Revs and speedo moving together...

**Thu Apr 01, 2010 5:27 pm » Post: #1 » Download Post**

Fired my bike up today, and whilst warming it up noticed this:

weird!

Shocked

_________________
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**Thu Apr 01, 2010 5:53 pm » Post: #2 » Download Post**

A rev counter for each cylinder..... cool Razz

**Thu Apr 01, 2010 9:04 pm » Post: #3 » Download Post**

You must have had the rear wheel off the floor at that time?
Got to have been on a paddock stand.
The viscosity of the gearbox oil, when cold, will be making the rear wheel spin. Even while in neutral.
The speedo drive is taken from the end of the drive-shaft, where the front sprocket mounts.
This will cause the effect you are seeing.

Last edited by Chester362 on Thu Apr 01, 2010 9:13 pm; edited 1 time in total

**Thu Apr 01, 2010 9:12 pm » Post: #4 » Download Post**

hmm , i'm wondering if it's the pull of the moon doing it at this time of year? Laughing

**Thu Apr 01, 2010 9:27 pm » Post: #5 » Download Post**

Chester362 wrote:You must have had the rear wheel off the floor at that time?
Got to have been on a paddock stand.
The viscosity of the gearbox oil, when cold, will be making the rear wheel spin. Even while in neutral.
The speedo drive is taken from the end of the drive-shaft, where the front sprocket mounts.
This will cause the effect you are seeing.

Bingo! I had the rear wheel, chain and sprockets off actually. Well spotted! Wink

_________________
MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball

**Thu Apr 01, 2010 9:44 pm » Post: #6 » Download Post**

No worries Dave.
Everybody hates a smart-arse and all that!