Brompton rear hinge pin replacement
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- Опубліковано 6 січ 2021
- Special thanks to Chuck at freedom folding bikes for repairing my brommie and for letting me film the process.😀👍
Visit their website at
www.freedomfoldingbikes.com/
For all your Brompton related goodies.
#brompton #bromptonrepair #foldingbike
The store owner has excellent technical skills!
It's just a push iron for goodness sake lol.
You need a reputable store that know what they're doing - a lot of damage could be done by that drill! Well done Freedom Bikes, Great video.
Don’t forget the torch😃. It takes skill not to damage the frame with that as well.👍
Yep, good technical video. Reminds me of the swing-arm bearings on a motorcycle (in miniature). Thanks to Brian and Freedom Folding Bikes.
If you have to drill, use a sharp 1/4" drill bit. Make sure to support the frame when drilling. If you are not able to drill out the bolt, as a LAST resort you can cut the bolt with a hack saw. Be SUPER careful not to damage either the swing plate of the rear swingarm or the hinge tube of the main frame (really easy to do).
Good tip I got from Kinetics is to stick an allen wrench in the bolt, the tighter the better, and heat the wrench with a torch. The heat will get the loctite without risking to burn the paint on the frame. Awesome video!
That looked a hard job good job that Chuck knows what he's doing
Excellent video Brian. No way I would be able to tackle that repair without disaster ensuing. A real eye-opener. Thank you very much.
Interesting watching and listening to Chuck from Freedom explaining the process. Nice audio quality on both of you.
Wow.......Chuck is a very knowledgeable guy, you're lucky to have him as a specialist in Brompton's
Such mechanic is a real treasure.
No responce necessary.
Thank you Brian (apologise if not spelt correctly) and Freedom Bikes, another interesting, informative and helpful video.
Take care all.
Excellent video. I think it will be one of the most important parts of the bike in terms of maintenance. Congratulations again Brian.
That quite technical, I will book mine into Brompton Junction London for a complete overhaul on the anniversary of my purchase. Thanks Brian, had no idea of such maintenance requirements. In Brompton we trust 🇬🇧🏴
Chuck is awesome!
Excellent insight in to proper Brompton maintenance, safety checks and servicing - thank you both
Thanks Brian and chuck - excellent stuff
Thanks for the video! Cool to see that work done by a professional. I don't see any in-depth Brompton work like that anywhere else.
Thanks Freedom for showing how it’s done. Doubt I will ever do it nor do I have the tools but I do have an authorized Brompton retailer two blocks away and now know how he does it.
First time I have seen the proper reaming tool. Did mine 2 years ago with a standard reamer. It now needs doing again after some 3K miles. I used screw extractors, to lock the spindle for removal of the second bolt. I also used a torque wrench to set the screws. But I have qualifications in basic mechanical workshop practice. I have trouble finding anyone that is qualified to repair Bromptons!
OMG that was an awesome tech video!! I need a Chuck in my town. Thanks Brian.
What a brilliant bike mechanic you have! Excellent informative video.
I didn’t think I was gonna sit down and watch this one; but then when it got to the portion where he had to pull out a few extra tools to get in there, it really got interesting. You can really tell just how intricate and detailed a Brompton is made with a video like this. Thanks for sharing this, learned a bit about mine, and something to check out next time that I talk to my preferred Brommie shop
Thank you, I appreciate that. I will be doing more of those type of videos to help people with Brompton repair advice.
I have seen the bushings for sale, but I honestly didn't know for what purpose, but now I know! 😀
@@ibikeunfolded How much did this procedure cost overall Brian?
Terrific, informative video. After watching ur previous videos that involved Chuck/Feedom bicycles, I have purchased a few items from him. Found Chuck to be most helpful.
Yes, he is most helpful and very free with sharing his knowledge😀
This was extremely helpful for a friend of mine who has a Brompton, unlike me - yet.
I enjoyed that video, an easy looking job that is very clearly not. One of your most informative videos, well done and thanks again to Chuck.
Just done my one on my own thanks to this video ✌️👍💪thanks so much I'll upload the video soon ❤
Great video Brian. And a Happy New Year. From England 🇬🇧
i like this kind of vids. learning the do's and don'ts of bicycle mechanics is my thing. i service my own bicycles. one folding and one bmx type. both made in china but parts are in stock here.
