W
wle
Guest
ok.
i have a plain vanilla road bike with 53-42 chain ring in
front and 7 speed, 26-13 cassette in the rear.
700c wheels.
i ran through mr sheldon brown;s gear calculator and
found out that there is overlap between 3 pairs of gears,
they are practically the same.
comes out like this..
[mph @ 100 rpm]
32.7 24.7
28.4 21.4
25.0 18.9
22.4 16.9
20.3 15.3
18.5 14.0
16.4 12.4
if the speed i want is between 20 and 25 mph, no choice is good,
they all seem to involve too much cross chaining.
or is it?
should i only worry about going all the way across all 6[24.7 or 16.4]?
is 5 gears ok?
surely 4 would be ok?
how much is too much cross chaining?
i regularly do a '5 gear cross', small front ring and number 6 on the back.
but usually i steer clear of large front + 1-4 in the back.
wle.
i have a plain vanilla road bike with 53-42 chain ring in
front and 7 speed, 26-13 cassette in the rear.
700c wheels.
i ran through mr sheldon brown;s gear calculator and
found out that there is overlap between 3 pairs of gears,
they are practically the same.
comes out like this..
[mph @ 100 rpm]
32.7 24.7
28.4 21.4
25.0 18.9
22.4 16.9
20.3 15.3
18.5 14.0
16.4 12.4
if the speed i want is between 20 and 25 mph, no choice is good,
they all seem to involve too much cross chaining.
or is it?
should i only worry about going all the way across all 6[24.7 or 16.4]?
is 5 gears ok?
surely 4 would be ok?
how much is too much cross chaining?
i regularly do a '5 gear cross', small front ring and number 6 on the back.
but usually i steer clear of large front + 1-4 in the back.
wle.