Dick
I believe your referring to slippage, which is quite different than
transmission efficiency. And a true torque converter will always have some
slippage. 200 + RPM.
John Beckett
----- Original Message -----
From: "Dick J" <lsr_man@yahoo.com>
To: "Joe Timney" <joetimney@dol.net>; "John Beckett"
<landspeedracer@email.msn.com>
Cc: <DrMayf@aol.com>; <ARDUNDOUG@aol.com>; <land-speed@autox.team.net>
Sent: Monday, August 28, 2000 10:46 AM
Subject: Re: Ford C-4 Tranny Gear Deliberations
> If I'm not wrong though, the HP lost through the
> torque converter is greatest at the speeds where
> the variable between the input and output side is
> the greatest, and the loss decreases as the two
> sides approach the same speed (direct drive, in
> high gear). That means you might be losing 12 -
> 15% at standing start, but the faster the car
> goes, the less you lose. By the time you approach
> your top speed, there is virtually no difference
> in the transmissions, as they have done their
> work and it is now a direct drive (or OD)
> function.
>
> Dick J
>
>
> --- Joe Timney <joetimney@dol.net> wrote:
> > As far as Automatics go, I don't have figures
> > but I remember a Horsepower
> > usage ranking that went something like this:
> > Highest to Lowest
> > Torqueflite
> > 400 Turbo
> > C6
> > 350 Turbo
> > C4
> > Powerglide
> > The article was old and was written before all
> > the OD autos became popular.
> > Most of the Od trans are somewhat weak and
> > require big $$$ to hop upas far as
> > I know.
> >
> > Anybody else have any knowledge they want to
> > share?
> >
> > joe( love a stick shift...wish we had one in
> > the S-10)
> >
> >
> > John Beckett wrote:
> >
> > > Geeeees, That's about 87 HP if I'm
> > calculating it correctly for that old
> > > combination of mine. Boy if that don't make
> > you want to throw out your old
> > > automatic...or at least your old T-400...I
> > don't know what would.
> > >
> > > See what you started again Keith.
> > >
> > > John Beckett, LSR #79, E/FCC
> > >
> > > ----- Original Message -----
> > > From: <DrMayf@aol.com>
> > > To: <landspeedracer@email.msn.com>;
> > <ARDUNDOUG@aol.com>;
> > > <land-speed@autox.team.net>
> > > Sent: Sunday, August 27, 2000 1:14 PM
> > > Subject: Re: Ford C-4 Tranny Gear
> > Deliberations
> > >
> > > > John, this is my simple way of determining
> > HP given another hp:
> > > >
> > > > HP2 = HP1 (new speed^3/old speed^3)
> > > >
> > > > where HP2 is the new horsepower desired
> > > > HP1 is the old horsepower
> > needed to run at a given speed
> > > >
> > > > in this case HP2 = HP1
> > (211*211*211/200*200*200) = HP1 (1.17424)
> > > >
> > > > or it will take about 17.4% more
> > horsepower.
> > > >
> > > > Remember HP is a function of the cube of
> > speed.
> > > >
> > > > mayf
> >
> >
>
>
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