[Diy_efi] RE: Diy_efi digest, Vol 1 #413 - 12 msgs

[William Shurvinton]

Is this 'Shannon load' or other load? If I goose the throttle in first I can
accelerate at around 1g on a dry road. It's not a static case, but it
certainly is load and I would expect every HP I have paid for to be
torturing my tyres.

 OK logging that burst wouldn't enable you to tune from it, but on an eddy
current dyno where you can put full load on what would you do to maximise
lower gear acceleration?

Bill
----- Original Message -----
From: "Adam Wade" <espresso_doppio at yahoo.com>
To: <diy_efi at diy-efi.org>
Sent: Thursday, December 19, 2002 8:15 PM
Subject: RE: [Diy_efi] RE: Diy_efi digest, Vol 1 #413 - 12 msgs


> --- bill.shurvinton at nokia.com wrote:
>
> > I can't grasp why terminal velocity tune loses power
> > in lower gears
>
> Same reason an inertial dyno is not a very good tuning
> tool in many respects; when tuning in low gears, you
> are only loading the engine with the inertia of the
> vehicle.  Which means you are never placing it under a
> full load for tuning purposes, unless you're climbing
> a REALLY steep hill at the time.  Higher gear, longer
> lever arm, more loading of the engine, a more accurate map.



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