Beautifully done. I think you may have forgotten about mentioning the new chain length. That Scram shifter certainly looks far better built. You are a real authority Hannah.
Thanks for watching! Emmmn well for now we have kept the same chain! Thought we would recommend an 11 speed! I just think a longer chain might be too long!
Hi Hanna, I’ve just upgraded my P line 12 speed to 15 gears!! I bought the Brommie+ kit sold on your website which converts the existing shifter on the Brompton and the recommended cassette (using the first 5 cogs only, 11-21 cogs). This is a far neater solution than buying a third party shifter. I was also puzzled why you didn’t mention replacing the chain as you mention it as a necessary part of the conversion. In the end suspected that using the existing one was going to work. And so it did. Although indexing the gears was far harder than the videos demonstrated, even referring to the one put out by the guys who sell the kit at Brommie+. In the end after some hours and frustration of tinkering it started to come together. Just one tip I would offer after all my struggles. When routing the shifter cable through the end clamp and that darn pesky final hole, it is far easier i found to tun the bike upside down, resting it on it handlebars and seat. This gives you a much clearer view of the clamp and final routing hole for seating the cable correctly. It’s so easy to think that the cable is seated correctly when not having a clear, unrestricted view, when in fact it is only half clamped and just ‘pinched’ in place. The problem then arises when after a little bit of tension, the cable starts to move due to not being properly clamped. Hope this helps? Kevin
Great Video Hannah been wondering when this would come out after your last post mentioned it. Really great idea. I had hoped to convert my T line to 12 speed but given this video think I’ll go XT 5 speed awesome.
So funny that I should come across this video - after having just returned from paying for my 4 speed T line! I said to the shop owner (a friend) that I would go with the 4 speed rather than 12 (with that heavy antique hub), as I could easily see the massive spacing between the gears would allow more to be fitted - my 11 and 12 speed bikes are a much closer fit! Really helps seeing what brand(s) fit direct too; especially as it means I already have tools. Thank fudge that Brompton did not use a bespoke design! And of course (and another reason why I didn't want the hub gears), as you have done, the selector can go on the correct side! 😅 I may at a later date (as a commenter has said) fit a twin chainring crank, but given the money I just paid for this beautiful bike, with parts like carbon cranks, I probably won't. 😉 Loving the vids and the out-takes at the ends. Keep up the good work. Regards, darth.
Hi, I am planning to make such modification. I would like to know if the original tensioner guilding can do the job moving freely in/out between 11-21t sporkets. And if need adding the chain length?
Hi Hannah, great video and very useful. I’m in the process of buying a Brompton P line and haven’t decided yet whether to go for the 12 or 4 speed. I wonder if this upgrade can be done to the cassette on the 12 speed? giving overall 15 gears? I’d really appreciate your comments. Thanks Kevin
Thanks so much Hannah - for developing this mod and for explaining it so well. I’m assuming it works for the Ti4 too. Love mine to bits it’s just occasionally when I’m out of town I’d like a lower geared option without going down the 12 speed route…😀😀
Thank you for watching! We have had people fit it on a T Line If you want to pop in and see if you like the difference feel free to come and try my PnLine 😀
With 2023 P-Line 21T sprocket works. With 2024 Version the jockey wheel touches the 21T sprocket. But there is some play in the monuting of the derailleur. So we put some plastic approximately 1 mm thick under the back mount to bring the derailleur a little bit down. In case it doesn't help enough, there is an extension by H&H but I have no experience with this. My 13T sprocket startet jumping after 2700km (heavy driver, wax). For me Brommie+ conversion for the brompton shifter is working.
Brilliant video as always, this could be handy for me, making the hills easier, but I'd quite to stop spinning out on gentle hills with my CHPT3, need to think about that though👍
Thanks for watching! Tricky as if you want to stop spinning out then you might want a larger front chain ring, but that would counter act the larger sprocket…. 12 speed?
