shimano 8000 11-34

[oldpotatoe]

That's the only 'road', shimano, 11s cogset that'll fit onto an otherwise 9/10s freehub body, correct, right now?

And MTB shimano 11s cogsets WILL fit onto a shimano 9/10s FHB..correct?


What happens as you get out of the 'trenches'...

[dustyrider]

I know the second question is true. Got mtb 11 speed on my mtb 9 speed freehub currently.

[ahumblecycler]

That's the only 'road', shimano, 11s cogset that'll fit onto an otherwise 9/10s freehub body, correct, right now?

Based on marketing, it should fit on a 10-speed hub (no idea about a 9-speed but do not see why not) although I have not tested it myself.

[weiwentg]

That's the only 'road', shimano, 11s cogset that'll fit onto an otherwise 9/10s freehub body, correct, right now?

And MTB shimano 11s cogsets WILL fit onto a shimano 9/10s FHB..correct?


What happens as you get out of the 'trenches'...

Technically, I think that cassette's model number is HG800. There's a 105-level version of that, and its model number is HG700 (no surprise there).

11s Shimano MTB cassettes appear to fit 10s road hubs. Here's one paragraph from Cyclingtips' review of the R8k cassette (https://cyclingtips.com/2018/03/shimano-ultegra-hg-800-11-34t-cassette-review/):

...it can fit a 10-speed freehub body ... all Shimano mountain bike 11-speed components work in this way, using the older and narrower 10-speed freehub body, and then cantilevering the largest cog over the hub shell, not unlike how the spokes on a wheel are angled toward the rim ... As a result, this cassette will happily fit mountain bike wheels, older road wheels with 10-speed freehub bodies, and is Shimano’s most widely compatible road cassette offered.

[SpeedyChix]

@oldpotatoe: Yes to both. Can confirm from personal experience this is correct.

The HG-800 cassette fits on a standard 11-speed (road) Shimano/SRAM-compatible freehub body as usual, but it can fit a 10-speed freehub body. To date it is the only Shimano "narrower" range cassette that lets you run 11-speed road on an older Shimano freehub. It's a great wide-range road / dirt cassette.

Mountain bike cassettes (including 11-speed) fit on the older freehub

[oldpotatoe]

@oldpotatoe: Yes to both.

The HG-800 cassette fits on a standard 11-speed (road) Shimano/SRAM-compatible freehub body as usual, but it can fit a 10-speed freehub body. Single cassette that lets you run 11-speed road on an older Shimano freehub.

Mountain bike cassettes (including 11-speed) fit on the older freehub

Thanks all...’standards’, PITA, glad I don’t all that wet from this crappola anymore.

[Blown Reek]

Glad to see that oldpotatoe is finally making the jump from a kitsch-y Italian brand to a more distinguished, better performing groupset. And from the looks of it, none of this wannabe racer 53/42, 12-25 crap, but an 11-34!

[R3awak3n]

Glad to see that oldpotatoe is finally making the jump from a kitsch-y Italian brand to a more distinguished, better performing groupset. And from the looks of it, none of this wannabe racer 53/42, 12-25 crap, but an 11-34!

Its probably for his lock up bike that stays outside :eek:

[bigbill]

I went with the 8000 rear derailleur on my gravel bike so I could run the 11-34. Probably could have used a 6800 and it would have worked, but the 8000 long cage was designed for it. I still haven't run larger than 11-32 but I'm considering going 1X with a 44 so the 11-34 would give me a little bit more range.

[GregL]

I use the HG800 11-34 cassette on one of my gravel wheelsets. It works on an 8-9-10 speed freehub body with no issues. Combined with 46/34 chainrings, it gets me over nearly all gravel climbs in CNY. One race I did last summer had a section of 22% grade on loose gravel. With the 1:1 gearing, I was able to remain seated and stay on the bike. All around me, other riders were forced into hike-a-bike mode to get over the hill.

Greg

[GregL]

I went with the 8000 rear derailleur on my gravel bike so I could run the 11-34. Probably could have used a 6800 and it would have worked, but the 8000 long cage was designed for it. I still haven't run larger than 11-32 but I'm considering going 1X with a 44 so the 11-34 would give me a little bit more range.
I can confirm that the 6800 long-cage rear derailleur works fine with the HG800 11-34 cassette.

Greg

[AngryScientist]

As mentioned there is a 105 level version that works now as well.

