Brazilian Racing.....

[bracketracer]

Hey Jeff!!!!!!! A couple of things and maybe Mike will chime in on this ..
Trying to reduce tire spin on launch.
I do see a lot of chassis movement in the rear. If you try to reduce that and try to keep it to a 1/2 or less it will keep the tire more "round" if you catch my drift Longer bars is possible what you need..On another note I think if you try to keep the front end down more to keep less air from going under the car it's going to go faster for sure...

I have a strange strut front end...

[Jeff 4100]

try to reduce that and try to keep it to a 1/2 or less

Stiffening the rear shocks or trying a stiffer spring??
About the shocks, we tested a lot of set ups and the body's movement and tire slipping never changed as well... My idea still is to use 125lbs on the rear springs...now it's 150lbs...What do you think?

My conclusion is about the Ladder Bar lenght...it's lifting the rear of the car...based on the engine power, the car should have the wheels up easily...but it does not happen.



About the front suspension, it's a study that I'm doing for a new Project I'm planning to do...I was looking for new tools and I got curious about the Bump Steer on Drag race cars...I'm sure it's really important on circuit cars, but I don't know if you pay close attention to it.

[bracketracer]

The bump steer is real important on Drag car...Think of it this way. Take a street car and if you could move the front suspension it's full travel it will toe in and out a lot....Now think it you had that same car going down the track say 125 MPH and hit the brakes hard and the nose of the car goes down ....

I need to look at more of the vids...I'll be back later

[Jeff 4100]

Now think it you had that same car going down the track say 125 MPH and hit the brakes hard and the nose of the car goes down ....

It sounds like a Sinatra's song...

I need to look at more of the vids...I'll be back later

Please, compare all the vids with the 8's video!

[bracketracer]

Jeff you need to get some better vid and watch the tire closer then slow it down.. you can do that here..
http://sourceforge.net/projects/virtual ... p/download

[Jeff 4100]

Jeff you need to get some better vid and watch the tire closer then slow it down.. you can do that here..
http://sourceforge.net/projects/virtual ... p/download

Tell me your impression about it...

[Jeff 4100]

Jeff you need to get some better vid and watch the tire closer then slow it down.. you can do that here..
http://sourceforge.net/projects/virtual ... p/download

Hey Dude, how's going??

In February I did the Dave's Seminar...
Next week I'll be there to go to SEMA...but now I received an invitation to go to the Jerry Bickel Race Car Performance Class...

What did you already hear about it?? Do you feel that $1250 will be well invested on it??

Thanks

[Jeff 4100]

Hello Dragstuff Friends!!!

Take a look at the pics of our Dodge Polara Project on the Brazilian Drag Race Festival last weekend.
Thanks Dave Morgan by the greatest tips on the Chassis Seminar in Scranton...

Enjoy it!!!

Thanks,
Jeff

[Jeff 4100]

Hello All,

That's a 91 Chevy Chevette that we are building a 3/4 chassis...that's for the Turbo Class, 2.0 liter 16 valve, 4 cylinders, fuel injected...the rulebook says to use Drag Dot Radial tires, Ladder bar suspension (4 link is prohibited), Dana 50 rear end and manual transmission.

Take a look at the pics...I hope to be here everynight again to update the next steps...

Enjoy it!!

Thanks,

[Jeff 4100]

...more pics...

[Jeff 4100]

...more pics...

[Jeff 4100]

Guys, after a long time out the forum...we got the Chevette's Project finished...

Car is ready and showed on our display on the Brazilian Drag Racing Festival a couple weekends ago.

[Jeff 4100]

Short movie of our cars...

http://www.youtube.com/watch?v=LA0MMUcR4F0

[Jeff 4100]

more pics