Facebook Twitter LinkedIn Pinterest Bluesky Threads T Line with Dura Ace 7 speed 11-28T. Finally, my quest for perfect shifting is over… by JofArnold Bicycle Bicycling Bike Biking Brompton Bicycle Brompton Bike Brompton Folding Bicycle Brompton Folding Bike Cycling Folding Bicycle Folding Bike
JofArnold on July 10, 2025 3:56 pm Obviously not quite as fancy as [Phillip’s machine](https://www.reddit.com/r/Brompton/comments/1lwc75c/crazy_build_i_saw_on_marketplace_this_week_not_my/) but really happy with it. It’s been a long journey trying everything from extenders, to H&H, RUHM, L-TWOO, a [2×5 mod](https://www.reddit.com/r/Brompton/comments/y9q3a9/finally_my_10_speed_2x5_brompton_t_line_conversion/) and even designing and making my own RD. But in the end simple is often the best. The crisp and fast shifting totally changes the bike… it also folds surprisingly well with some sneaky 3D printed parts here and there to stop the chain getting jammed or dropping. Hanger is my design (a later variant of the one I posted [here](https://www.reddit.com/r/Brompton/comments/1k2s3i0/anyone_in_uk_interested_in_a_titanium_t_line_p/)), machined from titanium so it blends in a bit nicer. (PS apologies for posting this twice already; got errors from Reddit)
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Obviously not quite as fancy as [Phillip’s machine](https://www.reddit.com/r/Brompton/comments/1lwc75c/crazy_build_i_saw_on_marketplace_this_week_not_my/) but really happy with it.
It’s been a long journey trying everything from extenders, to H&H, RUHM, L-TWOO, a [2×5 mod](https://www.reddit.com/r/Brompton/comments/y9q3a9/finally_my_10_speed_2x5_brompton_t_line_conversion/) and even designing and making my own RD. But in the end simple is often the best.
The crisp and fast shifting totally changes the bike… it also folds surprisingly well with some sneaky 3D printed parts here and there to stop the chain getting jammed or dropping.
Hanger is my design (a later variant of the one I posted [here](https://www.reddit.com/r/Brompton/comments/1k2s3i0/anyone_in_uk_interested_in_a_titanium_t_line_p/)), machined from titanium so it blends in a bit nicer.
(PS apologies for posting this twice already; got errors from Reddit)