[mattsurf]

I went with the 8000 rear derailleur on my gravel bike so I could run the 11-34. Probably could have used a 6800 and it would have worked, but the 8000 long cage was designed for it. I still haven't run larger than 11-32 but I'm considering going 1X with a 44 so the 11-34 would give me a little bit more range.

R8000 RD works perfectly with 11-36

6870 RD didn't work well on my 11-32, but is fine on 11-30, but I don't think that it is a long cage

5800 RD Long cage works fine on 11-34

Shimano 11-34 is essentially a mountain bike cassette, due to the sprockets being bigger therefor further from the spokes, Shimano was able to set them back a bit so that they could fit on a 9/10 speed freehub

Edco do make a standard 11 speed cassette that fits a 9/10 speed freehub (I am using one on a Tandem)

I have not tried it, however I suspect that a SRAM PG1190 cassette (which is a single forging like the Edco) would work on a 9/10 speed freehub using the Edco "long" lock ring adapter. Has anyone tried this?

[enr1co]

...and for a compatability data point, currently run a HG800 11-34 with my chorus 11 mid cage and it works great!

[mattsurf]

...and for a compatability data point, currently run a HG800 11-34 with my chorus 11 mid cage and it works great!

Because Campag, SRAM and Shimano 11 speed cassette spacing is the same. Will have to wait and see if this remains the case with 12 speed in the future

[TimD]

...
Shimano 11-34 is essentially a mountain bike cassette, due to the sprockets being bigger therefor further from the spokes, Shimano was able to set them back a bit so that they could fit on a 9/10 speed freehub
...


Right. The reason the R8000 / HG800 fits on a 9/10 speed hub is that the 34T 'spider', if you will, offsets the cog towards the center of the wheel. As a result that portion of the cassette which mounts on the freehub is narrow enough to fit on the 9/10-speed freehub body.

[mhespenheide]

5800 RD Long cage works fine on 11-34


Can anyone else chime in with their experiences here, with a 5800GS or 6800GS? I think they're nominally rated for a 32-tooth rear cog as a maximum, but I'm guessing that it'll work fine in practice.

It would be delightful to be able to use some of my older 9/10-speed rear wheels with a 50/34 x 11/34 gearing combination. (Or even 48/34 in the front, but that's a different discussion.)

[jtbadge]

A 6800GS will work with a SRAM 11-36, so a 34 should be no issue.

[weiwentg]

Can anyone else chime in with their experiences here, with a 5800GS or 6800GS? I think they're nominally rated for a 32-tooth rear cog as a maximum, but I'm guessing that it'll work fine in practice.
...

Can confirm with a 6800 GS. No matter the manufacturer, there's frequently some wiggle room in the specs.

[mattsurf]

can confirm 5800 gs on 11-34

[mhespenheide]

Thanks!

[auto_rock]

Because Campag, SRAM and Shimano 11 speed cassette spacing is the same. Will have to wait and see if this remains the case with 12 speed in the future

But technically, this is exceeding the rated capacity of the med cage chorus by 2, right? Campy says the max is 32.

What size are you running on the front?

[Luwabra]

whaaaa!!! so I have a xt 8/9/10 cassette body and I tried an 11/36 11sp and no worky.. eliminated the 12t and works fine... so the 11/34 and 11/36 are different then?

[ChristianWong]

can confirm 5800 gs on 11-34

This and the 11-34t fitting on a 10-speed freehub is good news for me. Just picked up a nice set of 10-speed tubulars and a 6870 GS RD for my winter project. The 11-34t will be interesting on a road bike but I certainly (well, probably) won't be begging for more gears going up climbs.

[brewsmith]

So just to clarify, is the spacing between the cogs the same on the Shimano 11 speed mtb and road cassetes, with the difference being where the extra space is made up on the free hub? (Over the hub shell for mtb and longer freehub body for road)

[mattsurf]

whaaaa!!! so I have a xt 8/9/10 cassette body and I tried an 11/36 11sp and no worky.. eliminated the 12t and works fine... so the 11/34 and 11/36 are different then?

I am assuming that you are using a SRAM 11-36 which is a road cassette design and will not work on 10 speed freehub, however, the Shimano HG800 has a mountain bike spider and will work on a 10 speed freehub.