@@brilliantbikes it's a bit annoying that by the time I could get my hands on the CHPT3 it had become a very closely geared 4 speed, from 6, so it's spins out on the slightest decline. Perhaps a 54 tooth front ring with your 5 gears on may work, I think the combination may be very slightly better for hills, I can't work the maths on that 😂😂 but it wouldn't spin out so easy. As the P line now has 12 speed for not much more weight or money, but more gears that's annoying. Although I didn't really want 12 gears, as I'd expect a few more issues with them and I'd have to see your review first. Any idea when you will get your hands on one? I can get up some decent hills on it, but I have my road bike & mountain bike for those rides I guess
Can this be done to the new C - LINE electric 4-speed? It seems to have the rear parts of a P line, non-titanium, of course. This would help me on a few of the worst hills of my town. Unfortunately, the 12 speed c-line is out of reach of my budget … I got the new C-line 4speed electric for $1400 less than list price
Hi, i just saw this viedo. This is exactly what i want to do. Is this ok on 2024 12 speed line? 2 questions, 1, the original tensioner jockey wheel can move freely between the 11-21T? Any change on the chain length?
Thanks for the question and for watching. We used the same chain, although an 11 speed might be smoother. If using on a 12 speed you would need to convert the 4 speed shifter to 5 speed, as the derailleur shifter is on the right hand side. We have used: brilliantbikes.co.uk/brompton-derailleur-parts-and-cables/6517-brommie-4-to-5-speed-conversion-kit.html
@@KavanOBrienBrommie plus is a company on the internet that specializes in Brompton parts. I have used their parts to upgrade my 2019 Superlight to a 9 speed . Worked out great. Written instructions that they sent were excellent.
Hi Hannah, great video. I just bought all the necessary for the upgrade. As I have a 54T chainring, can I ask you how many links do I need for the chain? 104 or is it better 106?
Did you have to adjust the rear brake cable so it doesn’t hit the chain? I know when people modify their cogs, it gets awfully close when you shift to the largest cog. At the beginning people were using zip ties to shift the brake cable over but by now there are several brands that sell a part that slightly shifts the cable over.
Hi Hannah, great video as always 😊 Can you recommend alternative shifters that are lighter than the sram ? Would it be possible to use the shifter that is now installed as standard on the 12 speeds Brompton? Thanks! All the best to you
The SRAM X01, or XX1 which be lighter, but more expensive at £145 or £170.... You could use the shifter on the bike and adjust the indexing to use either the larger or smaller 4 sprockets, but it will not shift across 5 sprockets. Thanks for watching!!!
Have now done this conversion. I ended up (by mistake of not paying attention when ordering) with the SRAM SG 10 speed shifter! Same weight; same look; same 1:1 pull ratio, just cheaper to buy! 😅 I had some issues with cable length (the outer o.e.m. cable) that I have made a video of, and the rectification, that I may post if I thought there's any interest. Turning the steering to the right caused the gears to change!!!🙄 The change up and down is beautifully smooth but there is one downside... Coming from 5th to 1st it's very easy to forget what gear I am in and push the lever one more click. Because the derailleur is only plastic, regardless of the Stop screw, I have to be careful not to push the chain beyond 1st onto the hub! I might look into swapping the SRAM lever for the Brommieplus unit. Other than that, I might look online for an old 5 speed indexed lever, or open up the SRAM and put in a stop internally. 😆 Keep up the brilliant work (pun intended), darth.
Thank you for your incredibly clear instructions, as always! I think I'll have a go at this upgrade on my T Line, but I have two quick questions beforehand: would you happen to know what would be a correct number of chainlinks, once this 21T sprocket is added? I have a 56T chainring, for information. Furthermore, you installed your SRAM shifter on the right, as yours was a right-hand side one, but I wonder, don't they exist in left-hand side versions? Anyway, your Cameraman and you are a treasure, keep up the great work! Many thanks from France!
