Archive for the 'Racing' Category

Croft race report

The weekend did not start well – the journey up to Croft was awful, partly
because of several traffic jams but mainly because the trailer developed a
nasty “snake” at one point. This was a very frightening experience
(particularly as not very long ago one of the mechanics at Jedi had the same
thing happen to him, and he ended up with the van he was driving on its
roof). Luckily nothing so severe happened to us, but I will definitely be
taking steps to stop the problem recurring!

We went to the circuit armed with various suggestions from both Jedi and the
rolling road who set up the carburettors for things we could try in order to
cure the engine problems we had at Silverstone. I thought that we’d found
the problem when I removed the needles from the carbs and discovered that
cylinders 1, 2 and 4 were running almost full rich whereas cylinder 3 was
running full lean. Unfortunately, making the settings consistent didn’t have
any noticeable effect on the track, and neither did anything else we tried
throughout the weekend :-(

The track was mainly dry for qualifying, but there were still a few damp
patches from the overnight rain and even a few patches of standing water. I
ended up 6th overall, which was actually rather better than I expected given
the engine problems. I was in the middle of a group of cars approximately 3
seconds off pole (which is a very big gap!). I’m not going to be able to
challenge for the front of the grid until I have the new, tuned engine ready
(hopefully in time for the next race!).

After practice, the whole field was called to see the Clerk of the Course
for a wrist slapping. He said that he’d had the largest pile of reports from
the marshals he’d ever seen and was worried that the race would be carnage.
As it happens, he wasn’t far wrong…

The race started OK – I picked up one place at the start, but I very quickly
came under pressure from two cars behind me. I was able to stretch my lead
through the faster sections of the track, but as soon as we got to anything
twisty the engine would bog down again and they would be right on my tail.
On lap 2, we passed one of the leaders who had stopped with mechanical
trouble and then on lap 3, the red flags came out to stop the race.

For the restart, I was in 4th, but the 3rd place car was missing (presumably
involved in the incident which brought out the red flags) so it was a
“virtual” 3rd. I didn’t get a great start, and I went into the first corner
side-by-side with another car. We both tried to outbrake each other and as a
result, both braked too late. He left it slightly later than I did and ended
up spinning in the gravel trap. I also went into the gravel, but managed to
keep the car pointing roughly in the right direction and get back onto the
track. Unfortunately, in the process of getting back onto the track, I
tangled with John Lord and we hit (my right-hand rear to his left-hand
front). This deranged my suspension and I had to pull off at the next corner
:-(

The race turned out to be something of a demolition derby with several cars
hors de combat by the end. Only three of the top 7 qualifiers finished!

The collision had written off the right hand rear upright and a couple of
rod ends – not too bad considering how bad it could have been. My pit crew
put in their usual sterling effort, and the car was back together, with all
of the wheels pointing where they should be, in time for the second race the
following day.

My DNF in the first race meant that I would be close to the back of the
grid. I got a pretty good start, and picked up around 6 places before the
first corner. I made up a few more places throughout the rest of the race,
and eventually finished 11th. It should have been higher, but on the second
to last lap, I spun at the hairpin as a result of trying to keep the engine
revs up and avoid bogging down. This allowed two cars past, and gave me an
unpleasant moment when my visor immediately steamed up making it very
difficult to see whether it was safe to restart!

All in all, not a very good weekend :-( Full results are [here](http://www.mst-group.co.uk/meeting.asp?event=41664&source=cscc2004&eventtype=csccclub)

The next race is in 5 weeks time at Snetterton on May 22/23. Hopefully I
will have the new tuned engine in by then, and working properly!

Silverstone race report

The start of the day was pretty hectic. Jedi had forgotten to send exhaust
mounts to replace the ones which had failed during the test at Mallory. We
therefore organised for a race supplies company based at Silverstone to
leave an envelope with some in it for me at the gate. Amazingly, this
worked, so the first job was to fit these before scruitineering. This wasn’t
helped by the fact that the paddock organisation was the normal Peterborough
Motor Club shambles, resulting in us having to move the car and trailer
after having unpacked everything. Hey ho.

The weather forecast was for rain all day, and sure enough it started
raining just before the first practice session of the day. By the time we
were due out, the rain had stopped, but the track was still wet enough that
rain tyres were clearly the right choice. A number of people managed to
throw their cars at the scenery in the conditions, resulting in the session
being red flagged after a couple of laps and many yellow flags throughout
the rest of the session. It was very difficult to find a clear lap, but
other people obviously found it even harder than I did, and I ended up
qualifying 2nd (although more than a second slower than John Lord’s pole
time).

