Tag Archives: experiment

Complete Podium @ 1st Weskus Mall Gymkhana

1st Weskus Mall Route.jpgDuring the weeks that passed since the last event all focus was on the preparation of the vehicles with many long nights clocking the hours in, in the garage. Mike decided that this would be the ideal time to fit the 2nd hand 1.4i VW Golf motor to the Fox, this was one of his best ideas to date, but also one of the worst, as this machine had a mind of its own.
To sum it up, after the fires was put out and everything working off it went to DynoTech for some seriously needed mapping on the Gotech side. The map that Jan and Mike developed on the road was quite good and very driveable, until the first power run on the dyno, it was very apparent that the motor had a lot more to offer, they start the process and Izak van Zyl quickly whipped it into shape. Before Izak got his hands on the car it had a sound of a sluggish rotor motor, which I particularly enjoyed, but Izak thought it good to get the motor to its full potential rather than letting it sounds as sweet as it did.

IMG_6699_0.jpgOn Thursday evening Mike and Bjorn took the car to our test area to put it thru its passes in order to give the go ahead for competition, and all of a sudden I was called upon to bring the recovery vehicle as there were a strange rattling sound coming from the motor, first thoughts turned to main or big end bearings, but the sound was not familiar. Once back home we hook all the gauges up and started it again, after some time the sounds was diagnosed to be coming from between the gearbox and motor. Jan being Jan and only needed about 4 hours sleep a night, he persuaded Mike to get the spanners and start stripping to get the box from the motor.
Many hours later, too much coffee further and the gearbox was back in its place, and the culprit in the bin and replaced with a new one. The culprit turning out to be a 8mm bolt about 9mm long holding the dust cover behind the pressure plate and motor that came loose. The poor replacement being fastened with enough super strong Loctite to never come loose again. Friday evening the last of the loose parts, fittings and hoses was replaced and the car started up with no strange sounds, all this drama for one bolt.

46H Jan van der Vyver - VW Golf Citi 1400_0.jpgIt was quite busy on the “Lil Datto” front, after some very hard thinking and analysing sessions, I decided to stretch the track on the front suspension to start matching the rear E30 parts, seeing as this could be the mayor factor in contributing to the bad front end grip. After a visit to “Datto” I decided in raiding the bigger brother of some custom made front suspension bits like, adjustable lower control arms and track rods. Armoured with the correct parts, poor “Lil” was stripped and the conversion started to get the new parts in. Unfortunately I could only stretch the track by 35mm per side as the steering arms between the inner and outer tie rods was too short to allow more. Deciding that this will be the best for the time allowed I went ahead with the transformation using my race cars parts. After making new stills and mounting points for the anti-roll bars “Lil” was put back on its wheels, poor thing had a tear of happiness in its eyes as it starter to look less like a Frankenstein car and more like a car which rear wheels will follow in the same track as the fronts. Not yet 100% in line with the rears, but as close as time would allow, fenders was cut to allow the wheels to turn as a result of the strut being moved out and to the front.

Saturday morning 04:00am, way too early for comfort, still feeling very unrested from the previous late nights, we packed the cool bags, washed our faces more than once to wake up. We preheated the tractors and got the 6 vehicle convoy going, all 3 of the tow vehicles being diesels. We arrived at Vredenburg just after 07:00 and started with the pre event preparations, I had some space available in the bakkie and decided the morning to load a mountain bike for some transport around the venue, this turned out to be one of my better ideas as I will never again attend an event without it. The track route that we were presented with at documentation, really messed with my head, after a few rounds on foot I decided it is time to tackle the route with the bicycle, man oh man, what a difference did it make.

At about 10 o’clock the event started off and more or less at the same time we realised that this was going to be one of that very special warm days down at the Weskus Mall Vredenburg just outside Saldanha.

