How To Adjust BROMPTON GEAR Hub and Derailleur Gears

Cables stretch, screws become loose...
And is time for a tuneup.
Click in the time line and go strait to your point of interest:
0:0 start
0:30 Diference between Hub and Derailleur
3:00 How the derailleur change gears
3:29 How the Hub change gears
3:42 HOW TO ADJUST THE HUB
5:41 A Hack to help you work in your Brompton
6:34 HOW TO ADJUST THE DERAILLEUR
8:32 Always remember this!!!!
CHRIS BY BIKE
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Edit on Samsung Note 20 Ultra with Kinemaster App
Film 2021.05.10
Edit 2021..10-13
My Brompton is a 2017 M6L Blue Lagoon with a 44T with NO fenders
Make sure that the linked product fits your Brompton model.
Here are some links to help you find Brompton parts
As an Amazon Associate l earn from qualifying purchases.
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Film with:
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My Brompton is a 2017 M6L Blue Lagoon with a 44T
Make sure that the linked product fits your Brompton model.
DISCLOSURE: Some of the links on this page are Affiliate Links.
As an Amazon associate, I earn from qualifying purchases.
Instagran:
chris.by.bike.brompton
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[@finncarlbomholtsrensen1188]

My Ligthweigth bike felt heavy, so I found a new set of specially expensive titanium nuts for my wheel, to make it ligther, as also my axle and the security parts on my fork! I wasn't aware of the adjustment ability for the small chain-fork, changing my two gears, so thank You! As a bikebuilder I of course have adjusted gears on my MTB and racingbikes, but this bike is very/extremely English in its being built! Finn. Denmark (My first and only BMC Mini had the + from the battery to the frame, unlike most other car producers, which hadn't got this brigth idea)

[@ChrisbyBike]

Hi Finn Carl Bomholt Sørensen I'm glad you like it! It is a small adjustment, but it makes a big difference on rinding your Brompton. Keep Safe! Keep Riding!

[@irkone537]

I was looking for a tutorial cause I don't know anything about the Brompton gears system ... By far the best video you can find . Clear and efficient . Thanks a lot from France ✌️

[@ChrisbyBike]

Hi Irk One In the beginning it looks a bit confusing, but with time we start to get use to the Brompton's logic and it gets very simple. Congrats for your new Brompton! It is a great bike, especially to ride in cities. Greetings to France!🇫🇷 Nice to have you on board!

[@borusa32]

Thanks so much-my new Brompton started to be a bit reluctant to change hub gears after 8 months.

[@ChrisbyBike]

I'm glad you like it! It makes the ride smother Nice to have you on board!

[@sheilastallard]

Was just listening to Peter Gabriel then...................Chris by Bike notification comes up!! So Peter you can wait a few mins whilst I sort out my gears!!!!!! Keep Safe Chris! Love from England x

[@ChrisbyBike]

Hope you enjoy it!

[@ChrisbyBike]

That's Cool!!!!Love it!

[@leongkinheng7680]

Thanks A Guru Brompton advice 😂

[@ChrisbyBike]

Hi Leong King Heng I'm glad you like it! Nice to have you on board!

[@leongkinheng7680]

@@ChrisbyBike I have change 12T and 17T chainring remain 50, tyre pressure 90psi, front was 80psi. The result was quickly range 15-23km ph , can keep the speed was 18-19km per hour easily, 1+was little heavy, 13T cog 1+ gear is lighter, 2- (12T) was easy reach 20-23km I try today, 2+ (12T) can keep the speed 17-18kmph , 2+(13T cog the speed was 14-16kmph. CHAIN MUST USE 7SPEED OR 8SPEED , I 12T-17T use 10 speed chain will drop chain , becos chain gap to far , is 13T-17T 10 speed chain no problems, accept the new Brompton P line and T line can use 10speed chain, both chain I use SUMC hollow chain 8speed (12-17) 10speed (13-17), this was cruising speed, not yet try climb the decent road,

[@leongkinheng7680]

I did not try 9 speed chain yet,

[@ChrisbyBike]

Hi @Leongkinheng7 They recommend the 8 speed chain. Is chipper and last longer. About speed, check out this video kzbin.info/www/bejne/pXrbY5uDeNd_ars That was right before I've replace the 50T for the 44T. I think for touring the 44T gives you a better gear range. Nice to have you on board!