Funny! Yes we do sell the shifter, cassette and chain. Links as follows: brilliantbikes.co.uk/sprockets-cassettes/6041-shimano-cs-m5100-deore-11-speed-cassette-11-42t.html brilliantbikes.co.uk/components/6352-sram-gx-11-speed-trigger-with-discrete-clamp-black.html or in red brilliantbikes.co.uk/components/6351-sram-gx-11-speed-trigger-with-discrete-clamp-red.html We would also recommend an 11 speed chain
Hello, thank you for making this video. I need some advice. I followed your video today and upgraded my T line to 5 speed. However, I think I made a mistake during the process but this mistake didn't effect anything (at lease I didn't notice.) I used the first 5 sprockets of the Shimano Deore M5100 Cassette. However, Amazon sent me a 10 speed Sram GX10 trigger shifter instead of GX11 I ordered. I then ordered from another vendor the correct Gx11 shifter. However, during installation, I accidentally used the GX10 shifter instead of GX11 (they kinda look the same from the outside and box...) From what I read online, GX10 use Exact-Actuation and GX11 use X-Actuation. I kept the same chain and the original 50T chainring. After adjusting the limit screws, the shifting feels find and I don't see any issue with it. I rode 10 miles today and shifting was smooth. My question is that should I swap out the shifter to GX11 or just keep the GX10 since it's shifting fine? Thanks! Oh...I subscribed to your channel today!
Hi, I would really like to do this. I have a couple of questions though: did you consider going larger than a 21 tooth (e.g.24 tooth) Also is it necessary to change the existing Brompton sprockets because they are thicker than those from an 11-speed? Thanks, your tutorials are the business!
@@AnyTutorialsI currently have a 2 speed with a 12 tooth and a 19 tooth sprocket to get a wider ratio. I am within 5% of a p line gearing spread. And have made quite a few light weighting improvements.
The new 4 speed (which here we change to 5) Brompton setup actually uses a different (known as advanced or MK6) rear triangle to the 1 / 2 / 3 and 6 speed Brompton You could change to a 5 speed rear wheel (internal hub gear) Changing to 4 or 5 speed would mean replacing the rear triangle (which is currently only available as a titanium option other than on the Brompton electric)
@@brilliantbikes Thank you very much! A 5 speed hub sounds interesting if the gears are better useable than in the 6 speed. I do not need the 1st and the 6th.
Hi Hannah, thanks for your new great videos. I have a 12-speed P-line, which could be turned into a 15-speed if my math is right 😃. The problem would be to find a new shifter which could be placed on the left of the handlebar, like the original one. Do you know if this exists?
@@heuer73 Same for the 12 speed, but it’s manageable. It would be cool to have 5 speeds on direct drive, and a very low gear for climbing when loaded for touring
You can fit 7 only on the stock hub if you have a cassette with a unibody design. These types of cassettes are not cheap either. Some aftermarket rear hubs will allow 7 cogs, but it will be significantly more work.
@@anthonylloyd6094 multiple gears are welded together which, for a Brompton, allow the gears to extend beyond the freehub and over the spokes of the wheels. That’s how you get gears 6-7 on a stock hub.
How much easier was the climb up your ‘Steep Hill’ with the 5 Speed compared to the 4 Speed? Also, please could your hard working cameraman consider making a ‘Christmas Special’ of your out-takes😁?
Yeah, it’s like that one guy commented. She never gave an overall review of the difference between a five speed and the four speed on hills. I mean the difference to negligible my opinion make a real difference go to 21 speed.
I did add a bit of a summary, I was surprised at how much difference it made up the hills! Please rewatch the end 😀 Thanks for watching! Sorry I forgot we did the ride video first!
@@brilliantbikes oh yeah, that’s right you did comment on the effort value on pedaling at the end. I jumped the gun too quick.😉 But the better question is don’t you also have a 12 speed as well so what’s the point of the six speed then I guess 🤷♂️
Brilliant bikes does sell a left hand shifter for a 5 speed conversion. This is made by Brommie+ (Brommieplus). I’ve bought this shifter it works very well, no problem. I’m not sure why Brilliant bikes don’t promote that as a conversion as it very elegantly take the 12 speed P line up to 15 gears. (5 external and 3 internal). Mine works very well and you retain the original shifter, no need to buy a Sram shifter or any other third party component. You still need to purchase the 5 cogs as mentioned in this video. The Brommie+ shifter kit costs about £55. It only took me about 45 minutes to do the conversion. The time consuming bit was indexing the gears later for smooth shifting but the end result is a joy. 15 Gears!! Bring on those hills…………..
