BIKE THREAD
2 lurkers |
200 watchers
Apr 2020
4:24pm, 19 Apr 2020
3,289 posts
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R4R
Not sure whether it belongs here, or on the 'Maintenance for Dummies' thread, but here goes: I'm finally getting round to setting up my bike trainer for use in lockdown/furlough. In the instructions, it talks about different positions for 29", 28" and 26" wheels (even though it's Elite - an Italian make). My wheels are 700c. If this is millimetres, it doesn't seem to match any measurement on the wheel, and doesn't convert to one of these Imperial measurements. Any suggestions? |
Apr 2020
4:32pm, 19 Apr 2020
5,309 posts
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Dai Bank
700c is very broadly a 29inch, try that first R4R
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Apr 2020
4:37pm, 19 Apr 2020
3,291 posts
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R4R
Thanks - If the 700 is millimetres, does it include the height of the tyre as well?
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Apr 2020
4:39pm, 19 Apr 2020
5,310 posts
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Dai Bank
No its the wheel size excluding tyres
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Apr 2020
4:44pm, 19 Apr 2020
3,292 posts
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R4R
Thanks - I've just found explanation(s) on Sheldon Brown
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Apr 2020
5:35pm, 20 Apr 2020
1,880 posts
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MudMeanderer
Dai: 700 does refer to the outer diameter of the tyres. A 700c tyre has a rim diameter of 622mm. 700c is a historical measure, when for some reason they used the OD of the whole wheel. Like 26in or 29in, they're largely nominal and pretty much marketing terms. The only reliable measure of wheel size in my experience is ISO ERTRO. |
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Apr 2020
4:57pm, 21 Apr 2020
5,311 posts
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Dai Bank
Of course you are right MM As penance I shall have to re-read Sheldon Brown's "Tire-sizing" once more having completely forgotten all that I ever learned, if indeed I did learn it all those years ago! Thanks |
Apr 2020
7:28pm, 21 Apr 2020
26,703 posts
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Dave.O
Sheldon Brown, that's a name from the past. I remember emailing him a question years ago, gods knows what it was about but remember getting a very lengthy detailed answer back.
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Apr 2020
9:37am, 23 Apr 2020
8,102 posts
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GordonG
there must be something about the name Sheldon!
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May 2020
12:10am, 20 May 2020
50,029 posts
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GlennR
Bike shortages in the US: nytimes.com |
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