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Old 06-14-10, 02:56 PM   #1
lembeh
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Jamis Aurora handlebar bag - STI shifters conundrum

A couple of weeks ago I mounted a new Topeak Handlebar DX bar on my Jamis Aurora '09. I have also had to get more than a few gear adjustments on this bike since but its not because of faulty components, I think its because the gear cables from the STI shifters are being pulled too far because of having the handlebar bag mounted. See attached picture.

I really like the utility that the handlebar bag is going to provide me, on the other hand I don't want to get adjustments on my gears every week. Do you guys have any suggestions as to what might be a workaround to fix this issue of stretched cables because of the handlebar bag?
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Old 06-14-10, 03:01 PM   #2
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i've heard a v-brake noodle works well for this. gets you a nice 90 degree bend right out of the shifter.

quick google yields this example: http://www.adamk.ca/images/cockpit_t2000.jpg

another option is to switch shifters ... either bar ends, which i love, or campy with a jtek shiftmate.

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Old 06-14-10, 04:21 PM   #3
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Get a smaller bag.
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Old 06-14-10, 06:22 PM   #4
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Second the noodle idea. A medium ortlieb bag and a 42mm bar play well together with sti with no modifications needed.
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Old 06-14-10, 06:37 PM   #5
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I second the smaller bag idea.
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Old 06-14-10, 06:50 PM   #6
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Originally Posted by lembeh View Post
Do you guys have any suggestions as to what might be a workaround to fix this issue of stretched cables because of the handlebar bag?
I can't quite envision how a handlebar bag would lead to stretched cables...

My suggestion would be to pull the cable tension barrel adjusters out of the shifters. Stick them in the downtube cable stops, where they're supposed to be, or get inline adjusters instead. Should reduce the sharpness of the bend where the cable enters the shifter. I've got a pretty large handlebar bag and have never had any problems with my STIs...
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Old 06-14-10, 06:58 PM   #7
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My suggestion would be to pull the cable tension barrel adjusters out of the shifters. Stick them in the downtube cable stops, where they're supposed to be
i've seen an aurora set up like this before--the barrel adjusters in the sti's. i wonder if they don't fit in the downtube cable stops. weird.
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Old 06-15-10, 08:16 AM   #8
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i've seen an aurora set up like this before--the barrel adjusters in the sti's. i wonder if they don't fit in the downtube cable stops. weird.
I own barrel adjusters similar to the OPs; they may well be too wide to fit in the cable stops. But there are smaller adjusters available. If nothing else, inline adjusters would allow you to run the cables directly into the STIs, which would then give more flexibility in positioning the cables. When I built my touring bike, I bought some brake noodles, but found they weren't necessary...
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Old 06-15-10, 09:35 AM   #9
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Originally Posted by sstorkel View Post
I can't quite envision how a handlebar bag would lead to stretched cables...
What's happening is the bag is putting pressure on the cables. My best uneducated guess is that the additional friction is causing all sorts of problems. I've also seen people just outright break the cables by using bags that large with STI's.

I'd say that using a smaller bag is the most expedient fix. You can always add a Bento Box or similar method for additional storage up-front. It'll also be easier to use the cross brakes with the smaller bag.

I may be wrong but I don't think noodles will help much. It looks to me that you're still likely to smack the cables and damage them at some point.

I like bar-end shifters, but I'm not entirely certain it's worth switching, especially if you prefer STI's.
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Old 06-15-10, 12:31 PM   #10
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I think sstorkel has the right idea: move the adjusters away from the sti's. It would be the most cost-effective way to keep your bag while eliminating the cable problem. Inline adjusters are easy to install if your present adjusters will not fit into the frame stops. I had to add an inline adjuster for my front disc brake setup because there was no other way to adjust cable tension. It works fine and keeps its adjustment very well.
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Old 06-15-10, 10:00 PM   #11
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Thanks for all your feedback. I took my bike to my LBS and swapped my Topeak Handlebar DX bag for an Ortleib Medium Handlebar bag. Hopefully this will do the trick.
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Old 06-19-10, 04:16 PM   #12
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I know it's kinda late, but.... The v-brake noodle thing works great.

I use this setup with my Arkel handlebar bag (large). Just cut off the end that locks into the v-brake, so it's just a plain curved tube. I fed the noodle into my brifter and attached an inline barrel-adjuster right after, then the cable.
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Old 06-21-10, 06:42 AM   #13
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I am on my third day of my tour and my gears are off again! I got the smaller handlebar bag (Ortlieb Medium) and then got an adjustment but then the gears keep slipping again. I rode thru Northeastern PA and NJ yesterday and had to dismount several times thanks to the gear not changing (or changing randomly) on steep grades! I found a bike store about 3 miles from my hotel. Ill take it to him today, hopefully he can fix this issue as I need to do some serious climbing all thru PA. Ill ask him to put noodles, if that doesnt work then I guess the handlebar bag has to go which would be a huge inconvenience!

Ill keep you guys posted on how this turns out.
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Old 06-21-10, 08:33 AM   #14
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Ill ask him to put noodles, if that doesnt work then I guess the handlebar bag has to go which would be a huge inconvenience!
Have you thought about moving the barrel adjusters to a different location? Noodles aren't necessary in my experience...
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