Author Topic: Ever so slight wobble at 45 mph  (Read 9601 times)

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Offline Mcfly

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Ever so slight wobble at 45 mph
« on: November 09, 2012, 10:26:07 pm »
New Avon on the front, and I'm back to two wheel commuting.  :)

New tire is meeting expectations, the whurr.. whurr... is gone and the
ride is much smoother.

I'm not too sure if it's a problem, but when doing 45 mph, and I move
my hands off the handlebar, it wobbles ever so slightly.  It doesn't get
progressively worse, and does not affect the motorcycle, as it stays straight
and rides smooth. 

Doesn't do it at 40..... doesn't do it a 50.....  Should I loosen the pinch bolts
and give it a bounce to re-set the axle?  Or should I NOT do 45?  :-[
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Offline Slybones

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Re: Ever so slight wobble at 45 mph
« Reply #1 on: November 09, 2012, 11:19:47 pm »
Or not take you hands off the handlebars  :-[   :)
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Offline Mcfly

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Re: Ever so slight wobble at 45 mph
« Reply #2 on: November 10, 2012, 12:02:28 am »
Or not take you hands off the handlebars  :-[   :)

But then I can't stand up on the seat!!  :-\
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Offline wild man

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Re: Ever so slight wobble at 45 mph
« Reply #3 on: November 10, 2012, 12:53:10 am »
Maybe try tightening the steering head bearing about an 1/8 of a turn and see what happens
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Offline Daytona_Mike

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Re: Ever so slight wobble at 45 mph
« Reply #4 on: November 10, 2012, 01:48:58 am »
 Remove the upper triple plate and lock washer. When was the last time it got lubed?  Just turning the stem nut will not tighten up the bearings. You HAVE to loosen upper (or lower) triple tree clamps. Then tighten until it starts to bind  the steering just a little to where it does not bounce of the stops.
« Last Edit: November 11, 2012, 02:53:04 am by Daytona_Mike »
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Offline Mcfly

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Re: Ever so slight wobble at 45 mph
« Reply #5 on: November 10, 2012, 02:08:03 am »
I checked the Forks for movement when I replaced the tire.  They're solid.
No movement at all.  The '06 has 21800 on the Odometer.  It's probably overdue eh?

I have no records of the PO's maintenance, he said it was dealer maintained...OMG!

It's another project weekend.... next weekend.
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Offline Mettler1

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Re: Ever so slight wobble at 45 mph
« Reply #6 on: November 10, 2012, 04:33:01 am »
   I have never had a wobble or tank slapper but then I have never had both hands of the bar at the same time. Is there a reason I should be doing this? Am I doing something wrong??  ???
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Offline Dave Scott

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Re: Ever so slight wobble at 45 mph
« Reply #7 on: November 10, 2012, 12:12:12 pm »
   I have never had a wobble or tank slapper but then I have never had both hands of the bar at the same time. Is there a reason I should be doing this? Am I doing something wrong??  ???

Well, when texting with one hand and taking a drink with the other, you gotta have both hands off the bars, right?   ;D

McFly....I had the same problem at about 25k.  Steering head tightening fixed mine.  it's quick and easy, and probably due, so might as well give it a try, right.   :beerchug:

Offline Bob_C_CT

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Re: Ever so slight wobble at 45 mph
« Reply #8 on: November 10, 2012, 08:06:57 pm »
+2 or +3 on the stem needing tightening especially if it is happening on deacceleration in the 45mph range. I think the new tire is amplifying what you already had as far as looseness. Put bike on centerstand get front tire in the air and see if when you move the handlebars if it is so loose that it bounces off the steering stops. Should move smoothly with no notchy feeling and just a little nudge for it to come to rest on the stops. Too tight and the bike will feel as if it wants to steer itself when riding.
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Offline Mcfly

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Re: Ever so slight wobble at 45 mph
« Reply #9 on: November 10, 2012, 11:52:23 pm »
I think I'll tighten the steering head bearing tomorrow.  I've got some experience with
the triple tree from my dirt bike days, so I'll just dig in, service manual in hand.

This morning, I felt the steering tug when starting off with the bars turned right.
Time to tighten it up, before it gets all squirrelly on me.  I may go balls to the wall, and re-pack the bearings too, we'll
see how it goes.  Just regular good ol' bearing grease will do?

I think the new tire is amplifying what you already had as far as looseness.

I think the old tire's broken belt helped cause the problem to be honest with ya.
It was a bouncin' and a hoppin'.  Might be the only good thing about a stock front end,
that it absorbed a LOT of that wheel bounce.   :beerchug:
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Offline Bruiser

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Re: Ever so slight wobble at 45 mph
« Reply #10 on: November 10, 2012, 11:57:04 pm »
All C10's have a wobble when decreasing speed, w/ hands off the handlebars.  Tightening the steering head bolt helps a bit, but not completely.  When I have asked, I have had 2 mechanics say "don't take your hands off the handlebars".  Great advice.
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Offline Mcfly

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Re: Ever so slight wobble at 45 mph
« Reply #11 on: November 11, 2012, 12:08:46 am »
All C10's have a wobble when decreasing speed, w/ hands off the handlebars.  Tightening the steering head bolt helps a bit, but not completely.  When I have asked, I have had 2 mechanics say "don't take your hands off the handlebars".  Great advice.

