The Ideal Tour Divide Drivetrain? Ultra-Wide Range Shimano GRX 2X11
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- čas přidán 5. 05. 2020
- In this video you will find out how to achieve a 585%, ultra-wide range 2x11 using an 11-42 cassette with a Shimano GRX 815 or 810 derailleur. We tested three different cassette ranges and the limits of the GRX derailleurs in this how-to video.
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You could also remove the B-screw completely and reinstall it from the other side, so the screw head is contacting the hanger instead of the screw tip. Harder to adjust but gives more surface area contacting the frame.
Great video, I'm running GRX810 with 11-40 XT cassette switched to the goatlink10 found this has improved the shifting making it flawless. I think the better contact patch for the B screw has made the difference, the machining of the goatlink is far better than the stock bracket axle unit.
I have nearly 5,000 miles in my 11-42 x 30-46 GRX810 with the Wolf's Tooth. I have some very punchy hills here on the Wabash river. I'm 64 years old. This system works great. I ride a 2022 Trek Checkpoint SL5. I would recommend this combination if you need more gears for the hills.
With the wolfs tooth 10 or 11? I have the 2021 Checkpoint SL5
Can you tell me specifically what cassette (XT CS-M8000 11 speed??) and is it the 10 or 11 speed wolf tooth?
@@GasmanA Make sure you understand I'm using the GRX810 which has a total capacity larger than any other version "Total capacity: 40T"
Yes i have the 810 Shadow R+….should be the same rd….so you know which Goatlink? The road DM or Goatlink 11 speed? Also, thats 47T total right?
@@GasmanA The RoadLink DM (Direct Mount) is the RoadLink that fits Shimano’s GRX 810 (RX810), R7000 105, R8000 and RX800 Ultegra and R9100 Dura-Ace rear derailleurs. Since its introduction, the award-winning Wolf Tooth RoadLink has given riders the ability to easily increase the range of their Shimano road drivetrains while maintaining near-factory levels of chain wrap and shifting performance.
Like the mountain-focused GoatLink, the RoadLink DM replaces Shimano’s stock direct mount link allowing you to relocate the derailleur to provide clearance for larger-than-stock range cassettes while maintaining chain wrap and improving shifting. The result-larger gear ranges that riders want and expect for their road, commuter, gravel, and touring bicycles.
Compatibility
Fits Shimano R9100-generation Dura-Ace, R8000-generation Ultegra, RX800 and RX805 Ultegra, and R7000 105 rear derailleurs
Optimized for use with GRX ultra wide range drivetrains when using the GRX 810 (RX810) rear derailleur
Fits standard derailleur hangers only
Direct mount derailleur hangers are not supported. These are not common and the stock b-link that the RoadLink DM replaces will not be present on bikes with a direct mount derailleur hanger
Optimized for use with 11-36t, 11-40t, and 11-42t 11-speed cassettes
Will improve performance with 10-42t 11-speed cassettes, but not to factory levels
Does not change the derailleurs total chain wrap capacity.
www.wolftoothcomponents.com/products/roadlink-dm
Neil, you answered some questions I didn't even know I had. Thanks for the great video buddy.
I did this on my Gravel bike, 2X GRX 810 with the 11/40 XT cassette. I didnt even have to put a longer chain on. It works great on the steepest hills Ive found. I even tried the 11/40 cassette on my Di2 roadbike, it works! Just needs a longer chain.
Goat link or no goat link?
Bought and Inställningar GRX front and rear deraileur. This video helped me alot! Thank you for your work brother!!
This was awesome. Thanks for geeking out on whether different things would fit and even mentioning gear inches. Way to go.
Gear inches are the cycling equivalent of "on my machine," change my mind.
Well, I’m sold! Great content, to the point. Have been wondering about upping to the 11-40 with GRX and this gives me the confidence to go for it. Thanks.
Good job. Always good to see what others trying.
Best video on CZcams. Did this today, GRX 810 46/30 front, went from 11-34 to 11-40 in the back. I did have to switch to a longer chain as big-big was blocking with the chain my bike came with. Went with the default length and big-big/small-small won't kill my bike now.
