1200 Front Abs On Gravel ?

Discussion in 'Multistrada' started by mak24seven, Jul 3, 2016.

  1. Had a fantastic run out today on the multi, while pulling over for a smoke brake onto a freshly gravelled lay bye I thought I would see if the abs kicks in, it didn't lol.
    Now let me be honest hear and just admit to jamming the front brake on at no more than 7-8mph, the front just locked up and skidded to a halt, tried it a couple of times and the same result, no pulsing through the lever either. This was still in sports mode if it makes any difference.
    I am thinking the speed is far to low to cover any distance and this is probably correct or should I have felt or herd something else as opposed to just the front tyre skidding to a stop?
     
  2. May be its set to off or almost off in sports mode
     
  3. I am guessing at the speed I jammed the brake on it has not enough distance to activate, not keen on hitting the front brake at 15mph on loose gravel to test it though lol
     
  4. Check the settings, could be in sports its off.

    When mine has come on in the past its been under fairly sustained pull, ie emergency braking, so a short jab may not bring it on if you let it straight off?
     
  5. No its definitely on, I think it reverts back to on automatically when the bike is turned off and back on again. It was not a short jab on the lever, I held it on until the bike had stopped .
     
  6. ABS is not enabled at low speeds, not sure the exact speed but below 10 - 15 mph aprox
     
  7. Why ?
     
  8. I think it is a much lower speed than that, about 5 - 6 mph. The ABS light goes out after a start up when the bike reaches about walking speed.
    Why? Presumably the pulses from the sensors aren't frequent enough at these low speeds for the system to anticipate a wheel lock up.
     
  9. I wouldn't expect the speed to make any difference. Assuming it's on, if the front wheel is locked and the rear is still turning the ABS should, in my view, be activated.

    I'd get it checked out.
     
  10. If an ABS system was set to release the brake whenever the wheel was locked regardless of the speed, the bike/car could never be brought to a standstill. There must be a minimum speed below which the ABS allows the brake to lock the wheel and does not release it. It would be nice to know what that minimum speed actually is. Does anyone actually know (leaving aside guesses)?
     
  11. one way to test which is a little safer - not much! lol - is to go over a short speed bump quickly and brake, this unsettles the front and in my experience activates the abs also because you are on tarmac typically is relatively easy and safer to recover...dont put the brake on too much before the speed bump though else you'll do an endo !
     
  12. Think is a % diff between front and rear wheel rotation and at small speed it's not large enough. At a guess.
     
  13. I'm sure that can't be right, the ABS pulses the brake on and off and stops functioning when the wheel is no longer locking up. It certainly extends the overall braking distance but the vehicle will stop.
     
  14. From the MTS1200 Technical Manual :
    ABS functionality is disabled at vehicle speeds lower than 5 km/h.

    Also :
    Warning
    If the vehicle front wheel remains off the ground for a prolonged period while the vehicle is in motion, the
    speed difference detected between the two wheels causes an ABS fault (warning light activated) and makes it impossible for the control unit to establish a reference speed.
     
  15. Just like my bloody wife... Ruining a perfectly good debate with hard facts!! :blush:
     
    • Funny Funny x 1
  16. I took my gs into my field and just tried everything. Wasn't long until I switched everything off. Good fun but no motocross bike.
     
  17. you have a field ?
     
  18. Yeh, just rode around , everything worked because I couldn't get anywhere. TC is very intrusive
     
  19. Manual suggests it's a speed differential thing then not detection of locked front wheel
     
  20. naa, cant be because I can lock my back wheel and feel abs kicking in...
     
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