By the time the race was due to start, the track was completely dry, and
although the sky looked threatening and there were the odd spots of rain,
slicks were order of the day. The arrangement of the grid was slightly odd -
for some reason they decided to put pole position on the left hand side of
the track when the first corner, Copse, is a right-hander. I wasn’t
complaining, as this definitely worked to my advantage.

I was a little apprehensive about the start, as this would be the first time
I’d done a racing start with the new engine, and I wasn’t entirely sure of
the best technique to use. As it happened, I got a pretty good start – not
great, but good enough to mean that I was in the lead into Copse, although I
had both John Lord and Andrew Cowell (who had qualified in 4th and therefore
right behind me on the grid) very close in my mirrors. On the run down to
Maggots, Richard Cottrell appeared from nowhere and shot past the whole lot
of us. Pretty impressive given that he’d qualified in 7th!

I was still in 2nd at the end of the lap, but was having some problems
keeping John Lord behind me. The engine was bogging down in the middle of
corners – at first, I berated myself for being in the wrong gear, but it
quickly became clear that this wasn’t the problem. The engine was fantastic
above 10,000RPM, but there was nothing at all below that. Unfortunately, the
gearing just isn’t close enough to be able to keep the engine revving that
high :-(

I managed to hold 2nd for a short while, but it couldn’t last and both John
Lord and Peter Whitmore both got past me on lap 3. That was it until the
flag, and I finished in 4th.

We’re not sure what the problem with the engine is. The fact that it’s fine
at high revs is encouraging, as it probably means that whatever the problem
is isn’t too serious. The most likely culprit is carburetion. It will be a
little disappointing if this is the problem, given that the car was on a
rolling road, supposedly to get the carbs set up correctly, less than 2
weeks ago! I will be calling the rolling road to discuss first thing on
Monday :-)

Next race (and the first Formula Jedi round) is a double-header at Croft on
the 17/18th. As ever, let me know if you don’t want to receive my ramblings
and I’ll remove you from the list…

On track at last :-)

On Tuesday, I took the car to a rolling road to have the engine run-in (much
easier and less boring to do this on a rolling road than on a track!) and
tuned. This went relatively smoothly, except for the clutch cable seizing
just before the power runs. The rolling road operator ended up operating the
clutch using mole grips on the clutch actuator (with asbestos gloves on -
it’s right beside the exhaust!). The final tally was 136bhp at the rear
wheels (which equates to something like 155-160bhp at the flywheel).

The current engine is completely standard apart from a few tweaks necessary
to get it working correctly in a car (baffled sump, uprated clutch and
rejetted carbs). I’m currently having a second engine tuned up, with a view
to fitting it after the first couple of races. It’s going to be tuned to
“medium” race spec – not so highly tuned to be unreliable (I hope!) but
enough to make a considerable difference. It’s having a close-ratio gearbox,
race cams, a ported head and increased compression. If all goes well, we
should be getting something like 150bhp at the rear wheels (or ~170-175bhp
at the flywheel).

And so yesterday, we took the car to a test day at Mallory Park. The main
point of the day was to find all of the “niggling” problems which would
undoubtedly be present, without trying to do this during a race meeting! On
that front, it was a very successful test, in that we discovered a number of
loose bolts, the exhaust fell off and the gearlever and pedals needed
repositioning :-) The biggest problem was that the car was suffering from
terrible fuel surge at the exit of Gerards. This almost certainly wouldn’t
happen at any other circuit in the UK, as no other circuit has such a long,
fast corner, but it would still be nice to sort it out. We tried increasing
the fuel pressure to fix it, but this didn’t improve matters, so Jedi are
currently making me a small reserve fuel tank which can sit above the carbs
to address this.

So, with luck, the car is now ready for the season. The first Formula Jedi
race is at Croft on 17th/18th April, but I will be at the Monoposto race on
3rd April as a further shakedown before that. If anyone wants to come along
to either race, you would be more than welcome!