The only issue I have now is that in one or two in-between gears the chain jumps. Hope to get that right with some B-screw adjustments...
Thank you for the excellent video, this was exactly what I was looking for. I want a Kona Rove LTD but the stock 11x34 wasn’t gonna cut it for me. Based on your results I ordered the bike, a 11x40 cassette and the 10sp Goatlink. Now we wait 7 months until the bike is delivered in August, arghhhh. Thank you again I love the channel, the website and I recently signed up for the Bike Collective membership
How'd it go? Just bought one of the last 54 cm Rove LTD framesets available on the east coast and am looking to do a similar build to what you described.
Awesome, thx for the inspiration! I went with an 11-42 XT
casette in addition with a roadlink DM on Easton 47-32 chainrings. Even with the stock 11-34 chain big/big isn't critical. Cervelo Aspero GRX mechanical.
I want to thank you for this modification. Just bought my wife a new pricey gravel bike with Grx di2. Gearing wasn’t easy enough for her. Was wish I bought a frameset and did a Mullet build. BUT bought a XT 11-40 cassette and a 10sp goat 🐐 link. Went together nicely. Actually had to dial the B screw almost all the way in as it was pushing the DR too far out. So YMMV based on the frameset’s dropout setup. Thanks sooooo much. Will certainly help with backpacking. Now to mess around with my setup. Thanks much for this vlog perfect timing for us!!!!
I'm in EXACTLY the same boat. New Di2 gravel bike for my wife (still waiting for delivery), but the Shimano GRX gearing doesn't match her current bikes. I have been searching for solutions wanting to correct this before her first ride (although I'll probably get her up and running w/ stock set up to avoid any delays). In the old days, I'd just put a MTB cassette and RD on her 9 or 10 speed bikes. Easy peasy and cheap. I was about to try the RX817 or figure out compatibility with MTB RDs which would have been expensive (but worth it for the gears!) But this solution will be what I try first. I plan to size the chain to give a safe big-big combo and either count on the Di2 to avoid small-small (assuming the chain's too long) or just live with that. I think people are much more likely to use the big-big combo than the small-small. Plus erring on the side of too-long chain just is noisy in small-small, not potentially catastrophic like a too-short chain in big-big.
Long way of saying, I'm glad it works for exactly what I'm looking for.
FWIW, my new gravel bike will be Etap AXS which (a) gives quite a bit lower gearing as a standard configuration and (b) is dead simple to combine with MTB stuff if needed. No complicated compatibility stuff needed, it's just cross-compatible.
Amazing work , thanks for sharing and figuring it out for us , will go with the 10speed goat link and 11-40 thanks to your hard work 🙏
Great info. Saved me all the hard work for gearing my next "do everything" gravel build 😁🚴♂️👍🇦🇺
I was only just commenting on the website the other day about this subject.
I've got just shy of 5000km's on my Warbird running mechanical Ultegra with 48-32 Praxis Zayante 4iiii crankset, 11-40 XT cassette and Ultegra RX800 clutch mech.
I haven't needed to modify the mech with either another B-screw or an extender.
One thing I have noticed is that I think the mech is probably more sensitive to knocks and you have to do minor adjustments a bit more often.
With the mechanical set-up I also think having the best quality cables is important for getting the best results with this configuration. For me that's the relatively expensive Shimano Polymer coated ones, and I give them an extra coating of Shimano SP41 cable grease too.
Nice video! Thanks for covering this topic in detail!
About time somebody did this. I've wondered the same myself!
Such a Great Video with so helpful Details! Thank you so much!
Excellent vid...just what I was looking for explained very well. Thanks.
Super well done video! The camera work is outstanding. As they say a picture is worth a thousand words and good video is worth even more. (Well I say the last part). Anyway thank you.
This is a great video. I have reworked a build I'm doing on my Domane SLR frame. I ordered the GRX 48/31 paired with a Leonardi General Lee CX 9/36 cassette with a goat link 11 on a Sram XD hub.