Good idea this, but, but why not just change the chainring from that leg-breaking 52 tooth one. If you ride in hilly areas try the 44t chainring. I'm stuck with the 6-speed and now down to 40t costs £20 (stronglight). Old legs are here now.
Doing that you lose the higher gear because you shift everything down. If you a bit of a speed demon then that can be annoying. Saying that changing to 44t is suiting me fine.
Disappointed! I thought you were going to install a 5 speed hub! You sell Brompton 5 speed hubs, would love to see you swap that onto a standard 3 speed hub Brompton. It’s a mod I could see myself doing.
People like me with osteoporosis care about weight. The weight of the bike is the combined weight of all the parts of the bike, so a 100g here and there adds up.
Beautifully done. I think you may have forgotten about mentioning the new chain length. That Scram shifter certainly looks far better built. You are a real authority Hannah.
Thanks for watching!
Emmmn well for now we have kept the same chain! Thought we would recommend an 11 speed! I just think a longer chain might be too long!
Thanks for the reply 😊
@@brilliantbikeshi, does it mean I can keep the chain unchanged while adding an addition 21 sprocket? Thanks.
Hi Hanna, I’ve just upgraded my P line 12 speed to 15 gears!! I bought the Brommie+ kit sold on your website which converts the existing shifter on the Brompton and the recommended cassette (using the first 5 cogs only, 11-21 cogs). This is a far neater solution than buying a third party shifter. I was also puzzled why you didn’t mention replacing the chain as you mention it as a necessary part of the conversion. In the end suspected that using the existing one was going to work. And so it did. Although indexing the gears was far harder than the videos demonstrated, even referring to the one put out by the guys who sell the kit at Brommie+. In the end after some hours and frustration of tinkering it started to come together.
Just one tip I would offer after all my struggles. When routing the shifter cable through the end clamp and that darn pesky final hole, it is far easier i found to tun the bike upside down, resting it on it handlebars and seat. This gives you a much clearer view of the clamp and final routing hole for seating the cable correctly. It’s so easy to think that the cable is seated correctly when not having a clear, unrestricted view, when in fact it is only half clamped and just ‘pinched’ in place. The problem then arises when after a little bit of tension, the cable starts to move due to not being properly clamped. Hope this helps? Kevin
Beautifully illustrated “ how to” walk through .. looks like a really useful upgrade😊👍
Thank you and thank you for watching!
Nice tutorial, Hannah. I watched it till the end; although I won’t need it. I was just curious… 🌺🤩🌺
Thank you for watching! Glad it was interesting, even if you so t want to do it 😀
Great Video Hannah been wondering when this would come out after your last post mentioned it. Really great idea. I had hoped to convert my T line to 12 speed but given this video think I’ll go XT 5 speed awesome.
Thanks for watching! It is a nice difference and was really simple to do 😀
So funny that I should come across this video - after having just returned from paying for my 4 speed T line! I said to the shop owner (a friend) that I would go with the 4 speed rather than 12 (with that heavy antique hub), as I could easily see the massive spacing between the gears would allow more to be fitted - my 11 and 12 speed bikes are a much closer fit!
Really helps seeing what brand(s) fit direct too; especially as it means I already have tools. Thank fudge that Brompton did not use a bespoke design! And of course (and another reason why I didn't want the hub gears), as you have done, the selector can go on the correct side! 😅 I may at a later date (as a commenter has said) fit a twin chainring crank, but given the money I just paid for this beautiful bike, with parts like carbon cranks, I probably won't. 😉
Loving the vids and the out-takes at the ends. Keep up the good work. Regards, darth.
Thank you for watching and for the comments! Hope you enjoy your new bike!
Hi, I am planning to make such modification. I would like to know if the original tensioner guilding can do the job moving freely in/out between 11-21t sporkets. And if need adding the chain length?
Another interesting and fun video. I’m more than happy with my 6 speed b b yellow c line, but look forward to your videos. Panda.
Thanks for watching!!
Fffff.... Made my day. Thanks H 😊. And another fab instructional video.
Thank you for watching! Glad it helped!
Such discipline - only the F slipped out. Now I have a problem. Shall I or shan't I have a 5 speed P line....
