by: JGraf
this is just my rendition of how a papyrus t/a setup can be made and does not reflect what is real or fact but only what seems to work great for myself and has helped many others.
:: SECTION ONE :: Making Gears
- with a lower than typical spoiler, make some laps... enter the highest speed area of the track and get up to max mph fast as possible, to where the braking or slowing point should begin. [ record max mph/speed obtained ]
- this provides a starting point to begin making gear sellections.
:: using the rearend gear ratio calculator :: located here >> http://www.geocities.com/jagid_3 ( on the ToolBox page )
- enter the - rpm desired ( 7800 ) personal preference.
- enter the tire size ( 26.5 ) standard papyrus/nascar2003season tire size.
- enter the peak mph/speed ( xxx ) - [ calculate ] - [ record ratio ]
- now i have a good idea what the rearend gear ratio should be for the mph/speed needed.
- i use this same ratio for my tallest final drive gear.
- 1st gear should be tall enough to keep the rear tires from spinning to easily on exit of those slow turns and hairpins, and also tall enough not to lockup the rearend while braking and downshifting hard and fast aproaching them slow turns.
- i sometimes reduce the number of gears i will use depending on the track, which does two things : - helps minimize the %chances for a mechanical gear loss to occure.
- can allow better gear seperation... i like to see optimum shifts ranging between 6500rpm to 7800+rpm.
:: SECTION TWO :: the Garage
- some settings never need to change... this narrows down needed changes.
- if a value entered below is marked with a ( * ) - i use it always, as is and at every track unless otherwise specified.
- an ideal balance -
- tire tempatures shown below are only for example -
o (outside) m (middle) i (inside) tire temps.
o m i i m o 184 188 191 < LF ======== RF > 191 188 184 < showing 7*degree camber tempature from cooler outside to hotter inside of tire temps.
| | 188 188 188 < LR ======== RR > 188 188 188 o m i i m o
above ^ is what tire temps, psi's and camber readings should look like after 10+ laps of consistant up to speed roadcourse driving.
NOTE: in actual setup conditions, there seems to be a flaw with the left front tire heat readings... they will typically show cooler values than the rest. (ignore it)
- base your left to right weight distribution balancing by rear tire temp readings only.
:: SUSPENSION :: steering ratio: xx :1 [ higher number = less steering range ] adjust to help correct over steer and understeer.
[ FRONT ] tire pressures: adjust so center tire temp reading is between the tire's outer and inner temps [ see illistration above ]
compression: 1 [ higher number = stiffer ]
rebound: 9 [ higher number = stiffer ]
* springs: 450lb. < > 450lb. camber: adjust so tires maintain 5* to 7*deg across the tire from cooler outside to hotter inside of tire temps [ see illistration above ]
* caster: 6.00deg. < > 6.00deg. * ridehight: 4.50in. < > 4.50in.
front brake bias: start with 60% "controller dependant" observe wheel lockup in the live viewer replay, adjust as needed.
* front toe-out: 0.200in. front roll couple: xx% ( ignore this - base all setup changes made on tire heat readings ) [ see illistration above ]
front swaybar: [ higher number = less sway ] adjust's amount of front body roll through turns.
rear swaybar: [ higher number = less sway ] adjust's amount of rear body roll through turns.
[ REAR ] tire pressures: adjust so center tire temp reading is between that tire's outer and inner temps [ see illistration above ]
compression: 1 [ higher number = stiffer ]
rebound: 1 [ higher number = stiffer ]
* springs: 150lb. < > 150lb. * camber: 0.00deg. < > 0.00deg. * trackbar: 8.50in. < > 8.50in. * ridehight: 6.00in. < > 6.00in.
:: DRIVETRAIN / AERO :: * grill tape: 70% at 70*f clear
spoiler: 70deg. [ unless by lowering , top speed increases as a result. ]
differential ratio: ( x.xxx ) [ enter recorded rearend diffrental calculator ratio here ]
transmission ratios: < > for adjusting final drive ratios < >
final drive ratios: 1st: [ tall enough to prevent wheel spin durring hard acceleration out of slow turn exits. ]
2nd: [ span evenly between other gears ]
3rd: " 4th: " 5th: " 6th: [ enter recorded rearend differential calculator ratio here ]
:: WEIGHT BIAS :: front bias: 50% ~ adjust based on front to rear tire temp readings, after several laps. [ up 50% + moves weight/tire heat forward, down 50% - moves weight/tire heat rear ]
left bias: 50% ~ adjust based on left to right side tire temp readings, after several laps. [ < 50%+ moves weight/tire heat left, 50% - > moves weight/tire heat right ]
wedge: 50% NOTES: when making any adjustments... tire tempature readings will dictate the setups correct or incorrect balance.
DRIVING INSTRUCTIONS:
- all aids OFF - including the auto clutch aid OFF - use slight forward throttle together with braking to prevent rearend lockup when downshifting.
- cockpit view is manditory to properly simulate the developers intended driving experience by design.
- quality practice time.
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