This allows me to run on high better than 54-11 and as low as 42-50 with a close gear ratio 9-10-12-14-16-18-20-23-27-31-36.
How is the set up going?
Agree.....I have 11-40 XT with 48-31 GRX chain set/shifters and derailleur (mechanical). No issues completed a gnarly gravel race yesterday (Seven tour of Margaret river). No shifting issues, no dropped chain. All good, however, the pilot was broken
Hi. Do you have RX-810 or RX 812 rear derailleur? How many links does your bicycle chain have?
Have to come back and thank you for this video. I'm now running my diverge comp carbon 810 2 x 11-42 and it is awesome. can climb all day and not die :)
You needed the roadlink dm? how many links in the chain?
@@BernatCasero KMC X11EL 11 Speed Extra Light Chain 118 links and using the 10 speed wolf tooth as used in the video. No additional links were added or removed
Cool video, I recently set up a mullet 1x12 drivetrain on my surly straggler. 38t chainring with 9-48t leonardi general lee cassette. 533% range with about 20.7 gear inches (650b wheels).
Did this one with a GX 11-42 cassette/r derailleur with a 24/38 front tied to Genevalle levers. Works great, I really like being able to dump a whole cog at once.
What brand is that 24/38 crank? Thanx
Loving the videos!
Great info and thx for the detailed video
I have mounted a 11-46 XT cassette to my 1x GRX. I used the long cage and the Goat Link from Wolftooth. Works perfekt.
Excellent info very helpful thank you!
that was a spicy twist! i bought a 650 wheel with an 11-40 casette and was worried it wouldnt work!
Use a file or Dremel to put the proper groove in that derailleur hanger, that's what the Lord of the game told me and it worked.
would love to see you do this with the new 2x rival electronic. cheers.
Awesome gear nerding! Thanks!
Thanks to your video, I tested every combination you mentioned: the ideal setup for the 11-42 casette in combination with 31/48 cranks is to buy the RX-812 derailleur for large translations and use the derailleur cage of RX810 (or something similar long). Shimano describes the exchange in their instruction manual pretty perfectly. Furthermore then you do NOT need a custom goatlink! The original screw fits perfectly!
Did you use a different Chain
So a MTB Chain?
@@Batou_73 Hi Rory, I am using the "normal" chain which Shimano recommends for GRX: CN-HG701-11. I even didn't change the length after I changed my setup. Still works perfect 🙃
@@31180HTB482 perfect fitted my 11-40 two weeks ago.
Just wonderful!!!! Just plain perfect for hilly gravel rides you still have the speed but also serious climbing capabilities!
H can I please ask a question. Is this gear ratio combination possible
48/31 GRX crankset
11-42t XT casette
GRX 810 RD with Wolftooth DM
12 speed Shimano chain
Thank you.
@@fleetadmiralhazen Hi Bücky, this should work with the Wolftooth Goatlink 10V. But when I tested, I found my combination of RX812 derailleur with RX810 derailleur arm fitting even better. But as you guess, it is of course much more expensive 😉😑
Great Vid, cutting through the internet noise!
Great video, and thanks for covering the Goat Links. Some say that you don't need a GL with an 11-40, but you get a better B Screw placement with one, so that's what I'll be using!!
Great video! very educational.. thanks for posting.. and thats why I was contemplating using the XTR rear mech even though I have GRX crank?
Great Video, cool analytical, technical approach, plus all the testing outdoors - Perfect.
I currently run Ultegra r8000 cranks (50/34) with a standard Ultegra RX derailleur, so basically similar to the GRX RD in terms of capacity.
About the same results: Put on a 11-42 XT cassette - runs without problems. Tried the goatlink 10 but it didn't seem to provide as much chain wrap on the 11T cog as the standard derailleur link does, the latter with some turns on the B-screw, of course.
For heavy-loaded bikepacking, up front I might still swap to absoluteBLACK sub-compact chainrings (46/30T), and with cassette options from 12-25 up to 11-42 that should give me all the versatility I need.