Thank you sharing . I dont understand all of it . But it is therapeutic watching
Thank you for watching!
Now this is interesting. A 5 speed Pline AWESOME. Your channel rocks!!
Thank you!!! And thanks for watching!!
Hi Hannah, great video and very useful. I’m in the process of buying a Brompton P line and haven’t decided yet whether to go for the 12 or 4 speed. I wonder if this upgrade can be done to the cassette on the 12 speed? giving overall 15 gears? I’d really appreciate your comments. Thanks Kevin
Thanks so much Hannah - for developing this mod and for explaining it so well. I’m assuming it works for the Ti4 too. Love mine to bits it’s just occasionally when I’m out of town I’d like a lower geared option without going down the 12 speed route…😀😀
Thank you for watching!
We have had people fit it on a T Line
If you want to pop in and see if you like the difference feel free to come and try my PnLine 😀
@@brilliantbikes thanks….will be good to see the new shop too. 😀
With 2023 P-Line 21T sprocket works. With 2024 Version the jockey wheel touches the 21T sprocket. But there is some play in the monuting of the derailleur. So we put some plastic approximately 1 mm thick under the back mount to bring the derailleur a little bit down. In case it doesn't help enough, there is an extension by H&H but I have no experience with this. My 13T sprocket startet jumping after 2700km (heavy driver, wax). For me Brommie+ conversion for the brompton shifter is working.
Brilliant video as always, this could be handy for me, making the hills easier, but I'd quite to stop spinning out on gentle hills with my CHPT3, need to think about that though👍
Thanks for watching! Tricky as if you want to stop spinning out then you might want a larger front chain ring, but that would counter act the larger sprocket…. 12 speed?
@@brilliantbikes it's a bit annoying that by the time I could get my hands on the CHPT3 it had become a very closely geared 4 speed, from 6, so it's spins out on the slightest decline.
Perhaps a 54 tooth front ring with your 5 gears on may work, I think the combination may be very slightly better for hills, I can't work the maths on that 😂😂 but it wouldn't spin out so easy.
As the P line now has 12 speed for not much more weight or money, but more gears that's annoying.
Although I didn't really want 12 gears, as I'd expect a few more issues with them and I'd have to see your review first.
Any idea when you will get your hands on one?
I can get up some decent hills on it, but I have my road bike & mountain bike for those rides I guess
Can this be done to the new C - LINE electric 4-speed? It seems to have the rear parts of a P line, non-titanium, of course.
This would help me on a few of the worst hills of my town. Unfortunately, the 12 speed c-line is out of reach of my budget … I got the new C-line 4speed electric for $1400 less than list price
Great video, but how was it to ride? And can I do this with my six speed? Love the out takes and the way you present this - wonderful charm and wit!
Thank you and thank you for watching. Sorry no it would not work on a C line as there is not enough room for the extra sprockets
6 speed work for me most of the time but the 5 speed hub seems a neat option for low maintenance, rather than lots of cogs gathering road debris.
Thanks for watching! We really must make a video on the 5 speed hub! They are just in short supply at the moment
Thanks 😊
Hi, i just saw this viedo. This is exactly what i want to do. Is this ok on 2024 12 speed line? 2 questions, 1, the original tensioner jockey wheel can move freely between the 11-21T? Any change on the chain length?
Thanks for the question and for watching. We used the same chain, although an 11 speed might be smoother. If using on a 12 speed you would need to convert the 4 speed shifter to 5 speed, as the derailleur shifter is on the right hand side. We have used:
brilliantbikes.co.uk/brompton-derailleur-parts-and-cables/6517-brommie-4-to-5-speed-conversion-kit.html
Is it possible to put on a 10 instead of 11 and one larger than 21? Still 5 total.
Hello guys,
Sorry I have been on the missing list, back now... an interesting and informative video, thank you.
Take care.
Paul,,
Thanks you for watching, glad you are not missing now :)
I take it that a Sram sprocket set won't fit the hub?
Hi Hannah, I upgrade my P line to 5-speed with BrommiePlus' 5-speed shifter conversion parts. It actually works pretty well.
Glad it worked well! Thanks for watching!
