Flywheel/Encoder patterns

[Walters Chris]

>>An encoder giving absolute crank position would implicitly supply an
>>interrupt when the position changes value. Reading crank position directly 

>>means you wouldn't have to fool with timers or counters to derive it. 
You'd
>>also know exactly what the position is upon start-up without having to 
store
>>the last known position info upon shutdown. No way around the cam sensor 
tho
>>that I can see.
>
>Why not just have an encoder or sensor on the cam if you can get enough
>resolution?

Kalle has a good idea -- some sort of retrofit device in a distributor 
housing that encodes off the cam. This would work great *IF* you could get 
rid of all the mechanical slop between the crank and the encoder, like 
timing-chain stretch and cam/distributor gear backlash.

Snake
no cool Fords yet, one cool Dodge