Great to have a very knowledgeable bike repair place for your Brompton. If I’m ever in the area, will definitely stop by.
You should, they are friendly and there is a lot of folding bike stuff to look at.😀👍
excellent video. Glad I saw that. I have the equipment to do that myself, if I ever have to. But seeing it done makes it so much easier
Great video Brian. I was surprised that Chuck didn't have you strapped to a chair before the torch & drill made an appearance. You held up well. Nice work Chuck!
Thanks for documenting.
Firstly l, thank you Chuck for sharing your knowledge about Brompton maintenance and thank you Brian for a so interesting video.
For sure, rear hinge replacement isn’t for everyone.
With the right tools, those used by Chack, good manual skills and mechanical maintenance experiences, it is feasible.
I am one of those people that likes doing maintenance to his Brompton.
Yes, my rear hinge has a certain play so I need to replace the pin.
What I need to proceed with the pin replacement is the way I can get or build the following tools:
1. To hold the axel while removing the opposite bold (at 7:35 of the video)
2. To remove old bushings (at 11:17of the video)
3. Special reamer (at 13:31 of the video) to ream the new bushings
Thanks in advance.
That tool made out of a bolt, washers and a nut is genious. Gotta try that at the shop next time somebody brings in a Brompton for a hingepin replacement. Usually it's drilling time with these.
Good bike mechanic is your friend there. Well done
I think so.... 😀👍
thanks for this one mate, really really interesting! my rear hinge bushes are still the ones the bike was fitted with in 2003! - I think ! need to get them checked out asap!!
Never hurts for periodic checkups. I am really hard on my Brompton and the bushings were not that bad. They had a small amount of play which is too much for me so I got them replaced as a preventative measure.
Brian, don't you think that you should have labelled a 20 minute video with the title "Brompton rear hinge pin replacement" as "Not Click Bait"? 😁.
More seriously, Freedom Cycles proves that it is an excellent resource every time it features in your videos.
Thank you for the video! Great information
Great video Brian. That'a good idea: one repair, even a simple one, per week (or whenever you want ... :)). Thanks. Greetings from Italy. Ciao
Great video, Brian. 👌
Very good info in this video.. thanks to both.
Great to know, thank you 🙏
Thanks for the very interesting video! Very informative and worth knowing! 👏👏👏😎
Thank you, I think I will do more informational videos from time to time as circumstances permit.😀
Thanks for the video. It's very helpful.
This procedure is called line reaming and is used in many places on aircraft. It takes patience, special tooling and care.
thanks to you and Chuck for letting us look over your shoulders as this is a job I need doing too,as well as renewing a wearing seat post sleeve.Both jobs need to be done for me as I don't have the reaming kit or ability/confidence for either and will be booking them in before spring on a 2002 model ...stay warm and keep rolling !!
I may need a seat post sleeve soon as well. I tightened mine up and so far so good🙏.
@@ibikeunfolded to get an good idea of the project look at"brompton air" on UA-cam as he does one at home
Ian, the seatpost sleeve replacement is trickier than this hinge bushing replacement and the special reaming tool is VERY expensive. It also requires a special flexible adhesive that requires 24-48 hours of curing before reaming.
@@freedomfoldingandelectricb8114 I agree and would give the job to a mechanic who knows what it entails
Did my seat post with a big adjustable reamer. Good to practice on before doing the bottom hinge!
Skillz. Thx Chuck
Excellent film. I’ve had mine replaced twice in 5 years.
How much did that cost each time?
Fantastic, I always tell new Brompton owners (in London) to get to know their local Bromnpton dealer by name and just chat to them, rather than dealing with big anonymous shops. The experience, knowledge and friendliness of these small shops is exceptional and worth cultivating if you have one nearby.
My Brompton is 7 years old now and I've never done that, or needed to touch the other hinges.
What is the year of manufacture of your Brompton Brian and does it have two initials stamped into the base of the frame?
Happy New Year, great video.
That was fun to see.
Very interesting video thanks!
