Dura Ace 10-speed wheel interchange

Pete Beall said:

Rusty is riding Dura Ace 10-speed. In races he's using Reynolds
wheels, while for training he's using an Ultegra hub wheel. These two wheels
require a radical adjustment in the derailleur after interchange in order to
get smooth shifting. His last race, adjusted for the Reynolds, he had to
take a neutral wheel which shifted fine; this seems to say that the older
Ultegra wheel is the "odd man out."

Anyone have any idea what's going on here and how to correct it? I
'd like to get him set up with some heavy duty interchangeable wheels

You need to play with spacers between the right cone and its locknut.

If you need to loosen the cable to fix the indexing, adding thin spacers
will correct it, and conversely.

There are 0.1 mm shim washers that will work for this, commonly used for
chainring bolts but they will also match up with a standard 10 mm axle.

Sheldon "Interchangeabilitude" Brown
+-------------------------------------------------------+
| Do what you can, with what you have, where you are. |
| --Theodore Roosevelt |
+-------------------------------------------------------+
Harris Cyclery, West Newton, Massachusetts
Phone 617-244-9772 FAX 617-244-1041
http://harriscyclery.com
Hard-to-find parts shipped Worldwide
http://captainbike.com http://sheldonbrown.com

I'll have to play with this. The "bad" wheel uses a spacer and I'm not sure
about the "good" wheels. Thanks for the input

Pete

"Sheldon Brown" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Pete Beall said:

Rusty is riding Dura Ace 10-speed. In races he's using

Reynolds

Quoted message said:

Quoted message said:

wheels, while for training he's using an Ultegra hub wheel. These two

wheels

Quoted message said:

Quoted message said:

require a radical adjustment in the derailleur after interchange in

order to

Quoted message said:

Quoted message said:

get smooth shifting. His last race, adjusted for the Reynolds, he had to
take a neutral wheel which shifted fine; this seems to say that the

older

Quoted message said:

Quoted message said:

Ultegra wheel is the "odd man out."

Anyone have any idea what's going on here and how to correct

it? I

Quoted message said:

Quoted message said:

'd like to get him set up with some heavy duty interchangeable wheels

You need to play with spacers between the right cone and its locknut.

If you need to loosen the cable to fix the indexing, adding thin spacers
will correct it, and conversely.

There are 0.1 mm shim washers that will work for this, commonly used for
chainring bolts but they will also match up with a standard 10 mm axle.

Sheldon "Interchangeabilitude" Brown
+-------------------------------------------------------+
| Do what you can, with what you have, where you are. |
| --Theodore Roosevelt |
+-------------------------------------------------------+
Harris Cyclery, West Newton, Massachusetts
Phone 617-244-9772 FAX 617-244-1041
http://harriscyclery.com
Hard-to-find parts shipped Worldwide
http://captainbike.com http://sheldonbrown.com

Pete Beall said:

Rusty is riding Dura Ace 10-speed. In races he's using Reynolds
wheels, while for training he's using an Ultegra hub wheel. These two wheels
require a radical adjustment in the derailleur after interchange in order to
get smooth shifting. His last race, adjusted for the Reynolds, he had to
take a neutral wheel which shifted fine; this seems to say that the older
Ultegra wheel is the "odd man out."

Anyone have any idea what's going on here and how to correct it? I
'd like to get him set up with some heavy duty interchangeable wheels for
Ecology Pintler [http://www.ecologycenterclassic.org/pintler.htm] where,
last year, we had 23+ punctures in the pro/I/II and had to cut the race by a
lap because we ran out of wheels.

Pete

In my experience your observation is right: that Ultegra is slightly
different from Dura-Ace (and many high-end aftermarket hubs). I think
Ultegra is slightly wider.

I'd recommend carefully measuring a Dura-Ace and matching all his
wheels to that. From memory here (so it's probably wrong!) the
Dura-Ace hubs I've measured are around 40.5 +/-0.2mm from the dropout
to the cassette stop.

Why not get a 10 speed cassette for the other wheel?

They are expensive, however, you are prematurely wearing the chain out, and
DA10 chains are not super durable to begin with. Once the chain is worn its
only a matter of time before the DA10 cassette gets eaten as well.

"dianne_1234" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Pete Beall said:

Rusty is riding Dura Ace 10-speed. In races he's using Reynolds
wheels, while for training he's using an Ultegra hub wheel. These two

wheels

Quoted message said:

Quoted message said:

require a radical adjustment in the derailleur after interchange in order

to

Quoted message said:

Quoted message said:

get smooth shifting. His last race, adjusted for the Reynolds, he had to
take a neutral wheel which shifted fine; this seems to say that the older
Ultegra wheel is the "odd man out."

Anyone have any idea what's going on here and how to correct

it? I

Quoted message said:

Quoted message said:

'd like to get him set up with some heavy duty interchangeable wheels for
Ecology Pintler [http://www.ecologycenterclassic.org/pintler.htm] where,
last year, we had 23+ punctures in the pro/I/II and had to cut the race

by a

Quoted message said:

Quoted message said:

lap because we ran out of wheels.

Pete

In my experience your observation is right: that Ultegra is slightly
different from Dura-Ace (and many high-end aftermarket hubs). I think
Ultegra is slightly wider.

I'd recommend carefully measuring a Dura-Ace and matching all his
wheels to that. From memory here (so it's probably wrong!) the
Dura-Ace hubs I've measured are around 40.5 +/-0.2mm from the dropout
to the cassette stop.

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"JayofMontreal" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Why not get a 10 speed cassette for the other wheel?

Why not indeed?

Quoted message said:

They are expensive, however, you are prematurely wearing the chain out, and
DA10 chains are not super durable to begin with. Once the chain is worn its
only a matter of time before the DA10 cassette gets eaten as well.

Kinda answered your own question there, Jay.

PS Please don't top-post.
--
Mark South
Citizen of the World, Denizen of the Net
<<Tiens! Ce poulet a une grenade!>>