Time attack beetle

[Wally]

Looks brutal! Tnx for the update :-)

[judgie]

have the cut down rear wings made any differance? been thinking of this mod for mine but only if it works. car looks good and great to see it out racing.

[NO_H2O]

Bring on the video.

[Humble]

Here's the video on vimeo, seems like everytime I upload a video to youtube the aduio is out of sync :P

http://vimeo.com/23740404

As far as the rear fenders go, I haven't been able to go fast enough to detect a difference yet. There might be something to be said for drag reduction which should help the 0-60 but it's so violently quick doing that I can't tell if there's a difference or not. 70+ you might see some improvement from drag reduction as well.

[Wally]

Great driving! engine sounds very responsive. Looks like you guys had fun!

[Humble]

Since the Brutes & Beautes event I added a couple clicks to the rear shocks and I think they're about right now at 14/16 stiff. The rear stayed put well enough but more importantly I didn't have tons of weight transfer when getting on the throttle. This event was another one that was between gears for me and I'm starting to think many autoxes will end up that way. I'm really happy with the pro synchros in the tranny now, I would never have been able to fly between 1st and 2nd like this on stock synchros!

Also, I finally figured out the audio problems on youtube... it seems youtube can't handle variable bitrate video or audio and either one messes up playback

http://www.youtube.com/watch?v=9FxWIC6jfPI

[Humble]

Finally found some pics for the Duel at DeAnza event

[Wally]

Great pictures!
Much less roll then before so it seems, looks well planted!

[Humble]

Finished up another race weekend! Did a little tweaking on the car saturday and took it on a long drive. I haven't had a chance to go through the logs yet but I noticed a weird behavior. On high boost shifts from 2-3 and 3-4 the wastegate and blow off valve seemed to get caught in a harmonic cycling fit, which prevented spool. If I slammed the throttle shut, waited half a sec or so then opened it up again it would be fine. I'm not sure what would cause this and it doesn't happen all the time. I adjusted my bottom end off boost timing which has really helped my initial throttle response and low end pick up.

After topping off with 100 octane I headed down to the autox in Marina for a double points fathers day event. The car was pretty squirelly under boost and turned the rear tires into smoke at full boost :P Here's my fastest run of the day which was good for 2nd in class and top 5% overall, not too shabby! As you can see, there was still room for improvement :P

http://www.youtube.com/watch?v=GX0RxM4AEPc

[70Turbobug]

On high boost shifts from 2-3 and 3-4 the wastegate and blow off valve seemed to get caught in a harmonic cycling fit, which prevented spool. If I slammed the throttle shut, waited half a sec or so then opened it up again it would be fine.

Sounds to me like your wastegate spring is too weak or sticks? Maybe a problem with one of the "sense lines" vacuum/boost lines? Great video and very quick congratulations!

[NO_H2O]

Nice work. Thanks for the video.

[Humble]

Still haven't worked out the weirdness with the wastegate spring but I have a manual boost controller on the way to see if it helps any.

I also lucked out and happened to find a stellar deal but had to postpone paying off the credit card in return. Came across a set of good condition Fikse FM5 classics with hoosier r6 rubber for $900! The wheels are in great shape but the rubber is probably done for. It's a set of 17x9.5 et23 front and 17x10.5 et15 rear, and a quick test fit determined they are a perfect fit! These wheels and tires are also much, much lighter than the 18's with A048s.

[Wally]

Cool! they even look good
Very curieus: what do the weigh with tires?
Pls also weigh them when you remove/renew the tires.

[Humble]

So I got weights today and with a little guess work we can find the weight of the rims. This is per wheel...

Current setup: BSA 215A
BSA 18x8 & Yokohama A048 235/40-18 = 45lbs
Tire = 25lbs. / Rim = 20lbs

BSA 18x10 & Yokohama A048 285/30-18 = 51lbs.
Tire = 27lbs. / Rim = 24lbs.

New setup: Fikse FM/5
Fikse 17x9.5 & Hoosier R6 245/40-17 = 39lbs.
Tire = 22lbs. / Rim = 17lbs.

Fikse 17.10.5 & Hoosier R6 275/40-17 = 42lbs.
Tire = 23lbs. / Rim = 19lbs.

[Wally]

That is a significant gain for sure! Some will come from the reduction in wheel diameter, but still.
I was gonna make a smart @ss remark about fitting a 17" tire around an 18"wheel, but lets say, I know what you intended to write ;-)