Mike Mathee and Pietie Erasmus in Class D VW Fox 1.4i – 1st in Class D and 10th Overall

IMG_6647_0.jpgMike was the first Race-Tech member to navigate his VW Fox thru the route, he posted a very surprising good run, something we did not anticipate. He also entered the Fox in a non-scoring run to gain experience with the new engine combination, Selina was asked to navigate for Mike to gain some experience and get a feeling of grip. After the first run, Selina must have been in shocked as she was unable to stand on her own and had to press down on the car to keep her balance. Personally I think she was shell shocked at the speed Mike went thru the course, it is quite something to sit in the navigators seat with an fast driver, especially if his times is 15-30 seconds faster than your own, it is at that exact point that you get that feeling that in the next minute you will hit something/die/roll/pee yourself etc. The expression on her face was priceless after the run, just being exposed to the speed and commitment it takes to post fast times in Gymkhana. On Selina’s own runs se made very good progress thru the day, slashing a massive 15 seconds off her 1st run, with her last outing on the route. With a little more shell shocking and practise the team will get her very competitive one day, being motorsport and not a second nature, time will only reveal the true mystery.

Throughout the day Class D was rattled and shaken as Jan, Pietie and Mike battled it out to get to grips with the cars, the day ending in making history for Race-Tech. Pietie drove the Fox to 3rd place, Jan forced his Golf into 2nd spot and Mike literally trying to destroy the Fox into 1st, out of all the previous difficulties with the conversion, This result ended in being the 1st time that Race-tech managed to occupy the complete podium in Class D. This accomplishment was the Highlight for me personally.

Herman Mathee and Mike Mathee in Class F Datsun 1200 – 2nd in Class F and 8th Overall

23F Herman and Mike Mathee - Datsun GX Sedan 1400 (2)_0.jpgAfter struggling with front end grip the 1st round of the Witzenberg Gymkhana championship at Flamingo’s, I was very positive in regards to the track changes made to the Datsun. I decided to

use the same front 13″ semi slicks as at Flamingo’s to truly see if the changes had any considerable effect on the grip, one option was to use wider more sticky rubber, but that idea was scrapped for the bigger picture as I’m using “Lil Datto” as my Ginny pig this year to learn the 1200’s handling characteristics and carry that info over to its bigger brother “Datto”. On my first run, entering the 2nd corner I immediately knew something was feeling familiar, but better, front end grip, a smile crept in and I was able to take corners as hard and fast as with the bakkie, a feeling that I really enjoyed in the past. Immediately I knew all the hard work was paying off. The 1st and 2nd round was rough on the car, my brother and myself, every corner was over braked, overdriven, sloppy lines, but boy was it fun to have a car with front end grip, a Limited Slip Differential, a Datsun motor that is very responsive and a overjoyed driver that was enjoying wagging the tail around. IMG_6543_0.jpgThe times was very good, but not good enough, I know this car has a lot more in it, it must just be found and that was exactly what I set as my next goal. This meant forget about the “lekker” and start concentrating on precise lines. Just before round 3 I told Mike that let’s try driving this round as tight as possible, and that is what he had to keep telling me. Somewhere deep very deep within me I just naturally found the ability to drive very precise lines, which resulted in a few scratch marks on “Lil” and a few leaves attacking Mike, this didn’t concern me once we heard the time, a full 2 seconds faster than our “lekker” runs. At the end of our 4 runs for the day, Mike and Myself managed to get the car to the finish 8th Overall and 2nd in Class F. My best Overall placing to date.

Jan van der Vyver’s view:
Jan van der Vyver and Herman Mathee in Class D VW Golf 1.4i – 2nd in Class D and 11th Overall

33D Jan van der Vyver and Herman Mathee - VW Golf Citi_0.jpgWhen we got to the Weskus Mall, it was very clear that is a course like no other. The surface was of very good nature, but there was a few bumps that was not the norm. We quickly got the cars prepared and then started to study the course. The study process was helped on my using a bicycle. It took me the better part of the first 3 runs to settle down, this could be contributed to the heat and confusing course. Luckily there was a 4 run added to the event, in which I had very good runs with very good times, but it was not enough to beat Mike, whom was very consistent and up to par on this event. It was great to take the full D class podium on the day as a Race-Tech team.

