Well,
I made it through the weekend alive!
About Muroc:
That dry lakebed is the dirtiest place I have ever been in
my life. I have heard the dust there compared to volcanic
ash. Not only does it stick to everything, it also makes for
a slippery driving surface. When the wind kicks up in the
afternoon, visibility drops nearly to zero. Suddenly, everyone
appears to have aged when all visible hair looks gray after
being coated with the fine dust.
I drove
up with Martin Hansen (fellow Gear Grinder and driver for
Hairball Racing Team). We left at midnight Friday and our
navigating extended our trip a bit. Unable to find a Hotel
room due to some soccer tournament in Palmdale, we napped
just outside of the entrance to the Air Force Base at 4:30am.
It was a rough morning. We got on the base at 6:00. At 7:00,
I passed inspection with a final warning about my front tire
(not rated for over 150mph) and waited for my turn - #87 in
the lineup. Racing began at around 7:50. Vehicles go one at
a time down the 1.5 mile runway, and with dust to settle and
potential parts on the course from failures, it could be a
few hours.
I kicked
back in the pits and watched George Voes and the rest of the
Hairball Racing Team get their car ready. I slept a little,
ate a sandwich and then started to feel better. They called
my number around 11:30. I got in line and socialized with
fellow racers, spectators, various other enthusiasts as the
line crept forward. Pretty simple after that: suit up, warm
up the engine a bit, and take off at the prompt of the starter.
The tire
wanted to spin through first and second so I eased into the
throttle, then kept the RPM's high through third and fourth.
I got into top gear and brought my feet back onto the passenger
pegs and tucked into the bike as well as I could. Everything
felt great. My fear was that I might run out of course before
I was finished accelerating. Well, my engine was revving and
the finish line was nowhere in sight. I glanced briefly at
the tachometer a few times to see how far I was from peak
power. I was surprised to see the needle bouncing around 6000
rpm. I looked ahead and still could not see the finish line.
The course felt as smooth as a dirt course could feel, I guess.
A bit jittery, but the bike was going straight. I spotted
the red balloons indicating the finish and peeked at the gauge
- 6200 rpm. This was more than I expected. Throttle pinned,
I hoped for more acceleration as I flew through the timing
trap and past the finish line. I rolled off the throttle and
raised my upper body to catch the wind and slow down. I brought
my feet forward to apply the brake sparingly, and downshift.
Looking for a yellow balloon indicating a patrol vehicle equipped
with a radio, I coasted off to the side of the course. When
I finally stopped alongside a patrol, I was told that I had
just gone 148.51 mph.
I was very
excited about reaching this speed with the gearing I had on
the bike. I knew the carburetor jetting was perfect for sea
level, where I had tuned the bike on my dyno and got 96hp
maximum. I had conservatively and naively left the jetting
alone despite the thin air in the high desert. The altitude
is around 3000 feet and when corrected may be much higher
when the heat is considered (it was around 98 degrees in the
shade). I don't know how this affects my mixture exactly other
than making it rich, so I didn't change it right away. I needed
some instruction.
Wink Eller,
much experienced Harley engine builder/racer and multiple
record holder, was kind enough to share his knowledge and
experience with me and suggested a 76 or 78 main jet. I was
running an 82. I changed the jet to a 78 and got in line.
The wind picked up and at 3:30 the course was shut down. You
just could not see 30 feet ahead of you. The good news was,
the lineup would resume in the morning, putting me in line
earlier and with the more desirable conditions. Cooler air
is more dense and makes more power.
I got in
line and my turn came at about 10:45 Sunday morning. I had
lubricated my chain and put a bit of slack in it, leaned the
jetting a bit, and with a little tail wind I was off. Top
gear came fluently. I adjusted my riding position to get my
back level and get my weight over the rear wheel to improve
aerodynamics and traction. I also let go of the handlebar
with my left hand and layed my arm against the tank with my
hand behind the tach. When I saw the red balloon, I looked
at my tachometer, and the needle was vibrating around 6500rpm.
The engine had managed to pull through the entire rpm range
despite the tall gearing I had selected. I found out from
my chase driver when he arrived to tow me back to the pits
that I HAD JUST GONE 153.195 MPH!
This was
my personal best, and only 2 mph off of the record of 155.
I got back in line, leaned the jetting with a 76 main, determined
to go faster. The tail wind had picked up, and with more power
from changing the jetting, the record was within reach. My
turn came again. First and second gear spun the tire. I went
for third and got nothing. I jabbed down on the shifter and
found third gear. I accelerated through third, lifted up on
the shifter, let the clutch out and got nothing again. Another
missed shift! I hit the shifter lever down and found fourth,
got through into fifth and watched the tachometer. I went
through as before turning around 6500rpm. This run was good
for 153.622.
Better
jetting, a healthy tailwind, and two missed shifts kept me
out of the record books. I achieved my goal of over 150, but
I'm not satisfied. I just know I can go faster. The next meet
is at El Mirage July 16th, and you can bet I will be there
trying for 160mph.
Geoffrey
Gaites

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