Duration 7:1

Overshifting Problem On Sram NX Eagle - 1000 km Test.

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Published 28 Aug 2019

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Comments - 256

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@DouglasSantos-vy9zq4 years ago You can place a wedge between the derailleur and the hanger (a piece of rubber from the air chamber, for example). This removes the slack that exists in this region and thus improves the accuracy of gear changes. 5
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@patrickprouty44154 years ago I believe the problem is the derailer hanger is bent. The longer pulley arm is exerting enough lever force to bend the hanger toward the wheel slightly over time. This causes chain to rub the big cogs first. Reducing cable tension fixes the big cog rub but causes the over shift on the smaller cog. It just gets worse (keeps bending) to where if you can tune the high gears or the low gears not both. Straighten the hanger fixes the problem temporarily. I’m trying to source a stiffer hanger as I write this. ... 3
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@TriHard765 years ago Have you adjusted the B screw? I had the same problem with my GX setup and the local shop couldn’t figure it out. I adjusted the B screw and the skipping and double shifting stopped. 9
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@bilingual5f5 years ago I also had this problem with brand new NX Eagle. Then I tried to adjust the tension of the cable and now I think it is much better. 1
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@wallyedmonds4 years ago It’s a fine thing to tune in when it gets run in , had it years ago with LX
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@vincef74874 years ago Could the cable HOUSING be affecting the derailleur movement ...causing the mis-shifting? My bike has internal cable routing and I've noticed after a few rides that the housing has extended out of the chainstay a little. And now I'm beginning to experience some mis-shifts. Brand new it worked perfect.
...And I can't seem to retract the housing by pulling on where it enters the frame at the head tube. ...
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@dmsnova5 years ago Yo Danny what lube do you use for your training/racing?
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@barefootbob12693 years ago Had a similar problem but I was able to cure it. While I know it is a bit unconventional it worked for me and a friend. I gave the derailluer a slight low gear bias. Basically what I did was use barrel adjuster counterclockwise a few clicks so when looking at it from the back it is very slightly favoring the next gear so the guide pulley is a bit left of sprocket. My shifting is great both ways with no jumping. The only thing That I think I noticed was it seems a bit slower going into higher gears but not enough to cause any issues. ... 3
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@LaMartiLoca5 years ago can you please review the sram SX??? THANKS FOR THE GREAT JOB. 2
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@rojors5 years ago Just wondering. I have big nine nx edition small size. I want to change the set up into aggressive like changing the travel higher of the fork, short stem, higher rise 780 handlebar and 27.5 wheelset. What are thoughts about it? ...
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@iliapermiakov87945 years ago There is a play in the shaft/bolt holding rear derailer into hanger. B-tention screw is rotating derailler around this shaft/bolt. You can feel and see backlash there, when trying to woble entire derailler by hand in the direction parallel to the rear hub axle. Sometime there is enough backlash to overshift., when derailler jumps down. If you will fix this backlash - you shifting will be way more precise. ... 3
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@xsiemprexvida5 months ago Hi mate i saw you change the nx for "new gx" what its your humble opinion of the performance? Better than xt? Thank you!
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@christianllano79884 years ago Hi.
Thank you first for your videos ...
I have that group too but now with 500km the four big pine nuts make a noise like tik ... />Someone has passed, can you help me?
The transmission is perfect, it is only that noise and in the store they do not find it ...
Thanks greetings ...
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@bruniobr5 years ago have you verified your derrailleur hanger? seems a bit more open on the bottom, it doesn+t seem parallel to the hub/cassete
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@maurolocatelli58364 years ago Going down shifting can be faster and chain has more momentum. I took the shifter apart, and problem cannot come from the shifter mounted on the handle bar. Also, going up, distances between upper pulley and cassette should shorten a bit, while going down normally the upper pulley shall suffer a small gain in distance that might provokes more play. WHat do you think? ... 2
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@michealcheesbrough25494 years ago I've got the sram nx eagle group set on my cube acid 2020 not had that problem at all
no chain drop no gear slipping at all and done 6,0000 miles on it
but did change front charring to a 36t and kmc black and gold chain
never had a problem hope this helps guys P.S get your group set serviced once a year
at your local bike shop. ... 3
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@maniac20114 years ago I've seen this lately on an older xtr 10 speed. It really feels like: when the shifter can do several gears in one pull it has a tendency to overshoot the first click but not all the way to the second click so the chain passes two cogs and immediately fall down one to the proper cog. Is this the same thing? ...
