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How do you weigh a motorcycle?

Started by Dragsterhund, February 24, 2009, 02:48:29 PM

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Dragsterhund

I want to weigh my 748. Can this be done with two bathroom scales, one under each wheel?
2003 Ducati Monster 800S i.e.
1999 Ducati 748S Track Bike
2011 Ducati 848 Track Bike (Ex Jake Holden AMA DSB bike)
1967 Ducati Monza 250
2008 Yamaha TTR 125

1973 Honda CB450 (Sold)
1972 Honda CB450 (Sold)
2002 Suzuki SV650 Track Bike (SOLD!)
1994 Kawasaki EX500 (SOLD!)

needtorque

i have a feeling the wieght would not come out right.  i think each scale would have more than half the weight registering but maybe I am wrong.
Who insures the FDIC?

stopintime

Yes, it can.

I just spoke to a scale guru (salesman) today. He mentioned that most battery scales will start up with a cold "brain" which will be more accurate after a few measuring cycles. Keep it warm and let it measure up to ten times, the last will be more accurate. A cheap bathroom scale might very well be "quite a few" pounds off, so don't trust your readings too much. The best scale, whatever for, they carry cost about $ 200,000  :o
252,000 km/seventeen years - loving it

ScottRNelson

You can weigh your motorcycle using one bathroom scale and be accurate to within a couple of pounds if you have a decent scale.  I've weighed my two bikes this way.  I made sure that the bike was level when I weighed it, so the tire not on the scale was on a 2x4 of roughly the same height.

I came up with 495 wet for my ST2 and 461 wet for my 888.  I used a Tanita digital scale that calibrates itself every time it is turned on, so it is quite accurate, within the 0.5 pound range it displays, at least.

Unfortunately, my scale won't go beyond 300 pounds, so I couldn't find out the weight distribution with me on either of the bikes.
Scott R. Nelson, 2001 XR650L, 2020 KTM 790 Adv R, Meridian, ID

herm

pull on to a scale at a weight station
Never wrestle with pigs. You both get dirty, and the pigs like it...

JetTest

Or a local scrap/recycler. They should have a scale your bike will fit on.

Buckethead

Quote from: JetTest on February 24, 2009, 04:45:02 PM
Or a local scrap/recycler. They should have a scale your bike will fit on.

Just make sure to magnet sweep/broom sweep it before hand.
Quote from: Jester on April 11, 2013, 07:29:35 AM
I can't wait until Marquez gets on his level and makes Jorge trip on his tampon string. 

aaronb

#7
Quote from: herm on February 24, 2009, 04:16:04 PM
pull on to a scale at a weight station

a scale designed for weighing a 50 ton semi might not be the most accurate on a 400lb motorcycle

i would just stick to the bathroom scale
Milwaukee, WI
'07 s2r1k, '81 honda cb400t

WTSDS

>>Unfortunately, my scale won't go beyond 300 pounds, so I couldn't find out the weight distribution with me on either of the bikes.

Er, I'd be careful there, one wheel on a 2x4, one on a scales, tippy toe on the floor........

It's hard enough trying to measure sag levels on your own with both wheels on a firm footing

I've dropped more 'bikes in the shed than on the road
2000 Monster Dark 900 ie   Stock except for low Staintunes and a centrestand. 15:39 sprockets make for excellent highway gearing

herm

Quote from: aaronb on February 24, 2009, 07:28:15 PM
a scale designed for weighing a 50 ton semi might not be the most accurate on a 400lb motorcycle

i would just stick to the bathroom scale

ok,...........take it to the local land fill. their scales should easily be able to do the job
Never wrestle with pigs. You both get dirty, and the pigs like it...

Norm

Scrap yard, easy, free (usually) and certified.

TiAvenger


Drjones

Quote from: needtorque on February 24, 2009, 02:56:42 PM
i have a feeling the wieght would not come out right.  i think each scale would have more than half the weight registering but maybe I am wrong.

They'll read different because of the CG not being perfectly centered between the wheels, but the sum of the two scales will be the total weight of the bike.
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mookieo2

You could take apart the bike and weigh it piece by piece then just add it all up.  ;D

mossimo

Weigh station (be sure to dismount and get off the scale for an accurate reading  ;D) or the recycling center has pretty accurate scales.  
"Good judgment comes from bad experience, and a lot of that comes from bad judgment."  Will Rogers.