Archive for the Brompton Category

16 speed Brompton: part 7 – clearances

  1) Tyre tread to fork cross piece. The tyre is a Schwalbe Marathon pumped up to near normal pressure. The cross piece is the one at the bottom of the triangle next to the rear hinge. The bike is upside down in this picture. The rear triangle has been opened out to accommodate a […]

The fork spreading tool

Here are a couple of pictures of the tool I used to spread the rear forks on our Bromptons. Materials required 1 x piece of thick walled mild steel tube, outside diameter 12mm 1 x piece of M8 mild steel threaded bar (minimum length 40 cm) 4 x large M8 washers 2 x small M8 […]


Here are some pictures of the piggy-back frame I made to allow me to carry Ortlieb panniers on my Brompton. This was a proof-of-concept frame I knocked up in a couple of hours with no access to tube bending tools. I never got round to tidying up the welds properly nor have I painted the […]

Bromptons on the Rallarvegen

Last weekend we decided to give our 16 speed Bromptons another test. The test was to cycle the Rallarvegen in Norway from Haugastøl to Flåm. We have wanted to do the Rallarvegen since we moved to Norway almost three years ago and the Bromptons would make getting back home on the train a little easier. […]

16 speed Bromptons: Part 5 – ready for action

Our 16 speed Bromptons are now just that. We built our own wheels earlier in the year and I then went through the process of getting everything to work together. I had already spread my rear forks a couple of years ago and did the same on Damae’s Brompton. A few tweaks were needed on […]

16 speed Brompton: Part 2

My SRAM gears have been having problems recently when back pedalling. The chain would go slack and then suddenly tighten up, or pull the chain off the chainwheel. It just didn’t feel right so I dismantled my Brompton and on checking the SRAM hub’s bearings I discovered I’d overtightened them. I loosened the bearings off […]