Let's talk about a cost-no-object Brompton T-Line electric build. There are many ways to do this. The standard 4-speed T-Line weigh 17.5 lbs. One option is to buy the bike and leave as is. 4-speed gearing is too narrow and 12-speed gearing is a mess. Based upon what I've learned, 6-speed gearing on the Brompton T-Line is optimal. This means that the gearing on the T-Line would need to be replaced. Websites like "Brompton Kitchen" sell many upgrades for the T-Line. Not only can you replace the cogs and chainring but upgrade many T-Line parts to bring the weight down to 15 lbs, which would make a minimum difference on ride quality but would make the bike more portable and easier to carry up and down stairs. Let's talk about making the T-Line electric. The lightest option for the T-Line would be to add the Zehus 250 watt all-in-one hub at the rear, as used on the Hummingbird, single speed, 15.5 mph maximum. Based on my calculations, if parts on the T-Line are replaced to lower the weight to 15 lbs, the 7 lb. Zehus would hub would bring the weight to a featherweight 22 lbs., still super light for portability. There are, of course, other options. You can use 6-speed cogs or 9-speed cogs and a 52T chainring. You can retrofit a Rohloff hub on the rear and you can use a 250 Swytch gear electric hub and battery on the front. With 9-speeds or a Rohloff hub, together with a 250 watt hub on the front, this would allow the bike to achieve 30 mph top speeds on the flats with little pedaling effort, perhaps with a weight not exceeding 25 lbs. Of course, you can add a 500 watt front electric hub and large battery pack too which might defeat the purpose of buying the T-Line in the first place. If you were to electrify the T-Line, what would be your dream build and why? Thanks.
Hello David, some very interesting comments, we give all the answers in this detailed article. ecycles.blogspot.com/2024/03/brompton-t-line-12v-electric-kit-mkxi.html In that review you can see how we share similar opinions regarding 4, 6 or 12 speeds for a Tline. Regarding electrical conversions, we have more distant points of view. The Zheus system is very far from being the best option, it is a 30V system with a 155Wh battery that leaves the bike with a single mechanical speed and costs 3 times the price of this kit, which goes to 52V and has an integrated 52V battery. 185Wh and can carry a second one of up to 2000Wh, something similar to the Swhitch that has a ridiculous 36v 90Wh battery.
@@ViVoBikes Thank you for your reply and the link to your article. I don't understand why Brompton doesn't offer the T-Line as a 6-speed with 300% range. I understand more about your conversion now. Like most e-bike motors, does yours automatically turn off at 25 km, as is EU law? Or can you continue to pedal at high speeds in a high gear with the motor on? It would be great to pedal at 48 km. Also, your kit has an integrated 12V battery at 185 watts? Without the extension is this lighter than the Zehus hub? For, me keeping a T-Line e-bike superlight would be the top priority. I would love to test ride this bike of yours. Intriguing and impressive.
Sorry David, the battery is 52v 185Wh, the speed is adaptable to the country's legislation, there are countries where there is no limit. He would love the bike, without a doubt,
En esta bici solo lo puede hacer con garantías un profesional con experiencia, en estos momentos 3500Km sin problema. Es un trabajo muy deliicado no lo haga si no sabe lo que hace
Let's talk about a cost-no-object Brompton T-Line electric build.
There are many ways to do this. The standard 4-speed T-Line weigh 17.5 lbs. One option is to buy the bike and leave as is. 4-speed gearing is too narrow and 12-speed gearing is a mess. Based upon what I've learned, 6-speed gearing on the Brompton T-Line is optimal. This means that the gearing on the T-Line would need to be replaced.
Websites like "Brompton Kitchen" sell many upgrades for the T-Line. Not only can you replace the cogs and chainring but upgrade many T-Line parts to bring the weight down to 15 lbs, which would make a minimum difference on ride quality but would make the bike more portable and easier to carry up and down stairs.
Let's talk about making the T-Line electric. The lightest option for the T-Line would be to add the Zehus 250 watt all-in-one hub at the rear, as used on the Hummingbird, single speed, 15.5 mph maximum. Based on my calculations, if parts on the T-Line are replaced to lower the weight to 15 lbs, the 7 lb. Zehus would hub would bring the weight to a featherweight 22 lbs., still super light for portability.
There are, of course, other options. You can use 6-speed cogs or 9-speed cogs and a 52T chainring. You can retrofit a Rohloff hub on the rear and you can use a 250 Swytch gear electric hub and battery on the front. With 9-speeds or a Rohloff hub, together with a 250 watt hub on the front, this would allow the bike to achieve 30 mph top speeds on the flats with little pedaling effort, perhaps with a weight not exceeding 25 lbs.
Of course, you can add a 500 watt front electric hub and large battery pack too which might defeat the purpose of buying the T-Line in the first place. If you were to electrify the T-Line, what would be your dream build and why? Thanks.
Hello David, some very interesting comments, we give all the answers in this detailed article. ecycles.blogspot.com/2024/03/brompton-t-line-12v-electric-kit-mkxi.html
In that review you can see how we share similar opinions regarding 4, 6 or 12 speeds for a Tline.
Regarding electrical conversions, we have more distant points of view. The Zheus system is very far from being the best option, it is a 30V system with a 155Wh battery that leaves the bike with a single mechanical speed and costs 3 times the price of this kit, which goes to 52V and has an integrated 52V battery. 185Wh and can carry a second one of up to 2000Wh, something similar to the Swhitch that has a ridiculous 36v 90Wh battery.
@@ViVoBikes Thank you for your reply and the link to your article. I don't understand why Brompton doesn't offer the T-Line as a 6-speed with 300% range. I understand more about your conversion now. Like most e-bike motors, does yours automatically turn off at 25 km, as is EU law? Or can you continue to pedal at high speeds in a high gear with the motor on? It would be great to pedal at 48 km. Also, your kit has an integrated 12V battery at 185 watts? Without the extension is this lighter than the Zehus hub? For, me keeping a T-Line e-bike superlight would be the top priority. I would love to test ride this bike of yours. Intriguing and impressive.
Sorry David, the battery is 52v 185Wh, the speed is adaptable to the country's legislation, there are countries where there is no limit.
He would love the bike, without a doubt,
I am quite satisfied with this aikema(AKM85SX(F1) motor, its rated current is around 500w.
Es motor no es adecuado para la Tline
Any issues with the carbon fork cracking? Everywhere I look, people say it's not recommended, but have no proof.
En esta bici solo lo puede hacer con garantías un profesional con experiencia, en estos momentos 3500Km sin problema. Es un trabajo muy deliicado no lo haga si no sabe lo que hace
Where can i buy something like this?
only spain at the moment
@@ViVoBikes like via a website?
How much weight is this? what kg?
activate subtitles, it is described
12Speed T-Line: 11,9kg
4Speed T-Line: 10,5kg
1Speed T-line: 10,5kg
The battery is included...
Motor on front carbon fork? Not good!
It is made by a professional, it works perfectly and it is safe.