[@leongkinheng7680]

@@ChrisbyBike thank Guru Brompton Chris share a tip

[@leejoycechung2162]

Thanks Chris for the info on the Brompton Gear and derailleur ...learn something everyday.

[@ChrisbyBike]

Hi Lee With time they loosen and we have to readjusted Nice to have you on board!

[@jag1870]

Great video Chris! I thought I was going to have to take my Brompton in for service because my bike was making a weird noise in 2nd gear. I followed your instructions and presto...noise all gone and all is well again. Many thanks!!

[@ChrisbyBike]

Hi Anthony G It is a great feeling of independence and conquer. It helps a lot to know this little adjustments. I'm glad you like it! Nice to have you on board!

[@blueyonder1233]

Always easy after watching your video's. Thanks for doing the hard yards for us! 👍

[@ChrisbyBike]

Hi Blue Yonder Funny you mentioned, but is true! After we know the way, life gets much simpler. It is always very Nice to have you on board! 👍🏻😊

[@andreivlahov9190]

Dear Chris, thank you so much for this fantastic video. i tried your tips and now my Brompton runs smoother. Apparently it was the cable tension. Thanks and keep posting your marvellous videos!

[@ChrisbyBike]

Hi Andrei Vlahov I'm glad you like it! Nice to hear that your Brompton is riding smooth. Nice to have you on board!

[@SingaporeUntold]

Nice. Very clear instructions

[@ChrisbyBike]

Hi Singapore Untold Channel Glad you like them. It makes a big difference on riding with nice tune gears. Nice to have you onboard!

[@retsbewwebster]

Thank you Chris! Very helpful and well done. George from Appleton, WI

[@ChrisbyBike]

Hi George Thanks Glad you like it! Greetings to Appleton! Keep Safe! Keep Riding!

[@nicolarusso]

Thanks for another great video!!

[@ChrisbyBike]

Hi Nicolas Colarusso You are welcome! Glad you like it

[@audrey3319]

Excellent, most informative, visually and verbally explained well. Thank you

[@ChrisbyBike]

Hi Audrey I'm glad you like it! It is good to know how to adjust and do some small maintenance on your Brompton. It makes a lot a difference a well adjusted gear. Nice to have you on board!

[@DavidJones-hb3ir]

Very good explanation, thank you.

[@ChrisbyBike]

Hi David Jones I'm glad you like it. Keep Safe! Keep Riding!

[@willyco2920]

Thanks Chris, this video was very helpful!

[@ChrisbyBike]

Hi Willy Co I'm glad you like it! Nice to have you on board!

[@PIPSGuy]

Again great n fun vid. Looking for more tips sis. W luv n big smiles

[@ChrisbyBike]

Hi FirMN I'm glad you like it. Nice to have you on board!

[@stephenh2761]

Hi Chris, I've learnt some more about my brompton, it's like the old coca cola advert,ide like to teach the world to ride in perfect harmony, then get a brompton. Have a good weekend.From Steve in Portinscale, England.

[@ChrisbyBike]

Hi Steve It is nice to ride with gears well adjusted. It makes a big difference. Greetings to Portingscale! Nice to have you on board!

[@davidclark1152]

That's a great idea, have one of those mini backpacks somewhere to use too. Look forward to your next video as they are always interesting :)

[@ChrisbyBike]

Hi David Clark I'm glad you like it. Love to share the things I learned. Keep Safe! Keep Riding!

[@EverydayCycling]

Nice hack @ 5:50 !

[@ChrisbyBike]

Hi Victor It is very helpful to work on gears. Learn this derailleur adjustment recently. In high gear I felt that my chain was brushing somewhere, but I didn't know where. It was the wheel touching the chain changer. Learning and learning 😊👍🏻 Keep Safe! Keep Riding!