This is fantastic...can we have more videos like these but for say harder bits like installing new gearing cables too? Thanks
Dang, this is the only aspect of owning a Brompton that has me a little discouraged. There’s no way I would take my Brompton to another state for this repair. I need to be able to complete repairs on all my bikes. No exceptions. I still have it in my head that I have to have a Brompton so ill continue to investigate what tools and techniques are required and if I’m up to the task.
love the video thank you
Nice video Brian. Just goes to show the thought that goes into the engineering on the Brompton's. Definitely not something I will be trying at home!
Top notch mechanic👍🏻
Poor engineering by Brompton😰
Good to know, thanks
Well done .Good
I have a B75; it is less than ?2 years. I ride it probably more than a commuter, for fun/exercise. I noticed wobbling in my drive train standing up on hills. I thought it was my chain ring, but it was the same fold screw. Even with the loctite, it self-loosened. one strange thing, are the bolts are not metric. Per reading, i thought there was a tool to hold the drill vs hand holding. also i thought brompton shops would not have to use diy rigs. obviously the operator knows what he is doing/has experience. thanks for doing the video. i know what to look for, and that i am bringing it in for a mechanic to work on it.
Hi Brian, good informative video. Thanks, and that’s an unusual bike seat. I guess for your tailbone?
Well done video
I'm attempting to drill out the screws and remembered this video. It's not going so well - it takes ages!
Very informative video.
Thank you, I appreciate that.
9:11 I’ve seen a mechanic who drilled a hole in a spoon for the torch area. May help to leave the torch longer
You put yours though stress?!?! I weigh about 245lbs, I think I hear mine cry every time I get on it lol. They’re well built and service parts seem readily available, a properly maintained one I expect to last a long time. Good job man, glad to see someone looking after their kit! Not something I could do at home I feel the need to buy some more tools that I’ll probably never use... 🙄
I carry a lot of weight. I have a very heavy back pack and the T bag is usually loaded. The roads here don’t help either😀
@@ibikeunfolded fair point well made.. I didn’t add the bag to the weight or factor in riding gear, just shows you how strong these little things are... i use the large metro messenger bag on the front it holds quite a bit in the large central section, I just wish it had more internal pockets for storing ‘stuff’ and then finding it again more easily. Some of the roads in London aren’t too clever either.
Great video. Would be nice to have the diameters and tools and torques mentioned
Great video Brian. Have you considered getting a Brompton Electric?
Excellent work, however you didn't need to replace the hinge! looks like you had years of use left...Brompton says if there is over 2mm play either side then you should replace.
Superb knowledge really well applied thank you for sharing. If this job is botched it would ruin the bike
Yes, it's scary to let untrained bike shops touch the Brompton.
I'm deciding between the Brompton and a Bike Friday Pakit. This shop is 30 minutes or so from my house and gives the Brompton a big tipping point.
I'm in NYC with an authorized Brompton Junction not too far in Greenwich Village. I believe in supporting LBS( Local Bike Shop's), so I will almost certainly buy there if I don't move before saving up. I will tell you, because of Brian's UA-cam channel showcasing FREEDOM FOLDING BIKE'S owner/bike mechanic Chuck Ankeny, he will be getting business from me in the future when I get a Brommie. Only an honest, transparent professional with profound experience would allow real time videotaping,imo. His rapid, adroit repairs and follow up listing of what he charged Brian, is testament to Chuck's superlative skills & integrity. Heck, I feel like visiting his shop and I'm a lot farther than you and don't yet own a Brompton. Best on your new purchase,ride safe,and Happy Holidays to you and all,phil
I have bought a titanium part for my Lightweight, but I may leave it to a dealer to replace it, as my Ceramic crank?
(1) Informative video. Thank you.
(2) Suggestion: blow your nose - Lol
(3) 2:53 A mechanic steps on my frame w/his shoes? He knows he's being filmed. Sheesh
Great job Chuck. What was the torque on the bolt to hold the pin? I noticed you didn't use the torque wrench on it, so I am asking.
About 10 Nm. But not that critical because I'm using red Loktite. Tight, but not so tight that you strip the wrench or the bolt head. The bolts are very hard so you will likely strip the tool before the bolt. It is important to use a good tool and make sure it is fully engaged. Old worn out tools will give you real problems.
That seller is very handsome 😘
Perhaps motorcycle chain lube could help with chain wear?
