A little bird told me. Campag content..subcompact

[fiamme red]

Jan Heine on why 48/33 is superior to 48/32: https://janheine.wordpress.com/2019/...-herse-cranks/.

"Why the 15-tooth step between chainrings rather than the more common 16-tooth? To understand why a 48/32 doesn’t work well, let’s look at how ramped-and-pinned chainrings work..."

[fa63]

Originally Posted by fiamme red

Jan Heine on why 48/33 is superior to 48/32: https://janheine.wordpress.com/2019/...-herse-cranks/.

"Why the 15-tooth step between chainrings rather than the more common 16-tooth? To understand why a 48/32 doesn’t work well, let’s look at how ramped-and-pinned chainrings work..."

I will let Praxis know that they are doing it all wrong; even though my Praxis 48/32 cranksets all shift as good if not better than any Shimano or Campy crankset :-)

[jtbadge]

Originally Posted by fiamme red

Jan Heine on why 48/33 is superior to 48/32: https://janheine.wordpress.com/2019/...-herse-cranks/.

"Why the 15-tooth step between chainrings rather than the more common 16-tooth? To understand why a 48/32 doesn’t work well, let’s look at how ramped-and-pinned chainrings work..."

"We couldn't figure out how to put a 32t ring on our crank arms, so let us sell you on why more teeth is better!"

[ravdg316]

Originally Posted by jtbadge

"We couldn't figure out how to put a 32t ring on our crank arms, so let us sell you on why more teeth is better!"

Why would it be more difficult to do 32 rings than 33 rings tho

[oldpotatoe]

"Why the 15-tooth step between chainrings rather than the more common 16-tooth? To understand why a 48/32 doesn’t work well, let’s look at how ramped-and-pinned chainrings work..

My aunt maitilda's mustache..gee, 'back in the day'...non ramped and pinned big rings worked just fine and dandy. a 15t difference rather than a 16t difference means a whole bunch of nothing...50/34s and other 16t differences have been working spectacularly well for how long??

Why would it be more difficult to do 32 rings than 33 rings tho

Might involve a whole different crank design to accommodate the 32t small ring instead of the 33(or 34)...

[fa63]

Originally Posted by ravdg316

Why would it be more difficult to do 32 rings than 33 rings tho

Because it is not possible to go below 33 teeth on a 110 BCD crankset without some tricks. This is what Praxis had to do:

"For this five-bolt crank and its 110mm spider Praxis has come up with a clever fourth way: dispense with the chainring nut and screw the bolt straight into the inner ring. That provides the necessary couple of millimetres of extra space needed for a 32-tooth ring.

The hole in the inner ring is very close to the bottom of a trough between teeth, though, so you can’t go smaller with this trick. And you probably can’t just put the Praxis rings on a 110mm five-arm chainset that you happen to have spare. To make room for the chain on the 32-tooth ring, Praxis has machined a shoulder into the arm of the crank; without it, the chain will almost certainly hit the spider arm and skip."

[bicycletricycle]

Originally Posted by jtbadge

"We couldn't figure out how to put a 32t ring on our crank arms, so let us sell you on why more teeth is better!"

They are one of the only crank manufacturers that does make a road crank that takes rings below 33 teeth. They have rings down to 24 for the inner position.

I have not read the article about the 33/48 combo.

I can say that I have been running 33/46 with an 11-32 cassette for 3 years now and I like it very much.

[paredown]

Correct me if I am wrong, but I thought there was proven reduced efficiency with smaller rear cogs <13 teeth?

And I agree that the whole Ergo evolution--8 speed forward was brilliant and not "losing their way"--precise, well built, excellent brakes (especially the matched dual pivots)--and the high point was perhaps 2004-2006-ish.

Then some craziness ensued--UltraTorque, wait, no Powertorque--oh wait Centaur will be the first, no it's the second, Ultrashift--oh, no dumping on cheap groups, some pretty bad finishing on cheaper groups, too many "standards" and the drying up of even the basic parts.

I could still probably source a NOS brake lever blades for Campy Record or Nuovo Record from the '70s/80s--but I can't get the same for Record 10 carbon 10 years later? Couldn't they have made a ****load of generic carbon levers with no group markings?

[HTupolev]

Originally Posted by jtbadge

"We couldn't figure out how to put a 32t ring on our crank arms, so let us sell you on why more teeth is better!"

Originally Posted by oldpotatoe

Might involve a whole different crank design to accommodate the 32t small ring instead of the 33(or 34)...

RH cranks have a 70mm bolt circle, and they offer inner rings down to 24T, including a 32T ring. RH cranks are all geared to order, so you can buy one in 48-32.

It's just that the ramped version of their 48-tooth outer chainring is designed for pairing with a 33T inner.

[oldpotatoe]

but I can't get the same for Record 10 carbon 10 years later

How many ya want? Not hard to find, just expensive.

[jtbadge]

Originally Posted by HTupolev

RH cranks have a 70mm bolt circle, and they offer inner rings down to 24T, including a 32T ring. RH cranks are all geared to order, so you can buy one in 48-32.

Fair enough, I didn't read that closely, but the point stands - other manufacturers have figured out how to make the the 48-32 gap shift fine.

[zennmotion]

Originally Posted by fa63

I will let Praxis know that they are doing it all wrong; even though my Praxis 48/32 cranksets all shift as good if not better than any Shimano or Campy crankset :-)

Geez, this is global conspiracy! I need to alert Sugino as well, I'm afraid my 48/32 OX901d will essplode or mis-shift one day and send me flying into oncoming traffic!

Other than the fear factor, it's a really nice spread, the 48t is the sweet spot for rolling terrain. Shifts as well as my 11sp Ultegra compact. Shimano CX-70 front derailleur works great for Shimano 11sp and has a sized-down cage for smaller sub-compact rings with no long arm to interfere with large tires.

[raisinberry777]

Supposedly Chorus 12 speed will be available early-mid May, according to someone over on the Weight Weenies forum.

[Mzilliox]

Originally Posted by raisinberry777

Supposedly Chorus 12 speed will be available early-mid May, according to someone over on the Weight Weenies forum.

half way through the season? weirdos

i want

[Joxster]

Originally Posted by Mzilliox

half way through the season? weirdos

i want

Still under embargo, but the RRP is close to Ultegra RRP from what someone on the internet told another 14yr old