Sram Upgrade?

Peter Verdesi

I was toying with the idea of getting a whole Sram Red group for my Cervelo P3C and was wondering if Shimano bar end shifters will work with the Sram. It would save me the trouble of buying the Sram bar ends which are a couple hundred bucks.

Peter@vecchios

shimano shifters and Sram rear derailleurs are not compatible. Front derailleur doesn't care since it's friction but you are going to need to match the shifters to the rear derailleur, manufacturer-wise.

Peter Verdesi

Darn!!!

alfeng

If you're going to use bar-ends, then why are you bothering to consider putting SRAM's Red components on your bike?

That is, if you aren't putting the double-tap shifters on your bike, what's the point OTHER than cosmetics AND/OR conspicuous consumption?

Peter Verdesi

I suppose that's a valid question. I really like the 11/26 gearing that Sram put out. I live in a hilly area and like the 26 for climbing the really steep stuff but I like the 11 for the down hill. I wish Shimano would come out with similar gearing (I've seen some custom stuff out there but I lack the technical expertise to put an 11/25 Shimano cassette together). That being said I bought a whole red group for about 1350 bucks and I'm going to resell the double taps cause I don't need them. Plus I get some serious bling points for having the Red stuff. I'll post a picture when I'm done doing the build in a couple of days.

oldbobcat

$1350 is a lot to pay for one extra freewheel tooth.

Peter@vecchios

shimano makes a 11-25/10s cogset-...

alfeng

OR, couldn't the Shimano 12-27 10-speed cassette be restacked without the 16t (for example) but with new 11t & 12t cogs?

OR, is Shimano already supplying an 11-27 10-speed combination?!?

Solanog

I have an old 12-23 eight speed and substituted the 12 with a 11. So maybe the 12-27 could be converted to 11-27.

Camilo

I still don't understand. SRAM makes inexpensive, but good 11-26 cassettes in 9 and 10 speed. Why do you need an entire expensive group if all you want is the $40 cassette?

Peter Verdesi

Without getting into to much detail the short version of why I'm buying all this expensive stuff is I'm coming back from an injury which, I thought, was going to end my biking, running career. I just turned 40, doing pretty well financially and figured why not build the bike of my dreams. I'm all too aware of the fact that it's not typically the bike that wins but the engine on the bike. I think I'll always get beat by someone on a lesser bike. I train a bunch, I have a wife that puts up with my only vice (bike stuff) and I like the Sram Red Group. Here are the specs of the bike I'm putting together:

Cervelo P3carbon
Zipp 1080 rear 808 front
Full Sram Red group
Profile CarbonX aero bars
Dura Ace Pedals

I'm doing the Lake Placid Ironman in July so this will be the machine I'll have my butt on for the better part of five hours. I better like it.

sideshow_bob

If you want to use SRAM, don't be swayed by people questioning the decision. Red is a nice groupset, is the weight saving going to be useful on a TT bike? Probably not but it's your bike, do what you want.

You've got 3 options.

1) If it's solely for the 11-26, use Dura Ace and put a SRAM 1070 11-26 cassette on there. Works fine, I ran one of these on some climbing wheels for a season using Ultegra, no problem at all. I later relegated the Ultegra to a box waiting for a TT build that I'll get around to at some point and rebuilt the road frame using Force anyway.

2) Go Red, sell the STI's and buy some SRAM bar end shifters. So you end up with a full SRAM build.

3) Use a Shimano to SRAM J-Tek shiftmate and run DA bar ends and an otherwise full Red group.

Any of those options will do just fine on the build you are looking at.

--brett

alfeng

FWIW. You actually have a FOURTH OPTION:

Last season, the Tour bikes with SRAM sponsorship used Campagnolo 10-speed bar-end shifters (if you can't readily get the SRAM bar end shifters) ...

Recently, Leonard Zinn echoed/confirmed this index match by mating 10-speed Campagnolo Ergo shifters with his otherwise SRAM drivetrain.

Peter Verdesi

Well I got the Sram Red group in the mail and am in the process of putting the bike together. I'm still waiting on the bar end shifters so I can't run any cables yet. Just a quick question with regard to cables (if anyone knows); if you are removing cables which are pretty new how do you prevent the cable from fraying so you can reuse them. I've found that when I cut the crimp off of the cables I, invariably, get one stray strand that prevents me from feeding the cable back through the housing. I guess the obvious answer would be if it ain't broke don't fix it. I guess I'm a glutton for punishment.