Great guys....thanx 4 ur replies.....@BCrider......ya it finally boiled down to 2 freewheels on the drive axle.......with two separate chain drives.......but i still face the problem wid steering.....i didn't want to use the conventional underseat steering handles ..... i came up with a steering system with a steering wheel to be controlled with one hand.......(the steering wheel is a normal steering wheel with a handle projecting perpendicular to the plane of the wheel from a point on the circumference......the steering to be done via the handle.....just like the handwheels in a lathe machine...whew!)......ya so the steering wheel is connected to a larger sprocket mounted on the forks of front wheel via a belt/chain drive.....hope u understand frm the pic......so the handwheel rotates to rotate the front wheel.......it is supposed to work in theory....wat do u guys think?