Mag's Racing Updates

mike honcho said:
Where did you find the extra bite at off the line at?Looks like it's carrying the front wheels longer.Was it the cooler temps today?
Click to expand...

Torque convertor #3

We're trying to figure out which tire set off the 60' timer. It was a 1.28, but we can't tell if the front's were still up...

Passes 2 and 3 (no video yet) had 1.29 60 foots (with far less radical launches) so we think the front tires may have berely tripped them. Overall gain was a tenth of a second- from 5.95's to 5.85's.

It DROVE into the wheelstand. It did the launch it'd been doing, but then, it just started lifting up the front end...in the slowmo, you can see it actually stopped lifting through the staging beams (around 6" of lift), then it started picking up the nose as it started dumping torque to the ground, and wound up with 18-24" of lift before it finally set the nose down. Took dad by surprise- He saw amber, then suddenly everything went blue!
 
Just put a new toy on the car: http://www.gcdataconcepts.com/x6-2.html

Really not a bad deal for $129. It's all self contained, plugs in like a flash drive (they even supply a 1 meter USB cable), has the graphing utility on the storage chip (so any computer can read it), just really well thought out. All I had to do was solder on the leads for my external switch....that was the fun part, especially with such a wore out soldering iron, it doesn't even have a tip left. But I did get it done.

The orange LED's are the "power on" indicators. I'm going to add a relay to turn off the dash one though, so that it turns off if the ignition is on (rear will be always-on).










 
Just tested the accelerometer when we spun the car around in the garage. It's off by about 0.01G's, and accurate to 0.0005 G's. I can't complain, for the price.

Dad and I also split the cost of a GoPro- $70 him, $80 me. That will be here next week.

It's pro-mod night tomorrow night. We just ran DA to see what it's gonna be like, it's around 900 feet of density altitude right now. With the scoop air pan and DA, we should run around 5.75-5.78 tomorrow night hopefully..if not better.
 
Click to see the G-Graph:

Pass 1:


Pass 2:


(Didn't record pass 3 for some reason)

Pass 4:








 
normal_TOPMA_OCT_076.jpg


normal_TOPMA_OCT_157.jpg


normal_TOPMA_OCT_158_copy.jpg


normal_TOPMA_OCT_077.jpg


normal_TOPMA_OCT_156.jpg
 
The rear axle is pretty much out of the car right now. The driveshaft and shocks are the only things holding it in place.

Would anyone care to find the cause of why our car went left when it loaded the rear suspension?

The scary part is, 4 pairs in front of us on our 3rd pass, a car ripped the axle out of the car on launch. Had a heim rip open. We could have very well done the same thing.

68882_10150099763844606_771454605_7354704_8193902_n.jpg


Sneak Peak: (hint: slowly double click the video so it opens in a new window)

[youtube]q-L0tnd_vyg[/youtube]
 
10-17-10- We went to North Star Dragway in Denton yesterday for the Twin Bracket races. This was only our second bracket race, and we just had different issues all day long. Our first pass wasn't too bad, with a 5.83 to start the day at 9:30 in the morning. Our second pass had an issue, as the car shut off for an instant of a second, and came through at a 5.85. For first round, we red-lit by .02, and the car shut off completely for over a tenth of a second, before coming back to life and trucking down the track to a 6.02 at 116 (needless to say, we lost on a 5.84 dial). Since we knew there would be plenty of time until time trials for the night race, we took the opportunity to comb through the wiring of the car, found what we believed to be the source of the power failures, and corrected it.

In the time trial for the night race, we ran a 5.850, and the power issues had disappeared. However, the weather changed dramatically, and we dialed a 5.83 for first round of our first tech card. We underpredicted the weather, as the car hooked violently and turned to the right at the launch while wheel-standing, thus having to get out of the throttle and let everything calm down. A chase ensued at the top end, and the opponent crossed the finish line first, on the brakes, with a margin of victory of 0.05 seconds.

For the first round of 2nd tech card, our weather station showed a density altitude of 254 feet. Based on the previous run, we knew the car would bite hard, so a tire pressure change was made. As for the run, the car did indeed bite hard as predicted, and we broke out with a 5.802 on a 5.81 dial.

G-Force Data:

http://magnethead794.com/coppermine/albums/McD_Fam_Racing/camaro/run1.jpg
http://magnethead794.com/coppermine/albums/McD_Fam_Racing/camaro/run3.jpg
http://magnethead794.com/coppermine/albums/McD_Fam_Racing/camaro/run5.jpg
http://magnethead794.com/coppermine/albums/McD_Fam_Racing/camaro/run6.jpg
http://magnethead794.com/coppermine/albums/McD_Fam_Racing/camaro/composite.jpg





[youtube]y1tdE9-XTFI[/youtube]





 
I compiled the gopro video on it's own and cranked the brightness as far as it would go.

