MotoDelta Motorsports

9/8/2008

NASA Nationals in 3 days

Filed under: My Racing Journal — cstreit @ 1:11 pm

Well the NASA National Championships are upon us.

We placed 2nd in our inaugural year 2006 and again in 2007.  This year the competition is even more intense.  If the preparation for the event is any indication of our chances success, I'm hoping we'll do well again!

In the last few weeks I spent a lot of time going over the racecar and tweaking the setup based on findings from this year.  I also installed a new front bumper and splitter (after the off at Road America)  that I'm hoping should improve the cars handling.  We're nearly done packing and will be hitting the road for MidOhio tuesday afternoon (Sept 9th) and will arrive Wednesday morning to begin getting ready.

 The format of the weekend is:

Thurs Sept  11th - Practice day
Friday Sept 12th - Qualifying and heat race #1
Saturday Sept 13th - Qualifying and heat race #2

Sunday Sept 14th - National Championship race.  4:15PM EST.

The championship race on Sunday will be televised at http://www.speedcasttv.com  Wish us luck!

 Chris

 

 

8/5/2008

Road America 8-2-08

Filed under: My Racing Journal — cstreit @ 9:36 am

We just got back from a successful weekend at Road America.  2nd in class and 2nd overall both days.  (With first place going to the Bimmerworld/MotoDelta BMW of Ryan Osiecki.)  Ryan and I set the fastest times of the weekend by far in Group A.  GTS "Kamp Stoopid"  came home with multiple podiums both Saturday and Sunday.

http://video.google.com/videoplay?docid=-4059698561805277519&hl=en

6/5/2008

Grattan is next

Filed under: My Racing Journal — cstreit @ 10:16 am

We'll be heading to the newly repaved Grattan Raceway this coming weekend.  Weather looks marginal but I'm hoping we get at least one dry day to test out the new surface.  Hope to see everyone there!

4/21/2008

First race of the season

Filed under: My Racing Journal — cstreit @ 11:43 am

We just finished our first raceweekend of the season.

 The first one never goes off without a hitch.  We got the motorhome mired in a soft patch of the paddock, I lost a rear wheel bearing, and my shift knob came off in the race preventing me from getting into second.  Didn't break anything expensive though!

I started off 4th overall and first in class, held my class position and picked up two overall positions during the race.

 33MB Video here:  http://www.gruppeb.org/TrackVideos/BHF_4-20-08_Raceshort_0002.wmv

or for the bandwidth challenged: http://www.youtube.com/v/pqW3pnh762Y&hl=en

4/15/2008

2008 Schedule is up!

Filed under: My Racing Journal — cstreit @ 12:28 pm
Date Race Track
     
April 20 MCSCC SP Class Race Blackhawk Farms
April 26-27 NASA German Touring Sedan Series Gateway Motorsports Park
May 25 MCCC SP Class Race Blackhawk Farms
June 7-8 NASA German Touring Sedan Series Grattan Raceway
June 29 MCSCC SP Class Race Blackhawk Farms
July 19-20 NASA German Touring Sedan Series Autobahn CC South
August 1-3 NASA German Touring Sedan Series Road America
Aug 9-10 MCSCC SP Class Race Blackhawk Farms
Sept 11-14 NASA National Championships Mid-Ohio Sports Car Course
Oct 4-5 MCSCC SP Class Race Blackhawk Farms
Oct 13 NASA German Touring Sedan Series Autobahn CC Full Course
Oct 4-5 MCSCC SP Class Race Blackhawk Farms
     

11/16/2007

NASA Nationals 2007

Filed under: My Racing Journal — cstreit @ 9:58 am

With every advance in my racing history the complexity and challenges faced have increased by the same amount.  I can't imagine being able to do this without a few key people that have provided support, inspiration and encouragement.  Jerry at EuroEastParts.com has been a constant source of these three important things for many years and has given me the encouragement and, sometimes, counseling that I needed to push through some tough times getting to where we are.  Thanks also go to my wife, Esther,  who has tirelessly supported our racing effort with both her presence, patience, and talking me off the ledge for many years. Special thanks go to both of you for all your help, this wouldn't be the same without you. I want to thank the companies that help us in sometimes large, and sometimes small ways.  EuroEastParts.com provides immeasurable support every year.    THis year we were also helped by LNEngineering who made the cylinders for our engine.  Mobil-1 Racing for breaking out a barrel of the coveted racing formulation oil for said engine, Hayden at WEVO spent a lot of time helping me with our transmission,  Tarett Engineering with some great new sway bars,  and MotoDelta Motorsports (ie, Moi). So lets get in to the action! We started out this years NASA National Championships with the goal of being number one.  With the amount of both physical and financial effort that this takes, shooting for anything less doesn't seem worth it! To that end, we packed up nearly the entire shop into our 24' trailer and headed off to MidOhio Sports Car Course this year for another shot at the national title. Jerry St.Germaine and Mike "The bagel" VanWyk came out to help! 