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@ernestdeak84025 years ago My nx 1x11 did the same, after I have bent the nx derailleur I have upgraded to gx which still does it occasionally but I have always thought that I cannot adjust it 100% correctly 1
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@andymulholland20703 years ago hi , ive been struggling with the same downshift issues for 2 years.... sooner or later the problem starts and the shifting coming down the cassette become unreliable.. its been back into the shop ...had the derallieur changed and then upgraded to a GX but the problem is back again...there is something not right about the geometry of the mechanism when it gets a little use... ...
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@NDemanuele14 years ago Useful Video!
I have this same drivetrain and it's still pretty new.
The other day I was riding my bike through a chunky ( roots, ruts, rock garden...) descent.
I'm pretty sure the chain dropped in the cassette from one gear to another. Is this normal on
technical sections, or it shouldn't do so?
I was looking on the SRAM site for an owner's manual but didn't find one yet. I'm curious if I can
adjust the clutch? Maybe this will resolve the issue? Please advise. Thanks. ... 1
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@orangejuicepony68815 years ago Mine was throwing the chain off the 50 sprocket occasionally, have dialed the limit screw in a touch seems better, I suspect I have also had over shifting as sometimes you shift, it doesn't, then does so twice. I have tweaked the tension on the cable but not sure it its gone yet. ... 1
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@pinoyonline73162 years ago i have encounter that issue....what i do is put a small spacer between the 9 and 8 cogs just a thin spacer because the distance between the cogs on that gap is much smaller than the others....hope if will help 1
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@GC-Christ.4 years ago Could it be the gap adjustment between the top pulley and the cassette?
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@rogerthompson20053 years ago Ive had my mk2 GX derailleur do that - is it s set up thing?
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@reneh.65515 years ago So... when you cross that point of certain amount of miles / kms and it starts skipping cogs... What to do? I guess some parts worn out and might need to be replaced... but which parts? Cable, cogs and/or rear derailleur? 1,000km is just 6 months for an average weekend rider. ... 1
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@Mobimanie3 years ago Is the derailleur causing it or the shifter... Maybe a GX shifter fixes the issue already... 1
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@mojoeg303 years ago same thing happens to me on sx 1x12. on the same gears too! I was thinking my hangar was bent because my new bike (Giant stance 29 1 2021) Came upside down in the box. I work at a bike shop, so I'm going to check the alignment of my derailleur. I'll bet that there's nothing wrong at all though. ...
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@Bangbangboom513 years ago It's been 2 years by now. Have Sram fix the issue with the overshifting problem? Thanks 1
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@franferri4 years ago Could be the tension of the cluch is weak, I have a new bike (less than 10km) NX and same issue, when pushing hard. I think it could be related with the tension, and I think there is a screw to push it hard. 1
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@BikeFriendlyTexas2 years ago Given the amount of spring tension on these SRAM deraileurs cable housing pull through becomes a problem quickly. Pull through allows the tension to drop (causing over shifting) and then come back to tension (returning to proper gear). Cable housings are a wear item and should be replaced as they wear out, especially on newer 12 speed rear deraileurs where tolerances between gears is measured in fractions of a millimeter. Shimano XT, Ultegra, Deore, etc. all do the same thing as housings wear out. Housings are cheap, change them twice a year and you'll be fine, especially if you ride a decent amount. ... 2
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@TheOKapal4 years ago I've got the SX and it's been the same. Still, after 1000km, I'm still hearing cranky noise even after some adjustments. The overshift was happening from the start, too. I was worried as it was a new bike and had this kind of problems. But overtime it got better. ...
