
Dennis at Willow Springs (photo courtesy of Dan Cummins)
Report
by Dennis about his 2010 Race Prep (late
February, 2010):
As
I write this there are four weeks left to go before the first
race of the 2010 season out in Phoenix. My '82 silver CB-F and
'74 green Kawasaki Z1 are ready to go. Only the black CB-F is
on the bench, victim of rounded dogs and a worn shift fork for
5th gear. My parts store (also known as e-bay) didn't have affordable
replacements "in stock" until January and now work is underway
to repair the transmission and do a few small upgrades - a Dyna
right side ignition where the alternator used to be. It's grafted
off a Z1 and replaces the oil bath stock Honda ignition that doesn't
work well in a race motor at high RPM. I'm also installing slightly
larger front discs; up from ~11" to ~12".
Last
year went pretty well; my only complaint was that instead of winning
two national titles I came in 2nd overall in both. I won both
SuperVintage and Historic Vintage Heavyweight regional class championships
plus a local class championship in SuperVintage and ended second
in the local Historic Vintage heavyweight class where I DNF'd
in two races on my Z1. I finished every race on the Hondas - a
first for me! My worst finish (besides the DNFs) was a 4th at
Willow Springs with every other race event was a podium - which
is pretty darn good! I was pleased to be there and disappointed
at the same time; if you're third you want to be second, and if
you're second you want to be first, and if you're first you want
to be… faster! I guess that's why some people race, eh?
I
competed all over the US in '09 starting in March with races in
California, Alabama, Utah, Arizona, Wisconsin, New Mexico, Michigan
and Utah. I drove almost 11,000 miles dragging my bikes around
and was pretty wore out by the time the season ended in November
with me racing in 40 sprint races over the course of multi-day
and multi-class events; 6 nationals, 4 regionals and the rest
local events.
In
2010 it'll be almost as full a year as the previous year. I'll
be doing 5 nationals, 4 regionals and compete in a total of 36
sprint races, down just 4 from last year. Because of scheduling
conflicts I'll be doing one less national and one of the national
events conflicts with a local event. Given the wonderful track
and atmosphere of Road America it wasn't a difficult decision
to decide to drive out to Wisconsin but it'll be hard if not impossible
to win my local class championships missing that one local race
event. For some reason, I don't think the local guys will miss
me, though! I will participate in all four of the regional events
so I'm hoping to do well in that series.
The
five national events this year will be at Portland, Oregon (my
first visit to that track), Road America in Wisconsin, Miller
in Salt Lake City, Barber's in Alabama, and Grattan in Michigan.
That'll give me the 10 races (one on Saturday and another on Sunday)
in the two classes I compete in to put me in contention for the
national titles again - provided I do well! The national series
only looks at your top 10 finishes and drops the rest, so if you
do poorly in one race you could theoretically "replace" that race
by attending another national event and doing well there.
I'm
looking forward again to all the help and support that Randakk
will provide though his sponsorship and a place to document the
trials and tribulations of racing.
Last
year was great - almost. I hope this year is as good, or better!
Winning everything… Yeah… Cross your fingers! Mine are.
Dennis
Report
by Dennis about his 2009 Race Prep (late
February, 2009):
The
beginning of race season is right around the corner, and it's
time to dust off the cobwebs!
I
had to do a lot of prep work on my race bikes to get ready for
this season. On the Honda front I'll be campaigning two Hondas.
In order to differentiate them, I'll just go by the color of the
bodywork. One is silver with blue stripes; the '82 scheme that
everyone remembers from Freddie Spencer's exploits. The second
bike is an '81 black scheme with the two orange stripes of the
750 model. I tore both Honda engines completely down and went
through them to see what might need attention. I'll also be running
a couple of Z1 Kawasakis.
Here's
some of the preparation:
The
silver Honda is a 985cc motor based on the long-stroke 900F engine
with cams, smoothbore carbs and some reliability modifications.
When I tore it down in the off season I found the transmission
had a couple of gears needing replacement because the engagement
dogs were worn. Those were replaced with parts from a CB1100F
transmission which has undercut gears. I'd broken two cam chain
tensioners early in the engine's race life, and the newer style
CB1100F tensioner I put in a couple of years ago looked fine along
with both cam chains. The rod bearings were bad and needed replacing.
New ones were put in along with a new crank and rods. Everything
else looked fine so I reassembled the engine and made sure everything
was in spec. It was started up last week and sounded great. It's
now loaded up in the trailer.
The
black Honda is also a 985cc motor very similar to the silver bike.
Slightly different cams are the only difference. It was also tore
completely down and gone through. The good news was everything
looked excellent - except for the rod bearings. A new crank, rods
and bearings were also put in this motor. I had been experimenting
with a dry ignition driven off the alternator side of the motor,
but the crank needs to be machined for that plus I'm getting tired
of bump starting the Hondas so I reinstalled starter motors on
both bikes. That required a starter clutch which wouldn't fit
under the previous HRC flat ignition cover so that side was "de-engineered"
back to stock. The motor is already in the frame and should be
running in the next day or two before it's loaded up.
My
first race of the 2009 season starts in Phoenix the weekend of
February 28th. Last year the season began at this same track,
and I fell on my left shoulder on cold tires during my warmup
lap separating my left shoulder. I finished the day with a win
and a 2nd in the vintage classes and a 7th in a modern class called
'Thunderbike' on my vintage Honda but my shoulder's weakness and
pain bothered me rest of the year. After physical therapy and
strengthening exercises it's good to go for this year! The Phoenix
track is small and tight, not a good match for a big 460 pound
vintage superbike ridden by a big guy on skinny tires. However,
I'm still hoping for a good finish. I'll send along my update
after the event.
Wish
me luck!

Fierce Pair of DOHC-4 Hondas!
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