How To Upgrade To A 1X11 Or 1X12 Drivetrain! | The Ultimate Single Chainring Conversion Guide

Upgrading your bicycle's transmission from multiple chainrings to a 1x drivetrain system is a great way of simplifying your bike, reducing weight & adding some easy performance gains! In this video, Doddy runs you through some of the technical differences, the benefits of changing your setup and provides you with a step by step guide on changing over your components to a new 1x drivetrain system!
In association with Shimano MTB - gmbn.tech/Shimano
⏱️ Timestamps ⏱️
0:00 - Intro
0:58 - Why go 1x?
2:32 - The 1x essentials
4:22 - Ways to convert to 1x
7:15 - MTB chainline explained
10:31 - MTB cassette setup
13:26 - MTB shifter compatibility
14:03 - MTB 1x conversion cost
15:19 - Installing a 1x drivetrain system
16:15 - Fitting an 11-speed drivetrain
17:28 - Fitting a 12-speed drivetrain
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Have you already made the switch to a single chainring setup? If so, when did you last use a front derailleur?
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[@gmbntech]

Have you already made the switch to a single chainring setup? If yes, when did you last use a front derailleur?

[@Silkl4sh]

I still got a Cross commuter bike with 3x9 system. Thinking of switching to cheap 1x10 1x11 with XT shifters as I don't switch from the middle chainring

[@wollfixx]

I've gone the other way few months ago. From 1x9 to 2x10. Way better on long XC rides. Thanks to bigger chainring more speed on flat surfaces and still the same ability to climb with smaller shift gaps.

[@jasonlewis6914]

I did but now I miss 2x I can definitely tell the difference between 1x and 2xt. The 2x much better top end torque

[@Silkl4sh]

@@jasonlewis6914 but why? I find 2x setup to be the worst of all. Switching eg. from 24 to 36T or 38T was quite disrupting and useless. I think the only reasonable front chainring choices are either 3x or 1x.

[@TryboBike]

I actually went back to a triple - with 3x12.

[@Fishpig65]

In 10 years the next latest greatest craze will be to add two more chain rings to the crank.

[@SK-iu2yi]

And run 26 inch wheels!

[@TheIainternet]

Doddy is the internet bike dad that every young MTB’er needs! 👍

[@gmbntech]

100%. Doddy always has the best information ready to go!

[@elgringoec]

Doddy... Because it's so close to Daddy! 🤔😯😂☮️

[@didiervaillant145]

Awesome video ! Honestly learned so much and I am now confident to make the move to a single drivetrain.

[@gzank6]

thanks Doddy, that chainline explanation is the simplest i've heard, i'll be checking mine now

[@StratosCoBManiac]

Finally, the perfect video I always searched and wanted to watch on KZbin! I've watched a lot but I was waiting for about a year to see a dedicated video uploaded on GMBN! I'm about to change my 2x9 Scott Aspect 950 to 1x11.(unfortunately I can only start by the crankset alone.)

[@clickireland1113]

20 years of experience well worth watching Thanks a mil, Very clear and structural and all us 1 x guys I'm sure appreciate it thank you

[@PachezZ]

I'm in the process of converting my 1x8 fatbike to 1x11, already upgraded from tapered square bb/cranks to hollow ones. Used smaller chainring, lost a lot of topend but I am quite happy with the lowend. Going to upgrade the rear end next month :)

[@peterjohnson450]

The best video explaining how to set up a 1x system.

[@mattkavanaugh5623]

Great video, instructions from Doddy as usual! I always learn something new watching your videos, thanks :)

[@gmbntech]

Thanks, Matt! We're glad you found this one useful! 👍

[@swcfuko]

Excacly all the infos I was looking for helping me to give my old Enduro a second life, tnx guys!

[@chmaximus319]

I am so impressed by the quality of content, production, the level of knowledge and how succinctly it is delivered. You have saved me so much time and frustration. Thank you.

[@ToolsNStuff]

This video was tremendously helpful. Thank you for taking the time to out this info together

[@Andrew-dm8mk]

At last the upload which was really needed 🔥👍

[@webnation212]

This video was incredible. Answered every question I had, PS I'm an old school pro bike mechanic.

