a 22 or 23" factory bar, and my smallest riser is 26" uncut.
09-07-05, 08:06 AM
#5
Senior Member
Thread Starter
Join Date: Apr 2005
Location: Des Moines, IA
Posts: 186
Bikes: 04' Specialized Roubaix, 05' Specialized Stumpjumper, 96' GT Saddleback (eventual single-speed)
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
My Stumpy is an 05' and my bars are currently 23.5" wide (LBS cut off appx .5" off each end). I definitely like my bars as narrow as possible for tight singletrack.
09-07-05, 02:28 PM
#6
Senior Member
Thread Starter
Join Date: Apr 2005
Location: Des Moines, IA
Posts: 186
Bikes: 04' Specialized Roubaix, 05' Specialized Stumpjumper, 96' GT Saddleback (eventual single-speed)
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Could a different stem be used to effectively raise the bars, while still running the same flat bar?
During a 24 hour race I just competed in, I think I would have been more comfortable overall being a bit more upright, and I don't think that would have hampered my performance?
During a 24 hour race I just competed in, I think I would have been more comfortable overall being a bit more upright, and I don't think that would have hampered my performance?
