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Author Topic: Handle Bar question.  (Read 687 times)

chinoy

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Handle Bar question.
« on: December 25, 2009, 06:47:39 PM »
If you see this picture.


Now you look at the two nuts that mount the handle bar to the head stock.
The distance between both bolts seem very less.
Ive measured various bikes the widest being bikes that mount the handle bar to the for tube.
To bikes like the RD/RZ where the use two clamps.

What worries me is the distance between both clamps is more on allmost every bike Ive seen.

How does this effect handling.
It shouldnt be too hard to make up a fresh steel pice which still uses the stock bolts to mount but is wider.

What are your thoughts on this issue and how it effects handling.

Reason I ask is to eliminate a slight weave that develops at speed.

ace.cafe

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Re: Handle Bar question.
« Reply #1 on: December 25, 2009, 06:54:48 PM »
The mounting width of the handlebar clamps will not affect handling,
It only may affect the strength of the handlebar mounting arrangement.
Wider clamps may give a stronger arrangement, but will not affect the geometry.
What affects geometry is the overall width of the handlebar hand-grips, as that affects the leverage with which you turn the bars.
The points where the mounts are does not affect the leverage, since the casquette effectively becomes part of the handlebar system as soon as it's tightened down.
The key dimension is the distance from the center of the bearing, to the location of the hand-grips.

Most steering instability issues are related to wheel balance, fork set-up, or steering head bearing adjustments.
« Last Edit: December 25, 2009, 06:59:31 PM by ace.cafe »
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jayprashanth

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Re: Handle Bar question.
« Reply #2 on: December 26, 2009, 09:31:21 AM »
OT but the STD350 in the pic looks terrific.

Cheers,

Jay

UncleErnie

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Re: Handle Bar question.
« Reply #3 on: December 26, 2009, 02:23:17 PM »
Nice bike!

Having pushed my bike over, I can say the mounts are fine (but the handlebars will bend if hit hard enough...)

Get the front wheel off the ground to check your steering bearings;  Your wheel should move from side to side with a little pressure without being floppy.  Also, there should be no "hits" or slight bumps as it moves.  Conversely, you should not have to "push" the wheel either way. 

Wheels bearings may be the problem, but I'm guessing the tires need to be properly inflated.
Run what ya brung

chinoy

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Re: Handle Bar question.
« Reply #4 on: December 28, 2009, 08:16:46 AM »
Thanks guys.

Do you know the bearing sizes on the C5.
The first thing I do on every bike I own is put in some tapered roller bearings in.
If you have a size I can order them from my regular supplier.