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@etischer2 years ago Seems like B tension needs to be adjusted, the jockey wheel is too far from the cassette to accurately position the chain. 2
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@knife_party16125 years ago Yes I encountered that problem also. How can I fix it??
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@rallyps4 years ago The main failure from NX is the B Bolt that wears because didnt have bushings like XX and produce lateral play. 2
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@zxtenn5 years ago Danny--i have a 2018 Canyon Spectral with GX and now when I back pedal on the 50 tooth sprocket maybe 2-3 revolutions the chain jumps to the next lower sprocket, only happens on the 50 tooth sprocket--suggestions????? 1
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@germangiuliani93824 years ago Hi. When backpedaling on the lowest gear on my SX the chain drops into a higher great. Does that happen to your derailleur too or is that a adjustment issue? Thank you !!
PS: Thank you for your awesome videos :)
Will you be doing a SX test soon? ...
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@doncastillo28183 years ago True happens to me on my 12s sx so weird 3
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@kimcenholt5984 years ago I have the same problem with my gx eagle. It has not gotten better after I changed cassette to sunrace cassette (run with 10-50 cassette XD body) 1
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@BatFastard013 years ago Thanks for the vid. I had perfect shifting then overshifted and snapped the chain. Replaced chain, all other stuff good. Now cant get a smooth shift coming off the 50 tooth, but all other gear ratios fine?? 1
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@sootrattlerolloff-road14152 years ago My question is, is there an obvious consistent issue with the GX doing this crap? I just happen to have a new GX rear in a box for another build that I never started. May try to install that on the affected gravel-bike I'm having the NX issues with. Next Im'ma stick my gravel wheels on my $6,000.00 enduro that has 170 mm travel and redneck that sucker around town...I do more urban curb-crushing than down-hilling! I've never had a hiccup out of that XT drivetrain!!! ...
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@shahmohamed91472 years ago I’m using sx groupset planning an upgrade to gx groupset, does the gx groupset will have this issue?. Or should go for shimano?. 2
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@michaelphilipvilla65954 years ago Had the exact same problem with my nx. Had the rd hanger realigned and the problem went away. 2
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@rodelschannelph40714 years ago Just index it or check the limit screw that happens some times 3
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@clemensklosterer13425 years ago I have the same one on my ghost lector and i think its cause the shifter whitch you push for the heavier gear gives you no fealing its just klick and works so fast das this klick is sometimes just to fast
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@veejayzee17502 years ago It happened to me as well, but in the 8th gear on my GX Eagle. I fixed it a bit by resetting the mechanic's tuning its still there but not happening as much.
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@esinduhije15 years ago Best review as usual, and I had just ordered the NX, then it's the cheapest,
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@ortodontiaespecializada92834 years ago Been using for over 350km no issues! It’s a question of fine tuning... Maybe the stiffness of pricier groupsets prevents that from happening as sooner as it did on your bike... Really satisfied so far!! The price jump from the NX to the more technological is huge!!! ...
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@nelsonrubiano71024 years ago Having a full SX set, I can confirm that I experienced the same problem from day 1. I got a new derailleur under warranty, and the problem didn't change much. After about 6 months and less than 800 miles, the clutch came apart in the middle of a ride. Now I decided to upgrade, but I'm split between GX or X01 derailleurs. Any thoughts? ...
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@bobsoon6664 years ago Hi,is it possible to use Shimano XT 12 speed cassette with GX eagle 10/52 RD and XX1 chain?
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@leventevarga2635 years ago I have the same problem with my shimano xt m8000 sgs rear derailleur. Can somebody help me? Please (it’s for sure that the problem is not connection with the tension.
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@sretenzivkovic69645 years ago Derailleur hanger could be bent. More speeds, more prone to slight imperfections. Cheers mate, keep good videos :) 3
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@foxhound1434 years ago I experienced this with my xx1 dub eagle group set, I tried everything even buying new cables but the problem still persists. I sold my xx1 eagle and bought the xx1 eagle axs and now the shifting performance on my bike is 👌🏻 👍 👊🏻 ...
