Brompton Bottom Bracket Removal

[@kiereluurs1243]

Just what I needed to know. (And the stand.) Good to see it is realistic, with the effort needed. (Though still a lot newer and cleaner than mine.)

[@brilliantbikes]

So glad it helped and thanks for watching!

[@bytesabre]

I definitely don’t miss the bottom brackets of my childhood with loose ball bearings inside. Sealed cartridge BBs were such a massive improvement for me and I’m glad the Brompton has them

[@brilliantbikes]

Thank you so much for watching! We agree they are a great invention!

[@DanT10]

Thanks for the side by side differences between ISO and JIS! It really helps.

[@brilliantbikes]

Thanks for watching!

[@StuMicrolight]

when is the second part of the bottom bracket remain and install be?

[@carywatmore]

Excellent as always - you’re such a joy to watch - such a silly sense of humour.

[@brilliantbikes]

Thank you! And thank you for watching!

[@vuongnh0607l]

Thanks for clear instructions, I'm trying to learn bike maintenance at home and your channel has been immensely helpful

[@brilliantbikes]

So glad they have been helpful! Thanks for watching!

[@lostinlivi]

The mention of old school hammer and a block of wood brought tears of nostalgic laughter to my eyes 🤣.

[@brilliantbikes]

Many thanks for watching and for your comment. We simply had to mention the times you would have waked it!

[@SaltBayGull]

The hammer and block of wood method is also needed if you don't screw the crank puller all the way into the crank, so instead of pulling the crank off the bottom bracket, it pulls the threads out of the crank. What I do now is I clean the threads in the crank with a small brush and a bit of degreaser, and then make absolutely sure I drive the puller home with a wrench.

[@prestopatch]

Great video as always. Brompton BB shells tend to be distorted, perhaps due to the machining of faces happening pre brazing, then the brazing causing the BB shell tube section to gently 'banana'. This is why a lot of manufacturers face the BB shell after the frame is constructed. But Brompton tend to get away with what is otherwise a major issue because of their use of plastic cupped BBs. So anyone e.g. upgrading to a TI Parts titanium metal cupped BB or another part like that will likely run into major problems because on tightening, the bearings may fall out of alignment and grind due to incorrect axial loading. For this reason, I had to drop my Brompton to my bike shop to have the BB shell faced. Prior to that, tightening the BB shells was causing the axle to grind (which would destroy the bearings). Also pro tip, the SHIMANO TL-UN73 / Park Tool BBT2 (replaced now by BBT22) tool works best when used with a penny washer and bolt to affix the tool to the BB axle, which maintains a fixed load during rotation towards its removal, which tends to stop the plastic BB teeth stripping, which is what I did, and then my bike shop showed me what they do to prevent that ;)

[@NoZenith]

I have no idea what the last part of your comment is talking about but I'm going to re-watch this video and try and figure it out because it sounds important for when I end up changing mine hahaha

[@Rob-cv3vh]

Thanks for this, the washer and bolt is a superb idea! I use a socket set to do mine and that was the most tricky part of the procedure.

[@misstubbie1313]

Yeah... I'm not doing that... EVER! 😂 Watched the whole thing though, because, who knows. May come in handy one day. I appreciate all the exertion you applied to the task!

[@brilliantbikes]

😂 thank you and thank you for watching!

[@stopclop]

Amazing video ! As I say in french : "Tu illumines ma journée"

[@brilliantbikes]

Merci beaucoups

[@southerntexashomestead5028]

Great video. Might you consider making a video on the installation of the rear rack for those of use who purchaded a bike without one? I would very much appreciate watching such a video before attempting to install the rack on my new bike. Thank you so much.

[@brilliantbikes]

Thank you so much for watching -and the suggestion. We have a long history of trying to do the rack video! We keep selling them and. It having a spare one to fit! Fingers crossed we can do this soon!

[@StuMicrolight]

Great video again, earlier this year I did a full overhaul of my Brom' as many parts was at end of useable life including the BB that was 22 years old Stu.

[@brilliantbikes]

Wow! That’s good going! Thank you so much for watching.

