Weighing a bike.

[stinkwheel]

All of which shows why I shouldn't stray beyond the realms of straight arithmetic in my maths.

Should've seen the pages of working when I was calculating the compression ration on my bullet!
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[1198]

[Nobby the Bastard]

It's all about moments,but I failed my a level before most of you were born and i really cant be arsed to look up the math.
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trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Sprint ST 1050

[chickenstrip]

[weasley]

[Kawasaki Jimbo]

[Kawasaki Jimbo]

Thanks everyone.

Results!

Kawasaki ZX6R G2 (1999) with about 3/4 of a tank = 207kg. (456 lbs or 33 stone.)
50:50 weight distribution.

Yamaha YZF-R1 5PW (2003) with about 1/4 of a tank = 202kg and 50:50.

Both a bit higher than I was expecting based on manufacturer's claims back in the day, although I was already suspicious. Moving the bikes around it's obvious that the Yamaha carries its weight lower.

Techniques;

Two bathroom scales, one under each wheel, switching them round front to back for comparison. (There was good agreement.)
Bathroom scales under one wheel, other wheel raised with wood to level it. Record weight, then switch around and weigh the other end to get the total.

All weighings agreed within 2kg between techniques, and the easiest was not surprisingly with one set of scales and a broad wooden plank.

[Kawasaki Jimbo]

Here's why it mattered;

most manufacturer-listed dry weights in the past were with all "consumables" taken out, which means no fluids whatsoever, no battery, tires, brake pads...obviously an unreasonable and unrealistic measure.

(Wish I'd found those true weight listings earlier!)

Why new bikes aren’t as heavy as you think

I've just remembered the Kawasaki has a big chain and lock under the seat.

[Sister Sledge]

The 2 kg difference ties in nicely with the 'missed' triangle of mass when weighing using one set of scales. An interesting exercise that.
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CCM 404 DS

[weasley]

[Sister Sledge]

[weasley]

To quote Kawasaki Jimbo:

[G]

Triumph Track bike I had weighed in at 175kg with a little fuel I think some years ago on a set of track scales.
Think I then got that down to 165kg with a few bits removed/couple of lighter bits - big changes were no lower fairings, lighter battery, lighter rear wheel from later bike.

[MCN]

[Kawasaki Jimbo]