What’s a bromideplus , am I being stupid ?
isit difficult to diy with the BrommiePLus set?
@@KavanOBrienBrommie plus is a company on the internet that specializes in Brompton parts. I have used their parts to upgrade my 2019 Superlight to a 9 speed . Worked out great. Written instructions that they sent were excellent.
@@errz OK but could you give me an idea what it is ?
Hi Hannah, great video. I just bought all the necessary for the upgrade. As I have a 54T chainring, can I ask you how many links do I need for the chain? 104 or is it better 106?
Thanks for watching! Assuming you have 4 or 12 speeds then 104 is correct.
Excellent.
Thanks so much for watching!
Hi, what about installing a double chainring?
Thanks for watching! We have never really had much luck with a double chain ring and the bike folding.
@@brilliantbikes Thanks for your answer. I've also asked 2Bikes4Adventure and they are preparing a 1000 km review. :O
Really nice!! Does this also apply tot the T-line... Ik would be nice to have one extra light gear, for hilly rites.
Yes also works fine on the T Line 😀
Thanks for watching
Recomend lightly greasing the inner before feeding through the outer .
Thanks for watching and for the suggestion
Did you have to adjust the rear brake cable so it doesn’t hit the chain?
I know when people modify their cogs, it gets awfully close when you shift to the largest cog. At the beginning people were using zip ties to shift the brake cable over but by now there are several brands that sell a part that slightly shifts the cable over.
Many thanks for watching and for the question, we did not adjust it and so far have not had issues with it rubbing.
Are the spacers coming with the 11 speed Shimano cassette or did you add them ? thanks
Thanks for watching, they come with that cassette
Fab video thanks ....😅
Thanks for watching!
Hi Hannah, great video as always 😊
Can you recommend alternative shifters that are lighter than the sram ?
Would it be possible to use the shifter that is now installed as standard on the 12 speeds Brompton?
Thanks!
All the best to you
The SRAM X01, or XX1 which be lighter, but more expensive at £145 or £170....
You could use the shifter on the bike and adjust the indexing to use either the larger or smaller 4 sprockets, but it will not shift across 5 sprockets.
Thanks for watching!!!
A non indexing thumb shifter will work as a lighter and smaller shifter. It is actually pretty easy to shift an eleven speed with a friction shifter.
Have now done this conversion. I ended up (by mistake of not paying attention when ordering) with the SRAM SG 10 speed shifter! Same weight; same look; same 1:1 pull ratio, just cheaper to buy! 😅 I had some issues with cable length (the outer o.e.m. cable) that I have made a video of, and the rectification, that I may post if I thought there's any interest. Turning the steering to the right caused the gears to change!!!🙄
The change up and down is beautifully smooth but there is one downside... Coming from 5th to 1st it's very easy to forget what gear I am in and push the lever one more click. Because the derailleur is only plastic, regardless of the Stop screw, I have to be careful not to push the chain beyond 1st onto the hub! I might look into swapping the SRAM lever for the Brommieplus unit. Other than that, I might look online for an old 5 speed indexed lever, or open up the SRAM and put in a stop internally. 😆
Keep up the brilliant work (pun intended), darth.
Thank you and thank you for watching!
Thank you for your incredibly clear instructions, as always! I think I'll have a go at this upgrade on my T Line, but I have two quick questions beforehand: would you happen to know what would be a correct number of chainlinks, once this 21T sprocket is added? I have a 56T chainring, for information.
Furthermore, you installed your SRAM shifter on the right, as yours was a right-hand side one, but I wonder, don't they exist in left-hand side versions?
Anyway, your Cameraman and you are a treasure, keep up the great work!
Many thanks from France!
Wished I had a one to one pull ratio when I was younger , how much is the new shifter ? Do you sell them in you shop ?
cheeky !
Funny! Yes we do sell the shifter, cassette and chain. Links as follows:
brilliantbikes.co.uk/sprockets-cassettes/6041-shimano-cs-m5100-deore-11-speed-cassette-11-42t.html
brilliantbikes.co.uk/components/6352-sram-gx-11-speed-trigger-with-discrete-clamp-black.html
or in red
brilliantbikes.co.uk/components/6351-sram-gx-11-speed-trigger-with-discrete-clamp-red.html
We would also recommend an 11 speed chain
@@grahamricketts-bq1ft dying is easy, comedy is hard.