[@Jacob99174]

I love these videos. Nice job, Doddy

[@gmbntech]

Hey Tim! Thanks for the support! We hope you found this informative! 👍

[@stevesnailfish]

Good tinkering video. I've done it from 2x on a CX bike and a gravel bike and from a 3x on an old 2007 GT MTB on bikes I own and regularly ride. Easy job for a home mechanic with the right tools....Getting a bit more expensive now with prices for parts getting silly... As for the square taper BB remover, I still have an old Park Tools one residing in my toolbox....It was used many times and borrowed here and there....I'll keep it as you never know....

[@R32SWEET]

So thorough! Great vid

[@peterweikel7123]

fixing to upgrade to a 1x11 on an entry leven specialized. the first few videos i watched seem to have over simplified it. your video seems to be a lot more complete. thank you

[@paulb9769]

I am doing the same to my Specialized I just orderd an 11 speed XT rear but kind of wondering if a 12 would have been a better buy. How did it go?

[@AndiPicker]

Great vid - I was looking at doing this to my aged 3x Hard Rock but I think I'll leave it as is so long as I can actually find a replacement for my badly worn and battered middle chainring .

[@Bikeaddict4235]

Saved , great explanation doddy 👍

[@elgringoec]

Very informative, well done video! ☮️

[@csmcghee830]

I switched from a 5 speed gear hub to a 7 speed derailleur. I’m glad I’m only dealing with a single chainring. It’s easier to understand what’s going on since I can see all of the moving parts (though the hub may have made maintenance simpler but I haven’t figured out how to deal with anything yet). I was able to five videos showing most things and didn’t have a lot of trouble making sense of things. At this point I might be able to understand multiple chainrings but I still prefer what I’ve got (though trying to ride the 75lb bike over hills is a bit hard).

[@drmoynihan]

I love my 1x12 on my Commencal Meta. So much so, that each time I get on my 3x9 hardtail every-day-rider, I dream of switching over. BUT - watching Doddy explain and demonstrate the mechanics is way beyond anything I will ever do!!! Thank you Doddy for this excellent presentation.

[@gmbntech]

1x12 has to be the best setup! That sounds like a nice steed as well! Yeah, sometimes working on your bike can get a little complicated. Doddy covers all bases, so if you can do a full drivetrain swap, you have all the information you need. Glad you enjoyed it! Thanks for the support! 🙌

[@user-cx2bk6pm2f]

The Mustache from Park Tool has great advice about tightening the rear hub locknut, suggesting a little looseness is preferred. If you get it too tight, you may see binding after the axle is eventually clamped on.

[@Brockthedog315]

Experiment with your current set up by using only one front chainring for awhile in the areas you ride. I like the middle one on mine which is 38. I use that the most when I ride anyway. I like the sound of the simplicity of a 1x but I already have this by doing nothing and not spending any more money. Biking doesn’t have to be so costly. Thanks for the video.

[@alenpetrusevski1083]

great video thanks doddy

[@gmbntech]

No problem, Alen! We're glad you found this one useful! 🙌

[@matt_acton-varian]

The older bikes I have with a square taper BB, I take it out and thoroughly grease the threads every year, even if the bike gets a few hundred miles dry use only. Modern design is definitely fit and forget until they need replacing altogether.

[@paulskinback717]

i have a haro mountain bike pretty rare its 21 gears ive never gone over 10 so im gonna go this rout wicked nice one mate

[@ilonaszabo4325]

Hi i have a Haro too from '09, pretty good condition, build for my nephew. Only the driveset is missing! I'm thinking 1x ...

[@vlbz]

Love those 370 hubs. Reliable, cheap, and you can pop out the freehub (tool free) if you are switching wheels/tires. Love them (ps of course the 350 is better)

[@KK-no7be]

Gave you a thumbs up for saying fewer instead of less.

[@Max-Power.]

Nice video 👌

[@branman12b]

Shimano sells the FH-MT401 and FH-MT500 which both have Microspline and are 135mm QR. The 401 has sealed cartridge bearings and an aluminum freehub body and the 500 has angular contact cup and cone bearings with an internal grease sleeve and a steel freehub body.

