campagnolo matchbox front changer capacity?

bagpuss · Aug 3, 2017

After a rumage I found two nos simplex steel chain rings.
1/ A 44 tooth 5 pin outer that lines up with my William AB crank arm
2/ A 28 tooth 3 pin inner that marries up with the outer ring .
I have plenty of c/r bolts to try .

Does any one know if a Campagnolo match box front changer has the capacity to handle it {16 tooth drop} ?

I am off to bed :roll:

Midlife · Aug 3, 2017

According to Velobase max difference is 11 teeth, even then that would be pushing it. BITD they appeared on front chainset with 46/48 chainrings. A whole 2 teeth difference up front lol

Spokesmann · Aug 3, 2017

Im restoring a 1955 Carlton Corinthian using a 52/40 chainset, I'm going to try and sue one of these mechs, as its too nice to have hanging around the workshop.

I have a 1960 Flyer with one but the machine is stepped geared and had a difference of only of about 4 teeth...

Im going to give the other a try!!

bagpuss · Aug 3, 2017

Re:

Hmm
To big a difference I reakon .
As Shaun said couple of teeth even four,goes with my thinking as well. Going a differenterent route . :roll:
1950's, The Simplex tourist front changer{ juy 56 }I have, has a 24 teeth capacity .
https://www.google.co.uk/search?q=simpl ... 94&bih=510

Also have a very old Simplex grand tourisme complete with its long spring.
https://www.google.co.uk/search?q=simpl ... elGUo3VMuM:
Both are unused {nos}They have been hiding in the shed for the last 10 years for the right moment.
Also have a pair of Simplex alloy down tube levers circa late 50's 60's i think
I can use the campagnolo f/r on the frame I do not currently own. :idea: :facepalm:

mattsccm · Aug 3, 2017

Mine is working perfectly well on a 28/38 chainset.

Wheelnut · Aug 3, 2017

Re:

I use these front changers on a few bikes and they cope with a 12 tooth difference, no problem. The limiting factor is usually the rear mech, not the front one.

Spokesmann · Aug 4, 2017

Im using a GS mech on the front and the back of my Corinthian build. Just going to go with it and see. Ill use a 22 at the back though...

bagpuss · Aug 4, 2017

Re:

Assembling the chainset over the weekend . Then rebuild the rear wheel from a double fixed to one that will take a free wheel.
will try to stick with the campagnolo for the Carlton.
Will just have to see if it will work . A 16 tooth drop is a long one . Using a steel gran sport at the back marked for a 28 sized f/w .
Several projects,some of which are long standing to try and finish...happy days :roll:

Spokesmann · Aug 4, 2017

I use a GS with a 24 on the back, it shifts well enough, but not what I would call smooth. Better going down to the small sprocket than in the opposite direction.

campagnolo matchbox front changer capacity?

bagpuss

Midlife

Retro Wizard

Spokesmann

bagpuss

mattsccm

Senior Retro Guru

Wheelnut

Retro Guru

Spokesmann

bagpuss

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