OK, so here are a couple of question. If you have a 9,000 RPM motor why were
you shifting at 7,000 in the first place? Second why stop at 7,800 RPM? Why
not 8,600 or higher?
John Beckett, LSR #79, E/FCC
----- Original Message -----
From: "Keith Turk" <kturk@ala.net>
To: "dahlgren" <dahlgren@uconect.net>; "Marge and/or Dave Thomssen"
<mdthom@radiks.net>
Cc: "Land-speed Racers" <land-speed@autox.team.net>
Sent: Monday, August 28, 2000 10:15 AM
Subject: Re: Bonneville Transmissions
> Dave is giving you the simple answer...
>
> Now here is what Really happened... on the fastest Pass... we averaged 214
> in the 5 with a 218 out the back. but the real key is at the 2 1/4.... on
> that Pass it was going 184 at the quarter.... So anyway Dave is watching
> the Play back tach... and he says... HEY DUMMY your shifting right into
your
> Max Torque.... Hmmm so my answer... Geez is that why the tires spin so
> hard?.... So we moved the shift points up to 7800 instead of 7000 and
> walla..... No spin in the lower gears... at the 2 1/4 the car was going
> 197.... Yep... 14 miles an hour Faster simply by adjusting the shift
> point.... I am just imagining the Pass with the ability to run out the
back
> with 150 hp of Nitrous from the 2.... Yeah we are talking record
> territory.... that is why I am taking it back.... can't wait another
year
> to Test the Pistons again....
>
> In other words... Gears and Trans gear selection as well as Where you
shift
> those gears is absolutely critical to it's terminal Velocity....
>
> Keith ( Yeah I know... geez dummy you can read a dyno sheet too... why
> didn't you think of that...)
> ----- Original Message -----
> From: "dahlgren" <dahlgren@uconect.net>
> To: "Marge and/or Dave Thomssen" <mdthom@radiks.net>
> Cc: "Land-speed Racers" <land-speed@autox.team.net>
> Sent: Monday, August 28, 2000 7:33 AM
> Subject: Re: Bonneville Transmissions
>
>
> > I am surprised Keith did not answer this one unless it is his
> > secrect..LOL we changed only the shift points in his car and it went
> > faster at the 3 (203)than it used to go at the 5(197) so I say yes it
> > is important..and a perfect example! These were on gas only before the
> > great piston test... and yes we raised the rpm for the shift points and
> > not by all that much.
> > Dahlgren
> >
> > Marge and/or Dave Thomssen wrote:
> > >
> > > Well, gang our experience might be interesting. In 1979 we ran the
> Original
> > > Goldenrod streamliner (the one from Denver) with my flathead (unblown
on
> > > gas) and a T-10 4 speed. It ran 179 MPH in the last mile and we
thought
> the
> > > gear spread was just right for the motor until something malfunctioned
> in
> > > the transmission and it locked in high gear. We pushed it off as fast
> as we
> > > could (60Mph) and it chugged off barely able to pull away from the
push
> > > truck. The quarter time and the 2 and the 3 mile were slow, but it ran
> > > 179MPH in the last mile anyway. Anyone have similar experience that
> might
> > > suggest that a long course car doesn't need a transmission at all?
> > >
> > > Dave the Hayseed
> >
>
|