[@Avram1919]

Thank you! I was reading through all these comments to see if anyone knew of one. And the 401 seems to be only $55

[@alexp6409]

Seeing all the new bikes with their fancy, simple, lightweight 1x setups had me dreaming of converting my 2016 Rockhopper Comp to a 1x setup. No more chain slap - so simple, elegant and lightweight! But then I started reading all the pro-2x comments, checking into the cost of the conversion, and looking over the rest of my bike (with it's worn out tires, entry level fork with a ding in the stanchion, and old-school geo)...I don't think I'm going to touch it unless something stops working right. Great video though!

[@Jillaroo79]

I converted my 2X8 Shimano Alivio to Sram GX 1X12 on my Specialized Rockhopper Comp. It was totally straightforward following KZbin videos, shifts like a dream I love it. I personally would not go back to a 2X setup. Also the bike is now about half a kilo lighter than before.

[@saiiiiiii1]

Have a brand-new 1x12 XT drivetrain on my new bike and the shifting just feels awful compared to my 8 year old 2x10 XT

[@bigbang259]

i tried 1x12 and got back to my old 3x9. It doesn't cover the same range of gears, and i didn't have any problems with 3x9. The chain slip maybe 2 or 3 times during 8 years. I don't see any advantage of 1x except it's 400g lighter

[@mantelis9547]

For most common QR bikes you can choose Shimano FH-MT401 (135mm) for 12 speed system.

[@TheRst2001]

Thanks , there still sold , I looked around for ready made wheels with this 12 speed qr hub and couldn't find any 👍

[@mattgies]

Am I wrong, or did you omit the cassette from your weight difference calculation? That's the one component that's always heavier with a 1X, because the sprockets get so much bigger to retain the same gear range.

[@Rawkus919]

Yeah, 12 speed cassette 650gram, 10 speed 380.

[@kosskrit]

@@Sidowse Yea, the reason behind conversion from 3x(2x) to 1x is to make things simpler and more robust, not to save few grams. I personally ride 2x10 on my XC and I use every gear ration I can.

[@mdr2465]

Good vid you guys dropped there. Ik did a 1x12 conversion recently. But i picked the sunrace 12 speed cassette. It fits the orginal Shimano body. And shifts at least good as the Shimanocasette from one off my Buddies. So no need to change the rear wheel/hub/body there. But i guess if you're teaming up with Shimano for this vid, that couldn't be shared😉

[@flexxx222]

There is one from SRAM that fits the og Shimano as well. 12 speed NX Eagle PG-1230 is the parts no.

[@vazza69]

@@flexxx222 Yeah i'm running that with an XT derailleur and GX shifter. Love it

[@Ruaridh_ONeil]

Thanks Claire 👍

[@goedelite]

I bought an inexpensive mountain bike from a large retailer. I paid less than $100. for it in early 2022. It has a a 26" wheel, alloy frame, front suspension, and was equipped with a 3 x 7 gearing. Living in flat Florida, I saw no need for the front derailleur, and when I found a problem with it I simply removed it. I did not find any problem with it as a "one-drive". The chain does not pop off the 3rd (largest gear) gear of the three. I removed the twist adjuster on the left side of the handlebar with no problem. No change was made to the pedal bracked gearing. Only some minor adjustment of the rear derailleur might have been required. I don't recall. The adjustment might have been simply to set the rear wheel's high gear (smalest gear) chain position to its innermost so that the chain would not slip off the right side. Seven gears are more than enough for Florida's mountains! It is a shame that so-called "cruiser" bikes have no suspensions from the frame. Biking on the sidewalks is almost as rough as riding the rocks!

[@tonychambers6275]

Don’t you just love Shimano, the way they sort things out and make things compatible

[@970SHARKO]

is this genuine or sarcastic i cant tell

[@freespacexl]

Great, comprehensive and too the point! Thanks for the tips. Could you please add links to the recommended products, do you have a storefront? (Edit: storefront)

[@GokkunGuru]

Great video. I did my 1x conversion in Spring/Summer of 2020. Wouldn’t ever go back to anything else.