I've heard this "self-lubricating" story before, I'd have been tempted to lubricate the pin anyway.......
I ordered my Brompton rack from this store.
I want to know if there is something to do in order to take care of the hinge pins on a brompton ?!
I’ve ordered a Brompton, don’t have it yet. Was curious about this critical point of vulnerability in the design. It was a little hard to see exactly how it was going back together. It looked like the pin or spindle protruded out on either side. I was expecting the flat parts of the triangle to rest on those protrusions and pivot on the spindle… or turn the spindle as it pivots, but then he added the nylon washers, and it looked like there was no more spindle protrusion left at all… which means that the triangle is pivoting on the screws??? Or was there still some spindle protruding that I couldn’t see, and the triangle was pivoting on that, and the screws just hold it all in place? I don’t get it, it was hard to see. You want the back triangle and the spindle to be like one piece, rotating inside the bushings, right? So do the screws just hold the triangle up against the sides of the spindle to make it one piece? Hard to see. I guess I’ll have to wait until I get my own bike.
Top stuff! One thing I'm taking from this......PUT THE SPANNER DOWN AND STEP AWAY FROM THE BROMY!! 😂
LOL😃👍Exactly
How much was the part and labor for this replacement?
What is this small device on the handlebar of your bike?
I could be mistaken, but I got the impression that the nylon washers were reused. Wouldn't this be a false economy?
Why did you change the hinge? How noticeable was the play? It was noisy? Cause mine make a squeaky noise every time i put some pressure on the pedals
That may just be debris inside the suspension block as it rubs on its central pin and not the hinge replaced in the video - it was happening to mine, I just added a tiny amount of lubricant and it went away...
Trying to remember why I want a Brompton.
For the cheap plastic gear shifters.
how do you know you need to replace it ? Shakey?
Great video. Wish I could get my hands on a Brompton here in Ireland
#spinalfusionguyonabike
How much did that cost, please?
Boss how much it cost you to repair it for you?tyanks ride safe..
Hi, where did you get your easy wheels? Are those from Brompton?
Yes, they are Brompton branded easy wheels.😃
@@ibikeunfolded I don't seem to be able to find this type of eazy wheels in Singapore. Saw it online in the UK but out of stock.
i recently brought my brompton to a brompton bike shop to service and they informed me i needed to replaced the same rear hinge and also the hinge in the middle of the frame. they quoted me $40 for the part and $120 for the labor. So both could cost me around $300 for parts and labor. This is for NYC. Just curious, how much did it cost for you for parts and labor?
What is the Weight of the bike???
Hi Brian, mind if I ask how much the repair cost?
You know I did not look at the receipt😃LOL. I will check it and get back to you.
About $55 for Brian's repair - some are less if we don't have to drill the bolts. Normally this takes me about 15 minutes
My Brompton came apart while riding after completing 6 miles.
I am NOT AT ALL mechanically inclined, I wouldn't dare attempt to do this myself
I would rather let someone else do it as well.
You should definitely have him overhaul your bike once a year. Why given all the riding you do why don’t you have clipless pedals? Why didn’t you swap out the chainring if that’s what you wanted?
I hate clip in pedals......and the shoes are horrible to walk in.
He has clamped the bike round the seat tube. Never do this. Brompton specifically tell you not to. The area where the seat tube is is secured is a major weak point of the frame. The fact that the Brompton has a long seat tube also means that there is increased leverage at that area. Always make sure you have a bike stand wide enough to secure the bike around the main tube, thereby avoiding that issue. I have had problems with the area where the seat tube is clamped shut (albeit not from being damaged in the bike stand); luckily Brompton replaced my damged frame free of charge. But please - just don't do it.
😬 I did not know that. Thanks I will remember that next time..
That doesn't make sense. That seatpost is supposed to design to hold up a rider that's around 100kg? The bike itself is around 12kg, so shouldn't be a problem.
As I understand it, that part's called the seat post. I think you're right about the leverage btw. The way he clamped it near the top, there's going to be a lot of torque round that clamped area that could potentially bend/misshape the post, making it difficult to slide it down the seat tube. The main tube's a much safer choice.
Just buy a Tern.
I am...i am going to get a tern verge.