I decided to invest in an extra testing day with Mid-Ohio’s resident instructors. My instructors for the day were Tommy Byrne, ex F1 driver, and Dave Roush. We started the day by reviewing some in-car video. They gave me some pointers regarding turn-in points and the flow through the back section of the course. Most notably though, Tommy told me that I was "working the wheel" way too much and I needed to slow down my movements. I was chewing on this suggestion as I motored down to the pit-out to do some lead/follow exercises with him. He looked over at me and said, "You’re driving an early Porsche car this fast? Forget all that *^&% I told you about working the wheel, you have no choice in that car! Show these guys the size of your arms, I bet those guns are big from driving that thing." Comforting and disturbing words all at the same time.

We finished the day doing more lead-follow, some ride-alongs, and reviewing more video. They put a solid emphasis on flow between the difficult sections of the track where most time is lost for newcomers. Overall it was a good day, I felt that I had to make some adaptations to the instructions for the peculiarities of the 911, but got good value for my money.

We anxiously tracked the weather and predicted temperatures for the upcoming 4 days remaining to make proper tire selections. Thursday was open practice; Friday and Saturday were heat races. In these races you earned points that determined your starting position for Sunday’s final championship race.

On Friday I qualified 2nd, I started the race in 2nd of 48 cars, also 2nd in class. It  seemed that everyone was going for broke this day as there were numerous contacts with inanimate objects and car-to-car today. It was starting to be a real concern with the series directors. As a director I have no official capacity at Nationals because there are too many potential conflict of interest issues, but our opinion presumably carries some weight. The car was running well though the weather was warmer than predicted and the soft compound tires we selected weren’t quite the best choice for the day. I finished 2nd in class behind John Haas in another Porsche, in front of Jamie Fuerenberg in a BMW M3. The three of us were sent to scales for weight verification and to the dyno to check our horsepower. John’s car came up around 14 HP higher than earlier in the year so he was DQ’d for the day which gave us first in class and a few extra points for Sunday. More good news from the day, the dyno showed the HP on the engine has held steady throughout the season giving us good thoughts about the engine. I need to find 12HP or lost 125 pounds to optimize the power-to-weight ratio for our class, but for now, I’ll take what I can get on location.

Saturday brought more of the same weather but with it, some concern with the car. The left rear axle nut needed to be re-torqued every session meaning the sealed rear bearing was failing and if that weren’t enough there was a pretty wicked knock being projected through the rear-end from the right side of the car. It got progressively worse in each session and there were concerns about the car holding up through the weekend. I qualified 2nd for Saturday’s heat race due to a higher-classed car dropping down into our class, this car was to change back later, but it stole some much desired points. As I write this it brings up the rather frustrating nature of competition when things come to a single-event finale. Despite intense levels of preparation there are so many factors outside of your reasonable level control that impact your results. This week we were impacted by inaccurate weather forecasts, competitors changing classes at the last minute, and the inevitable random mechanical issues that manifest themselves when you push your equipment to the limit. This is not to say that there weren’t also things that worked to our advantage… …but when you join the best of the best for head-to-head competition and margins of victory come down to a few hundredths of a second, these "swings of fortune" can often determine the winners rather than the actual competition.

Chris Streit followed closely by the BMW M3 of Jamie Fuerenberg

The car felt loose today but I held 1st place for the first 10 minutes. On the opening lap I was on the outside lane in turn 1, the car to my inside braked too late and ran wide forcing me off-line and had to run on the far outside through this fast corner. I lost some momentum gathering up the car in the dirt and marbles and was passed by one, two, three M3’s from a lower class freight-trained down the inside line. I tried to get back on-line but there was no room between them to slot back in and I was off-line. I had to back off and settle in behind them. This placed Fuerenberg right on my bumper throughout the session. I kept searching for an opportunity to pass them back because my lap times were suffering by nearly 4/10ths of a second being behind these cars. I knew I could have passed one or two under braking or a straight, but if I couldn’t pass all three at once, I would be forced off-line through the next few corners and could very well end up losing my position in class. Before I could make that pass, Fuuerenberg made a very late braking maneuver entering the keyhole turn a few minutes later. I was forced once again to run wide to avoid contact and lost the drive out of the corner. He was able to keep in front of me taking a defensive line for the last 10 minutes and I finished 2nd in this session. I was quite aggravated from having to trade my position to keep my car intact, but there’s not much you can do after the fact. Unfortunately there will always be drivers who are willing to accept contact in order to gain a position, I am not.