There are pictures of the completed car here:

[Image 1](http://www.paulbutcher.com/assets/2007/1/21/image1.jpg)
[Image 2](http://www.paulbutcher.com/assets/2007/1/21/image2.jpg)
[Image 3](http://www.paulbutcher.com/assets/2007/1/21/image3.jpg)
[Image 4](http://www.paulbutcher.com/assets/2007/1/21/image4.jpg)

As ever, if you don’t want to receive further updates just let me know and
I’ll remove you from the list…

Racing

If you don’t want to receive any further messages, please just let me know
and I’ll remove you from the list.

I was planning to make some upgrades to the car before the 2003 season, but
my argument with the tyre wall at Mallory Park on Boxing Day meant that the
upgrades turned out to be a little more extensive than intended :-) In the
end, as well as the planned limited slip diff, I also ended up fitting new
front dampers, upgraded front and rear wings and a new rear undertray. All
of these upgrades were improvements, but the LSD and the new undertray were
particularly successful. The LSD made the car both much more satisfying to
drive and easier on the rear tyres. The new undertray generated significant
downforce (unlike the previous design!) – to such an extent that finding a
way of attaching it to the car firmly enough so that it didn’t pull itself
off was a problem all year!

Unfortunately, the first few events of the year were compromised by a
recurring engine misfire which took us a long time to diagnose. After a
following a number of blind alleys, we finally worked out that it was the
result of fuel vapourisation caused by exhaust heat getting to the
carburettor float bowls. Once diagnosed it was pretty easy to fix by
fabricating a baffle to fit over the exhaust (thanks, Dad!). It was annoying
though, because it meant that I failed to finish the first few events.

From that point onwards, most of the races followed a pattern. There was a
group of two or three faster cars which were consistently ~2 seconds a lap
faster than everyone else, then there was me, and then there was another
group off cars consistently ~1 second or so slower. Unfortunately this meant
that in a lot of races, I was largely alone on the circuit. There was a
battle ahead of me, a battle behind me, but I mostly just drove around by
myself :-(

I had a few good results, including a couple of second places, but these
were as a result of the guys ahead of me having problems rather than me
doing anything particularly clever.

I blotted my copybook in a pretty big way at Croft, when I managed to lock
up going into the first corner and promptly disappeared headfirst into the
tyre barriers. As it happens, this was captured on video by the wife of
another competitor and you can watch me making a mess of it [here](http://www.paulbutcher.com/assets/2007/1/21/croft.mpg)

The car was eligible for two championships during 2003: the Monoposto series
I competed in during 2002 and a new 1000cc class in the Formula Honda
series. For various reasons, I ended up doing a few races in each series
without doing enough in either to really mount a full challenge, so I didn’t
finish particularly well up the final placings in either. For 2004, I’m
planning on concentrating on Formula Honda (which is likely to be renamed
Formula Jedi). I may still do a few Mono events, but I’ll make sure that I
do enough Formula Jedi to be able to place well in the championship.

In order to try to find the 2 seconds a lap which I’ll need in order to be
up with the front-runners, the car is having some very extensive upgrades
over the winter. I’m getting a new chassis (replacing my short-wheelbase,
low nose MkIV chassis with a long-wheelbase, high nose MkVI chassis), and a
new engine (replacing my Fireblade with a Yamaha R1). Enough other things
will need upgrading a result of these changes (bodywork, wiring loom,
exhaust system, …) to mean that it will very nearly be a completely new
car by the time I’m finished. I hope to pick up a large pile of bits which
will then need bolting together from Jedi this weekend, after which I’ll
have my work cut out getting everything together in time for the first race
of the season…

The draft calendars for Formula Jedi and Monoposto have recently been
released:

Formula Jedi:

April 17/18: Croft (Double Header)
May 22/23: Snetterton (Double Header)
May 30/31: Silverstone
June 12/13: Brands Hatch (Double Header)
July 4: Cadwell Park (Double Header)
August 21: Oulton Park (Double Header)
Sept 12: Mallory
Oct 9: Rockingham
Nov 6/7: Brands Hatch (Double Header)

Monoposto:

March 13 Silverstone
April 3 Silverstone
May 23 Mallory Park
June 5/6 Croft (Double Header)
June 19/20 Anglesey (Double Header)
July 31 Oulton Park
August 30 Castle Combe
September 25/26 Snetterton (Double Header)
October 23/24 Donnington (Double Header)

If anyone fancies coming along to watch, you would be very welcome indeed!
And extra pit-crew are always welcome :-)