[@StuMicrolight]

@@brilliantbikes next thing to do next year is to check and grease the headset bearings

[@MrNewtonBraddell]

Extremely useful, thank you!

[@brilliantbikes]

Thank you. We just need to finish up he installation! Thanks for watching!

[@finncarlbomholtsrensen1188]

I have changed my Bottom Bracket into a titanium version with ceramic balls, and I expect it to last my time, as now still 73, for a month and a few days. Years ago I built a LOOK top frame with a Shimano Dura-Ace set, and Brompton could learn much from more modern type sets!

[@platypushatstand]

Please could you state the make and model of Ti BB you’ve fitted?

[@brilliantbikes]

Thanks so much for your comments and for watching. Yes the type of BB would be very interesting

[@sheilastallard]

So now you have a collection of Brompton Balance bikes!! Love your videos hope you are going to do a Xmas special. Stay Safe!!

[@brilliantbikes]

Thank you for watching 😊. Hopefully not balance bikes for too long! A nice new collection of BB to go in… I have an orange one to go with SnackSuma (the orange Brompton) on order.

[@davidpowell5437]

A very clear explanation - and I love the very idea of the Brompton Balance Bike. Can't wait to see you riding it to school (thinking of a famous video of a young fellow doing just that!). However I have to say I'm not impressed with these two Park Tools. I reckon a 3/8 drive ratchet plus half a dozen carefully selected sockets and about 4 hex drivers could cost less and would certainly avoid the awkwardness of trying to force the tool handle past the pedal and crank arm. In point of fact my crank extractor does not have a built in handle, I simply use an adjustable spanner to fit and the ratchet to extract and I can always arrange things so that the spanner handle is roughly opposite the crank arm, for good leverage. Still, you got the job done. I stand to be corrected on this, but would it be a good idea to warn against combining ISO and JIS components? I understand the taper angle is subtly different which make it difficult tp get a proper alignment between chainring and sprockets.

[@Rob-cv3vh]

Great video! Coincidentally I ordered a new BB from you last night for my ex wife's 3 speed (yes we're still good friends!). I've changed my own BB in the past but there's some good really tips here that never occurred to me. The strap and seat post trick will save my knuckles at the weekend!

[@brilliantbikes]

Thank you so much for your order and for watching! I really would never have undone the new Brompton BB without that trick! Good luck!

[@alannorman1773]

Brilliant, clear, step by step video. Thanks

[@brilliantbikes]

Thank you so much for watching and for your comment!

[@linusloo]

Been waiting for such a video for a long time. Excellent video and explained so well. Differences between pre and post 2013 bottom brackets. What tools to use. Direction of turning the tools, etc, etc. Well done! Waiting for Part 2. In the future could you consider doing a video on changing the headset?

[@brilliantbikes]

Thank you so much for watching, your comments and suggestion. Funnily enough we recorded a video on replacing the Brompton headset, then weren’t happy with it, so never made it! We plan to re do it soon!

[@mauricesvay]

The Brompton gloves look cool

[@brilliantbikes]

Many thanks for watching, and for commenting. They are nice and warm too.

[@rolfschattschneider]

Very good explanation with all details, thank You very much. 👍

[@brilliantbikes]

Thank you for watching!

[@podrugiejstronie7006]

I'm curious how to check and adjust steering head bearings. You promised a video like this once. Courage :)

[@brilliantbikes]

Oh thank you for reminding us! We recorded it! Just did not like it so keep planning to redo it! Thank you for watching!

[@6robertsonj]

Excellent video - very helpful indeed. Thank you for putting this together 👍🏻

[@brilliantbikes]

Thank you for watching! We now just need to finish installing it!

[@stolenorange]

Those Park tools are the business!

[@brilliantbikes]

Many thanks for watching! We agree!