Whishing you more of those rainy workshop days,
Cheers, Nik
Really helpful, cheers!
Outstanding video! Exactly what I was looking for. Thank you for going into the detail with all the various set-ups. Searching around the net for information on this modification I've seen tons of interest from cyclists out there. You'd think Shimano would get the message.
I went with the 11-40t XT cassette to go with my GRX 810 derailleur and 46/30 front rings. I used the Goatlink 10 speed and the B-screw is basically flush with the platform on Goatlink - and it's barely screwed in. Perfect shifting! I feel like I could have gone for the 11-42t without any problem, but I'm very happy with my 558% range and 20 gear inches.
What reference is your 11-40 XT cassette? Thanks
@@pablola1001 Shimano Deore XT CS-M8000
@@rsrnsrwds thanks
I think it is for.11 speed and I need 10 speed. 11-40
@@pablola1001 Look at this these, Shimano Deore CS-M4100 10-Speed Cassette in 11-42t, or the Shimano Deore M6000 CS-HG500-10 which now has an 11-42t option.
Thanks for the video. I am running a 2x shimano ultegra with a 10-42 SRAM cassette for 2 years now - it works flawlessly !!!
Thank you for sharing! This is very helpful. I have got GRX810 and wondered if I can put on 11-42 cassette!
thanks incredible video !!!
Very informative. Thanks. I am torn right now between a Di2 GRX with 48/31 and 11-34 or a 1X ETAP setup with 42 upfront and 11-50. Part of me thinks maybe the 1X with the (MTB) 50 is the ideal touring drivetrain?
You can simply use a GRX812, which is for 1x11 with 11-42 cassettes. The cage can be changed to an M8000 SPS cage (from XT) to equalize the chain lenght of a 2x11 drivetrain. The parts are available as spare parts.
Shifts like Butter and can easily be adjusted.
So, you dont need something from Wolftooth, even if the components are good.
The new magic script is the shimano road or GRX FD can work with 18 tooth diff chainring. Such as 48-30, 46-28, 44-26 and 42-24. so 2 smaller cogs would be better than 2 big ring right now.
@@user-zu4nl7bm9esounds great, although I can't find anything on that setup. Can you tell me more or link something?
Running GRX 2x11, 46-30 front. With a Wolftooth Roadlink the GRX rear derailleur easily handles a SLX 11-40 cassette no other changes but that you need to tune the shifting a little. This set up allows me to forget not to cross chain, as it handles both extremes on the front/rear without any problems. Frame is Niner RLT steel, and I use 114 links on the chain iirc. I have found this is pefect for my use, but ofc a 42 cassette would be nice if traversing the Alps or similar... Not tried that size cassette on my set up though.
Thanks for sharing this. I am running the grx400 46-30 x 11-36 and am looking for a bit more climbing gear. Good to know that the goat link works with the larger cassette. Did you end up trying 42? Curious if that would be too much. Thanks
@@timothydoyle8269 After much trial and some error I finally ended up with a slightly different tweak. Things worked just great but I wanted them to work even "greater", if you catch my drift.
Kept the 11-40 cassette in the rear, but I got a GRX RX812 rear derailleur (yeah the one for the 1x11 drivetrain) and also a Garbaruk derailleur cage. In that cage I then put the original jockey wheels from the RX810 derailleur as to get enough "leverage" to really keep the chain taught enough on the high end of the gears.
This set up did away with the fact that I, after some use, noticed that the Wolftooth slipped for me, and had me need check it a bit to often for my liking.
I think that a Wolftooth with slightly longer reach, and "set angles" - sat 5 degrees apart - would be the cheap ticket. Sadly, that does not exists.
I say; get a Woolftoth and try it! I had immensely fun until it just started to get a little bit annoying. But it was so worth it so I do not regret a minute of that tweaking.
Now, with the last set up, things pretty much feels like factory stuff, with the only exception that if I cross shift big/big, the gears protest.