[@gmbntech]

Thanks! 🙌 We're glad you're loving the 1x life! 😅

[@medicoremedic2962]

I have a 2008 Specialized Rockhopper that I beat pretty badly the last few seasons. So much I snapped the chain and noticed I have some tweaked sprockets in the stock SRAM 3x8 drivetrain. I had wanted to convert to a 1x, but now the busted chain has given me more reason to do so. When did Micro Spline hit the market? I'm pretty sure I have the older style hub, they are Specialized labeled hubs. I'd love a 1x12, but I'd take a 1x11. Love these videos explaining all the intricate parts of disassembly, reassembly, maintenance and all the rest....great job! I do have a question about rider weight. I am 285 lbs and I know extra weight may add extra wear on the components. Is their a better drivetrain for said fluffy rider to change gears on climbs without snapping parts?

[@alfrednOObel2]

All my bikes are 1x (1x12 Shimano ful sus, 1x12 SRAM hardtail, 1x9 Shimano gravel'ish and 1x1 commuter) and It's the best invention in the bike industry! Front mechs were just an annoyance. With 1x drivetrain I can focus more on what's important - choosing the right line, giving my best effort, and enjoying the ride instead of constantly thinking if it's the right moment to shift front or rear and paying attention not to drop my chain.

[@Moerkbak]

@GMBN Tech - you seem to forget the "bastard" often used on entry level bikes, namingly the boost QR (141MM)

[@canaljc6713]

Easy instal and works well

[@DamianNocun]

Another great video! Well done. I'm curious, did someone count amount of chain links used for system 10-51 and 32 in front ? Basically need to confirm if I correctly set length of my chain :) Bike is a hardtail, Trek Procaliber.

[@petershouts723]

Still ride a 3x9. Big ring to the trails, middle ring in the trails, and small ring on the steep climbs. In between I use my right thumb to shift when things get hard and my right index finger to shift when things get easy. What could be less complicated?

[@SweetDewMe]

Great video. Where did you buy the wheel? I’ve been having a hard time finding it with 135mm width

[@boostaddict_]

I currently ride a 3x7 drivetrain from the mid 90s lol. I ride it like a 9 speed. 1x1,2,3, then shift to 2x3,4,5, then 3x5,6,7. Smooth chainlines, wide range.

[@iwontreplybacklol7481]

Yea, I got a bike with a 1x thinking I was 'stepping into the future'. Feels like I went backwards ! ! As soon as I wear out this 1x, Im switching to a 2x.

[@madmax2069]

Yeah, I have a 3x8 (22/32/42, 11-34) and pretty much do similar. As much as I don't like a front derailleur, I can't go to a single chainring.

[@mugsy13045]

thanks, for myself, very informative and had the important information I needed to turn this giant bike frame into a custom build. My first top end bike build, gotta have a 1×11, w 10-51, what rims would you suggest, rear drop out is 134mm on the frame.

[@rjukan79]

I’ve built a hardtail on shimano XT with 2x 12 ⚙️ I have also new canyon neuron cf9. Much better with 2x…

[@gmbntech]

Oh nice! What reasons do you prefer the 2x setup?

[@pakusssoohmnpe6646]

is it chain line?

[@brandonreimer184]

I preferred the 2x on my old bike for trails with steep abrupt climbs, where dropping 1/2 the gear ratio with one click was beneficial. However i find the 1x setup i run now to be far easier to keep in perfect working order.

[@DocHolliday3841]

@@gmbntech 2x is better for climbing, going from a 2X down to a 1X & calling it an "upgrade" is an opinion & not one I'm fond of. 2X & 3X Rule

[@stevecrump1375]

Here in Australia ive had trouble even getting a 1 x groupset. ....

[@filippinguiden5619]

I got one 1x11 bike and one 2x10 and I can’t say that I prefer the 1x system. There’s a lot more shifting gears and not very healthy chain angles.

[@loomspace]

And broken chains.

[@iwontreplybacklol7481]

Agreed. I have a 1x because its a fad and was the only setups I could find locally, but as soon as I wear it out, I will be switching to a 2x for sure.

