Been playing with the datalogging from the Abingdon sprint at the weekend. So on cold tyres on old concrete therefore not the best surface plus me
trying not to break driveshafts these are the best numbers.
0-100mph is done in just over 200metres. Maximum of 0.95G under acceleration. 2 gear changes of .7secs each. With warm tyres and better surface I
think it would be in the 7secs mark to 100. The limiting factor now is the speed of the gearchanges (H pattern synchro box) and I'm getting
beaten by cars with sequential changes with WOT shift. I reckon that a sequential box would have saved .8-1.0 secs to 100.
0-100metres was 5.66dsecs at 74.7mph
0-200m was 8.25secs at 99.2mph
Looks like traction off the line is an issue if 0-60 is 4.6s with 531 bhp/ton?
FYI a car with the same spec as mine (M3 engined 7, about 435 bhp/ton with racelogic launch control and full-throttle shift electrickery) can do 0-60
in 3.5 on a poor surface, and 0-100 in 7.5 - we thought there was probably room for a little improvement there as well. So maybe some electronic
gizmos / better tyres could give worthwhile improvements?
I've already broken the BGH E8 box once and I got told off for 'beating the baulk rings' during changes so I try not to be
'too' quick with it (cost a fair bit to fix last time). I really need a 60G Quaife or something similar with WOT changes to go faster I
think.
quote:Originally posted by rodgling
Looks like traction off the line is an issue if 0-60 is 4.6s with 531 bhp/ton?
FYI a car with the same spec as mine (M3 engined 7, about 435 bhp/ton with racelogic launch control and full-throttle shift electrickery) can do 0-60
in 3.5 on a poor surface, and 0-100 in 7.5 - we thought there was probably room for a little improvement there as well. So maybe some electronic
gizmos / better tyres could give worthwhile improvements?
As I said, sprinting is on cold tyres (Avon ZZR A24 compound) so this is one of the limiting factors. It wasn't a perfect run either and, as
you say, some form of Launch and WOT changes would easily cut the time. Just interesting as we rarely get a sprint course which has a dead straight
start which allows you to get to 100MPH before braking. Remember I'm on an English axle with stock half shafts as well..
2lt Zetec, head/cams/rods/pistons, Rotrex Supercharger/Jenveys/Omex, 300BHP/260ft lb at the wheels. Car is a Phoenix with a BGH Type 9 (E8), live
English Axle with Quaife ATB on 3.54 ratio. Tyres are Avon ZZR A24 compound 185 13 front and 215 13 rear.
Car weighs 620Kg with some fuel but no driver....so 720Kg with me in it.