 

Pietie Erasmus and Mike Mathee in Class D VW Fox 1.4i – 3rd in Class D and 15th Overall

31D Pietie Erasmus and Mike Mathee - VW Fox 1400 (1)_0.jpg

Selina Botes and Herman Mathee in Class D VW Fox 1.4i – 7th in Class D

I’m very proud of Selina, she is currently competing in the Mens class and managed to beat one of the seasoned competitors.
IMG_6555_0.jpg

Pietie Erasmus and Mike Mathee in Class F Mazda 1000 – 4th in Class F

5F Pietie Erasmus and Herman Mathee - Mazda F1000 LDV_0.jpg


Pietie almost came 3rd, I’m pretty sure he isn’t too happy that we had 4 runs on

this particular day, as he was 3rd in Class until the beginning of the 4th, Anton managed to complete his first error free run for the day, which costs Pietie his 1st, 3rd place. A feeling that I know all too well, having lost my 1st, 3rd place at Mountain Mill Gymkhana in 2009 with an error on braking at the finish.

2011 Season Opener @ 9th Flamingos Langebaan Gymkhana

9th Flamingo's Route.JPG

This opening event for us as a team was very excited, due to a 2 new cars that was build and our outfits. The idea of the shirts started a last year, we wanted to stand out a little between the crowds and decided we need some branding as we are currently 9 members that drive and navigate under the www.race-tech.co.za name. This all started with only two friends that have managed to convince out friends to come and enjoy the sport. New members to the team is Selina Botes (driving Mike Mathee VW Fox) and Rudolf Marais, last year while we were standing in the sun waiting for our next run, Rudolf was busy slaving away on his restored Mazda 616. The car was completely stripped down, sprayed in a very nice blue, motor overhauled and assembled again, know the mammoth task start to get it in shape. Having a nice looking car only score points with the crowd, not with your peers racing against you. “Performance and handling does more for good track times than looks…”
During the off season, my brother, father and I sure as hell was not sitting around waiting for our older days to come closer. I decided that I needed to sell the Datsun bakkie, rust was taking over, this wasn’t a very hard decision to make, as I have been busy building a new race car for the last year. Mike bought himself a Datsun 1200 last year with big plans for, but since my car is still under manufacturing, I took over his big plans and decided that we will race with it until my car is done. The 1200 was stripped and the complete running gear was swapped with the bakkie and a few other bits like pedals, seats, front suspension and a completely new rear suspension was added to the 1200. This kept us busy for more or less 3 months. All this while I continued with building my new cars roll cage, but I have to admit, the race car was the one collecting dust half of the time.

We arrived at Langebaan the Friday evening, setup camp and went down to Flamingo’s to walk thru the route a few times, we had about an hour before it was dark, the route was new and would present a few challenges the next day, but at least we had a head start on learning the track. Once back at the camp site Pietie arrived with his Mazda F on the back of a trailer, we were so eager to help him offload it, that we forgot a few essentials, after utilizing a few jacks and ramps we got the trailer unstuck and could offload the F, “some say this was wasting time, we say this was an adventure”.

The next morning was pretty busy with getting our vehicles in order, going thru documentation and scrutinering. We had the normal first event issues like ground wires that came loose on engine rpm limiters, installing tyres in the wrong sequence etc. After a hour we were back in the groove and got every vehicle race prepped. We had another opportunity to walk thru the route before drivers briefing and the event started.

Jan van der Vyver’s view:
Jan van der Vyver and Herman Mathee in Class D VW Golf 1.4i – 1st in Class D and 6th Overall

IMG_9300-1_0.jpgThe day started off at 5:00 after the U2 concert. But looking at the skies we were going

to have a great day. Running at number 33 gave the nerves sometime to calm down. My first round was an 1:08 and I heard something from the commentators side, about me and wondering what I had for breakfast (a Whole lot of nothing at that time). After the first runs was completed, I realized that everything started to come together on the golf, her lifters was even “clapping hands”. The second runs in the D and H class was great fun. The little sleep and not drinking enough water caught up with me in the third run with a cramp in my left arm, but still a good time.