[@tomc8854]

Wow❗️ easily your most physically challenging video. Could almost see your muscles 💪 trying to pop through the big puffy jacket. Hope you treated yourself to a nice recovery shake afterwards . I did learn a couple of things. First it was very wise of me to have my bike shop do this❗️Had to have my BB and crank changed to the newer versions when I got a 40 tooth chainring for my three speed. Second I don’t have the tools or patience to do this , I’d probably reach for the big hammer and that never ends well😁 That only leaves me with one question. Do crunchy bottom brackets stay crunchy in milk❓

[@brilliantbikes]

I think the good thing is that the BB would stay crunchy even in milk, but not sure how nice they would taste. Thank you for watching and I can imagine the amazing scenery where you are 😊

[@tomc8854]

@@brilliantbikes been up in Washington and Oregon the last few days grey and dreary 🌧. But heading to Calli and Arizona next❗️☀️If you’d like to see more of my bike adventures check out my Facebook page.🚚🚴‍♂️💨

[@KavanOBrien]

Very good and informative as usual and I liked how surprised you was that what you were doing was actually working , I think the song has to be = ( Riding A Bike = Rudebone ).

[@brilliantbikes]

😂 I am always a bit surprised when things work soooo well! Thank you so much for watching

[@craiglouw4057]

Another excellent and entertaining video 👍

[@brilliantbikes]

Thank you so much for watching 😊

[@freedomformen2548]

Ooo thanks alot , i was planning to do this on my Brommy 😁 Just on the right time ♥️👍😀🌻

[@brilliantbikes]

Thank you for watching. So glad it helped.

[@freedomformen2548]

@@brilliantbikes ♥️🌻

[@gap9992]

I do love watching your maintenance videos - always informative but entertaining too! Square taper BB is such old technology now but still does the job. I have to say that cartridge BBs are one of my top 10 cycling innovations over the last 50 years because I no longer had to adjust the old cup and cone type that never seemed to stay in adjustment for long and let water in almost immediately!!

[@brilliantbikes]

Many thanks for watching! They must have taken forever to name them ‘square taper’ but they are brilliant!

[@bungeadedeji1482]

This is an excellent video. My question is can I replace my old pre 2013 bottom bracket and put a newer one back in? So re-fit a JIS one having taken an ISO out? I'm wanting to end up with a chainset that has both a chainguard on and a smaller number of pointy bits in preparation for an easier gear up the hills of Bristol!!

[@brilliantbikes]

Thanks for watching! Hope it helped. If you change to the newer bottom bracket you need to change to the new spider crankset, like this one brilliantbikes.co.uk/brompton-chainsets/1939-brompton-crankset-with-44t-spider-chainwheel.html Otherwise the chain line is out

[@helloitsdawn]

This is my favorite video to date. What is the brand and model of the pedals on the orange Brompton?

[@brilliantbikes]

Many thanks for watching! The pedals are Crank Brothers double shots. I love them! But the don’t fold so the left one sticks out a bit.

[@themadscotsman2159]

I've changed a plethora of bottom brackets in my years of disassembling and repairing bikes, so have no reason to watch this video other than the fact that I enjoy watching your content. Saying that i wasn't aware of the new standard of bottom brackets, so I have learned something today. @16.40, That's what she said, (cultural reference for those who may get it)

[@brilliantbikes]

Thank you so much for watching and for your comment

[@paliaha706]

13:40 I like it *_"CRUNCHY"_*

[@brilliantbikes]

Lol! I thought it was the best way to describe it! Thank you for watching!

[@cristinatroccoliwilliams1389]

Did you do the bb install vid?

[@brilliantbikes]

Thanks for watching! We have started it! Fingers crossed we finish it soon!

[@kiereluurs1243]

English please.

[@flpirate4565]

Your a very smart young Woman, and pretty strong. 😍 I'll be waiting for the next video my Dear. Thanks

[@brilliantbikes]

Many thanks for watching (again 😊) I would never have undone the new bike cranks without the tricks!

[@mramazingtroy]

What is the Orange front light on the Orange Brompton? And how does it perform? Have you reviewed it in the pass?