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@alexmocuta4605 years ago I have an XX1 groupset(11s) and never had a problem like this(still original componets on the bike)
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@totoxahc4 years ago Hi, have you found any solution or workaround?, my bike is almost new (6 months, not ridden much) and has this problem 1
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@justinh12584 years ago You need to rotate the cable barrel adjuster away from you a couple notches. Check limit screws and b gap, make sure the derailleur hanger is not bent. I have never had this issue with my NX group set, GX group set, or X01. 2
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@Asthbendriel5 years ago My Wife's SX Eagle is dropping the chain 4 gears when you try to backpedal even 1 crank rotation on the 50T sprocket, this is not happening in my Shimano SLX 1x11 drivetrain, which also has an 11-50 cassette and I can backpedal even 25 rotations without a chain drop. Is this normal for the Eagle groupsets, or is it just poorly adjusted? The owner of the bike shop insists that this is quite common and there's no fix for it. ... 6
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@alpinemarmot35033 years ago I have same ptoblem. Definitely leaving nx... 1
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@ajmtbrides86755 years ago I have these movement on my m6000 rear derailluer but i dont experience overshifting.
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@AdriNat1015 years ago I knew something was happening but dident know what. Now i know. Mine has over 6000km. Thanks.
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@vladhritcu3095 years ago After 200 or so k, i'm experiencing the same problem with my nx 12s cassette and slx derailleur. Everything is brand new and aligned properly so i do suspect de mech cage alignment to. I'm trying to solv the problem by changing the slx mech with a brand new xt 12 speed mech and se if the overshift goes away... ... 3
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@MirelRC3 years ago Does it still have the same problem? I was planning to upgrade from a 3x7 to 1x12 sram sx. 1
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@CarlosGonzalez-ib9bc5 years ago I got a brand new mountain bike with less than 200 Km on it with the NX, having the same issue, It was driving me nuts, a bit of tweaking and made it better but not perfect. !!!!
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@Remmie19772 years ago I have a problem whit the nx overshift on the lower sprocket(10) end than my thain stuck end damage my frame 1
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@sallyschildcare5 years ago My first 3 NX rear mechs all got stuck on the 50.
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@rockbrd15 years ago How about the GX Sram 10 by 50. Any problems .? Thanks if you can respond
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@DimitryGobbo5 years ago I have a problema with my NX Eagle too. In this "middle" gears, when I´m going up the cassete it simply gets lost and keeps changing up and down.
I've checked the cable tension, lub, clened the chain. My groupset is even newer than yours (less than 1000km).
Hanger is fine, it was checked the B distance too. ...
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@scottamolinari2 years ago Yup. This is still happening. Just got a new Scott eMTB (Strike 903) with the NX derailleur and SX shifter and it has happened to me. As a novice too, it was a WTF moment and I've already started to look for alternatives. My first impression is to change out the shifter. I'd like to go to the X01. What do you think? My other thinking is to actually switch to Shimano. My son also got an eMTB (Haibike Nine 9) and it has the el-cheapo Shimano, but even I can tell it shifts better, especially under some load (yes, I know, don't shift under load, but sometimes it just isn't avoidable). I still don't understand why SRAM is considered still a better choice over Shimano. ... 1
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@natanaellorenzi55 years ago Did you try to replace these pulleys by bearing pulleys? Maybe the guide pulley has a lot of play. Maybe you should try a slx (m7100 12s) trigger and derailleur on this cassete and chain and bring this information to us.. Hahahha ... 1
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@justcallmejob39764 years ago My SX is jumping also while changing, even the mechanics can’t even fix it 😔 any advice pls. 2
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@martinbila5 years ago There is a faulty design or "feature" of NX rear derailleur - put the chain off and you will recognize, that there is a play between the derailleur and its fixing bolt on hanger.. Maybe that is the reason of faulty shifting to higher gears. ...
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@JuliusHiiden4 years ago I installed my new NX derailleur today and noticed somewhat roughness in the middle range of gears. 3
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@BearBoyBebenth2 years ago My nx has been used for a year noe and it doesnt over shift or chain jumps
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@GingerPhotographer5 years ago I have the same SRAM NX Eagle but the problem I'm having is Shifting down from 1 to 3 sometimes the derailleur does not move enough to shift down it stays on no:1, any ideas?
