Teammate Bob B. does more testing on launch control & 0-60 MPH
- Thread starter teamzr1
- Start date
teamzr1
Supporting vendor
Update 5/14/23
I have been working with Bob on this but including how a vehicle performs as to the effects of weather and elevation
He was getting 0-60 MPH times of 3.2 seconds but as of today down to flat 3 seconds
WE did that by calculating the corrected Density, which affects how the engine performs
Bob getting 3.2 seconds if we look for the Corrected D/A we see that the time he did those 0-60 MPH runs
even though he lives at about 500 feet elevation, the weather made it as he was at 2,295 feet
This reduced HP by 30
Now he waited, and we looked at the hourly weather numbers and say for today that at 7 AM and the corrected D/A was only 600 feet and engine only lost 8 HP and thus 0–60 time 6% quicker of 3 seconds
Now what we want is good weather where the corrected D/A has a minus elevation but will not be easy as he lives in Florida
I have been working with Bob on this but including how a vehicle performs as to the effects of weather and elevation
He was getting 0-60 MPH times of 3.2 seconds but as of today down to flat 3 seconds
WE did that by calculating the corrected Density, which affects how the engine performs
Bob getting 3.2 seconds if we look for the Corrected D/A we see that the time he did those 0-60 MPH runs
even though he lives at about 500 feet elevation, the weather made it as he was at 2,295 feet
This reduced HP by 30
Now he waited, and we looked at the hourly weather numbers and say for today that at 7 AM and the corrected D/A was only 600 feet and engine only lost 8 HP and thus 0–60 time 6% quicker of 3 seconds
Now what we want is good weather where the corrected D/A has a minus elevation but will not be easy as he lives in Florida
teamzr1
Supporting vendor
Bob ran some more 0-60 MPH tests, looking for a better day when the D/A is not so high
Tests he did yesterday, the corrected D/A was better than the last 2 times but still high
But we see he started with 3.5 sec 0-60 MPH and now down to a flat 3 secs, so good correct D/A would really help
It does not help to do this with those heavy run flat tires with no flex in the side walls
I asked him on next tests, instead of using launch control that launches at 3,400 RPM
is to turn LC off and instead brake torque and see how that does.
I think if he could get better weather, which is hard to do in the heat of Florida, should get down to like a 2.7 0-60 MPH
Tests he did yesterday, the corrected D/A was better than the last 2 times but still high
But we see he started with 3.5 sec 0-60 MPH and now down to a flat 3 secs, so good correct D/A would really help
It does not help to do this with those heavy run flat tires with no flex in the side walls
I asked him on next tests, instead of using launch control that launches at 3,400 RPM
is to turn LC off and instead brake torque and see how that does.
I think if he could get better weather, which is hard to do in the heat of Florida, should get down to like a 2.7 0-60 MPH
teamzr1
Supporting vendor
Not sure how any different from the launch control function that sets RPM to 3,500 RPMs
Brake Torque would just allow to use higher RPMs to torque up the drivetrain and overcome those
heavy run flat tires and this is done for less than 1 minute
Brake torquing has been used for both auto and manual trannys
Brake Torque would just allow to use higher RPMs to torque up the drivetrain and overcome those
heavy run flat tires and this is done for less than 1 minute
Brake torquing has been used for both auto and manual trannys
teamzr1
Supporting vendor
GM says brake torque method is fine :
From: Harlan Charles <harlan.w.charles@chevrolet.com>
Sent: Monday, May 22, 2023 8:49 AM
To: Bob Baker <427racing@outlook.com>
Subject: RE: Hi Harlan I have a C8 launch question for ya
Totally recommend using the launch control, or you can manually launch using the double paddles to de-clutch.
From: Harlan Charles <harlan.w.charles@chevrolet.com>
Sent: Monday, May 22, 2023 8:49 AM
To: Bob Baker <427racing@outlook.com>
Subject: RE: Hi Harlan I have a C8 launch question for ya
Totally recommend using the launch control, or you can manually launch using the double paddles to de-clutch.