[@matthewowens6550]

When I changed my hub and he warns about the shallow grip. Yeah my had been on so long I had to use a dead blow hammer to knock it lose lol. The first owner never serviced the hub. Had to use a dremel and cutting disk lol

[@bobothericefarmer1878]

Needed this

[@gmbntech]

Hopefully it helps BoBo! 👍

[@TommyBlazeHD]

I need to watch this again. There's so must to take in! I want to convert to a 1X system on my 2016 Trek Superfly. I currently have a SRAM GX, 10 spd with a Type 2 rear derailleur. The crank rings are SRAM GX 1000, 36/22 with a PF89.5 bottom bracket. What do I need to convert to a 1 X? According to this video I will have LESS gear usage if I just get a new front main Chain ring. So does that mean I need to replace my 10 gears with 12 gears, and a 12spd shifter, plus new chain..??

[@UpsideDownFork]

This is an excellent video but as a layman, it seems overwhelming to know where to start. I want to convert my Calibre Rake to 1x. Looks like I need to do a lot more research yet!

[@mathiasfaber3101]

You just SAVED ME a expensive mistake, I am doing a conversion to single chainring as a birthday gift to my brother and I was about to purchase a 12 speed setup🙄 I wasn't counting on getting a new hub.

[@gmbntech]

Glad to have helped out! You could still change to a 1x set up for the current speed that you're on?

[@mathiasfaber3101]

Not yet, I'm waiting for the parts I've ordered. Hope that are the right ones. Now it's a matter of waiting and not screw up anything😅 🙏Thanks for the guide !! 🙏@@gmbntech

[@mushtikla1]

Thank you, this is really helpful! I'm at the chain line measurement part and just have some question! But first to explain what I have and what I'm trying to do... I have a Shimano 3x10 and the chain line is 50 mm for the crankset, which is good because the rear hub width is 135 mm, so the math works. So, I wanna go 1x11 (11/51), and I can unscrew the 3 chain rings in the front and replace them. And I found a 32T narrow/wide ring that fits the 104 mm holes. So my first question is, when I remove the 3 current chain rings, how do I space the new ring so it's at the 50 mm chain line? I'm assuming it's not gonna be there when I remove 3 and replace it with 1 and assuming it's gonna be narrower? Are there some spacers to put in? Found a great deal for the whole rear upgrade kit set - cassette, derailleur, chain and shifter for 135 EUR! Shimano Deore M5100 for the whole thing. I also found the same Deore M5100 crankset, but it's a 52 mm chain line, I can't find a 50 mm one! :( Would that be a huge issue or should I try to fit the 1 ring on the current crankset? It's actually not that big a difference in price between buying just the chain ring and the whole crankset, but I'm worried that 52 mm would mess up the shifting and everything, going by the numbers of everything else! Your advice is much appreciated! There is a site that has awesome discounts, its called bike discount . de. Not sure how it would work with the UK/import taxes/etc, but I think it's worth a look! All the best, and thank you for all your awesome videos and tutorials, it's a massive help for a noob!

[@paulb9769]

I think you well over estimated the weight savings.

[@treimar]

You can even pop a 12 speed casette on a 9sp hg hub. But for that you have to go aftermarket.

[@baronvonrichthofen2021]

Question: in the video it seems like if going for a different system (hg, micro spline), the suggestion appears to be to get a new wheel. How about changing the hub itself? Is it possible to change the hub from a hg to a micro spline with a 135/5 axle?

[@ChadSextoid1]

How is the chainline measurement determined? In other words, what is the proper way to measure the rear hub?

[@sgoaty]

You mention spacing out the chain rings when fitting a single chain rings in place a multi set up. How would you go about that?

[@Metalshark100]

currently use a 2x xc bike for commuting but switching it for a 1x hybrid, no hate on the 2x and I really enjoy the gear range but I prefer the simplicity over the gears.

[@SurpriseMeJT]

When I converted to 1x, I had less gear ratios and it became harder to climb hills. At least my bike is simpler, right?

[@Metalshark100]

@@SurpriseMeJT fair if you actually need the lower ratios but i never ever use my 46T cog at the back so there's no need for me to have that many gears. I just need to climb short medium hills and need quicker gears for flats. Less drive train components just means less effort cleaning and less maintenance.

[@iwontreplybacklol7481]

​​​@@Metalshark100 so, one more chainring is 'much more maintenance'? Lol front derailleurs are so damn simple, I have a 20 year old mountain bike that Ive tuned up the front derailleur twice on...

[@tonymartino7892]

Thinking of fudging the chain line toward the biggest gear a little bit on a 1x11 to get a straighter line in the highest torque position. Good idea?

