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1x11 11-42

Posted: Fri Dec 11, 2015 8:45 pm
by koshari
With shimano looking to bring out a 11to42 rear cassette has anyone considered running a 1x11 setup? And if so would a 50 ring un the front be the obvious choice? Would the 42 off the 50 chainrings gear inches be in the ballpark of say a 25 off a 42?

I would imagine one would need a long cage derailleur as well?

Re: 1x11 11-42

Posted: Fri Dec 11, 2015 9:01 pm
by RonK
11-42 is MTB gearing and would typically be matched with a 38t or smaller chain ring.

Re: 1x11 11-42

Posted: Fri Dec 11, 2015 9:06 pm
by koshari
Ok. So lets meet half way. Would 42 be a practical choice for say a CX?

Re: 1x11 11-42

Posted: Fri Dec 11, 2015 9:50 pm
by softy
I have set my cervelo S5 up as a 1 x 10. 39t up front and 11-28 out back. Works absolutely fine, simple shifting as well.

It won't get up really big hills and spins out around 45km, but for the city of Perth, works fantastic!

put your 39t on the big ring position and whack your 11-42 on the back, makes a simple fun bike!

:)

Re: 1x11 11-42

Posted: Sat Dec 12, 2015 7:30 am
by koshari
What did you do with the front shifter softy, do you just have the gear mech orphaned or did you replace it with i standard brake lever?

Have tou got a cgain guide on the front as well?

Re: 1x11 11-42

Posted: Sat Dec 12, 2015 10:34 am
by softy
koshari wrote:What did you do with the front shifter softy, do you just have the gear mech orphaned or did you replace it with i standard brake lever?

Have tou got a cgain guide on the front as well?


i set the bike up with base aero bars, sram aero brakes "like this below" but mechanical and with a sram double tap thumbie to change the rear derailleur.

I removed the front derailleur and cable, bike is very light, just over 6kg, with pedals, bottle cage, etc. With a STI you will just remove the front derailleur, cable tie the cable to the frame, to try. Then you can always put it back.

no chain guard, i am using a rotor q ring, if you hammer through the gears quickly the chain sometimes jumps off, but really it is fine if changing normally.

http://www.tririg.com/articles.php?id=2 ... iew&page=2

:)

Re: 1x11 11-42

Posted: Sat Dec 12, 2015 10:40 am
by KGB
RonK wrote:11-42 is MTB gearing and would typically be matched with a 38t or smaller chain ring.

For offroad...

Re: 1x11 11-42

Posted: Sat Dec 12, 2015 10:42 am
by KGB
koshari wrote:Ok. So lets meet half way. Would 42 be a practical choice for say a CX?

You want a 42x42 gear on a cx bike? I run a single ring, 40t up front with a 12-29 cassette (10speed) and find it quite good. I use the lowest gear but don't really need any lower than that.

Re: 1x11 11-42

Posted: Sat Dec 12, 2015 10:52 am
by softy
Hey,

i say try it!

i ride at a pretty high cadence in general 90 to 100, you find you need easy gears doing this. If powering don't let your cadence drop below 80.

If 42 works for you, go for it! Try it, you can always go back to 36, 34, 32. I am running a 34t front, 25t rear on a roadie and get into the 25t often on not such steep hills, my cadence is over 100, and that is in Perth where it is flat!

I don't cx, but i would imagine a 32t rear, 36t front, would be the smallest cassette you would want on, bigger dish plate preferred.

look up some charts for different gearing, heaps on the net. If you go 42 front, you want at least a 34t front, 32rear equivelent. Bigger preferably! So 42 rear may fit the bill.

Re: 1x11 11-42

Posted: Sat Dec 12, 2015 7:15 pm
by danny the boy
No thanks.

Really dont understand this 1x craze. I need my bikes to be able to be ridden wherever I choose to take them, this just seems like a waste of time. If you are riding 100% singletrack or similar kind of terrain then go for it but for a road bike this is just stupid.

Re: 1x11 11-42

Posted: Sat Dec 12, 2015 10:33 pm
by softy
danny the boy wrote:No thanks.

Really dont understand this 1x craze. I need my bikes to be able to be ridden wherever I choose to take them, this just seems like a waste of time. If you are riding 100% singletrack or similar kind of terrain then go for it but for a road bike this is just stupid.


of course you are entitled to your opinion, ride the bike you want too.

But also give the choice to others, remember bikes once only had a 5 speed rear cassette with twin rings up front giving only 10 speeds.

Manufacturers like sram are spending a lot of time developing single front ring bikes,

So many riders say they only use one ring of their double front rings, so what is the difference? I see so many people cross chaining, instead of flicking over the front ring. So obviously a number of riders like the simplicity of only using one front ring.