Hello, thank you for making this video. I need some advice. I followed your video today and upgraded my T line to 5 speed. However, I think I made a mistake during the process but this mistake didn't effect anything (at lease I didn't notice.) I used the first 5 sprockets of the Shimano Deore M5100 Cassette. However, Amazon sent me a 10 speed Sram GX10 trigger shifter instead of GX11 I ordered. I then ordered from another vendor the correct Gx11 shifter. However, during installation, I accidentally used the GX10 shifter instead of GX11 (they kinda look the same from the outside and box...) From what I read online, GX10 use Exact-Actuation and GX11 use X-Actuation. I kept the same chain and the original 50T chainring. After adjusting the limit screws, the shifting feels find and I don't see any issue with it. I rode 10 miles today and shifting was smooth. My question is that should I swap out the shifter to GX11 or just keep the GX10 since it's shifting fine? Thanks! Oh...I subscribed to your channel today!
Many thanks for watching!
I’d say Infiniti’s shifting fine then leave it!
Hi, I would really like to do this. I have a couple of questions though: did you consider going larger than a 21 tooth (e.g.24 tooth) Also is it necessary to change the existing Brompton sprockets because they are thicker than those from an 11-speed? Thanks, your tutorials are the business!
You’d need to buy a rear mech hanger to accommodate the 24t
Why didn't you just go with a 11,13,17,21 to get the larger ration without so much change to the bike, would the cogs hit the rear triangle?
Because the teeth are all ramped to help change, also we did not want a bite jump between the sprockets.
Thanks for watching!
@@brilliantbikesalso do you think that brompton will do a rear triangle upgrade kit for those who want to keep their current bike?
The jockey wheel will hit the sprocket, need to change to smaller jockey wheel (8t)
@@AnyTutorialsI currently have a 2 speed with a 12 tooth and a 19 tooth sprocket to get a wider ratio. I am within 5% of a p line gearing spread. And have made quite a few light weighting improvements.
love it.
Thanks for watching!
np - love watching your videos.@@brilliantbikes
I have a Brompton with 6 gears from 2012. Is there a way to convert it to a 4 or 5 speed?
The new 4 speed (which here we change to 5) Brompton setup actually uses a different (known as advanced or MK6) rear triangle to the 1 / 2 / 3 and 6 speed Brompton
You could change to a 5 speed rear wheel (internal hub gear)
Changing to 4 or 5 speed would mean replacing the rear triangle (which is currently only available as a titanium option other than on the Brompton electric)
@@brilliantbikes Thank you very much! A 5 speed hub sounds interesting if the gears are better useable than in the 6 speed. I do not need the 1st and the 6th.
it's brilliant 😬😬
Are the spacers coming with the 11 speed Shimano cassette or did you add them ?? 🙏🏽
Thanks! Thanks for watching!
@@brilliantbikes Are the spacers coming with the 11 speed Shimano cassette or did you add them ?? 🙏🏽
I think a better option is going 11-13-16-21, same gear range and can keep the same shifter!
Thanks for watching, if you are happy with a big jump and it shifts Ok then of course that's an option
Hi Hannah, thanks for your new great videos. I have a 12-speed P-line, which could be turned into a 15-speed if my math is right 😃. The problem would be to find a new shifter which could be placed on the left of the handlebar, like the original one. Do you know if this exists?
Thanks for watching! We are working on the shifter solution to make this happen.
Great, I’m looking forward to your solution! It would be really great…
The problem is that you'll have 3 gears almost identical.
@@heuer73 Same for the 12 speed, but it’s manageable. It would be cool to have 5 speeds on direct drive, and a very low gear for climbing when loaded for touring
@@veyrethomas3934 yes, I get your point. You would have a 25 inches low gear.
