The CB1100 Community Forum

^^^^^. Aarrrrrrrrgh, is there a corn glut this year.

Cheers

What's the buzz, tell me what's a happening.

(05-10-2015, 02:07 PM)Rboe_imp Wrote: [ -> ]What's the buzz, tell me what's a happening.

This is the first bike I've owned that had fuel injection that's not water cooled. The water jackets in a water cooled bike may calm the buzz a bit...too.

Met an old co-worker for lunch today; on the way back home I decided to take the 51 north. Once the speed limit changed from 55 to 65 a buzz started coming through the seat, bars and tank at about 65. Got no better and maybe slightly worse as I accelerated to about 95 (just a quick test). Dies off as you get below 65mph.

I "think" this is the first time I have really noticed it because normally I wear thicker rider pants or pull over bike pants. With just blue jeans on the vibes telegraphed through to me pretty good.

I've got a very noticeable vibration that I can feel in my left knee at about 3K RPM. My knee is touching the tank when I feel it . It's driving me crazy.

I've loosed the tank bolt under the seat, lifted the tank a little, and re-installed the bolt (to try and re-settle things). Didn't help at all.

Anyone have a clue what it could be? Right side is fine. No vibes at all.

You probably have a numb right knee. There is nothing to prevent the vibration felt on the left side from appearing on the right.

(05-15-2015, 12:04 PM)Rboe_imp Wrote: [ -> ]You probably have a numb right knee. There is nothing to prevent the vibration felt on the left side from appearing on the right.

LOL! I thought about that, but when I ride the bike facing backwards I feel it in the right knee

Nothing numb yet, but it won't take long for the left knee to be gone if I hang out at 3K RPM for any length of time.

Kidding aside, there's something going on with the left side. There's quite a vibe there. What's behind that black plastic cover under each side of the tank? I can't see how to take that cover off.

That "cover" is a heat shield.

From the '13 manual. Remove the gas tank
Remove the following:
-ignition coil assembly
-turn signal/position relay
-ECM
-bank angle sensor
Remove the left and right trim clips
Remove the bank angle sensor connector stay from the heat shield
Release the ECM box from the bosses then remove the heat protector assembly
Separate the ECM box and heat protector

See, it's easy!

Well I wonder if something is loose under the heat shield (or the heat shield). Wait for it, those knees will numb up!

Well, for me it was the bum and the hands.

Yesterday I tested the bike at 65-85 or so. Vibration free up to 70 this time, slight buzz after than. Very odd.

Also; the Puig small fairing I had on, but ditched because of buffeting around the helmet, I reinstalled for some odd random reason and no buffeting at all. More odd.