|
||||||||||
|
||||||||||
2 Mar 2004, 09:42 (Ref:891043) | #1 | ||
Racer
Join Date: Feb 2004
Posts: 146
|
Start timing-64 ft
In sprints and hillclimbs we have a split timing 64 feet from start line .We break the beam off the start line and again at 64 feet,most of us in around 1.9 to 2.2 secs, but how does this relate to 0-60 mph and G force,or doesn't it?
I remember 32ft/sec squared as gravity so does the 64 ft have some relevance? Lister |
||
__________________
Rattie,on the road with Mole.Beep,beep! |
2 Mar 2004, 09:50 (Ref:891051) | #2 | ||
Rookie
Join Date: Oct 2003
Posts: 35
|
As I understand it 64ft in 2 secs is 32ft per sec which means we reach 1G accelerating off the line
|
||
|
2 Mar 2004, 19:56 (Ref:891624) | #3 | ||
Veteran
Join Date: Oct 2002
Posts: 1,618
|
should be right so basically its a function of 2secs / time which gives you your g's unless im mistaken, not sure it would directly relate to 0-60 as it would only give you an instantaneous sped but you can take the curve and put a prediction to 60 on it
|
||
__________________
I refuse to let fact get in the way of my opinion |
2 Mar 2004, 22:39 (Ref:891837) | #4 | ||
Racer
Join Date: Feb 2004
Posts: 146
|
Thanks,
G makes sense. On reflection I agree that the 0-60 is not really relevant. If one looks at drag cars 0-300 in 5 secs and probably still quite a percentage of that to get going? Lister |
||
__________________
Rattie,on the road with Mole.Beep,beep! |
3 Mar 2004, 07:10 (Ref:892074) | #5 | ||
Veteran
Join Date: Jul 2002
Posts: 1,994
|
And all this in metric is??? Sorry but that is what easy to figure out!!!!
|
||
__________________
Succes is a result of judgment,that is inturn a result of experience that has come from instances of bad judgment. "Montoya made some last minute changes to his suspension but it seemed to effect it's handling"-Classic |
3 Mar 2004, 07:17 (Ref:892080) | #6 | ||
Veteran
Join Date: Jul 2002
Posts: 1,994
|
So 19.5 meters in 2 seconds = 9.75 meters/ second so yes that should be 1 G,however that would be the "average G's for the run not the maximum.You should start off with a high initial G and then taper off as your speed increases and the acceleration decreases but this is starting to get into differenciation and I can neither spell it correctly or confidently come up with the correct formula to plot the curve.
|
||
|
3 Mar 2004, 23:15 (Ref:892947) | #7 | |
Racer
Join Date: Jan 2004
Posts: 410
|
Throws up some interesting figures sometimes. I often took as much as 0.3 sec off the class competition in 64ft bcause I had less power and could get away with a conventional clutch rather than a paddle clutch (that offered less control). Obviously I then lost it all and more down the course!
|
|
|
12 Mar 2004, 22:05 (Ref:903815) | #8 | ||
Racer
Join Date: Jul 2003
Posts: 227
|
That is interesting, in Drag Racing, there is a 60 foot time that is given to you as part of your timeslip. The really hooked up production cars generate times in the 1.5-1.7 second range, the average showroom stock car 2.0-2.2 seconds. Robert
|
||
__________________
But, this one goes to eleven |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
V8 Timing | cow | Australasian Touring Cars. | 68 | 6 Oct 2006 06:41 |
GP Timing? | Lotusonpole | Formula One | 2 | 11 Sep 2004 13:21 |
MST Timing | Steve Higgs | Racers Forum | 9 | 15 Aug 2002 20:41 |
mst timing..... | gomick | Touring Car Racing | 1 | 13 Aug 2001 18:49 |