Gear indicator

Strange as it may seam to those not familiar with Bike Engine'd Car's (BEC), the car currently does not have a gear indicator other than neutral. That is because in YR2000 they don't fit such things as standard to the Hayabusa engine. Possibly newer bike engines provide such features but not this one.

I purchased an electronic indicator (from ebay) driven off the gearbox selector leaver, a device that claims to be the ultimate fault free solution of course (at least they don't admit to any problems = same thing). If you read the forums they are not perfect esp if you have two attempts at a gear selection. However it does correct the reading when  passing thru neutral.  The company is called SBSMOTO Racing Beijing located in China of course.

Alternative devices exist which compute the gear you are in by measuring the revs produced and the speed you are doing and looking up a table of values. These devices are quite expensive if bought separately from the ecu.

This device works by having two hall sensors one for up and one for down and a signal picked up from the Hayabusa wiring loom which indicates Neutral . A magnet is attached to the gearbox leaver to stimulate the hall sensors. The  neutral feed signal from the gearbox must be some sort of electronic source that does not go all the way to 0V when active. It goes to about 0.7V,  I added a relay to create a proper 0V for the SBS device which it apparently needs.

The magnet is attached to the gear selector leaver fabrication with araldite.

If anyone tells you these things are easy to install they are either lying or they have done it before. I created two parts fabricated in stainless steel (they need to be non magnetic). A plate to mount the hall effect sensors and a bracket to mount the magnet. The plate is mounted on the same bolts as the clutch master cylinder. The magnet bracket is mounted on the rose joint hole for the cable/paddle shift.  There is not a lot of room around in that part of the engine bay. The wiring is poorly documented in my case so sorting that out was time consuming also. I tried to avoid modifying the clutch master cylinder bracket but that turned out to be not possible. Mounting the sensors behind the dashboard was a non starter of an idea. I hate working behind dashboards.

 Contents

There is a contents page Link

Gear displayed just above paddles in middle

Gearbox fabrications