Great video! How was the derailleur position in the smallest cog you can reach while in the small chainring? GRX Di2 locks you out of the smallest two when you're in the small ring right? Like on road Di2? I know small ring and 3rd smallest is not a good gear to use, but I like to idiot-proof my drivetrains because mistakes can be made when you're tired. Does the derailleur overlap on itself in this configuration?
Great! Good info!
From the beautiful bike rear end thumbnail I could instantly deduce that the bike in question is a Salsa WarBird. Salsa has nailed it with the WarBird frame design, especially, the rear triangle. A beautiful design!
Except that it was a Salsa Cutthroat...
@@mikesobo9818 I don't remember if I watched the entire video, but it that is the case, then surely the 2020 model, whose rear end resembles WarBird's quite a bit.
Wolftooth worked for me with an 11 40 and a deore long cage.
Thanks. I've tweeted this to Shimano - hopefully they'll address the situation and extend the low gearing, so we don't have to faff around.
Why don't you just use the grx derailleur that's meant for 11-42 cassettes?
They do exist! (GRX RD-RX812 and RX817 for di2)
@@sebastianjost Yes, but they're not meant for 2x.
@@sebastianjost $$$ compared to this solution. Plus, if I'm not mistaken, their chain wrap is no bigger.
@sebastianjost
The upper pulley is offset from the pivot point of the cage. This means the pulley moves down as the der moves to a bigger ring because more chain is taken up. The problem is that this will also happen when you shift from the small to big ring in the front
An FYI regarding cross-chaining!
I regularly cross-chain using big-big, 48t front and 40t rear, and under strain when climbing! I don't over use this combo but I'm certainly not afraid to use it and I haven't experienced any issues so far. As I've said before that's 5000km's on my set-up. I'm on my second chain, a KMC X11 SL Gold. I ride my bike in all conditions including winter in the UK. We just had one of the wettest on record and I had no issues👍
May I ask if you are using Di2 or mechanical? I'm in the process of speccing my new bike, and I'm thinking 48/31 front and 11/40 back, but not sure the chain will be long enough... or that Di2 can be set up like that!
@@dlevi67 I'm running mechanical but by all accounts Di2 is even better as you don't have any issues changing under load whatsoever! I normally have to remove about 3 or 4 link's on KMC chains. I would start with the full chain then just remove a link at a time till you are happy👍
@@adski71 Thank you very much!
Good video, very informative. Why did you use the goatlink 10 as opposed to the 11, with the 810 derailleur?
This can be done on the cheap with Sora 9 speed with more even jumps! The reverse mullet. Samox Hollowtech style crankset comes with 28-44 chainrings. Change inner ring to 24 tooth XT ring. Microshift 11-32 9 speed cassette. With a Sora band type front derailleur mount, capacity is 20 tooth wrap difference. Sora RD capacity 34x11 so within limits. Granny gear is 20 inches. Top gear is 108 inches. A bit limited at th high end, but a loaded bike on gravel and worse, seldom would you need more gear. Mine is on a Topstone aluminum version road touring bike. Mine is set up 26-44 front 12-14-15-16-18-21-24-28-34 no roadlink or other mods needed. I VALUE the 66-74-79 ratios for flat areas for close cadence.This is a custom cassette! Someday I'll file the narrow spline on the 15 sprocket to align with the ramps and profiling of the adjacent cogs. It still shifts smoothly, so maybe not. Long chainstays on the Topstone make cross chaining work OK. It doesn't make noise when backpedaled.
Planning to set up a gravel bike soon
Hey Neil, cool review! I've got a 2017 cutty. I'm thinking of the shimano xtr di2. Would the 10-45 rhythm step cassette work with that set up? Not sure on the front rings yet. Thoughts?
Neal, thanks for this video. I've got the v2 cutthroat as well. Question for you - any recommended 2x chainset and cranks that would give even lower gearing? e.g. 28 or 26 tooth small chainring?
