I think Chu is talking about the ignition timing, not the fueling.
I would think if the spark comes later the fuel might not burn as completely. Maybe you could cut some fuel where there's negative timing numbers.
Damn, yor're right
My bad, I stand corrected, sorry chu, you are correct,
shifting the spark way back towards "late" (negative PowerTuner numbers) will lessen efficiency.
It was very interesting to witness back when my buddy's WR426F CDI had the microcontroller die
(no spark advance anymore) but the fallback startup circuitry still alive:
The bike would fire up a readily as ever, you could ride it at walking speed
but any decent throttle opening would be of no effect.
The engine did ignite every combustion cycle nicely, no backfiring, stalling or surging,
but it did make absolutely no usable power. It does take really long to ride home with 15 mph
Our reasoning was the ignition did fire at the kickstart timing, w/o ever advancing.
Ingesting a suitable amount of fuel and igniting it very late, w/o producing adaequate power must indeed be very inefficient.
Here's a thread from advrider with a little info on the Clarke as far as mounting with Unibiker and GYTR rad guards
You need to be a member in order to leave a comment
Sign up for a new account in our community. It's easy!
Already have an account? Sign in here.