GOOD NEWS
The tires are working great. I made three changes to the suspension
:
1.) I removed the front spring spacers to soften up the spring rate.
That allowed the car to rotate more easily.
2.) I ran with 2 clicks on the front shocks instead of zero clicks.
My reason was to let the front settle more gently when it came back
down.
3.) I removed 1/8 turn of top right bar preload to even out the load
between the tires.
Dead hooked every time - either lane. 60 ft times were 1.604, 1.623,
1.621, 1.615 and 1.617. A pretty good group - especially considering
I dialed in my secondary throttle stop after the first run because I
went too fast for my class.
To slow the car for the Sportsman's class I installed the stock pink
vacuum spring. Last time this spring slowed me to 7.50. This time I
ran 7.38 with the same spring. It's the 50 cc pump - that's where
most of my recent performance gains have come from. So to slow it
down more I dialed in a big bunch of my secondary throttle stop and
went 7.467 and 7.469 the last two of my test runs (you only get
three).
The other issue I faced was reaction times. For KOH I was running
all kinds of slow down tricks that are illegal in the Sportsman's
class. I removed all that stuff and went au'natural. But I replaced
then with new au'natural and legal tricks:
1.) I went to the welding store, with my TPT, and picked out some
grade 5 acetylene welding sun glass type eye protection that added
0.020 to my reaction time. These are intense - on the line I could
see to drive just fine but the yellows just glowed so dimly like
through a fog. Could just barely see them - perfect.
2.) The normal difference between daylight and night reaction times
is about 0.020.
3.) I ran my front tires three pounds light to increase their roll
out.
4.) I lowered my idle to 650 RPM. I was running 800 RPM on Thursday.
5.) I staged very carefully and as shallow as I could.
All reaction times were in the fives - 0.513 to a worst of 0.594.
Not spectacular but I know I can win some races with those.
I won the first round with a gift - the opponent broke. I lost the
second round because once again my transmission refused to shift
into third - and I had the guy covered too. That's the third time
that's happened - and there's no pattern. I'll call Bowtie
Overdrives and see if there's any possible mechanical reason for
this type of occurrence other than Tim had a brain fart and forgot
to shift.
With the tires working I'm back on track for installing the double
pumper. But I also want to put it on an RPM Air Gap manifold so I've
got one on order from Amazon. Did you know Amazon sells speed stuff
cheaper than Summit with ZERO shipping charges on many items?
Amazing.
The data graph from run 1 is
HERE,
the too fast run.
The AFR is back in the 13.5 range where it make the best power in
spite of my insistence that it won't - damn. I hate it when the
facts get in the way of my preconceptions.
And the secondaries opened before the 1-2 shift - previously with
the pink spring they opened just after the 1-2 shift - peculiar.
And notice that he shifts are sharper again. I discovered that my TV
cable had stretched about 0.200 and I was not getting a full pull.
Gotta watch that.
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