[youtube]PX-7jWNI8pA[/youtube]
 
ah, i wondered that. previous pics were from daytime or dusk so i assumed the video was shot with ample daylight.
 
SlowNeasy said:
ah, i wondered that. previous pics were from daytime or dusk so i assumed the video was shot with ample daylight.
Click to expand...

9:30ish PM. It might work better during the day, give or take windshield glare (You drive into the sunset at Denton) So it'd have to be a morning run.

I'll try that view for the first pass on saturday, then do center mount for pass 2, guages for pass 3, and dash-on-windshield for pass 4.
 
Welp, no racing today, rained out. Which means next weekend will be our last race of the year.
 
We dun good tonight. Entered a $50 8 car gamblers race, came home with $100 cash- runner up. Dad was dead late on the tree (staging duel), and we broke out to boot. Dragster in other lane was also dead late, and ran right on his number. Left car & trailer at track overnight (tarped with a good 35 or 40 bungee cords :p ), It's 1AM now and we're leaving at 7AM.

Test Run 1:
.0207
1.2698
3.7274
5.8084
117.74
Atemp: 53
Hum: 38
DA: -227
TrackTemp: 68.5

Test Run 3:
.0283
1.2790
3.7136
5.7870
118.05
Atemp: 49
Hum: 48
DA: -468
Tracktemp: 65.5

Round One:
0.0049
1.2565
3.7006
5.7767
117.37
Atemp: 42
Hum: 65
DA: -875
Tracktemp: 60.3

Round Two:
0.0061
1.2945
3.7271
5.8006
118.17
Atemp: 41
Hum: 69
DA: -934
TrackTemp: 58.0

Final Round:
0.0972 (to opponents .0491)
1.2696
3.6950
5.7665
117.83 (on brakes)
Atemp: 40
Hum: 72
Tracktemp: 55.0
 
So, what happens when you have 600+ ft lb of torque, launch at 6000 RPM, have a 1.76 first gear, a 4.88 rear gear, and try to rotate the earth?


Nothing pretty. We won first round, but being home at 4:30 wasn't in our plans.
 
preliminary:

We heard a grinding noise when coming to a stop in qualifying. Since it was only when stopping, we thought it was just the brake grabbing harder from the moisture in the air. After coming back from first round, dad saw a giant oil patch where we were parked, and climbed under to investigate. The pinion was just oozing gear oil, entire underside of car within 3 feet of pinion was soaked in gear oil. Grabbed the pinion, it was free as a bird.

http://magnethead794.com/racing-team/ said:
11-06-10-We went up to North Star Dragway in Denton for thier Bracket Season Finale, as well as the Gambler’s race the night before.

Our Round Win count continued increasing, after going 3 rounds in Top Sportsman last weekend, we picked up where we left off, going to the finals in the Gambler’s race on Friday night. On Saturday, our two qualifying passes were identical to the 330′ cone (identical to 4 digits at 60′, to 2 digits at 330) and only .01 off at the stripe, 5.79 on first pass to a 5.80 on second pass. In first round of the Gold Card race, we took the win with a 0.0008 second margin of victory, running a 5.82 on a 5.80 dial-in. However, not all was well, as a grinding noise occured under braking in the shut-down area. Upon returning to the pits, it was found that the pinion bearing had failed in the differential.

A mechanical failure was not the way we wanted to end the season. While we can say we ended the season on a win, an event win would have been much better than a round win.

We have alot of work to do, and alot of homework to do. We hope to have everything buttoned back up and see everybody at the track again in March.
Click to expand...

This is a Dana 60, mind you. not some POS 12 bolt or something.

Not very good pics from my phone, but you can see the ring gear is wasted. chipped all teeth at both inside and outside.











 
looks like you did real good for the season, not to mention the first season with a new car. plenty of time to get ready for an even better season next year. well done. :)
 
SlowNeasy said:
looks like you did real good for the season, not to mention the first season with a new car. plenty of time to get ready for an even better season next year. well done. :)
Click to expand...

Thanks. It was dissapointing because we had one the round, and entered three races, the car was actually being consistent. But alas, we went to our first final round on Friday night, we won a reaction time contest last month, and we won rounds, so yea, we did good for a fist season.

