Anyone here riding 40x15?
01-24-06, 12:41 PM
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Anyone here riding 40x15?
I think it translates to ~69 inches.
I trying to build a SS to ride from home to college. (Approx. 5 miles each way)
The road is slightly inclined throughout, with about a 20 degree rise at its worst, lasting for about 1 mile.
Is this gear not relaxed enough?
I trying to build a SS to ride from home to college. (Approx. 5 miles each way)
The road is slightly inclined throughout, with about a 20 degree rise at its worst, lasting for about 1 mile.
Is this gear not relaxed enough?
01-24-06, 12:50 PM
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i ride 40:15 on my scorcher bar fendered peugeot conversion. i think "relaxed enough" is subjective to you and your needs. it's relaxed for me. i typically run 48:16 around town and sometimes ride my track ratio of 48:14 around town too...
01-24-06, 01:27 PM
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I've been riding 40x15 since the weather here got cold and insanely windy. Halifax has a lot of hills, though, and I like to spin...
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01-24-06, 02:13 PM
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i've been riding 40x15 for the last year or so. lovely gear, really it is. out here on the plains, i average about 17 mph @ 80 rpm. headwinds abound, invariably.
01-24-06, 04:00 PM
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48:18, same difference, and in Vermont. Might take some getting used to, but you can definitely do it and it'll make you a stronger climber. Try bullhorns if you need more gription.
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01-24-06, 04:32 PM
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Originally Posted by teiaperigosa
spinning is fun
and acceleration is dope
and acceleration is dope
I run 45x18 in central MO where it's fairly hilly and it fits just about perfectly.
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01-24-06, 04:41 PM
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Yes, I ride 40x15 in uber-flat central Illinois. It gives me a lot of control and as much speed as I really want. I can cruise at 22mph and I max out at about 32mph.
01-24-06, 05:56 PM
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Originally Posted by DoshKel
Noob question:
Would 48x15 work? I'm still trying to get this gearing down
Would 48x15 work? I'm still trying to get this gearing down
so: 48/16=3 *27=81 or (40/15)*27=72 or (48/15)*27=86.4
there can be the same ratio using different gears as well.
(42/14)*27=81 or (48/18)*27=72
01-24-06, 06:01 PM
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Originally Posted by isotopesope
well, it all works... it's just a matter of finding a ratio you are comfortable with. to figure out gear inches divide the cog by the chainring and multiply by the wheel diameter... though most of us are riding 700c, it's pretty much 27 inch... the higher the number the faster it is at top speed, but the harder it is to accelerate or decelerate.
so: 48/16=3 *27=81 or (40/15)*27=72 or (48/15)*27=86.4
there can be the same ratio using different gears as well.
(42/14)*27=81 or (48/18)*27=72
so: 48/16=3 *27=81 or (40/15)*27=72 or (48/15)*27=86.4
there can be the same ratio using different gears as well.
(42/14)*27=81 or (48/18)*27=72
Alright. That really helps a lot... thank you
.
01-24-06, 06:40 PM
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I also run 40x15 .
I have been using it for a while now and I like it alot...
Just like the poster above mentioned, It gives me good control.. plenty of room to spin up faster if I want, or hold 22 mph @ 100 rpms for a good distance easily =)
I have been using it for a while now and I like it alot...
Just like the poster above mentioned, It gives me good control.. plenty of room to spin up faster if I want, or hold 22 mph @ 100 rpms for a good distance easily =)
01-24-06, 07:33 PM
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i ride some pretty large hills(atleast i think so) i don't knnow the grade but i ride 42x15 and am happy with it
01-24-06, 08:09 PM
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OP here. Thanks for the reply guys.
I know some of you responded with "having control" with the gears. I'm assuming you're all riding fixed as opposed to SS? My intention is to build a SS with a coaster brake and the 40:15 ratio... any opinions on this? Thanks.
I know some of you responded with "having control" with the gears. I'm assuming you're all riding fixed as opposed to SS? My intention is to build a SS with a coaster brake and the 40:15 ratio... any opinions on this? Thanks.
01-24-06, 10:43 PM
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Originally Posted by isotopesope
well, it all works... it's just a matter of finding a ratio you are comfortable with. to figure out gear inches divide the cog by the chainring and multiply by the wheel diameter... though most of us are riding 700c, it's pretty much 27 inch... the higher the number the faster it is at top speed, but the harder it is to accelerate or decelerate.
so: 48/16=3 *27=81 or (40/15)*27=72 or (48/15)*27=86.4
there can be the same ratio using different gears as well.
(42/14)*27=81 or (48/18)*27=72
so: 48/16=3 *27=81 or (40/15)*27=72 or (48/15)*27=86.4
there can be the same ratio using different gears as well.
(42/14)*27=81 or (48/18)*27=72
Thanks. That response helped me as well. So I ride a 42:16 = 70.8. And the lower the final number, the easier the gearing. While I can pedal up hills in this gear, I'm pushing and pulling and huffing and puffing.
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