Hi everyone,
I am working on a project that involves converting H-pattern gear shifter(like any road car with manual gearbox) of Maruti Suzuki-800 into a sequential shifting system. I came up with a design that uses 4 linear hydraulic actuators to provide motion to the gear-stick in 2 perpendicular directions in a plane, thus, achieving the gear shifting. But now the problem is I can't use electronics to control the open/close sequence of the actuators, I only can control them mechanically. I can't think of any such mechanical mechanism to control them, please suggest some mechanism.
You can also suggest an entirely different system for sequential shifting, but that should be purely mechanical.
Waiting for advices....

 

This is the shift pattern..

& this is whole shifting assembly..

1=Shift arm 6=Support bearing (shift arm bearing)
7=Shift lever
2=Ball socket (shift lever bearing) 8=Shift rod
3=Shift lever cover (gaiter) 9=Shift rod joint
4=Shift lever **** 10=Bearing bush
5=U-gaiter

 

I thought of doing this too! you would need some sort of grooved shaft with 1 position for each gear (incl. reverse) that would "click" into a position every time you pushed forward or back. the groves would need to be worked out so that you can get the appropriate rotation along with fore and aft movement at the shift rod joint. Could also build a hybrid of the two where the shaft controls 2 master cylinders, with 1 slave for rotation and 1 for in and out.