I like the idea of keeping the original shifter. Would I need to change the chain each time I used the top or bottom four gears? Cheers 👍
Thanks for watching. We used the same chain as the chain tensioner has a lot of tie in it, so found it fine
@@brilliantbikesthank you so much for the reply. Cheers 👍
After a few months, long term review would be great. Also, have you experienced the same issues with P-Line as The Brompton Guy?
Great vid.
Apparently, you can fit 7; sprockets on to the standard wheel's hub.
You can fit 7 only on the stock hub if you have a cassette with a unibody design. These types of cassettes are not cheap either. Some aftermarket rear hubs will allow 7 cogs, but it will be significantly more work.
What do you mean by "unibody design"?
@@anthonylloyd6094 multiple gears are welded together which, for a Brompton, allow the gears to extend beyond the freehub and over the spokes of the wheels. That’s how you get gears 6-7 on a stock hub.
How much easier was the climb up your ‘Steep Hill’ with the 5 Speed compared to the 4 Speed?
Also, please could your hard working cameraman consider making a ‘Christmas Special’ of your out-takes😁?
😂! He keeps threatening to make an out takes video!
It was a lot easier, I was surprised!
The most elegant upgrade you can give your Brompton is to make it a single-speed.
The simplicity! Thanks for watching!!
Single speed bikes are obsolete
Almost dropped the F bomb 😅
LOL I was a little cross with myself for messing up some words, again... Thanks for watching!
Yeah, it’s like that one guy commented. She never gave an overall review of the difference between a five speed and the four speed on hills. I mean the difference to negligible my opinion make a real difference go to 21 speed.
I did add a bit of a summary, I was surprised at how much difference it made up the hills! Please rewatch the end 😀
Thanks for watching!
Sorry I forgot we did the ride video first!
@@brilliantbikes oh yeah, that’s right you did comment on the effort value on pedaling at the end. I jumped the gun too quick.😉 But the better question is don’t you also have a 12 speed as well so what’s the point of the six speed then I guess 🤷♂️
Does this mean you can now make the new 12-speed Brompton into a 15-speed? Asking for a friend 😉
Thanks for watching!
We are working on a solution for the shifter, as it needs to be left hand to keep the hub gears on the right
Brilliant bikes does sell a left hand shifter for a 5 speed conversion. This is made by Brommie+ (Brommieplus). I’ve bought this shifter it works very well, no problem. I’m not sure why Brilliant bikes don’t promote that as a conversion as it very elegantly take the 12 speed P line up to 15 gears. (5 external and 3 internal). Mine works very well and you retain the original shifter, no need to buy a Sram shifter or any other third party component. You still need to purchase the 5 cogs as mentioned in this video. The Brommie+ shifter kit costs about £55. It only took me about 45 minutes to do the conversion. The time consuming bit was indexing the gears later for smooth shifting but the end result is a joy. 15 Gears!! Bring on those hills…………..
Good idea this, but, but why not just change the chainring from that leg-breaking 52 tooth one. If you ride in hilly areas try the 44t chainring. I'm stuck with the 6-speed and now down to 40t costs £20 (stronglight). Old legs are here now.
Doing that you lose the higher gear because you shift everything down. If you a bit of a speed demon then that can be annoying. Saying that changing to 44t is suiting me fine.
Thanks both for watching! Yes we did not want to loose the faster, smaller gearing, so really just wanted to add one larger sprocket
Thankfully, I have a 6-speed C Line. This upgrade looks far to difficult for me.
We also have and love our 6 speeds.
Thanks for watching!!
Disappointed! I thought you were going to install a 5 speed hub! You sell Brompton 5 speed hubs, would love to see you swap that onto a standard 3 speed hub Brompton. It’s a mod I could see myself doing.
Many thanks for the suggestion! Added to the list! I actually really want to ride one!
Auto subscribers 😅 funny ... I hope can buy this brompton .. i used camp hazy .. prudly product frome my country 😅 ..
Thanks for watching!
Who cares about a couple grams! Stop this nonsense fixation on weight!
LOL, we understand, but if we don't include it we get asked.
People like me with osteoporosis care about weight. The weight of the bike is the combined weight of all the parts of the bike, so a 100g here and there adds up.
You can choose Shimano 11-34T cassette, then you will have 25T.
Ultegra R8170 ok?