8.50 index build

Todd Geisler · 10-23-2021, 09:01 AM

At this point the car was mostly complete so I wanted to weigh the car to see where the weight might be and to see if the weight bias worked out as planned.

The class I run doesn't get radial prep, but I've raced on a radial for nearly 27 years. So I put myself at a bit of a disadvantage being on the radial. Knowing this I can't run the front end as nose heavy as a heads up car on fly paper prep, so I was shooting to be about 54% on the nose which I knew was gonna be a challenge with an iron block BBC under the hood. For this reason I moved the main hoop back which moved my driving position back, and used all carbon fiber body parts in the front. Will also have a carbon roof skin.

I am keeping the stock rear hatch and glass as well as keeping stock steel doors with factory glass and power windows.

I then stacked everything in the car to simulate race weight.

And this is the result, with and without driver. Ignor the corner weights being jacked up as my floor isn't perfectly flat and I use scale leveling pads when scaling the car to setup the suspension.

It wound up a little heavier than expected, but given the stock doors and hatch, plus I built the back half heavier with 1 1/2 x .065 for weight in the rear, it's not a huge surprise its a little heavy. But for my class, we have a 2800 lb minimum weight, so I'm still gonna have to add 150-200 lbs ballast to be race ready.

10-23-2021, 09:01 AM	#27
Todd Geisler Member Join Date: Feb 2002 Posts: 328 Likes: 64 Liked 345 Times in 149 Posts	Re: 8.50 index build At this point the car was mostly complete so I wanted to weigh the car to see where the weight might be and to see if the weight bias worked out as planned. The class I run doesn't get radial prep, but I've raced on a radial for nearly 27 years. So I put myself at a bit of a disadvantage being on the radial. Knowing this I can't run the front end as nose heavy as a heads up car on fly paper prep, so I was shooting to be about 54% on the nose which I knew was gonna be a challenge with an iron block BBC under the hood. For this reason I moved the main hoop back which moved my driving position back, and used all carbon fiber body parts in the front. Will also have a carbon roof skin. I am keeping the stock rear hatch and glass as well as keeping stock steel doors with factory glass and power windows. I then stacked everything in the car to simulate race weight. And this is the result, with and without driver. Ignor the corner weights being jacked up as my floor isn't perfectly flat and I use scale leveling pads when scaling the car to setup the suspension. It wound up a little heavier than expected, but given the stock doors and hatch, plus I built the back half heavier with 1 1/2 x .065 for weight in the rear, it's not a huge surprise its a little heavy. But for my class, we have a 2800 lb minimum weight, so I'm still gonna have to add 150-200 lbs ballast to be race ready.