The points for Sunday’s race start were added up and I was placed on the pole for GTS4! Great, but now I’m really sweating. The forecast for tomorrow still showed as being in the 50’s all afternoon and overcast so our choice of soft-compound tires should be a good one.

We checked tire pressures, torqued the wheels and axle nut, filled the tank and after some last minute sway bar tweaking headed out to the grid.

Sunday’s race started out as an emotional one. The prior month, one of our GTS drivers, John Engle, was killed in a chance accident at Mid-Ohio. As a tribute to a man who was very well liked and left a legacy of very good memories the entire GTS field ran a "missing man" formation for our first lap. It was the hardest race lap I have ever driven. God Speed John.

Remember last nights weather forecast of 50 and overcast? Well it was almost 80 and sunny. Jeers to the weatherman, I knew our tire choice was wrong but we didn’t have any other options, it was too late. We completed our warmup lap and took the green flag. Too make matters more concerning the rear axle was making a LOT of noise and the rear of the car was actually moving a bit. When I did a post mortem on the car later on in the week, turns out the bearings in the axle, left wheel, and right side differential carrier had all failed completely.

I had to take a very defensive and aggressive line through the first few corners and went side-by-side through the first 4 corners with two other cars (yes, 3 wide) because I knew I couldn’t give up an inch. I had the outside line so I really had to work the car to hold my speed and line. After 6-7 corners we were starting to slot-in single file and I could actually relax a little and work on watching Jamie Fuerenberg in the 2nd place BMW. As the race progressed traffic started becoming a very strategic item, dictating the gap between us based on who got the better break through. I managed to pull a 5-6 car gap after the first 25 minutes of the 40 minutes race.

Close racing at the front.

As we neared the 30 minute mark I saw John Haas in the yellow Porsche putting a lot of pressure on Fuerenberg. I was hoping that this would allow me to pull another gap because the M3 was right on my bumper at this point. I don’t think I took a standard line once through the entire second half of the race. Instead I was having to take each corner in "defensive mode". Blocking is not allowed in NASA so once you’ve picked the inside line down into a corner, you must hold it. This put an extra load on the tires and they were slipping badly.

Each corner was a mighty struggle for car control. Every corner, every went like this. I’d enter the corner inside to keep the M3 from taking that line. Brake with the left side of my right foot, while blipping the throttle with the right side, working the clutch for downshifts with my left foot. Once I finished braking and downshifting, I’d turn the wheel in, then switch feet on the pedals, lightly pumping the brakes now with my left foot, and working the throttle for additional steering with my right. I had to use the brakes to get the car to turn in or it would just plow to the outside. I knew if I made a mistake, I’d get passed.

With 5 minutes to go I knew the white flag was coming. We entered "madness" (a very challenging momentum section at mid-Ohio) and the Haas Porsche made a nice pass on the M3. I knew he was going to attempt the inside pass going into thunder valley. I turned the wheel to take the inside and the car just didn’t respond. I tried pumping the pedal ralley style again but the front tires started to lock, they were gone. Haas easily passed me to the inside taking 1st with only two laps to go.

I gave myself the briefest of moments of regret but needed to focus on trying to get that position back (unlikely with the condition of my tires) and holding the 2nd position. Jamie Fuerenberg must have smelled weakness and stepped up his efforts to get by in the two remaining laps, but I was drawing deep from the First National Bank of Ralley Driving. He told me later that he was pretty sure he saw more of the side of my car those last two laps than the rear, since I took early every corner in full slide/opposite lock to keep some semblance of speed.

We had a real shot at 1st this year but those outside influences ended up being our biggest enemies. That’s racing! Finally the checker came out and we finished 2nd in the National Championships again in 2007. Not bad for the oldest car in the GTS Nationals!

On to the Champagne and trophy girls!

 

 

6/12/2007

Gearbox done?

Filed under: My Racing Journal — cstreit @ 8:23 am

Some of you probably winced every time I posted here about another blown gearbox.  I think that's over.

I've been racing 8 years now and for 6 had maybe one DNF...  Then in the last 1.5 I accumulated over 6 all due to gearbox failure.  Most were related to failures of the 3rd gear dog-teeth pulling off the gear and/or other components being damaged as a result.  This included 3 blown syncro assemblies, 2 blown guide-forks, several damaged gears, etc...  Needless to say the cost of my 915 was well exceeding what is reasonable even for my heavily modified GT car.