[@annakaminska8321]

Very helpful. Thank you ❤️

[@ChrisbyBike]

Hi Anna Kaminska I'm glad you like it. Keep Safe! Keep Riding!

[@annakaminska8321]

@@ChrisbyBike After watching your channel for some time I finally bought my own Brompton and straight away gear problem. Your video made my day🥳

[@ChrisbyBike]

I'm very happy to hear that I could be of some help. Congrats for your new Brompton. Check out the Playlist TIPS AND TRICKS. Lot's of little tips to improve your Brompton ride Nice to have you onboard!

[@stevespence2918]

Nice video. I'd also add if the hub gear cable needs to be reconnected to the adjuster chain, start in gear 3 so the cable is longer, do up a few turns and then switch to gear 2 to do the actual adjustment. Steve, Yorkshire, UK.

[@ChrisbyBike]

Hi Steve Spence Well added. It makes even easier to reconnect the cable if the lever is on gear 3. Nice to have you on board!

[@ChrisbyBike]

Greetings to Yorkshire UK👍🏻🌟

[@terrylane4486]

thank you so much do you know realign handlebars as had a crash and out of alignment

[@ChrisbyBike]

Hi Terry Sorry to hear that you had a crash. Hope it is all fine. To adjust the Handlebar you have to loosen the central screw and adjust it so that it does not get in the way when folding the Brompton and is comfortable to pedal. Then tighten it to the torque suggested by the Brompton manual Nice to have you on board!

[@tantsits77]

Thank you so much for this video. I was struggling with my Brompton as it would not go into the lowest (easiest) gears at all. It was like I only had 4 gears instead of 6. I adjusted it like you showed and now everything is back to working. Saved me a trip to Brompton Junction in NYC and some $$$. Thanks Again!!!

[@ChrisbyBike]

Hi James Tantsits So good to hear that 😊👍🏻 I'm glad I could be of some help. Congrats! Keep Safe! Keep Riding!

[@evelynvega1730]

Hi Chris, very intersting! I'm saving all your videos in case I need to go back to them and learn from them. I just bought my G3 handlebar for my S bar and they tend to rotate, it is not grabbing that well the bar. what do you think i should do?

[@ChrisbyBike]

Hi Evelyn Can you send me a link of the product? On my ergogrips I had to loosen the breaks and gear leaver, and move them more to the center of the handlebar, to have enough space to titnen the out screws of the ergongrip. It did the trick. It is very important to have bar Grips with screws to fix them. Nice to have you on board!

[@chriswong2012]

Thank you so much for your help! I have one question though, I got my Brompton yesterday and I found that the 3rd gear is much louder and noisier than 2nd and 1st gear, while 2nd and 1st gear sounds similarly quiet, is that normal on a Brompton bike? If not, what would you suggest on the adjustment? Thank you!

[@ChrisbyBike]

Hi Chris Wong Congrats for your new Brompton🎉🚴‍♀️🥳 The gears have different noises, but it should be much lauder from the others. Try 2nd gear and see if it is adjusted properly. If the noise continues take to a Brompton store for a checkup. Good luck! 👍🏻

[@chriswong2012]

@@ChrisbyBike Thank you so much! I adjusted the 2nd gear accordingly and also listen to some of the videos that record the sound from different gears. I guess that ticking sound is normal and special with brompton bike. I also went to the shop for a check up, they agree with that too! I just feel a bit weird with those noises at first as it sounds badly tuned gears on road bike. But now it becomes an enjoyment and signature of Brompton hub :) Thank you again for your video and reply. Very good channel for Brompton bike owners!

[@ChrisbyBike]

Hi Chris Wong In the beginning I felt that there was a lots of noise (I come from a Road bike. Zero noise) but with time the noise became a great company in long rides. How do you like your new Brompton? Have you cycled to a coffee shop and went in for a coffee(or water)? That is the moment when we really understand the beauty of having a Brompton 👍🏻😊🚴‍♀️

[@chriswong2012]

@@ChrisbyBike Brompton is absolutely an excellent bike, particularly in small spaces in Hong Kong. I brought my bike to commute in the underground, to office, riding on the cycling lane as well as went for a coffee as well. It's compact form factor make it capable for city use. I am also very surprise that my 6-speed Brompton didn't compromise with it's speed, despite it got only a 16" inch wheel, it can easily go with >30km/h with 3- gear. Absolutely stunning and amazing. But I found the steel version is really a bit heavy, and when rolling on the bumpy road on the street it need some extra skills to walk it smoothly. But I am very happy with my Brompton and also admire and appreciate the design and engineering made behind this bike.