I was over the moon with the results of 6th overall, 1st class D and 3rd in class H. This was the most successful outing for me yet, and we can only hope that the rest of the season stays on par. Thank you to my wife for supporting me, and to all the people who helped with the car (Herman, Mike, Stephan, Leon, Marius, Lee, Bjorn)

Herman Mathee and Mike Mathee in Class F Datsun 1200 – 3rd & 5th in Class F

IMG_9048-1_0.jpgAll

the hard work of the last 3 months was at a end to get “Lil Datto” to where it is today, know it was time to get it on the track and start getting the feeling how the car handled. We only packed one set of tyres for the car, 14″ Bridgestone semi’s for the rear and 13″ Dunlop semi’s for the front. As we drive in n number order, I was the first one to take “Lil Datto” thru the route, and boy was it nice and also just as frustrating. As this was my first time driving a RWD vehicle with a limited slip differential on a gymkhana route, it took some getting used to, I’m pretty sure it will take a few events to get used to this. Our biggest concern was the exit speed out of corners and starts due to a long duration cam, but at the end of the day this proved to be a very nicely balanced setup, the concerns was with the front suspension, front end grip disappeared somewhere down the road, either during swopping the parts from the old bakkie to the car or while fitting the new rear suspension.

56F Mike and Herman Mathee - Race-Tech Datsun 1200GX - 1400_0.jpgGetting the car thru slow speed corners was a complete frustration and allot of swear words were exchanged between driver and suspension, it was under steering allot, yes it has a LSD fitted in the rear that aids with under steer, but this isn’t just under steer, definitely a few other parameters also at work. Even thru the higher speed corners the front felt loose, this normally the being driven at full speed and total confidence. As the day went on, we stole the Fox 13″ slicks and Mike tried them out on his second run, this was even worse, at least this helped with the decision to scrap them as they were done. Afterwards Jan borrowed us a set of old 14″ semi’s for the front. This made a huge difference but was not the answer, we had to sit down and figure a way out to get front suspension working.

At the end of the day Mike was able to bring the car home a Class position of 5th and I 3rd. Never in my life have I seen my brother exit a route and smiling more than with this little car. Thanks Mike for providing me with the opportunity to use your car until “Datto” is done. We are very pleased with the car, for its first real event it did very good, personally I think the car has allot more to offer, you just get that feeling when moving thru the route, if time is on my side, I will rethink the front suspension and make the necessary changes.

Mike Mathee and Pietie Erasmus in Class D VW Fox 1.3 – 4th in Class DIMG_9226_0.jpg

 

 

 

 

 

 

 

 

 

37D Pietie Erasmus and Mike Mathee - Race-Tech VW Fox 1300_0.jpgPietie Erasmus and Mike Mathee in Class D VW Fox 1.3 – 5th in Class D

 

 

 

 

 

 

IMG_9052-1_0.jpgSelina Botes and Herman Mathee in Class D VW Fox 1.3 – 7th in Class D

 

 

 

 

 

 

 

 

IMG_8972_0.jpgPietie Erasmus and Mike Mathee in Class F Mazda 1000 – 6th in Class F

 

 

 

 

 

 

 

 

IMG_9265_0.jpgRudolf Marais and Mike Mathee in Class F Mazda 616 – 8th in Class F

 

 

 

 

 

 

 

 

More Pictures – 9th Flamingos Langebaan Gymkhana

Datsun Coil Over Build

generic propecia

ery/main.php?g2_view=core.DownloadItem&g2_itemId=684&g2_GALLERYSID=TMP_SESSION_ID_DI_NOISSES_PMT” alt=”DatsunCoilOver089″ width=”307″ height=”230″ />Just have a look at these. They are an absolute blast to drive with, but do believe me, it took way more time than needed to plan and source the correct parts for the build, in fact the build went off without a hint of trouble.

All parts where sourced from local RSA suppliers, in my opinion this was the hardest part of the whole build, especially the shocks.

The biggest success to the build can be coupled to good planning. My biggest single piece of advice to anyone that plans on a build like this, spend a lot of time on the planning, it makes life easier.

Parts Used:

  • Datsun B140 LDV original

    Struts

  • Volkswagen Rabbit Shock Cartridge Inserts
  • 250lbs x 8inch Race Springs
  • Thread Tubes
  • Retaining nuts and cap
  • 14mm Rose Joints

Have a look at some of the images – Datsun Coil Over Build

Keep an eye out for a complete HOWTO on building a set of coil over's. The HOWTO will be based on the set in question, but will

be easily adobtable to other makes of vehicles with good planning and some forward thinking added to the mix.

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