upgrading to STI

Quoted message said:

What would it take/cost to upgrade an older (70s) bike to STI?

It depends. You could maybe find some 8-speed STI brifters that would
shift OK on the existing freewheel, which I assume is 6-speed. No
guarantees, but people have gotten 8-speed Campy ERGO to work with such
gears. Front is less of a problem, presuming you have the same brand of
derailleurs.

But, to go 9-speed, you would need the brifters, which will cost
somewhere around $200 new, depending on grade, and at least a rear
derailleur (maybe $50), a new cassette hub, cassette, and chain
($80-150). The front derailleur may or may not work; the cranks probably
will. Oh, yeah, you will have to re-build the rear wheel for the new hub.

All of these costs come down if you can get to a swap meet.

Basically, it will be pretty expensive unless you can get used stuff
cheap. Is it really necessary? No. Best upgrade for an old bike is
clipless pedals. Shifters, etc., would come second, and only it the
bike is worth it.

--

David L. Johnson

Arguing with an engineer is like mud wrestling with a pig...
You soon find out the pig likes it!

Quoted message said:

What would it take/cost to upgrade an older (70s) bike to STI?

9-speed Campy Ergos, paired with a Shimano (index-compatible) rear
derailleur, will shift a 7-speed Shimano-spaced freewheel pretty well,
if you adjust the jockey pulley on the middle cog. The added benefit
of going with 9-speed Ergos, is that all but Xenon are micro-indexed
in the front and will work with any crank/FD combo.

Nashbar has 9-speed Mirage Ergos for $99.99, an already screamin' deal
that's even better if you have one of the ubiquitous 10% off coupon
codes.

In addition to the levers, you may need a RD - Shimano Sora or Tiagra
is fine, but if yours is already marked "SIS" then don't worry about
it. You may also need an index-compatible freewheel. If your current
one is 6 or 7 speed, you should be fine, but if you've got a 5-speed,
you'll need to have the rear triangle and axle respaced. I'd guess
that would be about $40-60 for labor and a new axle.

With the Mirage ergos, you'd be in the neighborhood of $200 for the
whole setup. Sora STIs would be a little more, but not much. Anything
else would be much, much more, due to the need for a new rear wheel,
and much higher STI leverprices.

Hank Wirtz said:

Quoted message said:

What would it take/cost to upgrade an older (70s) bike to STI?

9-speed Campy Ergos, paired with a Shimano (index-compatible) rear
derailleur, will shift a 7-speed Shimano-spaced freewheel pretty well,
if you adjust the jockey pulley on the middle cog. The added benefit
of going with 9-speed Ergos, is that all but Xenon are micro-indexed
in the front and will work with any crank/FD combo.

Nashbar has 9-speed Mirage Ergos for $99.99, an already screamin' deal
that's even better if you have one of the ubiquitous 10% off coupon
codes.

In addition to the levers, you may need a RD - Shimano Sora or Tiagra
is fine, but if yours is already marked "SIS" then don't worry about
it. You may also need an index-compatible freewheel. If your current
one is 6 or 7 speed, you should be fine, but if you've got a 5-speed,
you'll need to have the rear triangle and axle respaced. I'd guess
that would be about $40-60 for labor and a new axle.

With the Mirage ergos, you'd be in the neighborhood of $200 for the
whole setup. Sora STIs would be a little more, but not much. Anything
else would be much, much more, due to the need for a new rear wheel,
and much higher STI leverprices.

I should also mention that my favorite bike is my 1975 Peugeot PX10,
which I've spread the rear triangle on and have retrofit with 10-speed
Campy Centaur.

Quoted message said:

What would it take/cost to upgrade an older (70s) bike to STI?

About $250 more than Ergo.

For STi you need a modern crank and front changer. Plus the shifters
cost more than Campagnolo Ergo.

To do this you need:
Align rear to 130mm
Rear hub (spokes, rim, build)
Cassette
Chain
Shifters
Cable set
Tape
Rear changer

Then for STi, add :
Crank
BB
F Der

All of those things come in a VERY wide variety of style/quality/price
Here's one way to do that:
http://www.yellowjersey.org/ergokit.html
--
Andrew Muzi
www.yellowjersey.org
Open every day since 1 April, 1971

A Muzi said:

Quoted message said:

What would it take/cost to upgrade an older (70s) bike to STI?

About $250 more than Ergo.

For STi you need a modern crank and front changer. Plus the shifters
cost more than Campagnolo Ergo.

To do this you need:
Align rear to 130mm
Rear hub (spokes, rim, build)
Cassette
Chain
Shifters
Cable set
Tape
Rear changer

Then for STi, add :
Crank
BB
F Der

All of those things come in a VERY wide variety of style/quality/price
Here's one way to do that:http://www.yellowjersey.org/ergokit.html
--
Andrew Muziwww.yellowjersey.org
Open every day since 1 April, 1971

I will add nothing more to what Andy says except you be well served to
look at Campag shifters, rather than frequently failing, no fix,
shimano STI-

A Muzi said:

Quoted message said:

What would it take/cost to upgrade an older (70s) bike to STI?

About $250 more than Ergo.

For STi you need a modern crank and front changer.

Why the new crank/BB and front derailleur for Shimano to go from 1970s
5 speed friction freewheel to 9 speed for instance?

Plus the shifters

Quoted message said:

cost more than Campagnolo Ergo.

To do this you need:
Align rear to 130mm
Rear hub (spokes, rim, build)
Cassette
Chain
Shifters
Cable set
Tape
Rear changer

Then for STi, add :
Crank
BB
F Der

All of those things come in a VERY wide variety of style/quality/price
Here's one way to do that:http://www.yellowjersey.org/ergokit.html
--
Andrew Muziwww.yellowjersey.org
Open every day since 1 April, 1971

email hidden said:

A Muzi said:

Quoted message said:

What would it take/cost to upgrade an older (70s) bike to STI?

Quoted message said:

About $250 more than Ergo.

Quoted message said:

For STi you need a modern crank and front changer.

Why the new crank/BB and front derailleur for Shimano to go from 1970s
5 speed friction freewheel to 9 speed for instance?

New front derailleur for sure as the friction front changer is
probably not STI compatible. OP may be able to put a p[inned and
ramped big ring on to help the very positional STI way of doing
business.

Quoted message said:

Plus the shifters

Quoted message said:

cost more than Campagnolo Ergo.

Quoted message said:

To do this you need:
Align rear to 130mm
Rear hub (spokes, rim, build)
Cassette
Chain
Shifters
Cable set
Tape
Rear changer

Quoted message said:

Then for STi, add :
Crank
BB
F Der

Quoted message said:

All of those things come in a VERY wide variety of style/quality/price
Here's one way to do that:http://www.yellowjersey.org/ergokit.html
--
Andrew Muziwww.yellowjersey.org
Open every day since 1 April, 1971