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I am thinking of going to 12-36t Shimano CS-HG400 cassette 9 Speed

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I am thinking of going to 12-36t Shimano CS-HG400 cassette 9 Speed

Old 10-18-15, 09:54 AM
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I am thinking of going to 12-36t Shimano CS-HG400 cassette 9 Speed

I am thinking of going to 12-36t Shimano CS-HG400 cassette 9 speed and I need Shimano XR RD M772 max 36t 9 Speed and do I really need 12-36t cassette???

I have Deore Crankset 24-32-42t going to 22t
and my Shimano XT RD M771 2008 max 34t
using Shimano XT FD M771 9 speed
using Sram PG970 11-34t cassette 9 speed
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Old 10-18-15, 06:09 PM
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Have the 12-36 cassette on several bikes. One is a 1x9 commuter- the range and spacing is optimal for my terrain and pedaling style.
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Old 10-19-15, 04:05 AM
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Depends on what kind of riding you plan to do, of course. Touring with a big load ... a 22-36 could make end-of-the-day hills a little easier even compared to a 24-34. Going to 12 from 11 teeth up top makes no difference as you obviously aren't pushing for top speed anyway.

Do you find that you are using your lowest gears a lot and still working too hard?

Whatever you choose, if it doesn't suit you you can always swap back to the old stuff ... keep both, and if you find yourself riding a long flat tour swap in the 111-34 (before you leave of course--I don't mean carry both on the road) and if you are planning a tour of the Alps, definitely go for the lower gearing---is my opinion.
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Old 10-19-15, 04:56 AM
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Originally Posted by Biketouringhobo View Post
I am thinking of going to 12-36t Shimano CS-HG400 cassette 9 speed and I need Shimano XR RD M772 max 36t 9 Speed and do I really need 12-36t cassette???

I have Deore Crankset 24-32-42t going to 22t
and my Shimano XT RD M771 2008 max 34t
using Shimano XT FD M771 9 speed
using Sram PG970 11-34t cassette 9 speed
Going from 24T to 22T will be about a 9% difference and the 34T to 36T about 6.5%. I would try the smaller chain ring first.

Brad
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Old 10-19-15, 12:43 PM
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hi and I am doing 22t 1st 22-32-42t from 24-32-42t 10/9 speed Deore crankset and 11-34t 9 speed cassette
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Old 02-19-16, 12:47 PM
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Originally Posted by Maelochs View Post
Depends on what kind of riding you plan to do, of course. Touring with a big load ... a 22-36 could make end-of-the-day hills a little easier even compared to a 24-34. Going to 12 from 11 teeth up top makes no difference as you obviously aren't pushing for top speed anyway.

Do you find that you are using your lowest gears a lot and still working too hard?

Whatever you choose, if it doesn't suit you you can always swap back to the old stuff ... keep both, and if you find yourself riding a long flat tour swap in the 111-34 (before you leave of course--I don't mean carry both on the road) and if you are planning a tour of the Alps, definitely go for the lower gearing---is my opinion.
thanks
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Old 02-19-16, 01:14 PM
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Originally Posted by Biketouringhobo View Post
I am thinking of going to 12-36t Shimano CS-HG400 cassette 9 speed
Wunderbar.
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Old 02-19-16, 01:49 PM
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Originally Posted by Biketouringhobo View Post
I am thinking of going to 12-36t Shimano CS-HG400 cassette 9 speed and I need Shimano XR RD M772 max 36t 9 Speed and do I really need 12-36t cassette???

I have Deore Crankset 24-32-42t going to 22t
and my Shimano XT RD M771 2008 max 34t
using Shimano XT FD M771 9 speed
using Sram PG970 11-34t cassette 9 speed
Can't you wait and see if the 12-36 works with your current RD before you replace it?
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Old 02-19-16, 01:52 PM
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I say NO.
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Old 02-19-16, 02:11 PM
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Originally Posted by jonc123 View Post
Can't you wait and see if the 12-36 works with your current RD before you replace it?
My XT M771 RD is Max 34t and I would need XT M772 RD is Max 36t and I am Still thinking!
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Old 02-19-16, 02:12 PM
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Hobo,

I don't care what you really need.

