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Old March 20th 18, 10:18 PM posted to rec.bicycles.tech
Joerg[_2_]
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Posts: 6,016
Default Bicycle bottle diameters, why different?

On 2018-03-20 15:01, sms wrote:
On 3/20/2018 1:54 PM, Joerg wrote:

snip

The Stansport is 2.820" (71.5mm) and the Cal Bike Gear is 2.885"
(73.3mm). Even worse is that the indentation ring is off by about
0.300". How can this happen? In medical, aerospace or other
electronics we'd get flogged for that.


There is no standards body for water bottles. The diameter is supposed
to be 2.875" (73mm) with the indentation on tall bottles at 5.0" (127mm).


The center of the indentation is 5-1/2" on the Stansport bottle and
5-3/4" on the Cal Bike bottle (which fits all holders like a glove).


You should write a letter to Stansport. Maybe consider contacting an
attorney about a class action lawsuit. Claim that the bottle bounced out
on a trail and a mountain lion took it. Jay can handle the lawsuit for you.


That would only work if the mountain lion then choked on it and needed
expensive medical attention, followed by a few cat shrink sessions. For
a class action it would have to affect his tribe and two or three others.


I can also wrap some sort of bungee cord around it, hobo-style.
However, that gets old and the bottle won't go back in easily without
pushing the bungee down.


Use layers of heat shrink tubing until you get that extra 1.5mm or so.
Of course that size heat shrink tubing will likely cost more than just
buying a proper bottle.



The question is, how do you know if a bottle is proper when buying one
online?

--
Regards, Joerg

http://www.analogconsultants.com/
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