I got asked to add some buttons to a Momo airbag wheel for an Exige (same wheel as the VX) for race use and to delete the airbag. This is mainly so a whole new wheel doesn't need to be bought for racing and the decade old airbag is stowed somewhere away from his face.
Below is the initial design.
The airbag wheel is removed and a resistor stops the warning light coming on.
The new centre attaches in around ten seconds as the four buttons are wireless, via a pcb mounted behind the momo badge part. They transmit to four latching relays so they can activate charge cooling, launch control, auxiliary fans, ecu maps or whatever and the relays can be mounted anywhere in the car.
(On this one there is also a shift light, that's what the knob is for, I haven't decided where the LEDs are going yet, so that's unfinished)
It only takes a few seconds to remove the centre, being wireless, and about two minutes to plug in the airbag again and fit the two screws for road use.
The top section was for an additional part for the shift light LEDs, but I'm thinking now of fitting them into the flat area between the top screws. The buttons will be recessed too.
My VX is standard so I'll not be fitting one to it except for the photos, but I understand he appeal of having controls that don't require drilling holes in an increasingly expensive car.
What dya think so far?
hope to get a final version done later this week, just popped it on here for any input you guys can give on positioning things or how it's best set up.