[@wozukleeds9018]

I'm wanting to convert my Ridgeback Hybrid bike with a 3x8 (square taper bottom bracket) to either 3x9 (sora) or 3x10 (Deore, Tiagra) with a hollow bottom bracket set up. I'm concerned, though, about fitting the hollow BB, and if spacers will be needed. And if any spacers added on the drive side will mess up the chain line?

[@AdamQueen]

Simply going 1x won't really save that much weight, Much larger cassette easily outweight the saving of a front derailleur. Especially if any roadie is considering such 1x conversion. The clutch derailleur + 40t cassette + 38/40t chainring easily eats the saving of a Di2 front derailleur and 34t cassette + 50/34t chainring. Not to mention the worsen chainline with extra noise. The real benefit mostly comes from the wide-narrow chainring, and easier maintenance.

[@The_Real_JN]

It does save a lot of weight tbh, not just the weight of the derailleur but less material on the cranks since there's no 2nd mount, only one chainring and 1x cranks tend to be hollow so even lighter

[@kosskrit]

@@The_Real_JN or you can make two sips of water from your bottle and the weights of bikes then equal. I dunno, weight saving on drivetrain is expensive. It is better to buy better tyres and wheels. I saw nice article about weigth_save/price ratios of different bicycle parts and tyres (at least in mtb) have the highest ratio of them.

[@The_Real_JN]

@@kosskrit oh yeah don't get me wrong, changing tyres is the first thing I did, plus going tubeless saved more weight. I guess I've only really noticed it on the drivetrain

[@wayofwhite449]

Really nice! But really expensive method :))

[@joshdom9116]

how about 141 Qr boost rear hub spacing? can i also use a crankset that is also designed for 148mm rear hub spacing?

[@Axel-xl2vh]

If I have a 3x8 and want to change to a 1x8 do I need to get a new chain if the chain ring is a narrow wide?

[@davidluke1795]

Great video. I went 1x after crashing my cube stereo, breaking myself not the bike. Smashed my left thumb. Moved the dropper post lever to the right. The bike was a 2x11 with shimano XT clutch mech. Have now fitted an Absolute Black Oval concave chain ring. Never looked back. Slick gear changes, very little chain slap, climbs like a goat.

[@mikemolenaar8380]

Did you still use the XT 42t cassette on the rear?

[@davidluke1795]

@@mikemolenaar8380 yep still using the the original cassette 42 tooth on the rear.

[@paulb9769]

What size ring?

[@davidluke1795]

Yes still using original cassette on the rear.

[@davidluke1795]

@@paulb9769 the oval ring is 34 at the highest point.

[@WhatsMyNameAgain93]

How would I go about changing from a 2x8 to 1x when all I use at the minute is 2nd up front and 4th upwards on the back? It seems the focus is always on keeping the lower end but I only use my highest gears

[@reynerlara5353]

Great video. I have a 3x10 cannondale hardtail 135mm Qr, my crankset is a fsa. I need to buy just the 32 ring, my is 104 mm. Which should i buy? 3mm 6mm or 0mm ? Please help. Thank you.

[@smithy1011]

I have a question about my road bike which I haven’t found a answer to online yet …… I have shimano 105 and I noticed today climbing the mountain that I don’t have a low enough gear compared to many passing me and my quads literally seizing up a 8-10% grade. Also I’m using shimano SPD SL pedals and I’ve maxed the distance of foot width and my outside soles are hurting and my knees are to close together…what parts can I use to help widen pedal width on my Giant Contend SL 2020 bike

[@JoeBob79569]

So, on normal bikes with multiple chainrings it's recommended to keep the chain as straight as possible, like not having the chain on the smallest cog at the rear, and the smallest chainring at the same time, and alternatively not having the chain on the largest rear cog and the largest chainring at the front. I've heard it said that it puts stress on the chain and could cause it to break. So, why is it OK to be on the same single chainring at the front when you have 10-12 cogs at the rear? Isn't the chain even less straight in these circumstances? Are single chainrings made differently? Or is it because of the front derailleur?