Im running all shimano 105 11 speed 50 34 cranks and a 11-46 cassette the rear derailleur is grx 812 and the pulley cage is a rd m8000 ...shifters are flat bar rs700 11 speed....bit crazy....but it works....good top speed and low speed....am thinking about getting the garbaruk cassette and pulley cage ...for a bit of weight saving and smoother shifting....but tuned well what i have works great....
FYI, ltwoo 11- 52 with the ax derailleur works with ltwoo drop bar levers. I'm running this set up 2x with 46, 30 chain rings.
Thxs for the vid. Do you know if the 48/30 chainring would work as well with the 11-40 cassette? In a GRX 815 Di2 setup?
Great video! will this work exactly the same with grx 600 2x set up?
Diggin the videos! Any tests coming up with the 10-46? For me running a 1x with a 36t chainring and the Sunrace 10-46t cassette is perfect.
I’ll do that next. I’ll need to get a bigger chain and that cassette, it can be done.
I have a grx-810 on my Fuji cross using a sram 11-36t cassette and 46/36 front chainrings. It was setup by the local bike shop and it has a lazy shift coming down from the 36t out back and they said its just because I'm "exceeding capacity" but I know it is possible since the shifting you demonstrated in the video is crisp. Would you recommend adding some b screw clearance to help or would the 10 speed goatlink help the shifting? It does shift clean everywhere else just when spinning in the 36x36 combo then shifting up it takes a few extra rotations before it drops
Hi thanks for nice video, I have question how much longer chain do you need when you use goat link?
why does the 10 speed wolftooth work with an 11 speed cassette?
Hi there! I was wondering if my 105 5800 50-34T crankset would work well with an 810RD on an 11-40T cassette. Thanks for the great vid!
Great Video. i have a GRX 810 rear and Ultegra FD 2x11. i want to run 2 sets of wheels a 11x42 and the 11x34 i am running now. do you think i can swap wheels with a single chain. Looks like I would have to mess with the limiter screw. But don't want to have other adjustments.
Super helpful. Great video. What model 11-40 did you use? Thanks
Neil used the XT CS-M8000 cassette.
nice video! What kind of shoes are you wearing?
Great video - literally just switched to an 11-40t cassette on my GRX Di2 Cutthroat two weeks ago and it works great. One bonus about running Di2 in this setup is that you can program synchro shift so that it avoids the slightly out of spec big-big or small-small combos. In practice that 560% gear range is absolutely amazing for a do-anything bike like this.
hi jon are you running a 2x system and any reason you went for a 11-40t over a 11-42? does is shift better on a 11-40
@@wingit8288 I think it could do it but sounded like it would be pushing it just a bit. 11-40 felt a bit safer than 11-42, and I wouldn't worry about breaking things if I accidentally shifted big-big for some reason. Also, it sounded like I might need to add some chain links to get things working OK with 30t/42t. There's another video that talks a bit about this: czcams.com/video/wNeYYM9_aeM/video.html
Great vid! … please some guidance and advice. I own a 2016 Giant Anthem carbon 27.5 … full susp … XT groupset. I’ve had many years of carefree mtbiking on her. My interest is now leaning toward multi day bikepacking (mainly gravel) … don’t have the cash available to invest in new bike thus considering converting my trusty Anthem for gravel use. I guess biggest consideration will be drivetrain … will GRX 2x work? MTB shifters? .. what would be the ultimate combo?
I've been riding a 3x10 setup with 840% gear range for 4 years now:
czcams.com/video/Zs9GWCjuUss/video.html
Just upgraded that to hit 900% with a Garbaruk cassette:
czcams.com/video/GM-cn_giBb4/video.html
Running the RoadLink on a 9sp rapid rise RD with Gevenalle shifters.
Oh, my GOD! Your drivetrain is so *filthy* it almost resembles *mine!*
BTW, I'm at about 4000km with an Acera derailleur and a 11-42 casette... The tensioning screw sits well on the hanger and never had any issues with that. I might try 45T next cassette change...
