paul_lawrence

you might grace us with you prescence for the odd test, but I heard that Mr Bremner had scared you off.. you there on the 11th and 12th then? P

hi guys, yes, no luck but thanks for the help. It was a bit of a punt! The ZZR and newer bike engines tend to have mechanical gear selectors, but it apears that the ECU does do more checks than I hoped. Managed to source a speed sensor and will try to get it wired in before Kames. Just need to get it mounted and pointing at the propshaft bolts Wont be the same without you taking short cuts across the grass John Good luck in your new exploits... edit - just spotted Stephen's question - my Gi-Pro will allow me to trick the ECU into 4th gear - so no top speed issues other than the thing shaking itself to pieces... cheers Paul.

hi guys, this is all my fault Cheers Stephen, I thought he was better than me at this stuff, clearly not, but he has you lot to call I have a kitcar with a bike engine it which I am trying to compete with in the Hillclimb Championship. The previous builder/owner decided to chop the loom right back to the absolute minimum and has gone a bit too far. The car uses a 3rd party dash/speedo arrangement so the clever chappy decided not to include/wire up the speed sensor. On the ZZR1400 the ECU checks for a valid output from the speed sensor in two ranges - 0.05v to 0.09v (when I believe the sensor is not picking anything up) and between 4.5 and 4.9 v when it does. It sends 4 pulses for each full rotation of the engine. Right now I have an open circuit which the ECU determines to be an error and helpfully restricts itself to being in 6th gear to try and stop mad people trying to break the 200mph barrier by just cutting the wire. When I hit 9800rpm in any gear the ECU thinks it is doing 186mph and the rev limiter kicks in. Crazy stuff. My plan at this point is to try and send a constant voltage from one of the two ranges above and try to get the ECU out of 6th gear by giving it a valid reading although this would make it think that I am doing a constant 0mph Hopefully you have stuck with me this long and can help. The fixed voltage solution looks great but I need it to be just lower than 5v. Any quick and easy suggestions as this is a bit of a punt, but worth a shot. The other solution (if I can source one) is to buy a new speed sensor and just wire it up under the dash. Cheers Paul.