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We have a customer that put his C5 on a pretty intense diet. Theres still several pounds left to remove, but this is a pretty decent start. The only "light weight" part on the car is the 1 piece carbon hood and the shorai battery. Everything else has simply been removed.
2014 NASA Texas TT1 Champion
2015 NASA Texas ST1 Champion
2018 NASA TTU & TT3 National Champions
2019 NASA ST2 National Champion
2019 NASA Texas TT2 Champion
2020 SCCA Majors COTA GT2 pole sitter
2020 SCCA Trans Am Road Atlanta SGT Winner
2022 NASA National Champion ST2
2023 NASA National Champion ST2
2023 NASA National Champion TT2
David, Louis are you guys running at that weight or ballasting up for TT3/4? You would have to take a lot of power out otherwise. When you ballast up though you can put it where you want and where it will be most beneficial.
David, Louis are you guys running at that weight or ballasting up for TT3/4? You would have to take a lot of power out otherwise. When you ballast up though you can put it where you want and where it will be most beneficial.
it depends on the class. This car has very little rear weight, but we only have to manage 250ish Rwhp. We plan to test both weights and power levels. We aim to be as light as possible, and then detune power to that weight.
the hard part is that to get this car on a 275 in TT4, you have to weigh 3100. The advantage is that now we can place the weight advantageously, and have a better car with a lower Center of gravity, and less pendulum.
right now, full fuel, and driver, we’re roughly 2900lbs.
it depends on the class. This car has very little rear weight, but we only have to manage 250ish Rwhp. We plan to test both weights and power levels. We aim to be as light as possible, and then detune power to that weight.
the hard part is that to get this car on a 275 in TT4, you have to weigh 3100. The advantage is that now we can place the weight advantageously, and have a better car with a lower Center of gravity, and less pendulum.
right now, full fuel, and driver, we’re roughly 2900lbs.
Can you go down on tire with a lower weight? Since it's no cage, I assume this is time trial, not wheel to wheel, and you don't need the tires to last that long, so you can run smaller. Bonus is that they're also lighter, the wheels are lighter, etc. etc. etc.
What is the brown mat under the lift? Did you pour a setup plate to do alignments?
yes, 1” self leveling epoxy.
Originally Posted by mattastick
Can you go down on tire with a lower weight? Since it's no cage, I assume this is time trial, not wheel to wheel, and you don't need the tires to last that long, so you can run smaller. Bonus is that they're also lighter, the wheels are lighter, etc. etc. etc.
the tough part is NASAs new tire width rules that are really hard to test and understand. In addition The 275/35/18 is 25.5 tall, while the 245/40/17 is 24.5” tall. If we use the Hoosier, The 245 actually measures as a 275. We would need to run a 215-225, in order to meet the rules.
we have some 245 scrubs to test, but no wheels yet. Certainly a test, but something we have yet to do.
I agree with Olitho. Once this car is safe to race with a full cage etc, you will be more 2900 range without driver. Those last pounds are hard to find!
I agree with Olitho. Once this car is safe to race with a full cage etc, you will be more 2900 range without driver. Those last pounds are hard to find!
I agree! We will document it all. We have built cars as light as 2600lbs endurance ready with no driver no fuel in the past, just Depends on how much money we want to spend. Carbon bodywork is a large gain, and cost.
Is the setup epoxy plate something you did yourself? Can you post about how you did that and with what materials? I'm so tired of getting a flat floor with flooring tiles.
Is the setup epoxy plate something you did yourself? Can you post about how you did that and with what materials? I'm so tired of getting a flat floor with flooring tiles.
let me see see if I can find any info. It’s about 12 years old at this point, but has held up well. Had a C5 trans leak on the pad turning it pink, lol, and some knuckleheads welded on it melting it slightly; but not bad otherwise!
I agree! We will document it all. We have built cars as light as 2600lbs endurance ready with no driver no fuel in the past, just Depends on how much money we want to spend. Carbon bodywork is a large gain, and cost.
How much will a carbon body save you? Is there any keybareas to target?
03-22-2018, 07:21 PM
Light weight C5Z
