Hey 300 guys I have a question for you. I am in the process of swapping a 2014 ninja 300 abs engine into a Z-125. I am not altering any of the wire harness except for the lights and turn signals. I am gearing the smaller wheel to a 32tooth 520pitch sprocket so the speed/gearing ratio will be identical to the stock 300 wheel. My question has to so with the ABS. Does anyone know if the ABS brain receives a speed signal from the ECU? (off the output shaft from the engine) I assume the hydraulic module itself has accelerometers in it, but I need to know if the two are linked. If they are I will have to cnc machine new abs rings that go from the factory 50 slots down to 37 slots so the abs brain knows the actual speed of the bike due to the smaller tire diameter. I assume I'll throw a CEL or fault code if this is the case. If they do not talk I will just leave the factory ones in and let the brain think the bike is traveling faster than actual speed. But that leads to me my last question as to how the brain knows at what speed to stop the pulsing, such as when your stopped at a light the system is not continuing to pulse the calipers. Thanks to anyone who understands this particular system better than I do!!!
Hi colleague. I`m swapping ABS unit into Honda Hawk GT 650 (Bros 650)
ABS doesn`t take any signal from ECU or engine - it have even two sets of sensors to measure the speed.And i`m not sure if it has accelerometers on ninja 300 - it`s
simple ABS design, not controlling lean/wheelies at all, it has two speed sensors..
About your wheel size example - for example your wheels total diameter is twice smaller than Ninja 300 , so you if you will put same rings as on it . they reach 20km/h (when ABS , assume, start working) on 10 km/h actually and all way ABS will think you move twice faster then you actually are.
But if you reduce number of slots on ABS rotor two times (as well as wheel size reduced twice) ABS will know actual speed correctly.
So main idea - keep same amount of impulses during movement as it`s generated on Ninja 300, No errors if front/rear impulse amount RATIO is correct , if amount of pulses on front and rear for any reason (number of slots or speed) increases on same multiplier - abs works fine, just thinks you moving faster than you actually are.
PS: Can you share how you wire up ABS unit ?
I`ve wired it , but it does not generate any signal to ABS LED indicator after powering on, and only have power on rear sensor, nothing on front. I`m think unit is broken, so trying figure out how it works on same conditions - without connection to original meter unit etc.