Does the car have tens in her?
TECH Apprentice
Joined: Oct 2015
Posts: 353
Likes: 21
You can't hit a radial too hard or you will have problems. If you were able to dead hook a 6500 launch, sounds like your clutch was just soft enough to make it work. If you soften up the hit of your clutch a little more, you can likely get 1.4x 60's out of those radials. The softer hit will keep the radials stuck without pulling your engine rpm down too far, which effectively raises your engine's average rpm, allowing it to produce power at a quicker rate. Too soft of a hit is counter productive, but there's a sweet spot in between where things work amazingly well.
Here's a simplified example to help explain why you want to keep average rpm as high as practically possible-
Lets say a car has the power to gain speed at an average rate of 6000 rpm per second in 1st gear. Let's also have the clutch slip until .5 sec into the run with the tires remaining dead hooked. If it is launched at 6k, tires are stuck, and the clutch locks up by .5 sec, engine rpm is going to get pulled down to 3k at the .5 sec mark. Then from .5 to 1.0 seconds rpm will climb from 3k back up to 6k, as the engine regains the lost rpm. What all this boils down to is that during the initial 1 second after launch, the engine's average rpm was 4500 rpm, which means the engine made 75 revolutions over that 1st second of the run.
...Now suppose that same car launches at 6k, but the clutch slips just enough that the engine does not lose any rpm over that same 1 sec period. Now the engine's average rpm was 6000, which means it made 100 revolutions during that initial 1 second period.
...Here's the thing- both left from the same rpm, but the launch that didn't lose any rpm actually packs 33% more revolutions of WOT power production into the same 1 second time period.
I sell a device that makes dialing in that sweet spot much easier, but when you understand the underlying problem you can likely make things come together on your own.
Here's a simplified example to help explain why you want to keep average rpm as high as practically possible-
Lets say a car has the power to gain speed at an average rate of 6000 rpm per second in 1st gear. Let's also have the clutch slip until .5 sec into the run with the tires remaining dead hooked. If it is launched at 6k, tires are stuck, and the clutch locks up by .5 sec, engine rpm is going to get pulled down to 3k at the .5 sec mark. Then from .5 to 1.0 seconds rpm will climb from 3k back up to 6k, as the engine regains the lost rpm. What all this boils down to is that during the initial 1 second after launch, the engine's average rpm was 4500 rpm, which means the engine made 75 revolutions over that 1st second of the run.
...Now suppose that same car launches at 6k, but the clutch slips just enough that the engine does not lose any rpm over that same 1 sec period. Now the engine's average rpm was 6000, which means it made 100 revolutions during that initial 1 second period.
...Here's the thing- both left from the same rpm, but the launch that didn't lose any rpm actually packs 33% more revolutions of WOT power production into the same 1 second time period.
I sell a device that makes dialing in that sweet spot much easier, but when you understand the underlying problem you can likely make things come together on your own.
Thread Starter
On The Tree
Joined: Apr 2005
Posts: 141
Likes: 1
From: Michigan
