[Diy_efi] sequential injection timing

[William Shurvinton]

You are intimately aquainted with the test equipment :-)

It still requires far more skill than I have to be able to measure those
sort of changes before heat soak, tyre temperature changes etc throw the
readings. Most impressive.

New house has room for dyno :-) Is it considered OTT to have one on the
premises?
----- Original Message -----
From: Mark Claywell <clay0052 at UMN.EDU>
To: <diy_efi at diy-efi.org>; <diy_efi at diy-efi.org>
Sent: Tuesday, July 30, 2002 5:11 PM
Subject: Re: [Diy_efi] sequential injection timing


> Hello,
>
> Most of my testing has been on an eddy current (Schenk) dyno with a
digilog
> controller or on a DC dyno. The DC dynos were WW2 vintage, but upgraded
> with newer load cells. Calibration was done every few months (up and
down).
> You might be suprised that you can pick up an old eddy current or DC dyno
> for not much money. The DC dyno's are however massive, for their
absorbtion
> size. You'll likely spend more money on the controller. I know some people
> use LABVIEW and make their own controller using that, which can be
cheaper,
> but takes more screwing around.
>
> Many of the times I wasn't worried how much power was being put out, just
> what tuning parameters were worse or better. In a small change (<%5) the
> output of the load cell is very linear and you can look at percentage
> changes and get useful data without worry of calibration. That's how I can
> measure 2% gains.



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