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Search: Posts Made By: Cyclefiend
Showing results 1 to 13 of 13
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Forum: Bicycle Mechanics
12-24-20, 02:43 PM
Replies: 45
Views: 7,528
Posted By Andrew R Stewart

This issue has been known, written about and not...

This issue has been known, written about and not well understood for decades and decades. There's all kinds of opinion to be found with well done internet searches. There's VERY LITTLE actual...
Forum: Bicycle Mechanics
12-24-20, 11:09 AM
Replies: 45
Views: 7,528
Posted By davidad

Shimmy or Speed Wobble by Jobst Brandt...

Shimmy or Speed Wobble by Jobst Brandt (sheldonbrown.com) (https://www.sheldonbrown.com/brandt/shimmy.html)
Forum: Bicycle Mechanics
12-23-20, 11:26 AM
Replies: 45
Views: 7,528
Posted By shelbyfv

If your wobble is repeatable you are well on your...

If your wobble is repeatable you are well on your way to a resolution. Find a descent and do repeats while changing things. Start with your position, both saddle and bars. Change one thing at a...
Forum: Bicycle Mechanics
12-23-20, 09:41 AM
Replies: 45
Views: 7,528
Posted By Crankycrank

A few other things to consider. Check the balance...

A few other things to consider. Check the balance of the wheels by spinning them and checking for overly heavy spots where the wheel always will stop in the same spot. Almost all wheels will be a...
Forum: Bicycle Mechanics
12-23-20, 08:16 AM
Replies: 45
Views: 7,528
Posted By pdlamb

The only two bike mechanic-al things I can think...

The only two bike mechanic-al things I can think of are misaligned wheels and a wheel out of true. So first, make sure your rear wheel is straight in the frame. Then give the front a spin and watch...
Forum: Bicycle Mechanics
12-22-20, 02:17 PM
Replies: 45
Views: 7,528
Posted By aggiegrads

I had a bad speed wobble on one of my bikes. I...

I had a bad speed wobble on one of my bikes. I don’t think that I did anything wrong on that bike that I don’t do on any of my other 5 drop bar bikes. Anytime I sat up to rest my hands or get a...
Forum: Bicycle Mechanics
12-22-20, 02:00 PM
Replies: 45
Views: 7,528
Posted By base2

Plus one to rider position & cg placement. ...

Plus one to rider position & cg placement.

Bike shops as a matter of industry practice place the rider too far back & too vertical with low seat placement & high bar height. The result is very far...
Forum: Bicycle Mechanics
12-22-20, 01:41 PM
Replies: 45
Views: 7,528
Posted By HillRider

I know you said you wanted mechanical, not riding...

I know you said you wanted mechanical, not riding position or technique suggestions but I'm going to ignore that. Cxwrench mentioned a "death grip" and that can be a real contributor. At high...
Forum: Bicycle Mechanics
12-22-20, 01:26 PM
Replies: 45
Views: 7,528
Posted By cxwrench

The most common cause for motorcycles won't have...

The most common cause for motorcycles won't have anything to do w/ what happens on a bicycle...front wheel getting really light or coming off the ground then coming down crooked.
Forum: Bicycle Mechanics
12-22-20, 12:07 PM
Replies: 45
Views: 7,528
Posted By Racing Dan

Speed wobble is well known in motorcycles. All...

Speed wobble is well known in motorcycles. All sorts of dampeners are available and they do work. To my knowledge only very little is available for bicycles and sadly doesn't fit most bikes, - but...
Forum: Bicycle Mechanics
12-22-20, 11:54 AM
Replies: 45
Views: 7,528
Posted By cxwrench

I've had people come in with similar problems for...

I've had people come in with similar problems for years. It's nearly never the bike. It's nearly always positional, or the ride had a death grip, or something along those lines. I've never had it...
Forum: Bicycle Mechanics
12-22-20, 11:16 AM
Replies: 45
Views: 7,528
Posted By Iride01

Have you tried changing where your weight is on...

Have you tried changing where your weight is on the bike when you get near or into situations that cause the issue for you? Are you certain it isn't from something else, like maybe your front wheel...
Forum: Bicycle Mechanics
12-22-20, 11:05 AM
Replies: 45
Views: 7,528
Posted By Sy Reene

Sorry, nothing specific to recommend. A decent...

Sorry, nothing specific to recommend. A decent article that has some ideas linked below, including different tires and/or having wheels checked for round.
Stock tires on a Madone are 25s, have you...
Showing results 1 to 13 of 13


 
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