Don, looks like you need to work on the weight transfer. The car is running way to low in the front going down the track, I.E. no weight on the rear tires.... Traction problems you speak of, not the need for a wing.
What was all the smoke at the end of the track?
They're MT 29.5x10.5-15W stiff sidewall slicks.Very nice Don. I would agree though with S2V6Racer on the weight transfer. You running slicks or radials
Believe it or not, the car is leaving the line with 1 to 1.5 psi boost and the nitrous. Just before the 60 foot mark, the nitrous shuts down with 170-180 kPa boost pressure built up by that point.
The nitrous is activated one second before the transbrake releases. A perfect amount of time to properly work a sportsman tree.
The car leaves the line as a true nitrous car and transitions to a true turbo car by the 60 foot mark.
Your not hitting the suspension nearly hard enough IMO off the line.
You need to hit the tires harder and bring ithe boost in almost fully before you even reach the 60 ft mark.
A lower axle ratio would be nice to increase torque for the launch, get me into second gear sooner so that I can ramp up the boost sooner, but the lower axle ratio would greatly limit me on the top end of a 1/4 mile charge with the size tire I'm running. My redline being 7800 rpm.
The best solution, I believe, is to run a wide ratio gearset in the THM400. I've been eye balling the 2.98 gearset by Coan. Anyone hear any news on that gearset?
The lower gearset would increase torque off the line, allow the rpm to ramp up quicker and sooner. Boost being tied to the rpm rise, the map would ramp up quicker and the 1-2 shift would come sooner. I have to level off the boost to 14 psi for the 1-2 shift, so the sooner I get through that shift, the sooner I can allow boost to ramp up to full limit. ETs and mphs will improve. I imagine it would be worth close to a tenth at the 60 foot. That would be around a 1.30 60 foot. The car likes that 60 foot.
Yes, I see your point and I've been weighing the same thing, and you're absolutely right. The type of launch I'm getting now is a perfect sportsman tree bracket racing launch.It will be more inconsistent (traction) than anything you could possibly imagine going this route.
Just my opinion.
I will be running the 10.5w slick as well with a stiff wall in Sept. Hitting the tire hard is needed for sure, but good job non the less in making this work sportsman style . We are going to leave with more boost this year, given the fact we will not be running Radials. Im looking to leave at 13-15#'s minimum with a 3.50 gear.
The rpm after I finish staging is 3150 rpm at WOT. Timing is 32.Donnie, What kind of rpm , boost , timing numbers do have on the brake , at the hit and the ramp up to 1 second?? At the 60' mark what is your boost and timing and rpm?? Im just curious it may compare to mine. Mike
Make sure you share a video of it. Sounds like a fun ride.