Those bastards lied to us... 36T largest cog, dammit! :))
I’ve been running standard 105 R7000 front and rear mechs with an 11-40 Slx cassette and 50 - 34 chainset on my bike for over 1000 miles with full range of shifting available. It’s a great range of gears for any road!
Neil Henderson With a standard “B” screw, or did you swap out the standard “B” screw for a longer one?
Currently using GRX RD 812, 10speed Deore cogs 11-42, Tiagra 4700 sti, and GRX RX 600 46-30 and GRX RX 800 FD. Works perfectly fine 👌
The RX400 RD won't work with a 11-42 cassette?
Running exactly the same set up which was working perfectly, although cross chaining has become an issue lately.
oh damn that's a wide ratio. how did it hold up?
Great video ! really informative ! I am wondering how could such a wide range drivetrain somehow be set up on a 2x11s shimano 105 5800 SGS long cage (& RS700 lever coupled with a 50/34 crankset) ? [gravel flat bar type of bike]. Thanks a lot in advance for the help ! Cheers !
I have just tested 11-42 on 105 5800 GS (there ist no SGS!) using a RoadLink-Copy. The manufacturer Bikeco/Bolany sells cassettes with that copy as a gimmick in good quality (both of them).
11-42 ist not as easy to handle as with version 7000 (which is similar to GRX 810). I guess on version 5800 11-40 would be fixed much easier.
The RoadLink copy would also work on version 7000 or GRX 810. Different to RoadLink DM, it has to be installed addittionally, not replacing the original Link.
I have 11-42 with the 105 back derailleur B screw is screwed in almost all the way but it works I would say almost perfect.
I take this would work with any 2x crankset? Would you suggest to be safe to use a goat link or would I be fine without it? Would swapping the upper jockey wheel to a Wolftooth 11spd or both wheels to a garbaruk GRX one help? This will be on a gravel bike & not touring.
Well many, many months after this video I finally did the conversion: went from 34 x 48 Praxis Alba with 11v 11-34 Shimano cassette running with Ultegra clutch mech (same cage length and hence same Shimano official limitations as GRX).
I dropped the big ring from 48 to 46t to reduce total teeth range in the system and added a Sunrace 11-40 cassette. It worked really well! Didn't even need to fully screw in the B tension screw. Sweet : )
I will do this as well, just bought an 11-40 cassette and will pair it with my GRX 46-30 crank and 810 derailleur
Use an XTR mountain bike rear derailleur to expand the cassette options. Compatable with GRX 815 DI2
That's nice for lower gearing but what about the top end? Ive already spun out my current 48/32 11-32. Any solutions to gain more top end for gravel racing.
I use an 11-40 xt cassette, grx long cage + wolf tooth and a 42-26 double. Works flawlessly.
Nice. That's the sort of setup I'm after. Can you share some details about your front derailleur? Is it GRX, and did you need a braze on adapter to reach all the way down to the 26t chainring?
@@dennismicallef9350 it's grx and it reaches super close to the chain stay. My frame hasn't anything welded on for front derailleur, so I could freely move it around.
Hi !
Great video.
1. Could you do a table summary and post it in the description with the various combinations used and showing what works / what doesn’t.
2. I have Ultegra 6870 11s Di2 long cage with 50/34 and 11/40 + the RoadLink. I have done roughly 5000km. Not a single problem.
I'm wondering how using a goatlink on a 2x GRX 815 would compare with longer, Garbaruk-style cage mounted on 1x grx 817. Any thoughts?
Was thinking about trying to run a 11-46 with a goat link and a GRX mechanical 2x drive train. Any idea about whether this will work? Any reason why you opted _not_ to use a goatlink?
Neil - thanks for the incredibly succinct and informative video. You are a god of bike-packing, so I am curious about my setup. I am running the low-end (apex) build on my 2020 cutthroat, but I had the shop swap out the stock cassette for a trs+ 9-46t. I have had no problems yet on my short rides- haven’t even looked at the b screw. Should I be concerned? Am I giving up cassette durability or longevity of the derailleur? I mean, I’ve got 511% range...I know I am missing something here, but only have 100 miles thus far. It’s no smooth-silky Shimano shifting butter but it gets to the gears. I aspire to run the tour divide so your thoughts are like gold to me.
