New V20 build components

TransAm

TransAm

Well-Known Member
Ready to pull the trigger on a V20. I've been doing Bike Sebring 24h on a TT bike with a disc, but a pinched nerve in my neck makes that doubtful this year. So it looks like I need to get 'bent.

Trying to figure out how to fit it out. I was considering 1x, but the power loss from the smaller chainring with more cross-chaining could really add up over 24h. So I think I should stick with 2x.

SRAM eTap looks nice to clean up the cabling. But they went to 12 speed, which just gives me a useless 10t cog. So I'm thinking about getting a NOS Force 22 eTap setup.

Then there's the brakes. Robert advised against a disc brake in back, presumably to keep from locking up the rear wheel. For the front, disc is an option. But a center-pull brake with a steerer cable hanger would also clean up another cable sheath. I have not seen this done on a CB, so has anyone "pulled" this off?

Brakes obviously drive the wheel choice. I have a spare set of thru axle disc brake wheels for my road bike, but I would need to get quick release adapters for these. That would be a plus if I could swap wheels. I like the Roval wheels with 24h, 2:1 lacing because that has solved my broken non-drive push spoke woes.

And if I want to put a disc wheel in the back, what are the options? My TT rear disc obviously won't fit. Would a 3x wheel with a disc cover give a better ride?

So my basic Q to the V20 riders is, if you were setting up a new V20, what would you do differently or not?
 
DocS

DocS

Guru
I'm still a fairly new Vendetta rider (about 6 months or so now), but not new to Cruzbike.
I had an Silvio 2.0 before with a Force 2x10 groupset rim brakes / wheels. I just moved everything over to the Vendetta frameset. I've since changed the cassette from 11x42T (we have hills in the Texas Hill Country) to 11x32T and bought some 60mm Carbon wheels.
Since we do have a lot of hills around here, I would probably have gone to disk brakes (but that's just my preference).

Hope you pull the trigger on the Vendetta and join the club!

Blessings,
Rudy (AKA DocS)
 
TransAm

TransAm

Well-Known Member
DocS said:
I'm still a fairly new Vendetta rider (about 6 months or so now), but not new to Cruzbike.
I had an Silvio 2.0 before with a Force 2x10 groupset rim brakes / wheels. I just moved everything over to the Vendetta frameset. I've since changed the cassette from 11x42T (we have hills in the Texas Hill Country) to 11x32T and bought some 60mm Carbon wheels.
Since we do have a lot of hills around here, I would probably have gone to disk brakes (but that's just my preference).

Hope you pull the trigger on the Vendetta and join the club!

Blessings,
Rudy (AKA DocS)
Click to expand...

I think you meant you went from 11x24t to 11x32t? Do you ever need the 11t cog? I don't see any use for a 10t cog, that's why I think 12 speed is not useful (frankly I was considering kit-bashing a 14-25 with a 11-34 to get a 14-34). I don't want to increase chainline loss by reducing chainring sizes. That might make sense for weight weenies on a featherlight carbon bike, but not for ultra.

I'm thinking I should go disc brake because I'm a big boy, and plan to also do bikepacking on the V20. Or possibly just a disc up front.
 
DocS

DocS

Guru
Nope, you read it correct... I had a huge cassette on there for some pretty steep hills. It was over-kill, because I never needed to get into that big rear cassette ring... I've been considering changing my cassette again and just go smaller, because I typically stay in the big ring up front (except for steeper hills) and could use a smaller (10t or even 9t) cog in the cassette...

My S40 has an 1x11 speed. The cassette is 9x46T! I just got it and have had to change cables and make adjustments, so am getting used to it...

I'm not a little guy, so coming down some of these hills means I'm doing 50+ MPH!!! This is why I would probably have opted for disk brakes were I to start over...

Blessings,
Rudy
 
Mathew Fy

Mathew Fy

GRU
TransAm said:
SRAM eTap looks nice to clean up the cabling. But they went to 12 speed
Click to expand...
It looks like Sram still makes the 11 speed eTap rear derailleur. I'm seeing prices around $590 for medium cage ones. That's what I just did.
My set-up is: 11-36 cassette and 36,52 chainrings, giving a range of 26.9 - 127 gear-inches

As for the brakes, if rim brakes have been serving you well, then I think there's no need to switch. The V20 only adds 10 lbs over an upright. On the other hand, I really enjoy my hydraulics. I've done some rainy, mountainous descents with confidence, like this one. Never had an issue with too much braking on the rear. (Disagreeing with Robert on this one.)
 
C

cpml123

Zen MBB Master
TransAm said:
(frankly I was considering kit-bashing a 14-25 with a 11-34 to get a 14-34)
Click to expand...
I have a S40 and did what you said. I combined 2 cassettes to make a 15-40. I ended up not liking it because I figured out the correct riding style for Cruzbike, which is to speed down hill and on flat to pass the DF riders. I went back to my previous 11x40 setup. I have 52/34 front rings.
 
3bs

3bs

whereabouts unknown
i run a force 22 groupset medium cage and yaw but i have it set up as a 2x10 with a rival brifter. i have run 3x9 and 2x11, and 2x10 just runs better
wickerks rings up front 53/34
sram 10 speed cassette 11/36
i use the 11 speed chain.
i run rim brakes with Reynolds assaults and a HED disc sometimes. 700c 28 schwalbe ones most of the time, but sometimes g one speeds in 30
several guys have set up similar.
it works, its fast on flats and it climbs.

if i were starting over, i would get deeper rims. That’s about it
 
TransAm

TransAm

Well-Known Member
cpml123 said:
I have a S40 and did what you said. I combined 2 cassettes to make a 15-40. I ended up not liking it because I figured out the correct riding style for Cruzbike, which is to speed down hill and on flat to pass the DF riders. I went back to my previous 11x40 setup. I have 52/34 front rings.
Click to expand...

