Last edited by NigelHealy; 12-29-11 at 06:20 PM.
Nice set up, I particularly like the grips.
Excuse my Brompton ignorance,
"* Longer wheel base also for lower position and less knee-banging when riding out of the saddle"
But is this a long wheelbase model or did you make some kind of modification to increase the the wheelbase?
The Brompton extended its wheelbase by an inch in late 2003, a few months after I got my first Brompton.
Originally Posted by rex615
The current frame+Sbar produces the same geometry as a roadbike when comparing the grip area of Sbar with the top position of a drophandlebar, the Ergon bar-ends produces very similar position to hands facing forwards on the brake hoods of a drophandlebar. What you're lacking is the few inch lower position for downhills.
Last edited by NigelHealy; 12-29-11 at 10:56 PM.
Mk 4 main frame is longer than the Mk 2. the inch was probably added 1/2 on each side of the hinge.
the new H stem did 30 mm on each side , this year , for a 6cm added height..
One issue I see in Brompton's P bar is the lower drops position for going down hill
and into a headwind, is there, but if you have to hit the brakes ,
you have to move your hands. UP to get to them ..
Last edited by fietsbob; 12-30-11 at 12:29 PM.
I'm not using P-bars for exactly that reason. S-bars is lower than M-bars but brakes right by hands. Even with hands on the bar-ends shown I can touch the levers a little.
Originally Posted by fietsbob
I don't know why Brompton doesn't sell P-bar with a pair of brake levers connected, then I'd be interested, or someone make a kit, because even S-bars is higher than the dropped lower position on roadbikes.
I know some people who fit those arm-rests extensions.
Last edited by NigelHealy; 12-31-11 at 04:43 PM.
B's M bars are fine by me, at my height. about goldilocks for an Old guy.
though I've seen pictures of substituting a Modolo Dumbo adjustable trekking bar
for M bars , on that stem, though some clamp bolt loosening
is definitely needed.. to fold down that bit of kit.
QBP has doubler parts to use 2 levers for one brake, so You could do that.
Brompton's designs seem pretty conservative, , think about it a long time
before making subtile changes ..
Hinge plates for example . from forged and hand fillet brazes
with a skilled person trained to do that job,
to A Cast hinge , added someone to machine each casting,
but the brazing is done with a torch array , and so more efficient
in parts produced per day.
a few jigs get the job done, and I presume de skill the jobs, a bit.
Last edited by fietsbob; 12-31-11 at 06:28 PM.
Do the Ergon bar ends compromise the folding aspect? Does it drag on the ground when folded. I do not have the rear rack, so you may gain a little clearance?
on the M bar, M3L, I keep a 5mm wrench stuffed in the frame, head end,
and loosen the 1 bolt on the GC3, rotate 1 up, the other down,
and it latches fine. end no closer to the ground, then
Shorter bar end may not need loosening.. it misses latching by an inch
with the long Ergon bar end of the GC3
On M-bar, if the Ergon bar-ends when unfolded are horizontal, then they'll fit during fold but tilt the bike to the left as you fold then under.
On S-bar, loads-a-room.