Long ago, I had to take the company car to the shop, because the VP said, "It starts to shimmy at 75 mph".
I relayed this to the mechanic, and he told me to take it back and, "Tell the VP the speed limit is 55." 
Sounds like we know the same mechanics!
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Offline Bruiser

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Re: Ever so slight wobble at 45 mph
« Reply #12 on: November 11, 2012, 12:15:07 am »
That is pretty funny! :))
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Offline turbojoe78_MA

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Re: Ever so slight wobble at 45 mph
« Reply #13 on: November 11, 2012, 09:55:21 pm »
All C10's have a wobble when decreasing speed, w/ hands off the handlebars.  Tightening the steering head bolt helps a bit, but not completely.  When I have asked, I have had 2 mechanics say "don't take your hands off the handlebars".  Great advice.

I disagree, I had the deceleration wobble when I got my bike with a Dunlop tire on it, after I tightened the steering head bearings the wobble went away.

I now have just over 14K miles on a Pilot GT front and haven't had the wobble come back at all.
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Offline Bob_C_CT

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Re: Ever so slight wobble at 45 mph
« Reply #14 on: November 12, 2012, 02:32:21 pm »
I too had the dreaded deacceleration wobble in the 45mph range. Even with both hands on the grips it was very noticeable. Take one hand off and it was scary, never took both hands off but I think it would lead to a tank slapper. I had to go at least a half a turn to get the front end compliant. With the front tire off the ground it would bounce easily left or right off of the steering stops with just the gravity. All is better now though with the ZRX front end.
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Offline Mcfly

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Re: Ever so slight wobble at 45 mph
« Reply #15 on: November 12, 2012, 02:39:59 pm »
Project put on hold.... Do not have the required tool to do this....
Why isn't all specialty tools included with the bike?  Geez.
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Offline Mettler1

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Re: Ever so slight wobble at 45 mph
« Reply #16 on: November 12, 2012, 08:30:36 pm »
Project put on hold.... Do not have the required tool to do this....
Why isn't all specialty tools included with the bike?  Geez.
   I agree. A couple of torque wrenches would have been nice. ;)
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Offline Mcfly

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Re: Ever so slight wobble at 45 mph
« Reply #17 on: November 12, 2012, 08:47:34 pm »
I've got 4 torque wrenches... I gotta get a "steering stem nut wrench".

Prolly a $500 tool made from $3.00 worth of metal...  what a pisser.

Really not too comfortable hackin' away with a hammer and screwdriver....  :(

« Last Edit: November 12, 2012, 08:57:29 pm by Mcfly »
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Offline turbojoe78_MA

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Re: Ever so slight wobble at 45 mph
« Reply #18 on: November 12, 2012, 09:56:40 pm »
McMaster Carr ... http://www.mcmaster.com/#spanner-wrenches/=k4xkmc

Style E,  40-42mm, part #6975A16   $19.07

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Offline ron203

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Re: Ever so slight wobble at 45 mph
« Reply #19 on: November 12, 2012, 10:35:31 pm »
McMaster-Carr online here in Atlanta. About $14 delivered same day (have no idea how that happened with a $5 delivery charge). About $.50 worth of steel, but essential. Just buy it.
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Offline Mcfly

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Re: Ever so slight wobble at 45 mph
« Reply #20 on: November 12, 2012, 11:05:58 pm »
Thanks Guys, ordered one tonight.  Hopefully I'll be set for this weekend.

It'll look good on the pegboard too.
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Offline ron203

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Re: Ever so slight wobble at 45 mph
« Reply #21 on: November 12, 2012, 11:12:09 pm »
I swear I looked for one longer than it took to do the deed when I got it. Then, tossed it in the "Connie bag" that holds my Connie Tool Collection Vol 1.0.  :beerchug:  Apparently it's a necessary purchase unless you live near someone who has one.

Stopped the wobble that I was getting at 45-47 mph instantly. I don't believe my bike had ever had that nut tightened. I got it with 5300 miles and now it has 16,000 and I tightened it about 500 miles ago. Voila.
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Offline Mcfly

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Re: Ever so slight wobble at 45 mph
« Reply #22 on: November 12, 2012, 11:24:27 pm »
I never think twice about paying for a tool, because paying for labor is much
more expensive, and just plain scary... btdt.

This wobble is NOT at all a safety concern, it's more of a "My bike doesn't do that!" thing.

I'm sure the stem bearings were never re-packed at 12k miles, as suggested by MaKawi,
so this will facilitate that project, which I see being combined with Sonic springs and fork oil
change in a few weeks.  Til then, I can ride confidently, knowing the steering is proper.

Thanx Again   :beerchug:
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Offline ron203

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Re: Ever so slight wobble at 45 mph
« Reply #23 on: November 13, 2012, 01:42:48 am »
+1 Another instance where the COG membership paid for itself.
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Offline Reaper1

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Re: Ever so slight wobble at 45 mph
« Reply #24 on: November 13, 2012, 03:31:38 am »
 :sign0135:

I read this at work today and tried to get my '99 to wobble on the way home. (At least nothing happened from 80mph down...In gear or not.)  :steeringwheel:

It just wouldn't do it no matter how many times I tried to get it to, so I don't believe it is a "Connie Issue" as some have claimed...  :29:
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