SRAM 2019?

[2lo8]

This debate about the usefulness of an 11t has been around since 9s days I think. But...

Well, at 50x11 110rpm you are at some 60kph (not looking at calc now) and any decent cyclist can sprint above 130rpm (thats close to 70kph on 50x11), so really, if you need taller gearing you must be a pro. Going downhill and you will be faster tucking.

Last year my top gear was 50x12 and I never got dropped because of it! Only because of not being fit, and that was on climbs... I usually was one of the fastest descenders, tucked, and I'm light.

Do you realise 50x10 equals 55x11 and 60x12? Thats HUGE. It's pointless even for many pros most of the time.

Merckx rode 52x13 as his top gear, and he would beat the shit out of everyone in this thread on his 9.5kg steel bike on box section rims 32 spokes. Does anyone here needs taller gears than Merckx had? Come on.

10t is total BS for road (not to mention those 9-32 cassettes).

I will keep choosing cassettes starting on 12t for 11s and wont get 12s groupsets while I can't get 12-something. 52x12 is an excelent top gear for me, and 30x29 (or 25, or 32) is an excelent bottom gear for wall-climbing.

Triples will rule the earth again, Jesus said.

11t were uncommon on 9sp road cassettes, only found on time trial corncobs and MTB. Compact wasn't even really a thing until 10sp had been out for a while. Pro cyclists in the Merckx era would run extra large chainrings when they felt like having higher gears. You can still find NOS 56t Campy NR rings around.

You were right about triples though.

[Monkeyfudger]

Haha, you had me until Jesus, everyone knows Jesus is a hipster fixie bitch.

52/36-25/12 on the race bike but I could be tempted by a 1x12 with a 10t cog on a non-race bike, could look really clean seeing as the cassette wouldn’t be some huge MTB type job.

[2lo8]

Haha, you had me until Jesus, everyone knows Jesus is a hipster fixie bitch.

Spotted the Unitarian. One crank with three chainrings is the truth.

[RocketRacing]

Low gearing doesn’t slow down fast riders. High gearing will destroy a weak rider on a climb.

What type of rider are you?

If you are fast, Your fitness is the difference maker anyway. Wide range will be pointless. If you are using your easiest gear... you have lost. For gearing, Just try to be close based on the terrain.

If your fitness needs work, choose smaller in the front, big in the back.

12 speed has never been about the pros. They just need gearing for fast and faster. 12 speed and wide range is about the rest of us; the guy that just wants to get to the top, the guy who doesnt have a mechanic to swap gearsets between stages, the guy who is in no rush.

[TobinHatesYou]

Sort of, but not really? The 11spd 11-28t is basically standard in the pros now as long as the stage isn’t pan flat. There are certainly stages where Ultegra 11-32t cassettes are used. Both these cassettes force you to make one or two bigger jumps than you’d like in the heavily used middle range. For example the 11-28t has that dreaded 15-17 jump. The 11-32t has an even worse 14-16-18 jump.

The 12spd 10-28t coupled with smaller chainrings is roughly equivalent to bringing back that 16t cog...It’s not make or break, but it will be very much appreciated since these are the big-ring “cruising” gears.

[jhalmar]

^ Luckily SRAM 11-28 11-speed includes 16 sprocket:
11,12,13,14,15,16,17,19,22,25,28.

[TobinHatesYou]

^ Luckily SRAM 11-28 11-speed includes 16 sprocket:
11,12,13,14,15,16,17,19,22,25,28.

19-22-25-28 vs 19-21-23-25-28. There’s no free lunch aside from adding another cog. Nitpicking, sure, but I’m not going to turn down 12spd or call it stupid. Hell, I’d be willing to suffer through some bigger jumps just to have 1x14.

[ome rodriguez]

From the video of sram explaining the xdr freehub body, the example zipp rear wheel is a qr rimbrake. Love it when you still have choices for 12 speed.

https://m.youtube.com/watch?v=fGDwQ4YdT ... ontinue=80

[TobinHatesYou]

The XDR freehub body is the same length as an 11spd Shimano HG freehub body and also a MicroSpline body. Freehubs are not axles, so it should not come as a surprise that QR endcap options exist for various hub designs. The endcaps on my Zipp NSWs are pushed on and only held in place by friction from an o-ring and clamping force from QR or TA.

[Karvalo]

The XDR freehub body is the same length as an 11spd Shimano HG freehub body and also a MicroSpline body.

The only MicroSpline so far is a mountain bike standard, which fits in the 10speed HG dimensions, same as an XD body. Presumably if Shimano use MicroSpline for DA 9200 cassettes then they'd use an 11speed HG sized Microspline body.

[ericoschmitt]

I don't think 12 speeds is a problem at all. My problem is having small cogs and big jumps. You can ride 44/28x10-28 or you can have 52/36x12-36. It's basically the same range, but your cogs and chain should last 20% longer at least. And saves a couple watts on the smaller cogs.

Yeah, I know - weight. But I prefer big.

Maybe I'll still ride a bike with rotor 13 speed one day, if they make a cassette starting on 12 or 11, and it has all cogs until 19 (11-28 13s, or 12-32). And then I'll add some bar-end shifter and a triple crankset to that bad boy, you bet.

Guys, take a look at this setup, pure genius: https://www.cyclingweekly.com/news/andy ... bike-29431
56/42/26x9 speed. Clearance for MTB tires and V-brake. Wins TT's. Steel. Pure love.

We need more creativity, not an extra 10t cog.

[imunwired]

Hell, I’d be willing to suffer through some bigger jumps just to have 1x14.

1x14 — I’m in!!

Rotor’s 1x13 on a 10-36 cassette looks pretty close. I actually like the look of their RD cages too.



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[themidge]

Isn't the whole point of 1x13/14/15 etc to have smaller jumps? If you need any more range than is provided by a 50/34 - 11/28 then I suspect closer spacing isn't going to solve the real problem going on .

[LeDuke]

Isn't the whole point of 1x13/14/15 etc to have smaller jumps? If you need any more range than is provided by a 50/34 - 11/28 then I suspect closer spacing isn't going to solve the real problem going on .

I live 2000ft higher than Ben Nevis, the highest point in the UK, and regularly ride at an elevation 3x that of Ben Nevis.

Let us know when you’ve done that, and how your thoughts on gearing have evolved.


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[themidge]

I haven't, its true, and I take your point about altitude. However, most people live rather closer to sea level so you describe a fairly small niche. My issue with Sram's new 12 speed ratios is that they seem to be only catering to that niche (of needing a big range) and leaving everyone else with a somewhat suboptimal setup.