Converting 7 sp to 9 sp

On Mon, 07 Mar 2005 22:49:40 GMT, "Pedantus" <[email hidden]>

may have said:

Being that I bought a 9speed Shimano rear hub/wheel for my 89' Royce Union
Hybrid MTB, and its goes into the frame with just a smidgen of coaxing,
I'm of course tempted to change the cassette from the old 7 speed (which I
put on it using an extra spacer), to a 9 speed cassette.

I would be, too, though with the stash of 8sp cassettes that I've got
squirreled away, I'd probably use one of those instead. (I was going
to join Packrats Anonymous, but they meet on the same night as the
Procrastinator's Guild chapter that I've been meaning to join.)

Quoted message said:

I know, I need to use the thinner chain for the cassette's closer spacing
(4.5mm vs 5.0mm) , and I like friction thumb shifters (no problem with
indexing) , so can I use my existing good as new XT front and rear
derailleurs, or no?

The only possible hitch that occurs to me might be if the thumb
shifters are a little shy of the amount of throw that you need in the
cable. If so, you'll be a gear short of a full selection in one
direction or the other until you can scrounge a different shifter.

I say "go for it."

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Pedantus said:

Being that I bought a 9speed Shimano rear hub/wheel for my 89' Royce Union
Hybrid MTB, and its goes into the frame with just a smidgen of coaxing,
I'm of course tempted to change the cassette from the old 7 speed (which I
put on it using an extra spacer), to a 9 speed cassette.
I know, I need to use the thinner chain for the cassette's closer spacing
(4.5mm vs 5.0mm) , and I like friction thumb shifters (no problem with
indexing) , so can I use my existing good as new XT front and rear
derailleurs, or no?

Yes you can-

Quoted message said:

Thanks very much,
Rog

[Got my wife to go out on the Schwinn World Tourist you guys helped me
convert into a smooth compact triple 15sp. She's recuperating from a total
hip replacement.]
http://pedantus.free.fr/GeezerBikes_02.jpg

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

Quoted message said:

On Mon, 07 Mar 2005 22:49:40 GMT, "Pedantus" <[email hidden]>

may have said:

Being that I bought a 9speed Shimano rear hub/wheel for my 89' Royce
Union
Hybrid MTB, and its goes into the frame with just a smidgen of coaxing,
I'm of course tempted to change the cassette from the old 7 speed (which I
put on it using an extra spacer), to a 9 speed cassette.

I would be, too, though with the stash of 8sp cassettes that I've got
squirreled away, I'd probably use one of those instead. (I was going
to join Packrats Anonymous, but they meet on the same night as the
Procrastinator's Guild chapter that I've been meaning to join.)

Quoted message said:

I know, I need to use the thinner chain for the cassette's closer
spacing
(4.5mm vs 5.0mm) , and I like friction thumb shifters (no problem with
indexing) , so can I use my existing good as new XT front and rear
derailleurs, or no?

The only possible hitch that occurs to me might be if the thumb
shifters are a little shy of the amount of throw that you need in the
cable. If so, you'll be a gear short of a full selection in one
direction or the other until you can scrounge a different shifter.

I say "go for it."

I seem to recall having to limit the excessive travel in the throw, so
might it be good.

Thanks...🙂
Rog

"Qui Si Parla Campagnolo" <[email hidden]> wrote in message
news:1110288962.760d2607dea30f591260b23db9119345@teranews...

Quoted message said:

Pedantus said:

Being that I bought a 9speed Shimano rear hub/wheel for my 89' Royce
Union Hybrid MTB, and its goes into the frame with just a smidgen of
coaxing, I'm of course tempted to change the cassette from the old 7
speed (which I put on it using an extra spacer), to a 9 speed cassette.
I know, I need to use the thinner chain for the cassette's closer
spacing (4.5mm vs 5.0mm) , and I like friction thumb shifters (no problem
with indexing) , so can I use my existing good as new XT front and rear
derailleurs, or no?

Yes you can-

Great..🙂 So, now which cassette do you think is best for my trekking MTB
application? I don't I've any use for an 11t, or probably even a 12t
sprocket, for instance. I guess I'd I'd like to see a nice even spead
between 13 and 32.

Rog