Eejit

I ordered these https://www.aliexpress.com/item/4000766198526.html But there are too many rounded surfaces and doesn't appear to anywhere to mount the magnet to give sufficient movement. Thinking of ordering this instead https://www.aliexpress.com/item/1005001776632704.htm

Nealh, that's fantastic. Thank you. Now just to figure out how to attach the brake sensors

Well finally got everything changed and working Got the 24V 250W / 36V 250W controller KT Torque Simulation Sine Wave Controller Julei Waterproof plug S06S controller with the LCD3, KT-V12L PAS and 130X throttle. The controller fitted nicely where the old controller sat and the motor cable matched up colour for colour with the original screen being used as the black wire. I did have to replace the bottom bracket for a 73mm x 127.5mm to fit the PAS. However, the P and C settings are proving a little obscure. P1 = 87, P2 = 1, P3 = 1, P4 = 0, P5 = 12 C1 = 6, C2 = 0, C3 = 8, C4 = 0, C5 = 10, C6 = 3, C7 = 0, C8 = 0, C9 = 0, C10 = n, C11 = 0, C12 = 4, C13 = 0, C14 = 2 The second issue is fitting the brake sensors. I know that some don't use them and would turn the battery off if the throttle stuck, rather that pulling on the brakes, but I'm considering doing the same mod to my wife Crossfire-E and she wouldn't have a clue. Can anyone suggest the correct parameters for this and the Suntour HESC 250W 36V motor and how best to fit the brake sensors to the TEKTRO Vela brakes?

Last question (I hope). You said best not a 12 magnet one for the PAS. What is the reason for this? I've been looking at the options and the KT-V12L PAS seems the simplest and tidiest option but am I missing something? What would be your recommendations for a PAS for the Crossfire?

I get the full 36V from the battery so the wires appear not to do anything unless they communicate with the BMS to shut the battery down under certain conditions so I can see is no issue there. Just need to snip and seal. The upgrade looks very straightforward except possibly the PAS. As I understand it, the Crossfire is fitted with an optical torque sensor. How straightforward is it to replace this with a PAS? I came across this thread regarding the torque sensor. Does all of this need stripping out? https://www.pedelecs.co.uk/forum/threads/carrera-crossfire-vulcan-torque-sensor.30490

Thanks guys, the Red, Blue & Orange go direct to the controller from the battery connector, along with the RED & BLACK power wires, so I've no idea what their function is. All the others are as vfr400 said fairly straight forward

Once again thank you vfr400. I 've opened up the controller to get an idea of what's going on. The battery connector is obvious with the +ve & -ve but what are the other three wires, red, blue and orange. What are these and are they needed for the KT system? The motor wires are the red, blue and green, but there are six other wires coming from the motor, green,blue, black, white, red and yellow. Again what are these and are they required? Almost ready to buy

That's fantastic. Thanks very much. A couple of questions. I assume that when you say "block connectors" you're talking about http://www.topbikekit.com/t06s-24v36v250w-torque-simulation-sine-wave-brushless-controller-for-ebike-p-443.html Why not 12 magnet one? more not better? So BZ-10C or 8PAS? I understand the present controller is in the battery holder at the bottom? Is there a guide on carrying out the replacement? I could probably work it out but a guide is infinitly better, especially for my 60+ year brain.

I haven't been able to repair my MK 2 Display and a replacement will cost approx £130. I have assumed that the problem with my cut-out has been the pin on the display but of course might not be. I've searched the forums and noticed that the electronics can be replaced with a KT system but I've not been able to ascertain what this system comprises of. I've seen mention of PAS, speed sensor and LCD3 but cannot find these. A link gives a 404 error. Does anyone have a definitive list for this kit and the links? I'd rather spend money to replace the electronics and have a working system than spend money on a new display that only MIGHT fix the problem.

The pins are spring loaded and you can see from the photo that pin 1 is depressed and not returning. I think that this is the issue with my cutouts as it happens only on my wife's bike when she has this display. I need to figure out how to split the case and see if I can repair it.

That's brilliant. Thanks. Hopefully when I get this pin sorted it might be the end of my cut-outs

Seems we've got MK1 then :-( Thanks

I bought both mine and the wife's Carrera Crossfire in July 2018. To be honest we haven't used them as much as we wanted due to family issues etc and so haven't experienced many cut out issues. The cut outs have been on my bike and seem to be related to pin 1 on the display getting stuck on the down position. I see that there have been a number of changes to the Crossfire but how do I know whether we've got MK1 or MK2?