real time dyno

[David Crocombe]

>Oh, and are you guys going to factor in your correction factors for
>humidity, barometric pressure, and temperature to give the results from
>run to run more accurately?
>All I'm trying to say is, don't expect miracles from the readings off
>the accelerometer.

Ultimately I would like to measure and to factor in correction factors for
humidity, barometric pressure, and temperature etc to give the results from run
to run more accuracy.

I thought measuring revs and acceleration could show up things like loss of
traction, as well as trying to calculate power as a quantitative measure of
vehicle performance. As someone mentioned, power is great for it's brag value
but also to get an idea, for ones own benefit, as to how much extra power the
nitrous is giving for example.

>Why not mount a pair of magnets inside the front wheel and use a hall
>effect sensor mounted to the brake baking plate? The rear tires may grow
>considerably but the fronts shouldn't.

I have been trying to work out how to mount some sort of speed sensor on the
front wheel. It is difficult as it uses spoked motorcycle front wheels in an
open wheel format. So there is no front brake and hence no backing plate to
mount things on, just a rear hand brake and a parachute!

One other thing, which we don't have a problem with at the moment but is kept
in mind, is that the front wheels can be prone to lifting off the ground and
hence losing the rotational information.


>I would love to have dyno ... and a place to put it ... and the time
>to play with it ... and the money to support all the stuff above plus
>everything else (including the divorce attorney).

>Since I don't, and my needs are tuning my EFI for optimum (in real
>time), the accelerometer seems the best compromise.

Know what you mean. Already got the divorce attorney, now just need a real
time performance measuring system (dyno).


I do thank people for their contributions to this DIY-EFI as I am learning
a lot.

Regards,

David Crocombe
Sydney
Australia