Jump to content

need.... more.... traction...


slngsht

Recommended Posts

that's 4" wider than what I have.

 

 

 

Arya tells me the toyota 8" holds up fine on 500 horse buick GNX apps... maybe the 7.5" will be fine with my weak 440 horse on a light car http://www.usa7s.com/aspnetforum/images/emoticons/biggrin5.gif

 

 

 

what are the best WIDE 15" R compound tires around? I found some wide ones, but all are drag tires.

Link to comment
Share on other sites

Ben at Rocky Mountain Sports Cars told me that when he served an apprenticeship at Caterham in England, he was present when Caterham did a series of timed 0-100-0 runs in a Superlight 500 for a British magazine. He said that traction was such a problem that the car was tested with a passenger (him) and a full tank of gas, to try to get some weight down in the rear.

 

 

 

Tom Meacham

Link to comment
Share on other sites

Just to revisit the 0 - 60 performance thing. Found the following info in a thread on the Atom forum. This data comes from a test done by Car and Driver magazine that is in the March issue.

 

 

 

Lap times

 

Z06 2:01.00

 

Exige S 2:04.30

 

911 GT3 2:01.50

 

Atom 1:58.30

 

Noble M400 2:00.40

 

Brock Coupe 2:02.70

 

 

 

0-60

 

Z06 3.6

 

Exige S 4.1

 

911 GT3 3.8

 

Atom 3.0

 

Noble M400 3.3

 

Brock Coupe 3.7

 

 

 

0-100

 

Z06 8.3

 

Exige S 11.1

 

911 GT3 8.7

 

Atom 7.5

 

Noble M400 7.8

 

Brock Coupe 8.4

 

 

 

1/4 mile

 

Z06 11.8 @ 122

 

Exige S 12.8 @ 107

 

911 GT3 12.0 @ 118

 

Atom 11.5 @ 117

 

Noble M400 11.7 @ 120

 

Brock Coupe 11.9 @ 119

 

 

 

Braking 70-0 FT

 

Z06 153

 

Exige S 154

 

911 GT3 145

 

Atom 148

 

Noble M400 157

 

Brock Coupe 153

 

 

 

300-FT Skid Pad

 

Z06 0.99

 

Exige S 1.00

 

911 GT3 1.05

 

Atom 1.08

 

Noble M400 1.02

 

Brock Coupe 1.12

 

 

 

Lane Change MPH

 

Z06 66.3

 

Exige S 75.8

 

911 GT3 70.9

 

Atom 70.8

 

Noble M400 74.4

 

Brock Coupe 72.4

 

 

 

Atom Noise Level

 

Idle 72db

 

Full throttle 118db

 

70-mph cruise 103db

 

 

 

I havent gotten the magazine so just cut and pasted this from the Atom forum (the poster there does have the mag). The Atom equaled or bettered every car here including the Z06. Shame they didnt include a Seven in the test since I think it comes closest to the Atom conceptually.

Link to comment
Share on other sites

The Atom (as available in the USA) isn't so cheap, you know...and then there's the problem of registration/inspection/titling in some states. I know there is no way I'd be able to get one through NJ...based on what I had to do for the Se7en (mine is registered as a new car).

Link to comment
Share on other sites

Yeah, it isnt all that cheap in Britain either, although the guys over there on that forum all seem to think its a screaming deal. Cost is what sent me looking at Sevens, which I figure have to be pretty close in performance.

 

 

 

Given the choice between a new Caterham or an Atom, I think I'd choose the Atom. Price seems pretty comparable. But compared to the Ultralite I've chosen, the Atom is close to twice the price. I doubt its got twice the performance. Still, I hope to see some real comparison between the two some day just to see how they stack up.

 

 

 

In California there are guys registering the Atom via SB100, though that probably isnt totally legit. Other states seem to be a piece of cake, some there is no way.

Link to comment
Share on other sites

Well, this cold weather sucks, but I still went out for a ride today http://www.usa7s.com/aspnetforum/images/emoticons/thumbsup.gif

 

 

 

I finally found a quiet spot, and laid some rubber. Guess what... it's just an open diff! I was told it might be a TruTrac diff, but I have one long nice tire mark to prove it.

 

 

 

LSD or Quaife should help with the 0-60 times.

 

 

 

Question is... which would you go with?

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...