What has Dave Been Up To? 29th AUG 2015: 10.66@126.09mph!!

dangerous · 2006-10-31T03:22:08+00:00

Well, after the Warwick '06 meet, I decided to make some changes to the car. These include : Purchase some quality nozzles for the fuel system and get it re-flowed, Adding an MSD 6AL, Putting stock width guards on the car, And, upgrading the CV joints. The CVs and flanges were robbed off my crashed Chassis car, and are Commadore items. The drive flanges and stubs have had locating rings welded to the standard items. Some clearancing of the bump stop bracket was needed. These CVs use a 28 spline axle the same as a 930 CV joint. My axles are made by Romac here in Brisbane, and are 400mm long. You can see how I cut a groove in the outer, to reduce some of the added weight. This is pretty conservative, because I dont want a failure. Perhaps I will remove a little more weight later. [ Edited on 31-10-2006 by dangerous ] [ Edited on 2-11-2006 by dangerous ] [ Edited on 14-3-2007 by dangerous ]

mactaylor Custom Title Time!

1,005 posts · joined Aug 2007 · 10 Apr 2015, 9:04 am

#1011195

very cool dave!!!!

EVERLAST CONCRETE TANKS
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adlbeetle66 Under the car.........again!

1,476 posts · joined Aug 2014 · 10 Apr 2015, 9:21 am

#1011198

👍 Very Nice.

vassy66T1 Wow ... are U reading this?

2,120 posts · joined Jun 2003 · 11 Apr 2015, 8:12 am

#1011253

That is awesome!
Well done

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 · 26 Apr 2015, 10:18 am

#1012153

hellbugged 48's and straight cuts

5,080 posts · joined Apr 2003 · 27 Apr 2015, 5:33 am

#1012193

Always awsome

Times?

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 · 27 Apr 2015, 7:59 am

#1012196

Only got 3 runs in, so mixtures not quite sorted.

The track and dyno are always different for tune.

Started rich and was a good baseline,
then went back to the dyno setting,
it felt sharp, but lost a bit, since the run was out of shape.

Last run was the same tune and lost even more mph as it got cold.

So next step is to try a little more fuel, at an event where I can get a good number of runs.

10.735 @ 124.90mph
10.766 @ 125.11mph out of the groove in 1st and 2nd!
10.790 @ 123.97 felt good but mph down likely too lean.

Sixty foot times:
1.425
1.445
1.466

1/8 mile:

6.807 (pb)
6.848
6.834

mactaylor Custom Title Time!

1,005 posts · joined Aug 2007 · 27 Apr 2015, 4:52 pm

#1012209

Nice rinckles dave!!!! Where did you dyno? On the coast? pretty fine line!

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dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 · 27 Apr 2015, 11:53 pm

#1012242

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 · 28 Apr 2015, 6:56 am

#1012248

vassy66T1 Wow ... are U reading this?

2,120 posts · joined Jun 2003 · 28 Apr 2015, 7:27 am

#1012251

Very good!
You are a patient man. I am constantly surprised by how much development goes on even at the track.

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 · 28 Apr 2015, 9:40 am

#1012255

Yes, dyno was near the coast,
but the air at the track was pretty good except higher humidity.

I am always a little cautious about making changes too soon without some thought,
or a clean run, of which the 2nd pass was not!
so the last two runs were the exact same tune as the dyno.

After seeing the mph drop like it did on the second run,
I am confident it needs a little more fuel at high rpm.

tassupervee That really hurts doesnt it!

1,171 posts · joined Sep 2003 · 29 Apr 2015, 10:08 am

#1012295

Hmmm... idling a bit roughly Dave. Clean the air filter???
I reckon it might need a new dissy cap and plugs.................

Plus the oil is too thick whichdefinitely makes them run roughly.............! Try a 38w insted of 40w eh? 😀

Good lord I get a chubbie every time I see something new made for this engine. Astounding.
Cheers Dave!!!!

Im not a complete idiot, quite a few parts are missing....

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 · 30 Apr 2015, 1:47 pm

#1012357

tassupervee That really hurts doesnt it!

1,171 posts · joined Sep 2003 · 30 Apr 2015, 2:41 pm

#1012361

Cant watch it. Marked private

E

Im not a complete idiot, quite a few parts are missing....

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 · 30 Apr 2015, 7:22 pm

#1012382

how about now?
🙂

tassupervee That really hurts doesnt it!

1,171 posts · joined Sep 2003 · 30 Apr 2015, 9:02 pm

#1012392

Just gave the limiter a bash into 3rd!!!! Not a lot in it...
Damn that thing leaves well tho.
E

Im not a complete idiot, quite a few parts are missing....

dragvw2180 Officially Full-On Dubber

393 posts · joined May 2006 · 1 May 2015, 1:36 am

#1012401

Nice pass Dave

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 · 18 May 2015, 9:30 am

#1013389

DOH!

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 · 18 May 2015, 9:33 am

#1013390

Got a couple of runs in before the stub axle broke:

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 · 18 May 2015, 9:40 am

#1013391

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 · 18 May 2015, 10:50 am

#1013394

HappyDaze Superannuated

2,887 posts · joined Jun 2009 · 18 May 2015, 11:18 am

#1013395

Do you know what caused the stub-axle to fail, Dave ? 😬

According to a friend of mine, who once ran Borg Warner and knows a lot about steels used for axles, it is very difficult to get hold of 'good' material these days.

I'd rather wear a Beetle out by racing it than by polishing it!

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 · 18 May 2015, 12:28 pm

#1013399

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 · 18 May 2015, 12:31 pm

#1013400

Putting it down to fatigue, Greg.
Nearly 25 years of racing,
and it is just a VW part with the 930 flanges welded on.

Either way, looking at upgrades too,
since this could have been messy if it failed at speed.

HappyDaze Superannuated

2,887 posts · joined Jun 2009 · 18 May 2015, 12:42 pm

#1013402

Ahhh, fatigue..after nearly 55 years of racing, I know the feeling. 🙄

I'd rather wear a Beetle out by racing it than by polishing it!

mactaylor Custom Title Time!

1,005 posts · joined Aug 2007 · 19 May 2015, 2:16 am

#1013454

Could have been scary in the top end! looks cool thou!

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NUG637 Officially Full-On Dubber

372 posts · joined Nov 2009 · 19 May 2015, 9:05 pm

#1013512

Bit of a noob question but did you make a pass and hear/feel it go or just find it while tinkering?

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 · 19 May 2015, 9:49 pm

#1013517

Felt it let go on the start line Myles :

tassy74ida Commited Dubber

58 posts · joined Jun 2009 · 20 May 2015, 10:24 pm

#1013601

Bumma

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 · 26 May 2015, 4:01 pm

#1013965

Looks like the baffles in the tank have been restricting fuel flow.

This is the same tank that was in the car 25 years ago,
when PK used it for hill climbs, and all I have done was increase the outlet size.

I put a camera up there, (the tank), and it is certainly not good for mechanical injection.

So time for surgery.

Return lines should never be above the outlet.
Also, the volume available, should be more than the pump can draw, or else it can draw air.(3.6 GPM)

Over time the gaps in the baffles would re-fill the cavities, but not fast enough to keep up with the pump at high rpm.

On this tank, with these baffles, I had less than 3 litres available,(from 10lt tank)
which was barely enough for a 4 second dyno pull,
but not likely for a full 1/4 mile.

My blown combo must have just got by because I towed to the start, (full tank),and had virtually no return fuel aerating the supply, and lower pump rpm.