Re: 1x11 11-42

Posted: Sat Dec 12, 2015 10:36 pm
by queequeg
I have no idea if they are still doing it, but Specialized did a 1x11 Aero "Lunch Time Racer" bike for 2015

https://fultonbikes.wordpress.com/2015/ ... te-or-die/

Re: 1x11 11-42

Posted: Sun Dec 13, 2015 9:48 am
by Usernoname
I test rode a Specialized diverge with Sram X1: It felt like a really good setup compared to Ultegra 11sp double (rim brakes), as far as braking (discs and gear changes). Not sure how the gear spread would go on the road.
REAR DERAILLEUR
SRAM Force 1, 11-speed
SHIFT LEVERS
SRAM Force, 11-speed, disc
CASSETTE
SRAM XG-1150, 11-speed, 10-42t
CHAIN
SRAM PC-1170, 11-speed
CRANKSET
SRAM Force 1, 46T

Re: 1x11 11-42

Posted: Sun Dec 13, 2015 12:21 pm
by koshari
ok, so given iam running a 50/35 compact and a 11 to 26 cassette with 25mm tires on 700c atm on intended bike, going 1x10 with just the 50 ring on the front and a 11-42 at the back gives me a gear inch range of 120-31.5.
where as the current setup gives 12.-35.7. So increased range. obviously giving up some smaller range differences, but not losing any top speed, in fact if i went up to a 52 on the front i would have 125-32.8!
this is really starting to sell itself.

Re: 1x11 11-42

Posted: Sun Dec 13, 2015 12:41 pm
by Uncle Just
This recent article on CT may help..http://cyclingtips.com.au/2015/11/will- ... -srams-1x/

Re: 1x11 11-42

Posted: Sun Dec 13, 2015 1:43 pm
by softy
koshari wrote:ok, so given iam running a 50/35 compact and a 11 to 26 cassette with 25mm tires on 700c atm on intended bike, going 1x10 with just the 50 ring on the front and a 11-42 at the back gives me a gear inch range of 120-31.5.
where as the current setup gives 12.-35.7. So increased range. obviously giving up some smaller range differences, but not losing any top speed, in fact if i went up to a 52 on the front i would have 125-32.8!
this is really starting to sell itself.



Just a suggestion, i would go smaller than 50t, 50t-11t is a faster gear than 53t-12. Maybe 46, or 44, this will give you a top speed with the 11t around 45km to 50km. If you can push more than this on the flat you must be mighty fit!

Doing this gives you better climbing gears, and you can also drop the biggest cog on the cassette to make your increments between gears closer, so you don't get such a big jump in cadence when the gradient changes trying to hold your prefered cadence. Steps in gears are also a consideration.

Re: 1x11 11-42

Posted: Mon Dec 14, 2015 8:48 am
by koshari
Uncle Just wrote:This recent article on CT may help..http://cyclingtips.com.au/2015/11/will- ... -srams-1x/


Really good read, thanks for that link UJ.

Re: 1x11 11-42

Posted: Mon Dec 14, 2015 9:42 am
by bychosis
I like the simplicity of the 1x9 setup I have on my MTB. I have lost a ouple of the gears at the top and bottom but can live with that off road. I do find the gear steps a bit big on long flattish open sections though. 1x11 with the same range would help with that no doubt.

Would probably quite happily change to 1x11 on the road, but be wary of increase gear steps. Cadence is more relevant for road type riding and not having the correct gear is more inconvenient than it is off road where the terrain changes more frequently.

Re: 1x11 11-42

Posted: Tue Dec 15, 2015 7:31 pm
by Xplora
Seems like a good idea, but its expensive for what it is, and won't make life "Easier". Get a cheap 10 speed Di2 setup if you want ease and simplicity.

Re: 1x11 11-42

Posted: Tue Dec 15, 2015 7:46 pm
by Derny Driver
koshari wrote:With shimano looking to bring out a 11to42 rear cassette has anyone considered running a 1x11 setup? And if so would a 50 ring un the front be the obvious choice?


50-42 is 31 gear inches ...cant see why you would need / want a smaller gear than that for general purpose riding. Thats about the same as 39-33.
Im guessing this 'new' cassette has 3 teeth jumps right across the board? 11-14-17-20-23-26-29-32-35-38-42
Pretty nasty looking thing if you ask me.
Its like that saying they have in ethics classes, "Just because a thing CAN be done, doesn't necessarily mean it SHOULD be done"

Re: 1x11 11-42

Posted: Tue Dec 15, 2015 9:16 pm
by koshari
so dont buy it then. just becase it doesnt suit you doesnt mean its not for everyone. and whos to say in time other ratios wont be available?
i currently ride 2x8 and 3x8 setups, iam aware there are other drivetrains available. but i generally leave them for others that choose to use them. doesnt mean in time i wont choose to try them to.