Just wanted to share with you that the XT M771 rear der. which you already have works great with cassettes with 36t large cogs. With clearances and range of motion to spare.
I have one mated to such a cassette and am very fond of this combination.
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Old 02-19-16, 08:32 PM
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my xt 9 speed long cage rd works with 12 - 36 just fine. A medium cage xt rd might work, if that is what you have. before you spend $89 on a new rd, try 89 cents for a longer b screw.

22 36 is enough for any hill. The front gets to light and starts to wheel hop before I run out of pedal power. This is on a 29er. If you are on a 26er 22 34 will get you up any hill.

If you buy a new rear derailleur, why not get with the times and 11 speed?


the shimano cassette last about 3 times longer than the sram, (990 vs hg400)

Last edited by chrisx; 02-19-16 at 08:41 PM.
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Old 02-19-16, 08:45 PM
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Originally Posted by Biketouringhobo View Post
My XT M771 RD is Max 34t and I would need XT M772 RD is Max 36t and I am Still thinking!

tech specs are usually conservative. you can often run more teeth
both front and rear than what the manual says.

check with that psychocommute guy....he knows deraillers.
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Old 02-19-16, 10:06 PM
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Originally Posted by chrisx View Post
the shimano cassette last about 3 times longer than the sram, (990 vs hg400)
The 990 is their top of the line cassette designed for MTB racing more than touring and the 400 is certainly not on the same level it is Alivio and much heavier and different metals in parts of it. Lightweight stuff tends not to last as long.

Also don't go 11! The industry is doing the whole Nigel/Spinal Tap thing:
Marty DiBergi: Why don't you just make ten louder and make ten be the top number and make that a little louder?
Nigel Tufnel: [pause] These go to eleven.

There is not a good reason to go to eleven unless you are going to make the rear wider and space things out more. Shoving more and more gears in the same amount of space just isn't going to work so well in making a good wheel and good shifting. You cannot run friction when you are running 11 speed or at least not reliably and if you get yourself into a pickle you might want that option.
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Old 02-20-16, 09:20 AM
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Originally Posted by chrisx View Post

22 36 is enough for any hill. The front gets to light and starts to wheel hop before I run out of pedal power. This is on a 29er. If you are on a 26er 22 34 will get you up any hill.
I would push my bike up a hill! and I have High Blood Pressure! and Heart Problems
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Old 02-20-16, 09:35 AM
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Originally Posted by chrisx View Post
my xt 9 speed long cage rd works with 12 - 36 just fine. A medium cage xt rd might work, if that is what you have. before you spend $89 on a new rd, try 89 cents for a longer b screw.

22 36 is enough for any hill. The front gets to light and starts to wheel hop before I run out of pedal power. This is on a 29er. If you are on a 26er 22 34 will get you up any hill.

If you buy a new rear derailleur, why not get with the times and 11 speed?


the shimano cassette last about 3 times longer than the sram, (990 vs hg400)
26in Surly LHT
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Old 02-21-16, 06:15 AM
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1) technically 11-34 has more range between the lowest and highest gear than 12-36. If you don't need 22 chainring with 36 sprocket combination, you can just as well stay at 11-34. However some people dislike 11t sprocket (me too) for being to small and weak, so a cassette starting at 12 might make sense.

2) shimano specifications for derailleurs are mostly conservative, you can often use significantly larger sprockets than what they specify. using 36 with a derailleur with spec max 34 should be just fine. Using classic old style derailleur (not shadow) should help in this regard as when the classic derailleur goes to a large sprocket, the top guide pulley moves slightly lower (around the point where the derailleur cage rotates). Just don't use too long chain.
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Old 02-21-16, 06:37 AM
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I used a 11-32 on a 9 speed 1x for a tour from Singapore to Northern Thailand and it was fine.