[@ChrisbyBike]

Hi Chris Wong It is a great design and perfect for cities. But do agree, I would love it eaven more, if Brompton weight 6kilos instead the 11-14 kilos. It would be perfect. To roll it in bumpy streets a nice set of good EasyWheels and a EasyWheel extension will help a lot. Keep Safe! Keep Riding!

[@colinhoward2200]

Great video as always :) However after following the steps, my issue actually turned out to be cable tension.

[@ChrisbyBike]

Hi Colin Howard I'm glad you found the real source of your problem. Some times cables stretch. Nice to have you on board!

[@art_cher_j6747]

Hi, thank u for the video. I would like to ask for High gear, is it the ‘+’ sign. And is high gear using the big or smaller sprocket? Thank u.

[@ChrisbyBike]

Hi Art_cher_j It is a Interesting concept because the highest gear is actually smaller chain ring. The bigges the chain ring, less effort we make.. Check out this video about how to change gears. kzbin.info/www/bejne/ZqGTgXala6xsqK8 Nice to have you on board!

[@art_cher_j6747]

@@ChrisbyBike thank u for the reply😊

[@ChrisbyBike]

You are welcome Art_cher_j. Keep Safe! Keep Riding!

[@jeffhiew5795]

Hi Chris, (6:58) to adjust the high and low limit screw, do we first need to set the left shifter to "+" or "-" first? What is the correct steps?

[@ChrisbyBike]

Hi Jeff Hiew Check out this video from Brompton Channel. kzbin.info/www/bejne/sKbRepuwj8ugqqs It is a very good one👍🏻😊

[@jeffhiew5795]

@@ChrisbyBike thanks for the video link. The video mentioned to set the left shifter to "+" for high gear. But when adjustment to limit screw for low gear, do we switch the left shifter to "-" ?

[@ChrisbyBike]

@@jeffhiew5795 Yes, after you adjust the + gear, change the shifter for - and move the other screw to adjust it. Hope to be of some help. Nice to have you on board!

[@jeffhiew5795]

@@ChrisbyBike many thanks for the clarification, it was a great help 👍. Love your tutorials Chris.

[@ChrisbyBike]

Glad to be of some help Nice to have you on board! 👍🏻😊

[@jeffhiew5795]

I watched the tutorial many times but don't understand why there are two screws to adjust the high and low gear? Actually adjust one screw should be sufficient?

[@ChrisbyBike]

Hi Jeff Hiew It is the same as the adjustment on a Road bike for the front gear. One screw adjust the limit of the higher gear and the other adjust the limits of the lower gear. They make the limit and adjustment for the gear extended to the left in one screw and for the right on the other screw. Hope to be of some help. Nice to have you on board!

[@skrooa]

@@ChrisbyBike Thank you for this video. You might’ve saved me quite a lot of time. But prior working on my issue (sometimes it doesn’t shift from higher to lower gear, no issue the other way around), Id like to check on something. The screw you used for the higher gear is the left one and right one for lower gear? I watched the video a few times so I think that’s that but I don’t want to make any mistake since brompton bikes are quite expensive. Just discovered your channel, I’ll browse through it. Who knows, you may get another subscriber.

[@ChrisbyBike]

Hi Skrooa You are very welcome to the Channel! It is normal, this happens because the cable stretches. I had the same problem this week, and I'm making a quick tip about how to do this adjustment (it is the same as the video). Do not worry, adjusting the bolts won't damage the Brompton 👍🏻😊 Nice to have you on board! Keep Safe! Keep Riding!

[@coachBWC12]

She takes forever to get to the point and by then you turn off her voice