It is not the size of the sproket, it is the design of the spider

[jtbadge]

whaaaa!!! so I have a xt 8/9/10 cassette body and I tried an 11/36 11sp and no worky.. eliminated the 12t and works fine... so the 11/34 and 11/36 are different then?

No, I'm saying the SRAM 11-36 11 speed works with the 6800GS derailleur. It is built like other 11 speed road cassettes, so it still needs an 11 speed road freehub body.

The Shimano 11-34 is built like the Shimano 11 speed mountain cassettes, as pictured in post #16.

[brockd15]

I have not tried it, however I suspect that a SRAM PG1190 cassette (which is a single forging like the Edco) would work on a 9/10 speed freehub using the Edco "long" lock ring adapter. Has anyone tried this?

No, I'm saying the SRAM 11-36 11 speed works with the 6800GS derailleur. It is built like other 11 speed road cassettes, so it still needs an 11 speed road freehub body.

Yep.

Just to add my experience, I have an 1170 11-36 cassette that doesn't fit on a 7403 freehub (8/9/10 speed) but an HG800 11/34 that does.

[charliedid]

I'm using the 11-34 with 8000 group and bought "11 speed" wheels and was thrown for a loop when I needed to use the included spacer. My 10 speed wheels would have worked just fine...

[oldpotatoe]

Glad to see that oldpotatoe is finally making the jump from a kitsch-y Italian brand to a more distinguished, better performing groupset. And from the looks of it, none of this wannabe racer 53/42, 12-25 crap, but an 11-34!

Nice try but, ahh, nope. About a set of wheels I built for a formite.

[oldpotatoe]

But technically, this is exceeding the rated capacity of the med cage chorus by 2, right? Campy says the max is 32.

What size are you running on the front?

‘Rated’ at 32t max cuz that’s the biggest Campag makes...should be fine with 34t. These ‘ratings’ very conservative.

[pjbaz]

This thread right here is worth all the hours reading and busting chops on the forum!

Now, I'm considering buying one of these, a new RD and brifters (yeah, I called them brifters, so what? Wanna fight about it? :banana: ) and keeping the DA7850 wheels I have rolling along!

THANKS for this question.

[rkhatibi]

I'm running 34/46 and the 11-34T on my gravel bike. The m7000 gs cage is great with Wolftooth's tanpan adapter. Between the clutch and slightly longer cage than a road RD it's been great on heavy trails.

I don't know the constraints, but a 6800/5800 GS RD cage might not be hold enough chain for 34/50 if you're trying to get max range.

6800 gs - 37T total capacity
r8000 gs - 39T
m7000 gs - 41T


https://bike.shimano.com/en-EU/product/component/ultegra-6800/RD-6800-GS.html
https://bike.shimano.com/en-EU/product/component/ultegra-r8000/RD-R8000-GS.html
https://bike.shimano.com/en-EU/product/component/slx-m7000/RD-M7000-11-GS.html

[mattsurf]

I am running 50/34 and 11-36 with R8000GS, the range is 41, and there is still spare capacity in the RD

I am running 50/34 and 11-34 on my Tandem with R5800 GS, range is 39 and there is not much spare capacity

[TonyG]

Nice try but, ahh, nope. About a set of wheels I built for a formite.

There you go.... someone you can trust :cool:

[ChristianWong]

I'm running 34/46 and the 11-34T on my gravel bike. The m7000 gs cage is great with Wolftooth's tanpan adapter. Between the clutch and slightly longer cage than a road RD it's been great on heavy trails.

I'm sure your set-up is fine but you could go for the RD-RX800 GS rear derailleur and forego the Tanpan. The RX RD has a clutch and is made for the 11-34t so you'd shave a few grams there over the MTB RD for sure.

[henrypretz]

A 6800GS will work with a SRAM 11-36, so a 34 should be no issue.



I am also running a 6800gs rear derailleur with an 11-36 sram cassette. Shifts perfectly.

[rkhatibi]

I'm sure your set-up is fine but you could go for the RD8000 GX rear derailleur and forego the Tanpan. The GX RD has a clutch and is made for the 11-34t so you'd shave a few grams there over the MTB RD for sure.

Oh you mean the RX800 GS. Yep that looks like a nice option if you're building today.

[dddd]

So just to clarify, is the spacing between the cogs the same on the Shimano 11 speed mtb and road cassetes, with the difference being where the extra space is made up on the free hub? (Over the hub shell for mtb and longer freehub body for road)

I don't remember this being answered here, but the spacing on 11s MTB cassettes is different than 11s road cassettes.