We're having headers made after thanksgiving, then pulling the entire driveline off at once. Heads are getting shaved .030" to put us at 15:1 compression, change or at least re-degree the camshaft, trans is getting a front-to-back rebuild (may get a new case as well), and diff is gonna have new gears thrown in, and we're getting new tires. A majority of the electrical is going to get re-wired, thinking about getting a data logger, and going to find a way to mount some (at least one) headlamps on it so dad can see at the top end.
 
So, that car is at Charlie Stewart's getting headers and anti-roll bar made/put on. He called us up today and said "By the way, ya'll were right, you had shock problems. Your shocks are about as useful as a slinky- the shafts in both were completely free in both directions."

Scary thought.
 
So a quick update (no pics right now)

There is only an orange shell left in the garage. Wiring, engine, trans, axle, and everything between- gutted. In a few days, you'll be able to see clear from the front of the car (which isn't really defined anymore) all the way to the back of the car. Cutting out the tinwork sometime this week and modifying the back part of the chassis.

Starting back from square one.

Here's what the headers looked like when they were almost done. They're wrapped up to get shipped out to tennessee this week to get plated at Nitroplate. These pics range from Thursday (when we got the car back) to Yesterday. We pulled the motor last night, and I striped out all the electrical today while dad tore the engine down. Also ground out some of the bondo from the wheel tubs and fenders, to fit the bigger tires. Taking the axle over to Baertrax today (technically, since it's 3:30 AM) so they can change the gears and bearings, we're waiting on some transmission parts, headers ship out wednesday, I should have electrical finished tuesday, then we'll start cutting the tin from the back of the car. Axle will be finished thursday, we'll bring it back, finish up the tinwork friday and saturday, put the axle back in on sunday, and start working on the trans.

Thursday- got car back
Friday- packaged headers and pulled axle
Saturday- pulled transmission and engine
Sunday- started electrical, tore down engine, clearanced wheel tubs
Monday- send out axle, continue on electrical & engine tear down
Tuesday- finish electrical, start on tinwork
Wednesday- send off headers, work on rebuilding rear chassis
Thursday- pick up axle, continue on rear chassis
Friday- finish up tinwork
Saturday- paint everything
Sunday- put axle back in and modify passenger seat
Monday- finalize electrical routing and passenger seat placement, repackage and send back to RPM

Goal is to be hitting the track sometime around mid february.

normal_IMG_1246.JPG


normal_IMG_1243.JPG


63516_10150145335959606_771454605_8066048_2111577_n.jpg


164809_10150146581109606_771454605_8086436_6361045_n.jpg


163926_10150146581249606_771454605_8086439_7329603_n.jpg


163116_10150148713599606_771454605_8137076_3822779_n.jpg
 
We're behind schedules, but what project isn't? Cut the back tinwork out of the car today, was fairly painless. Cylinder heads are CC'd and ready to be sent out, we re-degreed the cam, checked valve and cylinder head clearances, and I finished up the electrical work. Axle won't be done until the end of next week, but no hurry there, it just gets in the way.

Wednesday- degreed cam, finished head prep, finished electrical, cut rear tinwork out, sent headers out

Thursday- Dad's dealing with the heads, I have a house call, then we'll probably cut the square tubing for the new rear tinwork, maybe do some mocking up.

Friday- finish up working on the tinwork

Saturday- make the filler panel for the tin work (will have to find a sheet metal bender more than likely) and modify passenger seat

Will be playing by ear after that..probably start on the transmission.
 
Took the heads to Chris Frank. Just a FYI, he worked in the Hendrick Motorsports Engine Room for several years.

Here's how the back of the car looks.

164107_10150150688814606_771454605_8178169_4597913_n.jpg


162814_10150150688869606_771454605_8178171_5266428_n.jpg


164372_10150150688949606_771454605_8178175_1406515_n.jpg
 
Update:

Cylinder heads and headers are back- went from 125cc to 115cc by milling the heads. Everything checks out good. The OBD is wired and ready, waiting on intake manifold this week to finish engine.

Pulled trans apart, pretty much nothing left of it in front of the clutches. Band had entire chunks missing, front pump burned up, servo piston had a bad seal, the band's alignment bolt was bent (not bent, but BENT). Clutches were brand new, still had the ID labels legible on them.

New soft parts and front pump should arrive next few days.

167601_10150163565154606_771454605_8408245_3165492_n.jpg


168090_10150163568089606_771454605_8408263_321952_n.jpg


163171_10150163568159606_771454605_8408264_2985663_n.jpg
 
Dropping the engine in tomorrow, if all goes to plan. Putting intake on tonight, and priming the oil system.
 
You must log in or register to reply here.
Back
Top Bottom