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Newbie cassette query

Old 12-02-14, 03:33 AM
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Brendan992
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Newbie cassette query

Hi there

After a 20 year absences I am getting back into cycling by building a bike with various parts off ebay. I have been learning along the way and there has been quite a bit of learning as nothing seems to be standard.

Anyway, I bought a wheel and 8 speed campy cassette. All seems ok though it's unclear which way the individual campy sprockets go on to the splined hub. On one side of the sprockets it has 'brevit campagnolo' and the other side the number of teeth and letters A B C D... around the edge. So should 'campagnolo' be facing out(towards me) or the other way around. On other cassettes there seems to be only one way to put them on.

Also where the letters are on the one side are they suppose to match up or something?There must be a reason, but then it is Italian so may be not(no offence to Italians but have an Italian car...)May be it doesn't matter but it would be nice if I know.

Thanks
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Old 12-02-14, 03:55 AM
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Drew Eckhardt 
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Originally Posted by Brendan992 View Post
Hi there

After a 20 year absences I am getting back into cycling by building a bike with various parts off ebay. I have been learning along the way and there has been quite a bit of learning as nothing seems to be standard.

Anyway, I bought a wheel and 8 speed campy cassette. All seems ok though it's unclear which way the individual campy sprockets go on to the splined hub. On one side of the sprockets it has 'brevit campagnolo' and the other side the number of teeth and letters A B C D... around the edge. So should 'campagnolo' be facing out(towards me) or the other way around. On other cassettes there seems to be only one way to put them on.

Also where the letters are on the one side are they suppose to match up or something?There must be a reason, but then it is Italian so may be not(no offence to Italians but have an Italian car...)May be it doesn't matter but it would be nice if I know.

Thanks
The writing goes out, towards the drive side drop-out.

ExaDrive cassettes ( everything from 1994 onward) have one wide spline and only engage the corresponding freehub one way.

The letters indicate how the shift ramp is located relative to the wide spline with up to four (A through D) variations. The letters don't line up with each other, although the dots form a spiral when correct combinations are used. For example, a 17A should be followed by a 18C or 19A.

Since 1999 the only available combinations have been
12B 13B 14B 15B 17B 19A 21A 23A
13A 14A 15A 16A 17A 19A 21A 23A
13B 14B 15B 17B 19A 21A 23A 26A

For lower gearing use a triple crank - 30x23 is like 39x30 and 30x26 the same as 39x34. All 8 speed left levers will run one using 7 of the 12 clicks.

Last edited by Drew Eckhardt; 12-05-14 at 07:51 PM.
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Old 12-02-14, 04:19 AM
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jimc101
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Originally Posted by Brendan992 View Post
All seems ok though it's unclear which way the individual campy sprockets go on to the splined hub.
With any cassette, the splines will only allow the individual sprockets to be fitted in the correct direction.
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Old 12-02-14, 01:42 PM
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Brendan992
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Thanks for the replies, I thought Campagnolo would be on the side that you see.
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Old 12-11-14, 11:15 PM
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ManuelaDR
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Having almost any cassette, this splines will only permit the individual sprockets to become built in the correct course.
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Old 12-12-14, 07:41 AM
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Bill Kapaun
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Originally Posted by jimc101 View Post
With any cassette, the splines will only allow the individual sprockets to be fitted in the correct direction.
IF you consider either direction OK on a Uniglide cassette.
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Old 12-12-14, 09:38 AM
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paulkal
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On the first 8 speed hubs, the splines are identical. The letters are to align the sprockets.
The Exa drive hubs and cassette the splines are keyed.
Here is the table to correctly install the sprockets:
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Old 12-13-14, 04:05 AM
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Brendan992
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Thanks for this, I thought there must be some significance of the letters on the sprockets
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