At some point you come to the realization that doing the same thing (rebuilding with new gears/syncros) over and over and expecting a different result is a bit silly.

I've thrown my hands up several times and asked someone else to help make it right several times without success.  The last time I wrote a substantial check the place assembled it improperly TWICE (giving them one more chance to do the right thing before I post who).  Okay it's time to take matters back into my own greasy hands.

I turned to WEVO and Gaurd Trans for help and got what I was looking for.  Hayden@Wevo helped me assemble a package for my 3/4 shift plane to address the issues I've been having, mainly weak dog teeth and pulling off dogs.  He guided the modification of the Gaurd Transmission pro-shift syncros to fit my 915 3/4 gears and had them peened on to the gear itself.  We had some initial challenges but Hayden stuck with me thru the whole thing, unlike any of the other vendors.  Literally spent a massive amount of time on the phone with me making sure we got everything setup and running properly.  THANKS Hayden.
 
I've got one event on the gearbox now, shifting was weird at first with 1, 2, and 5 being syncros and 3/4 being dogs but you get used to it quickly.  The shifting into these is VERY fast and VERY positive.  The collars you see on the shift-rail are WEVO's locking shim kit to ensure the shock-load from teh new engagement style do not move the fork.

 

 

3/23/2007

Installing front Camber boxes

Filed under: My Racing Journal — cstreit @ 7:26 am

In an effort to get more road-holding camber into the racecar I am ditching the offset ball-joints and upper camber plates and putting in some true camber-boxes into the front of the racecar.  It is a fairly major operation with 3D locating of toe boxes into the existing chassis, and some substantial cutting into the chassis itself.

 Used a laser and protractor to locate first cut line.  Vertical cut lines in place, 6 degrees from vertical.

  It took some serious courage of conviction to start hacking into the chassis once all the lines were drawn out.  I had to cut out part of the support bar in the center which I'll weld back in later.  Here's the first box tacked into place.

Then through the magic of the internet, an houir or so of grinding, trimming, and lots of re-checking the angles, the boxes are in, painted, and the support bar welded back in place!

3/16/2007

New front end aero for 2007

Filed under: My Racing Journal — cstreit @ 10:18 pm

I've been searching this winter for proper front-end aero for my racecar without finding anything satisfactory. 

First I wanted to build some decent "diveplanes" for the car after successfully experimenting with them last year.  I found out that they don't so much provide front-end downforce, but they somehow help evacuate air from the wheel wells and hence underneat the car.  After studying a lot of pictures from DTM cars I fabbed these up out of 1/16" steel and powdercoated them gloss black.  (Yeah, I recently purchased a powdercoating setup for the shop, nothing metal is sacred now!)

I think the trailing edge is way to aggressive after building them, so I'm going to cut down the swoop considerably.

I've also been searching for a decent splitter.  The only ones I found for sale were made for standard 965 bumpers and not the ones with the integrated winglets.    Even the ones that I found would fit would require a lot of modifications and didn't give me the drop and adjustability I wanted.  Solution?  Build your own.

I set the bumper on a large piece of 1.4" luaun plywood and traced the outline.  Then I used a compass to draw a 2" extention past it, and also behind it to give me "adjustable protrusion." 

I then cut them out with a scroll-saw.  Now I had the pieces for two dimensions.  I then took some long strips of heavy carboard (for flexibility in following the countours) and hot-glued them to the two form pieces.  I think I need to strengthen the mold so I can re-use it later.  I covered the blank in metal tape to give a good non-porous surface and coated the form in some spray-on tacky grease to release the fiberglass.

HERE IS THE MOLD:

1 quart of bondo fiberglass resin and about 7 square feet of cloth on it's way.  Cut it into strips and layed out about 4 layers successively over a day.  Cured under heat lamps.

I pulled the part out out of the mold, trimmed it, filled in the pinholes with more bondo filler and sanded it out.  Painted today.

 

All-in-all I'm pretty happy with how the new aero devices came out. 

Total cost of all materials:  $55.
Labor - 15 hours or so...

Result?  Pretty okay.

11/15/2006

Nationals

Filed under: My Racing Journal — cstreit @ 7:06 am

Well I've waited way too long to do a writeup for Nationals...

So I thought to at least writeup the results and post some pictures:

Friday qualifying race: 2nd place.
Saturday Qualifying race: 3rd place
Sunday Final Race: 2nd place.

We had an awesome battle with Chris Orr, and caught some lucky breaks. Next year we shoot for first!

Heading into the keyhole:

Jerry St.Germaine of Euroeastparts.com and the GRuppeB crew.

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