But I also had a 24 on the inner ring as a get out of jail incase of big hills that i never uses but the idea was that i could just push the chain over with my finger and use the inner ring if needed. Just a option as it saves the weigh and clutter of front mechs and shifters and an inner ring is very light.
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Old 02-21-16, 08:28 AM
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Originally Posted by Biketouringhobo View Post
My XT M771 RD is Max 34t and I would need XT M772 RD is Max 36t and I am Still thinking!
There is no universal practice as to where the rear derailleur hanger is placed in relation to the rear axle. Shimano, I was told, makes their recommendations using the most constrictive distance and angle specs that they are aware of. Most bicycles don't have these most constrictive elements so that some 'fudging' is possible. Try your current RD first.

Brad
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Old 02-21-16, 09:22 AM
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Originally Posted by OndrejP_SK View Post
1) technically 11-34 has more range between the lowest and highest gear than 12-36. If you don't need 22 chainring with 36 sprocket combination, you can just as well stay at 11-34. However some people dislike 11t sprocket (me too) for being to small and weak, so a cassette starting at 12 might make sense.

2) shimano specifications for derailleurs are mostly conservative, you can often use significantly larger sprockets than what they specify. using 36 with a derailleur with spec max 34 should be just fine. Using classic old style derailleur (not shadow) should help in this regard as when the classic derailleur goes to a large sprocket, the top guide pulley moves slightly lower (around the point where the derailleur cage rotates). Just don't use too long chain.
Shimano makes 13-34t hg300 9 speed cassette
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Old 02-21-16, 06:40 PM
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Originally Posted by veganbikes View Post
The 990 is their top of the line cassette designed for MTB racing more than touring and the 400 is certainly not on the same level it is Alivio and much heavier and different metals in parts of it. Lightweight stuff tends not to last as long.

Also don't go 11! The industry is doing the whole Nigel/Spinal Tap thing:
Marty DiBergi: Why don't you just make ten louder and make ten be the top number and make that a little louder?
Nigel Tufnel: [pause] These go to eleven.

There is not a good reason to go to eleven unless you are going to make the rear wider and space things out more. Shoving more and more gears in the same amount of space just isn't going to work so well in making a good wheel and good shifting. You cannot run friction when you are running 11 speed or at least not reliably and if you get yourself into a pickle you might want that option.
Did you try friction with 11 speeds? My friction shifters work with 6, 7, 8, 9, and 10 speed cogs. I might try 11 next month. Why do you think 11 will not work with friction shifters? I use suntour power thumb shifters, they are on bike #6 now. The bar end shifters, I have used only on a 9 speed cassette.

They are going 11 to get rid of the front derailleur. As the chain stay gets shorter and shorter, there is no room for a derailleur on the front any more
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Old 02-22-16, 10:58 AM
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I Got along fine with a 24:34 low and a 50:13 high .. for decades. friction shifting.
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Old 02-22-16, 11:25 AM
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Originally Posted by chrisx View Post
Did you try friction with 11 speeds? My friction shifters work with 6, 7, 8, 9, and 10 speed cogs. I might try 11 next month. Why do you think 11 will not work with friction shifters? I use suntour power thumb shifters, they are on bike #6 now. The bar end shifters, I have used only on a 9 speed cassette.

They are going 11 to get rid of the front derailleur. As the chain stay gets shorter and shorter, there is no room for a derailleur on the front any more
I have not actually tried it but have talked with many mechanics about it and I think at least one had actually tried it. You are shoving more gears into the same space and trying to make everything thinner and you need more precision to move the really short distance.

As far as getting rid of the FD, that is great, no real complaints. But if you are going to put more gears in the rear, widen it first. Get better spacing so things can shift better and perform better.
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Old 02-22-16, 07:03 PM
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Originally Posted by veganbikes View Post
I have not actually tried it but have talked with many mechanics about it and I think at least one had actually tried it. You are shoving more gears into the same space and trying to make everything thinner and you need more precision to move the really short distance.

As far as getting rid of the FD, that is great, no real complaints. But if you are going to put more gears in the rear, widen it first. Get better spacing so things can shift better and perform better.
So I will try buying just the 11 speed cog, then have to buy a shifter and derailleur since my ears are clogged.
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Old 02-23-16, 11:26 AM
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Originally Posted by chrisx View Post
So I will try buying just the 11 speed cog, then have to buy a shifter and derailleur since my ears are clogged.
I don't get it.
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