60-130 in Cooler weather

[SolarFlare]

I don’t really pay much attention to the draggy’s DA calculation. I look up my area on airdensityonline.com

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[SolarFlare]

67* day, 56% humidity, +500 DA. 3rd gear 6r80 starting from about 55mph

 

[SolarFlare]

Vid

 

[Autopart101]

71* day, 51% humidity, +750ft DA. 3rd gear 6r80 starting from about 55mph

Your under sea level? Nice run. What Whp are you making.

 

[SolarFlare]

Your under sea level? Nice run. What Whp are you making.

exactly why I don’t like their calculations. I think most of my area is 10-15ft above sea level. Last time on the dyno was low low 800s

edited the weather data. I had looking at wrong line. 67* and 56% humidity +500ft

 

[Autopart101]

Anyone have any info on 60-130 gains using front runners?

exactly why I don’t their calculations. I think most of my area is 10-15ft above sea level. Last time on the dyno was low low 800s

edited the weather data. I had looking at wrong line. 67* and 56% humidity +500ft

Your making steam for low 800s.

 

[SolarFlare]

I’ve never tested regular tires vs front runners. Honestly most front runner combos aren’t really that light

 

[Angrey]

I don’t really pay much attention to the draggy’s DA calculation. I look up my area on airdensityonline.com

Does it tend to be off quite a bit? Is it always in one direction or is it random?

 

[SolarFlare]

Does it tend to be off quite a bit? Is it always in one direction or is it random?

random numbers. If im gonna use a data point id like it to be precise. More than anything air density online gives you more important things than temperature. Humidity and water grains are way more important than plain ambient temp.

 

[Autopart101]

random numbers. If im gonna use a data point id like it to be precise. More than anything air density online gives you more important things than temperature. Humidity and water grains are way more important than plain ambient temp.

I made that argument some time back. Water grains and humidity take the place of oxygen. I'm from the Airline world. They hamper the preformance of piston engines greatly. Dragy doesn't take that into acount.

 

[furdfan2018]

67* day, 56% humidity, +500 DA. 3rd gear 6r80 starting from about 55mph

Your car is fookin sorted out dude. Got damn. Impressive!!

 

[Angrey]

I made that argument some time back. Water grains and humidity take the place of oxygen. I'm from the Airline world. They hamper the preformance of piston engines greatly. Dragy doesn't take that into acount.

Why wouldn't we just use the actual oxygen content per volume? (i.e. oxygen density)? So whether it's displaced by gaseous water or reduced by temperature or increased by pressure, the ultimate end goal is to evaluate how much O2 the motor is taking in with every liter/cubic foot.

Curious why there's not an O2 density metric commonly used rather than an air density (which doesn't account for moisture content). There's likely a reason. Would be curious to know.

 

[SolarFlare]

Your car is fookin sorted out dude. Got damn. Impressive!!

thank you.

 

[Platinum_5.0]

Best 60-130 and pass to date. 4200lbs, 15psi Whipple, 2200ft and 3600DA. Running the Gen 6 blower this year and going to 18psi.

 

[Autopart101]

This is an interesting YouTube video. Got this from over on FB Dragy page. Formula for calculating WHP from 60-130 time. The formula for me shows 840whp for 4100lbs and a 5.29 60-130.

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