Re: 1x11 11-42

Posted: Wed Dec 16, 2015 5:18 pm
by ironhanglider
Derny Driver wrote:
koshari wrote:With shimano looking to bring out a 11to42 rear cassette has anyone considered running a 1x11 setup? And if so would a 50 ring un the front be the obvious choice?


50-42 is 31 gear inches ...cant see why you would need / want a smaller gear than that for general purpose riding. Thats about the same as 39-33.
Im guessing this 'new' cassette has 3 teeth jumps right across the board? 11-14-17-20-23-26-29-32-35-38-42
Pretty nasty looking thing if you ask me.
Its like that saying they have in ethics classes, "Just because a thing CAN be done, doesn't necessarily mean it SHOULD be done"



That's not like you DD.

Just about every cluster/cassette ever made with a wider range than a corncob has evened out the gaps between gear ratios by having smaller jumps between the little cogs and bigger jumps between the bigger cogs. In this case it is more likely to be 11-12-13-15-17-19-21-25-30-36-42T

Doing away with front deraillers would be useful for applications where front shifting is problematic, like tandems and recumbents and anything ridden by Andy Schleck.

As a tandemist I find the idea of building a bike with standard road cranks and a right-side drive sync chain to be very appealing. (Tandem specific cranks are relatively rare and therefore expensive)

Cheers,

Cameron

Re: 1x11 11-42

Posted: Wed Dec 16, 2015 7:17 pm
by RonK
Derny Driver wrote:Im guessing this 'new' cassette has 3 teeth jumps right across the board? 11-14-17-20-23-26-29-32-35-38-42


ironhanglider wrote:Just about every cluster/cassette ever made with a wider range than a corncob has evened out the gaps between gear ratios by having smaller jumps between the little cogs and bigger jumps between the bigger cogs. In this case it is more likely to be 11-12-13-15-17-19-21-25-30-36-42T


Nope, no one-tooth steps in either Shimano or SRAM.

Shimano XT M8000: 11-13-15-17-19-21-24-28-32-37-42

SRAM XG-1150: 10-12-14-16-18-21-24-28-32-36-42

Re: 1x11 11-42

Posted: Wed Dec 16, 2015 10:25 pm
by Duck!
koshari wrote:With shimano looking to bring out a 11to42 rear cassette has anyone considered running a 1x11 setup? And if so would a 50 ring un the front be the obvious choice? Would the 42 off the 50 chainrings gear inches be in the ballpark of say a 25 off a 42?

I would imagine one would need a long cage derailleur as well?

No, a very long body. You need a very specific derailleur to cope with such a massive sprocket, and no road derailleur, even long cage will come near it. The only available system that works is SRAM's CX1 (available on Force and possibly Rival groups); Shimano and SRAM's MTB 11-sp. derailleurs use a different leverage ratio to the road gear, so don't play with road shifters, but CX1 has the leverage ratio to play with SRAM 10 & 11-sp. road shifters and the body geometry to handle dinner plate sprockets (so you can use a 10-sp. cassette with bigger than the 32T maximum of standard WiFli derailleurs).

As others have pointed out, the trade-off from ditching the second ring & covering all the gear range in the cassette is that you lose the smooth progression between gear ratios; it's reasonably probable that you'd find you need gears that aren't there a fair bit of the time because the gaps are so much wider.

Re: 1x11 11-42

Posted: Wed Dec 16, 2015 11:25 pm
by ironhanglider
RonK wrote:
Derny Driver wrote:Im guessing this 'new' cassette has 3 teeth jumps right across the board? 11-14-17-20-23-26-29-32-35-38-42


ironhanglider wrote:Just about every cluster/cassette ever made with a wider range than a corncob has evened out the gaps between gear ratios by having smaller jumps between the little cogs and bigger jumps between the bigger cogs. In this case it is more likely to be 11-12-13-15-17-19-21-25-30-36-42T


Nope, no one-tooth steps in either Shimano or SRAM.

Shimano XT M8000: 11-13-15-17-19-21-24-28-32-37-42

SRAM XG-1150: 10-12-14-16-18-21-24-28-32-36-42


OK

How about IRD?
:D

I used two-tooth jump clusters (5 spd) when I was a junior with a half-step pair of chainrings (42-44?) It was a good combination which put the front change right in between a rear change. It was really easy to know where the next gear was going to be.

Cheers,

Cameron