Author Topic: Brompton outer cable lengths  (Read 12252 times)

Brompton outer cable lengths
« on: August 29, 2009, 11:19:18 am »
Add to this if you know any others: this information is stupidly hard to find, and it saves buying expensive pre-cut Brompton cable sets.

The exact measurements are on the instructions that come with each cable, or you could measure one that is definitely known to be correct.

M-type, SWB rear brake cable: 1303mm
M-type, SWB rear hub gear cable: 1288mm

The LWB M-type rear cables are approximately 8mm longer (although the wheelbase is more like an inch longer).


Never tell me the odds.

citoyen

  • Cat 6 Racer
Re: Brompton outer cable lengths
« Reply #1 on: October 06, 2009, 10:07:42 am »
Don't suppose you know the correct length for a front brake cable for an M-type? That's the one I need to know.

d.

Re: Brompton outer cable lengths
« Reply #2 on: October 07, 2009, 09:20:53 pm »
Same for SWB and LWB.  Comes in two separate lengths with the cable gatherer sandwiched in between.  But I don't know the actual lengths - I could try and measure, since it's slightly less critical than the rear cables (these don't sit neatly alongside each other, or they foul the chain, if they're not exactly right).
Never tell me the odds.

citoyen

  • Cat 6 Racer
Re: Brompton outer cable lengths
« Reply #3 on: October 07, 2009, 11:14:49 pm »
Only asking out of curiosity, really. Like you say, precise length for front is less critical than for the rear, though I know my front cable is too long - needs at least a couple of inches cutting off.

d.

Charlotte

  • Dissolute libertine
  • Coffee snob and pencil fetishist
    • charlottebarnes.co.uk
Re: Brompton outer cable lengths
« Reply #4 on: June 09, 2010, 07:55:05 am »
So from this, I take it that I can use the reel of M-Part cable outer I've just sprung for, along with similar cheap generic cables?  That would be a bonus; although the cables are a bit rough, I wasn't going to do them before the BWC.  Now I might...
Commercial, Editorial and PR Photographer - www.charlottebarnes.co.uk

Re: Brompton outer cable lengths
« Reply #5 on: June 09, 2010, 07:58:12 pm »
Yes, but measure the old outers to the millimetre.  Also, if you move the shifter or the brake levers, it messes up the neat cabling.
Never tell me the odds.

iakobski

Re: Brompton outer cable lengths
« Reply #6 on: June 19, 2010, 04:22:15 pm »
QGCABDR-S

LWB, S-Type, Derailleur cable, Brompton trigger/bell

Outer: 1145 mm
Inner: 1269 mm

Re: Brompton outer cable lengths
« Reply #7 on: April 08, 2011, 12:03:30 pm »
QGCABDR-S

LWB, S-Type, Derailleur cable, Brompton trigger/bell

Outer: 1145 mm
Inner: 1269 mm

Interesting. Mine is also an S-Type: 3 speed: LWB: but my Housing (125cm) and inner cable is much longer. The stats you posted is what I found they sold at the local store. Though it seem to short for me.

I doubt there any difference from the the brompton shift housing to others( long strands of wire which run parralell to the shift housing): since their made from SRAM. I'm contemplating to cut my own. After all the only differences are:


    YouTube
        - How to Lubricate Brake and Shift Cables
 


Or am I missing something?

iakobski

Re: Brompton outer cable lengths
« Reply #8 on: April 09, 2011, 09:52:49 am »
Is yours 3-speed or 6 speed?

Re: Brompton outer cable lengths
« Reply #9 on: April 09, 2011, 09:07:26 pm »
3 speed. It was a bespoke Brompton - made to order. I've upgraded the Jagwire to Shimano(shift cable) and waiting for the inner wire(brompton) to be ordered.

Re: Brompton outer cable lengths
« Reply #10 on: April 13, 2011, 10:55:07 pm »
2009 LWB.

The inner wire for the 3-speed cable (on an S type bike) is 1411mm long and the outer cable is 1250mm long.

Re: Brompton outer cable lengths
« Reply #11 on: April 09, 2012, 02:48:56 pm »
QBRCABRA-S

Rear brake cable, brompton lever, LWB, S-Type

Outer = 1230 mm
Inner = 1447mm
Quote from: tiermat
that's not science, it's semantics.

LittleWheelsandBig

  • Whimsy Rider
Re: Brompton outer cable lengths
« Reply #12 on: December 11, 2016, 03:06:46 pm »
QGCABDR-M

Derailleur cable, M-bars, LWB.

Outer = 1187mm
Inner = 1309mm
Wheel meet again, don't know where, don't know when...

LittleWheelsandBig

  • Whimsy Rider
Re: Brompton outer cable lengths
« Reply #13 on: December 11, 2016, 03:09:59 pm »
QBRCABRA-M/P

Rear brake cable, inclined plastic brake levers, M-bars or P-bars, LWB.

Outer = 1319mm
Inner = 1447mm
Wheel meet again, don't know where, don't know when...

LittleWheelsandBig

  • Whimsy Rider
Re: Brompton outer cable lengths
« Reply #14 on: December 11, 2016, 03:13:17 pm »
QBRCABFA-M/P

Front brake cable, inclined plastic brake levers, M-bars or P-bars, LWB

Outers = 389mm and 485mm
Inner = 1000mm
Wheel meet again, don't know where, don't know when...

LittleWheelsandBig

  • Whimsy Rider
Re: Brompton outer cable lengths
« Reply #15 on: December 11, 2016, 03:15:57 pm »
QBRCABFXA-S

Front brake cable for LH front lever, inclined plastic brake levers, S-bars, LWB

Outers = 303mm and 473mm
Inner = 979mm
Wheel meet again, don't know where, don't know when...

LittleWheelsandBig

  • Whimsy Rider
Re: Brompton outer cable lengths
« Reply #16 on: December 11, 2016, 03:18:30 pm »
QGCAB3A-M(3)

Hub gear cable, M-bars, LWB

Outer = 1302mm
Inner = 1463mm
Wheel meet again, don't know where, don't know when...

LittleWheelsandBig

  • Whimsy Rider
Re: Brompton outer cable lengths
« Reply #17 on: December 11, 2016, 04:34:58 pm »
QBRCABRXA-S

Rear brake cable for RH rear lever, inclined plastic brake levers, S-bars, LWB

Outer = 1255mm
Inner = 1467mm
Wheel meet again, don't know where, don't know when...

LittleWheelsandBig

  • Whimsy Rider
Re: Brompton outer cable lengths
« Reply #18 on: December 11, 2016, 04:38:43 pm »
QBRCABFA-M(3)

Front brake cable, 10 degree brake lever, M-bars, LWB

Outers = 389mm and 485mm
Inner = 1050mm
Wheel meet again, don't know where, don't know when...

LittleWheelsandBig

  • Whimsy Rider
Re: Brompton outer cable lengths
« Reply #19 on: December 11, 2016, 04:42:13 pm »
QBRCABFA-S

Front brake cable for inclined levers, S-bars, LWB

Outers = 332mm and 455mm
Inner = 1050mm
Wheel meet again, don't know where, don't know when...