Cassette Spacing Uniformity

[Ruby60]

Hi,
Does anyone have a procedure for getting equal cassette spacing between three wheelsets?
Here's the issue: I have a Velocity Spartacus campy splined wheel 10S,
a Campy 2006 freehub wheel 10S, and a Powertap shimano splined wheel ( using a Wheels Manufacturing 10S cassete). The interchangeability of these wheels is not in synch between the wheels meaning I have to fiddle with making a small cable adjustments if I change wheels.
I have hub-cassette spacers in all thicknesses, so I can space as needed.
What determines the "master" wheel, to which the other two wheels are spaced to match?
Can I measure a gap somewhere and get a reliable measurement between different cassettes? Or will it be trial and error?
Thanks,
Ruby

 

[Fatclimber]

Well since you only have one option as to where to put the spacers (prior to putting on the cassette), your reference wheel will have to be the one in which the cassette has the greatest offset to the right. Trial and error, just put them on your bike one at a time with your chain out of the way (I like to remove my lower jockey wheel and let the chain dangle) and see where your cogs line up relative to the upper jockey wheel on your rear derailleur. You'll probably just have to eyeball it from there to get the appropriate spacer width.

 

[dsut4392]

Hi,
Does anyone have a procedure for getting equal cassette spacing between three wheelsets?
Here's the issue: I have a Velocity Spartacus campy splined wheel 10S,
a Campy 2006 freehub wheel 10S, and a Powertap shimano splined wheel ( using a Wheels Manufacturing 10S cassete). The interchangeability of these wheels is not in synch between the wheels meaning I have to fiddle with making a small cable adjustments if I change wheels.
I have hub-cassette spacers in all thicknesses, so I can space as needed.
What determines the "master" wheel, to which the other two wheels are spaced to match?
Can I measure a gap somewhere and get a reliable measurement between different cassettes? Or will it be trial and error?
Thanks,
Ruby

Speaking theoretically here as I haven't felt the need to do it (the two MTB wheels I have swapped between only need a tiny fiddle with cable, limit screw settings are fine):

Can't you just measure the horizontal distance between the axle face that contacts the dropout and the face (or centre of the tooth to be really precise) of the small cog? Choose the wheel where this distance is smallest with no spacer mounted as your "master" and space out the cassette on your other wheels to match. This will give you the least outboard chainline.

 

[Fatclimber]

Speaking theoretically here as I haven't felt the need to do it (the two MTB wheels I have swapped between only need a tiny fiddle with cable, limit screw settings are fine):

Can't you just measure the horizontal distance between the axle face that contacts the dropout and the face (or centre of the tooth to be really precise) of the small cog? Choose the wheel where this distance is smallest with no spacer mounted as your "master" and space out the cassette on your other wheels to match. This will give you the least outboard chainline.

That would be easier than my method if you have a way to measure it.

 

[Ruby60]

Thanks Fatclimber and dsut4392 for the suggestions.
I was thinking that the campy wheel should be the master, but it may not be.
I'll follow your suggestions and measure them out.
Thanks,
Ruby