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Old 05-21-07, 12:02 PM   #1
badger_biker 
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Loaded question

I haven't had my '84 Specialized Expedition fully loaded for a number of years and don't remember having this problem. I did a test ride with front and rear panniers and about a 45 lb total load and when I hit a cross wind or jiggled the bars around a bit, the front give a shimmy feel. I'm using Blackburn low riders and small to mid size panniers in the front with the heavy items on the bottom. The bike is adjusted fine and wheels are true and 38c tires in good shape. It seems to happen no matter what the speed.

Any recommendations/suggestions? I did a trip in the past with my Bridgesone 400 with a regular front rack (higher mount) and large heavy panniers on it and never encountered a problem. Should I be going heavier in the front?
Thanks
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Old 05-21-07, 12:09 PM   #2
Tom Stormcrowe
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Originally Posted by badger_biker
I haven't had my '84 Specialized Expedition fully loaded for a number of years and don't remember having this problem. I did a test ride with front and rear panniers and about a 45 lb total load and when I hit a cross wind or jiggled the bars around a bit, the front give a shimmy feel. I'm using Blackburn low riders and small to mid size panniers in the front with the heavy items on the bottom. The bike is adjusted fine and wheels are true and 38c tires in good shape. It seems to happen no matter what the speed.

Any recommendations/suggestions? I did a trip in the past with my Bridgesone 400 with a regular front rack (higher mount) and large heavy panniers on it and never encountered a problem. Should I be going heavier in the front?
Thanks
I generally do a 60/40 split on weight, front and rear if I'm using panniers. Sounds like you might be a tad light up front.
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Old 05-22-07, 11:23 AM   #3
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Originally Posted by Tom Stormcrowe
I generally do a 60/40 split on weight, front and rear if I'm using panniers. Sounds like you might be a tad light up front.
Thanks for the tip Tom. I dropped everything off the rear, took a test ride and had no problem. I guess I'll try swapping the bags fore and aft or see what heavy stuff I can fit in the smaller ones up front.
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Old 06-27-07, 02:28 PM   #4
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Handle bar bag the culprit

As a follow up on my recent tour I had major shimmy problems with F/R panniers and handle bar bag. I did all I could to adjust the load weight fore and aft in the panniers and did not have any success until I popped off the handle bar bag - end of problem.

This seemed odd to me since I have the compact Topeak hdb bag with the waist pack option. It has some weight but not excessive, and it never seemes to affect the bike unless I have front panniers also??

I'm curious if anyone else has had issues with handle bar bags causing such shimmy problems.

I like the quick release bag that I can keep wallet, phone, camera in to be handy and slap around my waist when I leave the bike for a short time. I have Blackburn low riders and no front platform so not much of an option for keeping stuff handy. The shimmy really sucked though so I may need to do something different.
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