Hey Rex, I'm of the mindset that you should trust your bike shop and I would assume they checked that b-screw. I know some setups work better than others and some drivers shift better than others. I say give it an honest try for a few more weeks before you make a decisions going forward. That being said, the GRX 815 has been an incredible drivetrain so far, exceeding my expectations and being pretty friendly when working with cassettes that are technically not compatible.
@@BIKEPACKINGcom Loved the video. Lots of golden nuggets of info. I've been looking to maximise capacity on an upcoming 1x Di2 build. The e13 TRS 9-46 paired with a 38t up front seems to tick all the boxes. I'm still in two minds as to what RD is required. Do I go full mullet and get an XT or XTR, or does the GRX 817 suffice? Any goat links or longer cages required do you think? The recent Guide to Mullet Drivetrains article was great but left me with some questions!
Hi I’m looking for different crankset than grx 810 2x. I see you use the Easton. Does chainline play any issue with how it shifts at front derailleur? Did you have to add spacers or anything to accommodate the extra chainline? I’m going to need bb86. Will it be ok?
So are you better off getting the grx RX-817 which is rated for a 42T cassette or would you have to give up the option to use a 34T as the 817 spec says min. 40T?
The 817 and 812 (I think are their names) are meant for 1x drivetrains and can therefore be used with larger cassettes.
However the total capacity they can absorb in chain length is smaller than that of the 2x rear derailleurs.
So when trying this conversion, you're better off with the 2x derailleurs (810/815).
However someone else mentioned that using the derailleur body of the 1x derailleur and the cage of the 2x works very well for 2x drivetrains with a large cassette (like 11-42)
SRAM Rival 10sp shifters, Shimano GRX FD & 46/30 crank, SRAM VIA GT RD, 11-36T cassette. Works an absolute dream.
Ur running rim brakes correct?
@@artcaballerojr I was running mechanical disc, I’ve now upgraded to rival 22 hydro and an 11sp 11-36 cassette.
@@mf0u3021 right on are you also using the cuthrought,
Good sir question. Would the 11-42T casette work for a 46/30 and 48/31 GRX crankset if you add a wolftooth dm on a GRX810 RD?
The rear deraillear can't count the chainrings, so just does what it's told very well. It also hasn't read the Shimano manual, so doesn't know it's out of spec. It's designed for 11-42, and doesn't know any different. Shimano are always a bit conservative on their chain inches and overlaps to allow for people like my better half who insist on noisy cross-chaining. That's why I've just converted hers to Di2 GRX, which also works well with 11-40, but still need to fine tune the sequencing on that.
Deore 3 x 10. Job done. Don't fear the triple.
A lot of our bikes now a days aren’t made to fit the triple
Which way round does the 1.8mm spacer go on the free hub? does it only go one one way? Mine fell on the floor when I removed my cassette and am not sure if it is supposed to bottom out and the hub end or not.Thanks
Great info. Did you lengthen the chain each time you installed the bigger cassette?
No, I used a standard 116 link chain, but when going up to the 42t cassette, it could be helpful to use a longer chain.
Have you tried (or thought about it) to swap inner/outer plates of a rd rx817 (intended for a 1x) with plates from a super long cage from an XT rear derailleur (RD-M8000 inner/outer plates SGS) to increase chain wrap and make it work with a 2x drivetrain and bigger cassettes?
In theory it should work..
The parallelogram of the derailleur will also factor in how big of a cog you can run.
Does anyone know if the GRX 817 rear derailleur would work with a 2x 11-42 or would shimano's system lock me out?
Hi Neil
I have the Easton 47/32 chainring. Would this work with the 11-42 chainring, using my GRX 815 w/ 10sp goatlink?
Many thanks
Drink everytime he says "bracket axle unit"
Lol!
Has anyone tried to swap to the Shimano GRX RX812 derailleur with the 11x40T on a 30x46 front? What was the result?