Rudge 'Bi-Frame' -a 'Proper' Folding Bike....?
Posted: 11 Sep 2012, 3:54pm
My latest little project is not so much a 'proper folding bike' as (I hope) a 'proper bike' that folds a bit.
It is a Rudge (Montague design) 'Bi-Frame' model, in a desperately tatty state.
'Before' photos below.
It has a number of interesting features including;
- frame made from US-produced True-Temper tubing, neatly TIG welded mostly, with brazed fork ends etc.
- two bottle mounts positioned to avoid the fold.
- folds down (enough to take on a train) in about five seconds.
- folds down fully (e.g. to fit into a small car) in about fifteen seconds, both wheels out.
- frame is probably about 1lb heavier than other non-folding inexpensive steel frames.
- frame has grease nipple for lubrication of nesting seat tubes
- frame hinge is secured with a pair of QR levers, backed up with a spring loaded bolt that looks like it escaped from the garden shed.
- components mostly cheap and worn.
- seat angle is unusually laid back because of frame design; front mech was originally braze-on because band-on would be at slightly the wrong angle.
- original braze-on mounting for the front mech has been removed.
After a certain amount of wrestling I managed to work the frame hinge, which clearly hadn't been moved in a long while. I added fresh grease and watched 'three shades brown' come out. I'm now wondering what to do with it exactly. I guess I should stick with rim brakes and derailleurs because the rear wheel has to come out quickly. I quite fancy building it up with basic but functional components (say 1 x 8 speed), 26 x 1.5 " road tyres, and using it for commuting or train/car-assisted day rides. Some kind of flat or slightly raised bar would be about right because the frame is otherwise about 2" smaller (but not shorter length-wise) than I'd use otherwise. All suggestions welcome.
One thing I will need is a long (300mm+ ) aluminium seat post in 26.0mm dia. Anyone got one they don't need?
Anyone have any experience of these monstrosities? Do they ride like they, er, have a hinge in the middle...?
cheers
It is a Rudge (Montague design) 'Bi-Frame' model, in a desperately tatty state.
'Before' photos below.
It has a number of interesting features including;
- frame made from US-produced True-Temper tubing, neatly TIG welded mostly, with brazed fork ends etc.
- two bottle mounts positioned to avoid the fold.
- folds down (enough to take on a train) in about five seconds.
- folds down fully (e.g. to fit into a small car) in about fifteen seconds, both wheels out.
- frame is probably about 1lb heavier than other non-folding inexpensive steel frames.
- frame has grease nipple for lubrication of nesting seat tubes
- frame hinge is secured with a pair of QR levers, backed up with a spring loaded bolt that looks like it escaped from the garden shed.
- components mostly cheap and worn.
- seat angle is unusually laid back because of frame design; front mech was originally braze-on because band-on would be at slightly the wrong angle.
- original braze-on mounting for the front mech has been removed.
After a certain amount of wrestling I managed to work the frame hinge, which clearly hadn't been moved in a long while. I added fresh grease and watched 'three shades brown' come out. I'm now wondering what to do with it exactly. I guess I should stick with rim brakes and derailleurs because the rear wheel has to come out quickly. I quite fancy building it up with basic but functional components (say 1 x 8 speed), 26 x 1.5 " road tyres, and using it for commuting or train/car-assisted day rides. Some kind of flat or slightly raised bar would be about right because the frame is otherwise about 2" smaller (but not shorter length-wise) than I'd use otherwise. All suggestions welcome.
One thing I will need is a long (300mm+ ) aluminium seat post in 26.0mm dia. Anyone got one they don't need?
Anyone have any experience of these monstrosities? Do they ride like they, er, have a hinge in the middle...?
cheers