[@brilliantbikes]

Many thanks for the question, it’s a Supernova, sorry we have not reviewed it before as we were struggling to get hold of them. So far I have been impressed with it, but be aware the rear light needs to be on the same make. Thank you for watching

[@Mick_Holland]

"Lefty Lucy" & "Righty Tighty", you're barmy, I love it! Are the bottom brackets interchangeable between the 'old' and newer models? You mention that the newer bracket is plastic which leads me to think that the older one is metal and therefore possibly more hard wearing? I'd love to hear your thoughts. 'scuse me asking so many questions but I plan to buy one in spring and am doing my homework. Cheers, Mick 👍🏼

[@brilliantbikes]

Many thanks for the question! We have started the re-installation video! But not finished. No you really should use the old (ISO)BB with the old crankset and the new (JIS) with the new spider crankset. So if you are planning on purchasing a Brompton with the older crankset please keep in mind the changes needed. Just let us know if you have more questions! Thank you for watching!

[@Mick_Holland]

@@brilliantbikes Thanks so much for your reply. 👍🏼

[@AboveGroundLevel.]

Hello. Great informative video. Did you publish the BB installation as can not seem to find it on your channel? Thanks 👍

[@handsonbrompton7875]

Very instructive (and funny) as usual 👏👏👏👏👍😘🍻

[@brilliantbikes]

Thank you! And hard work this one!

[@elnous]

I hope I'm not the only one waiting for the second part, with the insertion of the new bb!

[@brilliantbikes]

Many thanks! We were just chatting about what the next video should be!

[@elnous]

@@brilliantbikes I will always be grateful to you 🤗🤗🤗

[@jonathanleach3914]

Excellent. V good film

[@brilliantbikes]

Thank you! And thank you for watching again!

[@spulwasser]

I have a 1993 Brompton and when I look at the sprocket from the top whilst cycling, it doesn't stay in a straight line but rather wobbles....so I guess I should replace the crankset + bottom bracket ?! Also if I do so, should I go for the old or the new parts (which ones are better) ?

[@boredalchemist]

Hi, love the warm and friendly videos, was wondering, do you know when the P line derailleur will be available as a stand alone purchase? Thanks

[@platypushatstand]

The P line derailleur is unique and therefore will only fit a P line rear triangle, not any of the previous rear triangles. Though the P line is weight saving it’s gear range is narrower than a BSR 3-speed hub. A retrograde step IMO.

[@southerntexashomestead5028]

An additional question, can you replace your pedal on the right side of the bike with a folding pedal? Thank you in advance for your consideration. Cheers.

[@perrybello]

Hi, noob here😅 does P line has the same bottom bracket with C line?

[@brilliantbikes]

Many thanks for the question. Yes. Thanks for watching!

[@bobwilliamson5574]

Brilliantbikes, do your bromptons grow on trees ?

[@brilliantbikes]

We have been trying to see if we could cultivate the Brompton tree. But the best we seem to manage is to let them rest in the tree! Thank you for watching

[@chrisrandall6119]

I'm going to attempt this on a (very well used daily) 2016 BB with a Parktool BBT-4 but I've read on older BB's it's possible to shear the cup where it connects to the thread - is this a risk and any tips to avoid it! On your website you sell a Shimano UN-300, is this a suitable replacement for a 2016 Brompton? Thanks!

[@amandaleigh3852]

Ha! BRILLIANT (of course!) and not a little terrifying... not sure I’d ever try this at home as I sometimes find the lefty-lucys and righty-tightys get counterintuitive round pedals and bottom brackets and the risk of irreversible damage for the infrequent flier is too risky! 🙈 Wherefore art thou Haines Brompton Manual?! Brompton balance bike... Like it! 😂 Merry Christmas and all the best for ‘22! 🤗

[@brilliantbikes]

Merry Christmas to you too! Hope you have a lovely break! Thank you for watching! I know I keep having to go back to - which way do I pedal… then work it out!

[@hochoonhiong]

thanks a lot for this video :)

[@brilliantbikes]

Thank you for watching!

[@lech2050]

My eBrompton with very poor coverage. I left for 5 stars, fully charged battery. Usually it is enough for me for about 30 km. After driving 20 km (on asphalt, in the city, with two stars), I miraculously returned home, with one star flashing. I have had an e-Brompton bike for two years. How can I increase the e-driving range: a) Replace the battery ? b) Replace the motor ? c) Any cheaper solution?

