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12 speed for everyo...
 

[Closed] 12 speed for everyone!

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@kayla1 - I think you'd be better off with a 2x system.

10spd seems to be the lowest practical generic setup for 1x. Obviously if you are riding in a specific area or event then you can do 1xX as it were, people ride single speed as the extreme example. Big gaps put a lot of strain on the derailleur when changing gear so as well as the massive change in cadence you've also that to consider.

I don't know what the gear changes at the low end on SRAM Eagle is like where there are big ratio changes but on Shimano XT with either an XT or Sunrace cassette those big jumps are quite significant.


 
Posted : 13/05/2019 10:28 am
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Big gaps put a lot of strain on the derailleur when changing gear so as well as the massive change in cadence you’ve also that to consider.

'massive' is a bit overstating it, don't you think? In any case SRAM and some of the Sunrace cassettes are more evenly spaced so they don't have that jump to the final dinner plate gear that Shimano do.

I have 11 speed 10-42 at the moment and there are so many gears I dont use!

It depends entirely where you are riding surely, most of my local stuff is fine with a 30/42 low gear (27.5) but this weekend I was in the lakes and would have gladly used a 46 or a 50T on the cassette. The cost of going 12spd is prohibitive but I'm going to buy a 26 or 28 for those big climbing days.


 
Posted : 13/05/2019 11:53 am
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It depends entirely where you are riding surely

It does. Some parts of the world, even some specific locations have short steep climbs, some have long steep ones, some only have shallow ones. It's entirely location dependent.


 
Posted : 13/05/2019 12:02 pm
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Can a compnay not create a 8 or 9 speed 10-50, I have 11 speed 10-42 at the moment and there are so many gears I dont use!

I'd like this too, it would be a great way to reduce unsprung weight for better suspension performance. I think gear boxes will be great for this reason too. Large gaps between gears won't be a huge problem for my winch and plummet riding.


 
Posted : 13/05/2019 2:35 pm
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In any case SRAM and some of the Sunrace cassettes are more evenly spaced so they don’t have that jump to the final dinner plate gear that Shimano do.

more even in what way?

the biggest final jumps of all to the dinner plate are SRAM 12sp and sunrace 11+12sp (all 8 teeth jumps to the largest sprocket)

all shimano 11sp 11-42 have less jump than the SRAM equivalent 10/11-42 11sp

shimano xtr 12sp is 6t for each of the final few jumps

only the 7tooth jump on the shimano 11-46 is what I would call "bigger than I'd like" to that dinner plate gear, which I why I have the 42t version (but fancy a bit more range), but is less than sram 12 and sunrace 11/12

either that of the specs on the online store I usually use are totally wrong.


 
Posted : 13/05/2019 3:37 pm
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only the 7tooth jump on the shimano 11-46

It's 9 isn't it? 37 to 46?


 
Posted : 13/05/2019 3:42 pm
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Re. the 11 speed ratios:

XT 11 speed: 11-13-15-17-19-21-24-28-32-37-46
SR 11 speed: 11-13-15-18-21-24-28-32-36-40-46

I use the Sunrace 46t cassette and the 40-46 gap is fine.

*Sunrace also do 11 speed 50t too: 11-13-15-18-21-24-28-32-36-42-50


 
Posted : 13/05/2019 4:01 pm
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Interesting... Even the 11-50 doesn't have a 9 tooth gap anywhere.

Does the normal XT mech handle 50T ok? I guess it's only 5% more, so it should. There's plenty of adjustment in my b-tension screw.


 
Posted : 13/05/2019 4:06 pm
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Tooth count on the medium 11 speed XT mech. is 39 - so it should be OK. From memory the XTR version has a smaller tooth count so best to stick with XT if anyone's tempted to try it!

Hope do a 10-48 cassette 10-12-14-16-18-21-24-28-33-40-48 which on paper sounds the best of all worlds - but won't run on the Shimano hub and expensive - so not worth it for my 26'er - I just have to spin out and enjoy the scenery occasionally. 🙂


 
Posted : 13/05/2019 4:21 pm
 kcr
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I remember when having 12 gears was exciting the first time round.
Never guessed the bike industry could sell 12 speed as a technical advance again, a few decades later!


 
Posted : 13/05/2019 6:27 pm
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kcr

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I remember when having 12 gears was exciting the first time round.
Never guessed the bike industry could sell 12 speed as a technical advance again, a few decades later!

I felt the same when double ring 9-speed was the in thing. Oooh, 18 gears!


 
Posted : 13/05/2019 6:50 pm
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Also- gaps between rings are proportional not linear- 10-13 would feel massive and 47-50 would feel tiny. Even spacing isn't a benefit in itself


 
Posted : 13/05/2019 6:52 pm
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