My regular driver - Autocross - Roadrace Monza

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Re: My regular driver - Autocross - Roadrace Monza

Postby rpoz-29 » Sat Sep 27, 2008 8:09 am

I've re-read the previous posts, and didn't see any mention of a sway bar change. Have you changed them? Larger bars will help quite a bit. I had a 1 1/16" front bar on my Vega, and the stock rear bar. Not the perfect set-up, but the only bar swap I could make and stay in stock. I still had body roll, but I was on stock springs. Your Koni's are single adjustables aren't they? I never heard of a double adjustable Koni for an "H" body, but they may have. I would opt for sway bars if you don't already have them, but the car still looks pretty good to me.
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Re: My regular driver - Autocross - Roadrace Monza

Postby cjbiagi » Sat Sep 27, 2008 8:46 am

Great pics, it does demonstrate the cars attitiude in extreme conditions. Keep us posted with any updates.
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Re: My regular driver - Autocross - Roadrace Monza

Postby Monzsta » Sat Sep 27, 2008 1:02 pm

Awesome pics. It looks as you could benefit from my latest mod. I'm working on installing spindles with a taller upper ball joint location for that needed camber gain. I bet it would improve your front grip immensely.

http://forums.h-body.org/viewtopic.php?f=10&t=24951
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Re: My regular driver - Autocross - Roadrace Monza

Postby tinsfci » Mon Sep 29, 2008 4:02 pm

rpoz-29 wrote:I've re-read the previous posts, and didn't see any mention of a sway bar change. Have you changed them? Larger bars will help quite a bit. I had a 1 1/16" front bar on my Vega, and the stock rear bar. Not the perfect set-up, but the only bar swap I could make and stay in stock. I still had body roll, but I was on stock springs. Your Koni's are single adjustables aren't they? I never heard of a double adjustable Koni for an "H" body, but they may have. I would opt for sway bars if you don't already have them, but the car still looks pretty good to me.

You´re right, I havent changed the swaybars, they´re stock. Bigger swaybars is on of the items on my whishlist. As I said earlier, the only suspension modifications on these pics are the Koni shocks, 80-series. Yes they are single adjustable=you can stiffen the rebound damping (extension damping).

/Per
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Re: My regular driver - Autocross - Roadrace Monza

Postby tinsfci » Mon Sep 29, 2008 4:06 pm

cjbiagi wrote:Great pics, it does demonstrate the cars attitiude in extreme conditions. Keep us posted with any updates.

I will! So much fun to do on the car, so little time... Anyone recognize this phenomenon? :)
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Re: My regular driver - Autocross - Roadrace Monza

Postby gerbsinmd » Mon Sep 29, 2008 5:31 pm

tinsfci wrote:I will! So much fun to do on the car, so little time... Anyone recognize this phenomenon? :)



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Re: My regular driver - Autocross - Roadrace Monza

Postby tinsfci » Mon Sep 29, 2008 6:03 pm

Monzsta wrote:Awesome pics. It looks as you could benefit from my latest mod. I'm working on installing spindles with a taller upper ball joint location for that needed camber gain. I bet it would improve your front grip immensely.
http://forums.h-body.org/viewtopic.php?f=10&t=24951

Yes, I have read your post with much interest! Like cjbiagi told me, keep us posted with any updates :)

As a matter of fact, before I tested AutoX and RoadRacing, I didn´t really think that much about what makes a vehichle handle well, especially round corners. I was quite aware what camber, caster and toe-in meant, and thought like "Well, thats all you need to know". Sort of.

How wrong I was. :lol:

For about one year ago, I bought the book "Chassis Engineering" by Herb Adams:
http://www.amazon.com/Chassis-Engineering-HP1055-Herb-Adams/dp/1557880557/
I think this is a good book which explains the principles of suspension geometry and chassis design in a good, easy way. For a newbie like myself.
I know, there is tons of litterature out there, this was the one I bought.

It takes time (at least for me!) to absorb all this, but I think it´s fun. After all, it´s all about physics.

Roll angle, roll force distrubution, traction vs. load, circle of traction, offset, King Pin Inclination, Scrub radius, Camber gain, roll center, bump steer... :shock: Now, which was what? I have to dig into the book again... :wink:
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Re: My regular driver - Autocross - Roadrace Monza

Postby NixVegaGT » Mon Sep 29, 2008 7:36 pm

I also cut 1 coil from the front. How much did the ride height change? I was thinking of 1 whole coil from the rear as well.
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Re: My regular driver - Autocross - Roadrace Monza

Postby tinsfci » Tue Sep 30, 2008 12:43 pm

Sorry to say, I never measured the ride height before swapping springs :(

The reason why is that the job I was actually doing was to swap the brakesystem from my stock 1975 to a 1976 system.
When I had the CA:s apart, I got the idea to put my already shortened springs from my white Monza into the red one.
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Re: My regular driver - Autocross - Roadrace Monza

Postby tinsfci » Fri Oct 03, 2008 10:37 am

Here is a picture before the spring cut:
before_spring_cut_s.jpg
before_spring_cut_s.jpg (79.21 KiB) Viewed 1344 times
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Re: My regular driver - Autocross - Roadrace Monza

Postby bill1978v8 » Sun Oct 05, 2008 10:53 pm

Your car looks like mine?Except it handles!
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Re: My regular driver - Autocross - Roadrace Monza

Postby NixVegaGT » Tue Oct 07, 2008 11:49 am

Thanks man! For the sake of comparison here's the pic from the first page:

Image
- Nic '73 Vega GT "DogBoxx" Batwing LS1
http://www.cardomain.com/ride/2357894
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Re: My regular driver - Autocross - Roadrace Monza

Postby bill1978v8 » Tue Feb 24, 2009 9:52 pm

What springs and shocks, swaybars are you running?

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Re: My regular driver - Autocross - Roadrace Monza

Postby ls1monza » Thu Sep 17, 2009 9:55 pm

I 100% agree with the previous asjustable front UCA comment.....Lots of camber comes after... :wink:
The rear IRS helps too!!
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Re: My regular driver - Autocross - Roadrace Monza

Postby tinsfci » Mon Oct 05, 2009 4:41 pm

Long time since I posted something...

I went to a track day about 3 weeks ago, that was fun! :D
Hmmm...take a look at the front wheel angles:
trackday1.jpg
trackday1.jpg (89.6 KiB) Viewed 1063 times
trackday2.jpg
trackday2.jpg (82.98 KiB) Viewed 1010 times


Wheel angles (!) again :shock:
trackday3.jpg
trackday3.jpg (89.1 KiB) Viewed 1010 times


I have about 2-3 degrees "static" negative camber for auto-x:ing, but that looks a lot more...due to my worn out control arm bushings?
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