[@brilliantbikes]

Brompton do explain that the battery should last for between 25 - 50 miles (40 - 80 km). But this depends on many things like temperature, weight, tyre pressure, wind, terrain etc. I have popped a link to their description below: brompton.zendesk.com/hc/en-us/articles/360010560358-How-far-can-I-ride-on-a-fully-charged-Brompton-Electric- Hope this helps

[@suzstancova4220]

I am hier just for outtakes :-)

[@brilliantbikes]

Lol! I think there were a lot! Christmas outtake special….? Thank you for watching!

[@suzstancova4220]

@@brilliantbikes Christmas outakes special sounds excellent! Thank you for all the work you put in your videos!

[@hochoonhiong]

horrible squeaking or "start to be play"... i can't really make sense of what you says... what does it mean?

[@tortinwall]

Hang on a mo... the right hand BB screw thread is righty-loosey not righty-tighty. The BB is the opposite of the pedals. RH pedal = RH thread. LH pedal = LH thread.

[@stevetaylor8698]

I thought JIS stood for, Japanese "Industrial" Standard?

[@brilliantbikes]

Thanks for watching and taking the time to point out the mistake We put that in to see if anyone was paying attention ! Really - thanks for the correction - you are correct (according to Wikipedia too - so it must be true)

[@martinodriscoll5158]

Great videos . Just ordered my first Brompton..can't wait to receive it...are you single! ...no disrespect or offense meant..

[@brilliantbikes]

Thank you for watching! I hope you enjoy your new Brompton. Sorry spoken for 😀

[@fisharefriends598]

Wish they just used bsa threaded

[@jaime8174]

I'm here because I found out there is no using a big flat blade screwdriver and hammer with these bbs !!

[@brilliantbikes]

lol! 😂 thanks for watching!

[@mybike8640]

👍👍👍💛💛💛

[@brilliantbikes]

Thank you 🙏 😀😊

[@rydmerlin]

She who regents not doing this in summer. This took a lot of courage doing this on camera.

[@brilliantbikes]

It would be much nicer when the parts are warm! Added cold fun! Thank you for the comment and for watching.

[@SingaporeUntold]

I think it’s better to do it with the bike on the ground Sometimes you need a leverage bar to help. If you seat post fits, then you can use that for the tool

[@Robert-ll2bx]

Thumbs. Up up up Brompton. U k us😃

[@brilliantbikes]

Thanks for watching!

[@joeagusslamet9170]

👍👍👍💛💛💛😁😁😁

[@brilliantbikes]

Thank you for watching 🙏🙏🙏🙏🙏

[@Rabe1907]

Min. 02:07 ...😖😩😵 SCRATCHER ALERT !!!😁

[@Luke-san]

Now we'll know who has watched the video ... pushing Bromptons around.

[@brilliantbikes]

Strangely it was quite fun going down hill! Not so much going up hill! Thank you for watching

[@Luke-san]

@@brilliantbikes Next week an episode on how to remove the brakes? :-)

[@effyleven]

Quite something to hear a little heavy breathing.. .. from a lady who can wrangle Brompton tyres on and off with her bare hands!

[@brilliantbikes]

It was really hard work! My stomach muscles had a work out!! Give me a Marathon Plus any day! Thank you for watching

[@shabbos-goy9407]

I need a female like this. Why? I reckon she could properly change the head gasket on a 1969 Alfa 1750GTV!

[@brilliantbikes]

lol 😂 Thank you so much for your nice comment and for watching! I really enjoy them and playing with bikes.

[@jamesbalhambike1205]

Japanese INDUSTRIAL Standard.

[@brilliantbikes]

Thanks for paying so much attention to detail! And thank you for watching

[@edumardel]

There wouldn't be any difficulties if Brompton just decide to equip every Brompton with a proper crankset, instead of those messy outdated square bottoms brackets...

[@brightlightdun]

You really screw it.

[@brilliantbikes]

Lol! We wanted to make sure people look after their cranks! Thank you for watching!

[@bolleolympus]

I would NEVER have bought this bike if I knew it was plastik!!!👺👺

[@brilliantbikes]

Thanks for watching and sharing The cups on the bottom bracket thread are heavy duty plastic - this means that they act as a lubricant when installing and means they are less likely to seize than metal ones if they are installed with no grease