[Roadsters] corner weights

[steven boortz]

hi again

to answer some questions:

my seat is an UltraShield unit bolted directly to the floor, as far back as possible.  the full sized battery is in the trunk on the right side.  i have an AutoPower rollbar.  no ballast, save for my rear end!

i did not weigh the car without me in it (the rules weigh the car with driver).  the front sway bar was connected.  there is no rear bar.

i hope that helps.

s
675MIZU




________________________________
From: steve newby <csp541983rx7 at yahoo.com>
To: steven boortz <vociferouschicanery at yahoo.com>
Sent: Wed, March 17, 2010 12:27:49 PM
Subject: Re: [Roadsters] corner weights


Well. you got some issues there!! 
 
Why the lr is so much less than the rr? Normally the drivers side will be higher than the pass with driver in place.  but the LF 100 lbs higher, and LR 25 # LIGHTER?  #1 mistake made here is did the weights get taken with the sway bar attatched? a preload on the bars will give you wonky weights every time.
 
you want to try and get the diagonals % as close to even Left-Right as possible
 front to rear bias on a side is nowhere near as important as the diagonals, Ideally you would have 25% on each wheel, but that almost never happens. 
 
Unless you've deliberatly set up for a predominantly left hand turn track?  I cant explain the LF being so high, the LR being lower can be partially explained by rear mounted Batt. However driver weight on the roadster is primarily behind the balance point (look at where your butt sits) so you should see a little less gain on the front as the drivers rear when you get in the car.
 
The difference in diagonal weight % will make the car turn in different from left to right

--- On Wed, 3/17/10, steven boortz <vociferouschicanery at yahoo.com> wrote:


>From: steven boortz <vociferouschicanery at yahoo.com>
>Subject: [Roadsters] corner weights
>To: "roadsters" <datsun-roadsters at autox.team.net>
>Date: Wednesday, March 17, 2010, 11:12 AM
>
>
>hi everyone
>i was at the track last weekend (California Speedway), and had the opportunity to weigh my car finally, with the following results (with me in it, and about 1/2 tank of gas):
>
>LF:  592      RF:  494
>
>LR:  476      RR:  491.
>
>total 2053.  i'm about 200 with my helmet.
>
>s
>675MIZU
>________________________________________
>Datsun-roadsters at autox.team.net
>Donate: http://www.team.net/donate.html
>Suggested annual donation  $16.00
>Archive: http://www.team.net/archive
>Forums: http://www.team.net/forums
>Unsubscribe/Manage: http://autox.team.net/mailman/options/datsun-roadsters/csp541983rx7@yahoo.com