And as far as using M-series derailers, no worky with road shifters (unless a cable travel adapter pully thingie or other klugery is used).

[BikeNY]

I don't remember this being answered here, but the spacing on 11s MTB cassettes is different than 11s road cassettes.

That is incorrect, the spacing on road and MTN 11 speed cassettes is the same.

And as far as using M-series derailers, no worky with road shifters (unless a cable travel adapter pully thingie or other klugery is used).

That is correct. The amount of cable pulled per shift is different between road and MTN.

[dddd]

That is incorrect, the spacing on road and MTN 11 speed cassettes is the same...

I stand by Shimano's and SRAM's 11s MTB cassettes having wider cog spacing than their respective road cassettes (roughly 2mm wider across the stack).

beware of trusting Art's Cyclery blog tables/charts!]

[ChristianWong]

Oh you mean the RX800 GS. Yep that looks like a nice option if you're building today.

Yep, got the name wrong. Edited above.

[R3awak3n]

What is the biggest cassette anyone ran with campy? I figure a 11-34 should work fine with an athena/potenza midcage but say add a wolf link, could we do 11-36 or even 11-40?

[PaMtbRider]

What is the biggest cassette anyone ran with campy? I figure a 11-34 should work fine with an athena/potenza midcage but say add a wolf link, could we do 11-36 or even 11-40?

Can't give an exact answer to that, but will say I am running an 11-34 with a stock Athena rear derailleur with no problem.

[BikeNY]

I stand by Shimano's and SRAM's 11s MTB cassettes having wider cog spacing than their respective road cassettes (roughly 2mm wider across the stack).

Where did you get this information? I'm running an 11 speed MTN cassette with an 11 speed road rear derailleur and shifter and it works perfectly. If what you say is correct, it wouldn't work.

[oldpotatoe]

Where did you get this information? I'm running an 11 speed MTN cassette with an 11 speed road rear derailleur and shifter and it works perfectly. If what you say is correct, it wouldn't work.

From the interwebs.

Yes it’s fine to run Shimano 11 speed mtb cassette on 11 speed road hub. Just remember you need a mounting spacer for the free hub, as mtb 11spd have the same spline length as road/mtb 9-10 speed etc. The sprocket spacing is the same between road & mtb 11 speed, but the mtb ones overhang the largest cog over the inside mount face – i.e. in towards the spokes.

IF you use a shimano MTB cogset onto a taller 'road' 11s FHB, you need to put the 1.85mm spacer on first, like you had to do with a 1s cogset onto a 11s road FHB...

[BikeNY]

From the interwebs.



IF you use a shimano MTB cogset onto a taller 'road' 11s FHB, you need to put the 1.85mm spacer on first, like you had to do with a 1s cogset onto a 11s road FHB...

That's exactly what I thought. I don't have any 11 speed road freehubs, so I don't have any 11 speed road cassettes!

[zank]

You guys are talking about two different things. Spacing between the cogs is the same, so you can use an 11 speed mountain cassette with road derailleur and shifter (same indexing). The freehub and cassette are longer for 11 speed because you can't cantilever the largest road cog out over the spokes.

[BikeNY]

You guys are talking about two different things. Spacing between the cogs is the same, so you can use an 11 speed mountain cassette with road derailleur and shifter (same indexing). The freehub and cassette are longer for 11 speed because you can't cantilever the largest road cog out over the spokes.

Yes we are. They are of course related though.

I was responding to the post by dddd stating the cog-to-cog spacing is different between 11 speed road and mountain cassettes.

[dddd]

Finally getting back to this thread after looking for additional information as to the spacing of Shimano 11s road and mtb cassettes.

I was using the tables shown on Art's Cyclery in their (now pretty old) blog post, one that has been referred to on many forums over the past couple of years!

Their tables show Shimano and SRAM both using slightly wider cog spacing on their 11s MTB cassettes vs. their 11s road cassettes.

But I should have been wary, since I had found another mistake in their tables relating to SRAM's 11s road shifter's cable travel, and that mistake goes uncorrected to this day.

Perhaps it is difficult for them to make changes to their post(?), since the earlier mistake I noted has been brought up in their Comments section.

http://blog.artscyclery.com/science-behind-the-magic/science-behind-the-magic-drivetrain-compatibility/