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Weigh bike with bathroom scale?

Old 05-14-22, 07:51 AM
  #51  
Polaris OBark
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If your bathroom scale systematically estimates your weight to be 5 lbs too heavy, the subtraction method

[(human + bike) - (human)] = bike

gets rid of the systematic error. Since bathroom scales tend to work best between 150 and 200 lbs, this is a perfectly reasonable way to obtain the approximate weight.

So, if the OP of this necro-post still happens to be around, save your money on the fish scale. Those things notoriously exaggerate. ;-)
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Old 05-14-22, 07:53 AM
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Also, just because your digital scale reports a number to the .01 decimal place does not mean that the scale is really anywhere near that precise (let alone accurate). I had an analytical chemistry professor who called that kind of pseudo-precision "science fiction." He was right.
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Old 05-14-22, 09:51 AM
  #53  
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I finally broke down and bought the Park DS-1, after nearly braining myself on my workbench, losing my balance while standing on a scale with an old Schwinn Collegiate.
Of course I didnít drop the bike!
I liked it so much that I bought the DS-2, so I could weigh individual components. In the realm of all the money most of us spend on bikes, and bike stuff, both were peanuts. If you care about the weight, buy the proper tool. It was fun to know that when I started on that old Schwinn it was 39.9lbs, after the rebuild 34.7lbs, still heavy, but a noticeable difference, the owner was pleased.
Tim
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Old 05-14-22, 10:47 AM
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Originally Posted by tkamd73 View Post
I finally broke down and bought the Park DS-1, after nearly braining myself on my workbench, losing my balance while standing on a scale with an old Schwinn Collegiate.
Of course I didnít drop the bike!
#Priorities

I liked it so much that I bought the DS-2, so I could weigh individual components. In the realm of all the money most of us spend on bikes, and bike stuff, both were peanuts. If you care about the weight, buy the proper tool. It was fun to know that when I started on that old Schwinn it was 39.9lbs, after the rebuild 34.7lbs, still heavy, but a noticeable difference, the owner was pleased.
Tim
Nice. But one could argue that 40 lbs is more authentic.

(I grew up in the Chicago area, where and when Schwinn dominated. I think one of the reasons they got away with these incredibly heavy bikes is that there are very few substantial hills to climb in the region.)
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Old 05-14-22, 11:33 AM
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Thanks, just realized I should have put 39lbs 9oz, and 34lbs 7 oz respectively.
Tim
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Old 05-15-22, 11:05 AM
  #56  
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Originally Posted by 5 mph View Post
I've tried to weigh my bike with a bathrooms scale by getting on it by myself to get my weight and then getting off to zero it and then getting back on with my bike held as close to my body as possible and centered and doing the subtraction. Sounds goofy but not everyone likes to visit the bike shop. One of my bikes weighed close enough to specs, but the other two came in 4 to 5 pounds heavy, Does this method give an accurate weight or are the OEM specifics off. The two heavier bikes "feel" heavier than the OEM listed weight.
Do yourself a favor and buy one of these: https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

Only $10
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