Lateral acceleration numbers?

[Spyderman55]

We know the top speed, 0-60 and quarter mile times, but I’ve never seen the skid pad lateral acceleration number. The Spyder handles pretty well - I know it would give my Mustang GT a run for its money on a road course, but does anyone know what this number is?

 

[NautiBrit]

The only numbers that I've seen posted are 0.7G, which seems quite low considering the ability of the Spyder to corner well. The nanny may be the limiting factor.

 

[BajaRon]

The only numbers that I've seen posted are 0.7G, which seems quite low considering the ability of the Spyder to corner well. The nanny may be the limiting factor.

Like most vehicles, the lateral G ability of the Spyder is very dependant on the rider. If you put the stiffer swaybar on it will make a huge difference in this number over stock (IMO).

And it gets the Nanny off your back too (Fact).

 

[DannyS]

Another factor is the ability of the rider to hold on and not be thrown off. For max effect you would be up out of the seat and leaning into the turn. Weight of the rider would also have an effect. For normal driving I would like to see more of a bucket seat with a little side bolster it would not help on fast twisters but I think it would help for cruising where you can keep your seat. For a touring rider I think it would allow them to not get a tired as with all the bracing in the corners.

 

[2spyders]

G's

How do you find out what that number is? I'm taking Spydr2 on the race track again this weekend. Grumpy has a Beltronic Vector FX1 thingy that he uses in his car for 0-60, 1/4 miles and Gs. Would that do it?

 

[Spyderman55]

Calculating lateral acceleration

Pre-computer this was most commonly measured by timing how long it took to lap a 200' circle. I'm hoping the Spyder has a lateral acceleration around 0.85 (sports car range), but because of the Nanny, I have a feeling it will be in the 0.7x (low-end economy car range).

Lateral acceleration formula: 1.227 x radius / time^2 (^2 = squared)
Example: 200' diameter circle and a lap time of 12 seconds gives lateral acceleration of 0.85.

1.227 * 100 / 144 = 0.85

I have a simple spreadsheet that allows you to enter the diameter of your course and the lap time, which are used to compute the lateral acceleration number, but this site doesn't allow the attachment of an Excel spreadsheet.

 

[Questions]

If I am not mistaken Lamont, Has a iphone with the dynolicious program which measures 1/4 mile, 0-60, 60 foot, 1/8 mile, horsepower, and lateral G's.

I have the program on my ipod and used it at the track in my mustang and it was very accurate the ipod showed the same numbers as the track.

 

[2spyders]

Pre-computer this was most commonly measured by timing how long it took to lap a 200' circle. I'm hoping the Spyder has a lateral acceleration around 0.85 (sports car range), but because of the Nanny, I have a feeling it will be in the 0.7x (low-end economy car range).

Lateral acceleration formula: 1.227 x radius / time^2 (^2 = squared)
Example: 200' diameter circle and a lap time of 12 seconds gives lateral acceleration of 0.85.

1.227 * 100 / 144 = 0.85

I have a simple spreadsheet that allows you to enter the diameter of your course and the lap time, which are used to compute the lateral acceleration number, but this site doesn't allow the attachment of an Excel spreadsheet.

....zzzzzzzZOOMmmmm.....

(that's the sound of all that going right over my head - no offense intended)

 

[2spyders]

If I am not mistaken Lamont, Has a iphone with the dynolicious program which measures 1/4 mile, 0-60, 60 foot, 1/8 mile, horsepower, and lateral G's.

I have the program on my ipod and used it at the track in my mustang and it was very accurate the ipod showed the same numbers as the track.

However - I do have a new iphone hyea:, so if Grumpy won't let me use his beltronic, I'll have an plan B.

If I'm able to figure anything out by Sunday and try it on the track, I'll let you know the results.