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@FelipeLuizDickmann5 years ago Hi, why do you use "resin pad only" rotors? Those oem rt54 are pretty lame. Upgrade to rt64 or even ice tech, you will definitely feel the difference in modulation. I upgraded from rt54 to rt62(older model, not resin pad only though) and I got a much smoother and also stronger brake. These cheap "resin pad only" are junk, after long downhill they squeal and warp badly. Too soft. Let me know what you know maybe a video about rotors? Bye ... 2
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@vladhritcu3094 years ago I have the same problem with Shimano slx 12 speed. I checked everything from wheel alignment, hanger alignment, cable, inner cable wear, shifter, but I think the problem is the excesive play in both pulleys, pivot points, the whole thing. I even aligned my derailleur hangar 3 times, massage my cable, inner cable, but nothing. They were meant to be a headache. I think the solution to the problem is replacing them with mid level to Pro. ... 1
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@franekol4 years ago Same here...NX sometimes overshifts on middle cog gears. Moved to X01 and its the same...maybe not so often. PS RD hanger is aligned.
Also had one chain drop on NX going to the highest gear ...although limit screw was set ok. It was during downhill.. ... 1
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@samlewis42835 years ago I have put 1300 km on my Trek Roscoe and NX does this. I have learnt to live with it though, and it doesn't really affect my riding. I still think it's a great groupset for the price. I'm picking up a new mountain bike with GX, so I will be interested to see if there's a difference in quality ...
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@logank.51985 years ago cable stretched? If its only when your going down the cassette, back out the barrel adjuster a bit.
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@cosmin.a5 years ago Maybe you have to turn the shifter's cable half turn one way or another to tighten or loosen the cable. 1
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@tristandesade86355 years ago I think the problem is with the cassette getting worn out. It happens in the middle cause most of us spend the most time riding in the middle of the cassette. 1
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@RumpStumper5 years ago Its not a issue with the NX, Check your Setup. Increase your cable Tension just a Little Bit and that Problem is gone. 20
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@mauricioiwayama10135 years ago I got my NX Eagle chain snapped after 216km. Many links were cracked. The whole groupset is new and came installed on my cannondale fsi 5 2019. I was upshifting to smaller cogs and I believe had the same issue during the ride. Ordered a replacement in warranty but I had to order a new GX chain in the meanwhile. ... 1
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@flaviomarzocchi74443 years ago I have the same problem with nx eagle 12 speed. And it is very slow to shift into the highest gear.. 3
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@minras4 years ago Same with Eagle SX, after 200km stops working normal, tried all thinks to fix nothing helps, on stand it looks OK but after few km of riding ... problems again :), replaced with Shimano deore 6100 RD only and it works like a charm no problems at all. ... 3
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@Robinators5 years ago Same issue here, NX 1x11. after 10000km,
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@ius89985 years ago Hi. Here with my XX1 rear deraileur , cassette and XX1 shifter. When I had to change the cassette I did it for the GX. I have never experienced this problem, the change has always been precise. And I have more than 10,000 km using it in my BMC ...
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@GamingChannel-du4ct5 years ago which are this brakes
shimano deore or...
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@juffkasvennsson46092 years ago Can i use this casstte with my shimano xt 12 speed derailleur and shifter ?
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@painfreemovements4 years ago I had same problem yesterday. It was cable tension. Exact same problem for me. I had to unscrew cable at the derailleur and then tighten then one rotation back on tension adjuster at the front then redo everything and worked on fine tuning tension and it works well now ... 1
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@cyclingheaven90273 years ago I want to that nx cassete black colour is not good
In my new bike I just rode 300km and in some parts of cassete black colour is removing
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@johnjosephryan38462 years ago Happens on new Sram GX groupsets also, horrible over shifting and also have to sometimes press the shifter twice to get it to move down the cassette. The b-tension bolt is also pressing against plastic which Gets cut up after a few turns. Pure garbage! Will be switching to shimano next time ...