[@richardloh8260]

Shimano cs-r8100 cassette with 12 speed conversion without needing microspline hub and existing non 12 speed rear wheels just in case missed 🙏

[@SD_Marc]

I plan on converting a 90s MTB to a townie, and I don't need more than 8 gears. As long as the chain line is right, can I still use the existing rear cassette/derailleur?

[@nebnollock5198]

One thing to mention is that sram have there 12 speed nx drive train which can fit on a hyperglide freehub body

[@larsweibel6192]

And with sram you don't necessarily need different cranks for different chain lines. you can change your chainring, that's way cheaper

[@pakusssoohmnpe6646]

but there's no 10t

[@laurradu868]

This was a Shimano sponsored video :)

[@exotix9259]

Doddy I have a 2012 giant trance x4 and it’s running a 2x9 setup right now and I’m looking to upgrade to a 1x11 what would I need to buy to upgrade?

[@milanbetz1255]

Usually the new derailleur and shifter come with a new cable. Is there any reason to use this new cable, or can you just use the old cable and keep the new one as backup/spare?

[@lbraga565]

hi I have a old trek i am looking to convert to use as a trainer. IS there a parts list anywhere here or a how to vide on how to upgrade all this?

[@levifulop7283]

If you round it it is actually 536%😃,Doddy

[@magaman6353]

Plus it's a whole lot easier cleaning than trying to get at every nook and cranny in the front derailleur in bad weather.

[@Levente2]

Hello ! I have a beginner question. Does the Crankset come with a bottom braket if a buy a crankset ? For example if i ordere a Deore Crankset does it come with a bottom bracket ?

[@SmartfoolGB]

Can you go for a bigger chainring on a 1 by setup. Like maybe a 48 or 50?

[@jugaloo5873]

Bolt the bb tool on.

[@raffaelececchinato1310]

Can i use a freehub shimano spacer behind the cassette to move it outbound and so adjust the chainline instead finding a chainring with built in spacers?

[@Motoch3]

Any issues of 12X width fitting in the swingarm since it is wider?

[@webster169]

I’m still confused on how to space my chainring to get the correct chainline, what is used as spacers and where are they fitted, also if you were keeping the old square taper bb is the spacing the same method as with the modern bb?

[@petesmitt]

Spacing a chainring is just putting spacers between the chainring and the crank arm or placing the chainring on the other side of the crank arm; with the old square taper bottom brackets, you can choose a different width bottom bracket to get the correct chain line.

[@user-cx2bk6pm2f]

Good man, putting a proper tube in the tire.. and not wasting your time with tubeless.

[@kevinoneal2728]

Has anyone found their existing derailleur hanger from a 2 x system angled out away from the wheel? It isn't bent, but maybe came this way stock. Well, when I attempted to align my new 1x11 derailleur, the limit screws couldn't match the breadth of the cassette...like it needs a straight derailleur hanger to bring it all in closer to the wheel. Thoughts?

[@josereneducharme142]

Going to 1by10 with larger rear cog on a 135 axle, I started getting back pedalling derailing toward the next smaller gear. My buddy with a142 axle also. Is there a way to cure this?

[@MP_Soundbox]

Can anyone recommend the best 1x setup for a hardtail with short,16" chainstays?

[@Robert-nk4ep]

So I went down the rabbit hole, and am now trying to get a working 1x12 SLX setup on my non boost QR frame (original rig was 2x10 Deore). Can anyone tell me if a 1x12 SLX drive chain is possible on a 135mm QR non boost frame? I still need to get the SLX cassette and microspline freewheel.

[@jeffflores8218]

Can you switch from a 1X to a 3X Without changing the rear gearing? Effectively boosting the overall gear range?

[@jedunboxing4127]

Why he didnt mention about the spacers on the bottom bracket?

[@virginiascurti5036]

Ok so you publishe3d this video a year ago and Trek Marlins 5-6-7-8 go 2x8 1x10 in the middle and 1x12 but I'm looking at the specs on the Marlin Hub and it list the hub as 135 mm using the SRAM Eagle SX groupset.

[@ongweikiong]

How do you measure the biggest chainring the frame can accommodate after taking out the 3 X cranks?

[@paulb9769]

I cross chain my 2x9 fairly often with out any issues. I like the smaller gaps and being able to drop to my granny when the going gets tough.