FlashBazbo

Woo hoo! No frame yet -- but a box packed full of components arrived on my doorstep!

The rear derailleur is not the exact specification that I ordered, but it might be what I need. Six pieces are missing, including the frame (everything that's made of carbon fiber). But, hey . . . we've got something to stare at while we wait for the frame! All the shiny pieces are here!

Anyone else receive their group buy components?

CrimsonKarter21

I didn't order, but I know exactly what you mean by having a groupset to stare at but nothing to put it on yet. I just got a full Dura-Ace Track group and I'm not done with my frame yet!

0_o

I should be getting my parts package from PF tomorrow. I am just hoping DHL actually buzzes the door bell this time around.
I snagged a wheelset , bar , tape , stem and i think a couple of other pieces from them.
I had a spare Campy rear derailleur and cassette. So I'm just gonna swap out some of my Record stuff from my Steelman's over the the ZX3 frame and make a slight 2008 campy upgrade on the steelmans ... oh boy the wife's gonna love me ,
did you order a SRAM , Camp , or Shimano rear derailleur?

FlashBazbo

Shimano Dura Ace. I received a short model -- perfect for the stuff I ordered, but probably not enough capacity if I switch cranks to my R700 for the mountains.

briscoelab

It will be fine. A Shimano short cage can handle up to a 30T cog. If you're running a 34 - 30..... it's time to get off and start walking

FlashBazbo

The size of the cog is not the issue. Rear derailleurs have a capacity rating based on the differential between number of teeth on the largest and smallest chainrings, plus the differential between the number of teeth on the largest and smallest cogs. It's not purely a clearance issue. It's a functional issue of whether the derailleur can maintain correct tension when going from big ring/big cog to little ring/little cog. With the SS derailleur, a traditional crank's 13T or 14T chainring differential is not a problem -- but a 16T differential (compact crank) very well might be. According to Shimano's materials, the SS derailleur can only handle a 14T differential between chainrings. Hence, the question.

(And I love it when Iowa flatlanders make snide comments about walking up climbs.)

bo00on

bummer! you beat me to this post. my wheelset and the various components (minus the crankset and chain) arrived yesterday but i wasn't home so i picked it up from the post office today. now comes the two month wait for the balance of the parts and the frame. pedal force sure knows how to tease their customers.

boon

14max

Doc - Don't worry about it. I've run an R700 with Ultegra short cage (which has the same Min/Max sprocket difference and total capacity as the DA) without any issues at all. If anything, you're going to be better off with the DA because the rear derailleur allows for a 16T max front difference (https://bike.shimano.com/catalog/cycl...=1185968461684) opposed to the 14T in the Ultegra.

FlashBazbo

Hey, thanks for the input! What cassette do you use?

Incidentally, both Pedal Force and Performance Bike tech support agree with you. They both say I can use any standard Shimano cassette with the compact crank and the SS derailleur. Only Shimano's description of the derailleur itself disagrees (29T total). Even for the crank, the page you linked shows two different maximum capacities -- 14T at the top and 16T below that.

c4s6

I got my wheels, BB cups, and crankset.

14max

On my Litespeed I ran the R700 with Ultegra f/r derailleurs and a 12/27 cassette. It worked flawlessly...

FlashBazbo

That's EXACTLY what I need to know. Thanks. That's the gearing I'm guessing I might want to use in the race I'm focusing on next spring.

briscoelab

Hey smart@$$, if you actually had some experience with compact cranks and short cages ders then maybe you could comment on what works and what doesn't. The fact is, a shimano short cage will shift up to a 30T cassette, even with a compact crank. It actually does have to do way more with clearance than total cog differences. This is why you can also use a Campy short cage and a 13-29 cassette, even with a compact, if you set the chain length correctly.

And I wouldn't be so quick to bash someone for living in Iowa and claiming there is no way I could have expeience with tough climbs. When was the last time you did the Mortirolo, Stelvio, or the Gavia? Or Mt. Evans? Believe me, I didn't need a freaking 34 - 30 for those climbs. But then again, I actually *ride* my bike rather than read shimano product info and spout BS on the internet. Take some time to read posts from more informed people, and you might actually learn something. Oh and it wasn't a snide comment.... it was a JOKE.

FlashBazbo

I apologize. I defer to your obvious expertise and experience! Where did you buy your 30T rear cog for your Dura Ace? In my ignorance, having never actually ridden a bicycle before, I didn't know Shimano offered such a thing.

briscoelab

MCM makes any combination of custom cogs out of Ti. (Vaiours outher places do similar cassettes) I've setup a standard double with a 30T large sprocket and a compact with a 28 on DA short cage ders for people with no problems. 32T cogs are too much for it to take though. (IRD makes wide range 10 speed cassettes) But an XTR der will shift a 10 speed cassette ust fine if you really need to go lower. (Most people do this if they are running a standard crank to get some really low gears, but it would work on a compact as well.)