Cycling UK Forum

I have successfully upgraded my 3 speed brompton to 6 speedby fitting a double chainring,a new b/bracket spindle and a chain tensioner..Some engineering is required ie,brazing and silver soldering.A front changer fitted on a bracket made up from a 28mmx22mm copper reducing fitting ,although a piece of seat tube cut to size will do.These parts are brazed onto a bracket incorporating the parts and the made into a clip to fit onto the tube below the seat pin.The chain tensioner is a jockey wheel fitted to a bracket on the rear folding frame and secured via a 4mm bolt.The gear and brake arrangement can be via a combination brake and gear lever or a twist grip.Two version have been made and one has been tested on a 25 mile ride without any problems.I will endeavour to put the photos on to this site soon.

Any chance of some pictures?

Is it a manual change or is there a front shifter?

Very interesting - look forward to seeing the images

Cheers

CU

Unable to insert pics. For pictures contact magnetson@yahoo.co.uk

Hoping to insert pics tonight or tomorrow.The gear change is via either combined gear/brake lever or twist grip.

For pictures contact magnetson@yahoo.co.uk Cannot insert pics on forum

I think folks have had problems before in uploading images - maybe this posting might just prompt some assistance?

Cheers

CU

Just host the pictures somewhere like Flickr or Photobucket and link to them.

Found a link:

viewtopic.php?f=14&t=25153

Hope this helps

CU

caer urfa wrote:I think folks have had problems before in uploading images - maybe this posting might just prompt some assistance?

Cheers

CU

Hi there,pics are available by email to magnetson@yahoo.co.uk

caer urfa wrote:Very interesting - look forward to seeing the images

Cheers

CU

picsavailable from;www.magnetson@yahoo.co.uk