Yes, but for 24h TT solo, non-drafting, you want single tooth steps between all the cogs you need to use, and nothing smaller than you need. So I never need 10-12t cogs because I'm not that fast.
 
TransAm

TransAm

Well-Known Member
Mathew Fy said:
It looks like Sram still makes the 11 speed eTap rear derailleur. I'm seeing prices around $590 for medium cage ones. That's what I just did.
My set-up is: 11-36 cassette and 36,52 chainrings, giving a range of 26.9 - 127 gear-inches

As for the brakes, if rim brakes have been serving you well, then I think there's no need to switch. The V20 only adds 10 lbs over an upright. On the other hand, I really enjoy my hydraulics. I've done some rainy, mountainous descents with confidence, like this one. Never had an issue with too much braking on the rear. (Disagreeing with Robert on this one.)
Click to expand...

That Red derraileur says it only goes 11-32 (and at $590, ouch!). Not sure I would want to push that to 11-36, but 14-34 should be OK. I don't see any NOS Force 22 eTap available, though. I do see the SRAM Force eTap AXS 2x D1 Road Groupset 12 Speed - Mechanical Brake for <$1000.

As for the brakes, I did the Trans Am Bike Race both ways. First time with rim brakes and then switched to disc for the second pass. I definitely appreciated the disc brakes descending on a loaded Specialized Roubaix from Hoosier pass into Breckenridge CO. I had a scary descent into Ennis MT in the rain the first time. But I went with mechanical brakes because carrying a spare cable was easy, and I didn't want to be stuck in the Rockies with one brake if I had a hydraulic problem.
 
TransAm

TransAm

Well-Known Member
3bs said:
i run a force 22 groupset medium cage and yaw but i have it set up as a 2x10 with a rival brifter. i have run 3x9 and 2x11, and 2x10 just runs better
wickerks rings up front 53/34
sram 10 speed cassette 11/36
i use the 11 speed chain.
i run rim brakes with Reynolds assaults and a HED disc sometimes. 700c 28 schwalbe ones most of the time, but sometimes g one speeds in 30
several guys have set up similar.
it works, its fast on flats and it climbs.

if i were starting over, i would get deeper rims. That’s about it
Click to expand...

I assume Force 22 cable shift?

What front derailleur do you use with the 53/34?
 
3bs

3bs

whereabouts unknown
yes cable. Not a battery guy. So force brifter for front mech, rival 10 for rear
Front mech Force 22 yaw derailleur
 
chicorider

chicorider

Zen MBB Master
I am six years in on the V20 now. Run Shimano Dura Ace 9000, 36-50 up front and 11-28 in the rear, with rim brakes, and I climb a lot. This bike is so fast that I spin out the 50X11 often, even on the flats with a tail wind. I look forward to eventually going 50x10, maybe even 52x10 12 speed. A 1x system on the V20 is not enough yet. Maybe when shift systems go 13 speed we can start to go there. I run carbon rims, but don't ride in the rain. So far, rims brakes have been fine. The couple of times I have been caught in the rain, the brakes have been sketchy. The ideal setup for light weight, but all weather set up would be a rim brake up front and a disc brake in the rear.
 
E

ed72

Zen MBB Master
Doug......try a 52/36 with 11-32 SRAM 1190 cassette......11, 12, 13, 14, 15, 17, 19, 22, 25, 28, 32 for hills and 11-28 in most other conditions, 11, 12, 13, 14, 15, 16. 17, 19, 22, 25, 28. I run 56/39 and often am spun out.

When you say you don't need 11 or 12, you don't realize how fast the V20 is on flats or false flats. Trust me. You will need them on the first 12 hours at Sebring, but certainly not into the night on the track.

If there was a really fast, durable, tubeless 650B tire, I would suggest that with disc brakes to endure Transam pavement hell south of I80 in Wyoming.

Fast rear wheel options would be like Zipp 808, make a cover, or M5 2 spoke. All front discs that fit your rear on the V20 were tubular to my knowledge.

Look carefully at Larry's setups. If you get your CdA anywhere close to his (unlikely....LOL), you will be doing over 25 mph on 190-200 watts on flats and over 30 mph on the slightest false flat
 
E

ed72

Zen MBB Master
A gearing option to consider and to determine whether it would work. I considered it but didn't go that route because individual parts were not available at the time.

Rotor 12 speed cassette 11-36 with SRAM AXS 12 speed for rear derailleur. Zinn would be the person who would know if the spacing is correct on the cassettes, I suspect it is fine. Search Velonews. I thought one benefit is you can use non-xdr cassette driver wheels, one tooth jumps, more efficient chainline, and larger chainring/cog combinations is also more efficient by a couple watts. The AXS RD is rated to 33 teeth. My 11S etap RD is rated to 28 teeth, lots of people run a 32 cog. Some velomobile racers run a Rotor cassette because the custom rear wheel axle and driver cannot handle XDR body and they need wide range, typically running 61/36 and 11-36. There is a way to kludge a 10T in there. But the FD is mechanical and takes some fiddling
 
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