Here is the default playertype code, just go through it and change the values.
I've bolded what you want to take a look at.
Sorry it's small, but it might be page-stretching otherwise.
Changing that value to 1620 will give you 1.5 of the player's current jump.
(1080 x 1.5 = 1620)
I may be wrong in this entirely but try it out and see what you get.
//--- OBJECT WRITE BEGIN ---
new PlayerData(PlayerStandardArmor) {
className = "Armor";
shapeFile = "base/data/shapes/player/m.dts";
emap = "1";
renderWhenDestroyed = "1";
mass = "90";
drag = "0.1";
density = "0.7";
maxEnergy = "100";
maxDamage = "100";
disabledLevel = "1";
destroyedLevel = "1";
repairRate = "0.33";
rechargeRate = "0.8";
inheritEnergyFromMount = "0";
isInvincible = "0";
firstPersonOnly = "0";
thirdPersonOnly = "0";
useEyePoint = "0";
observeThroughObject = "0";
computeCRC = "0";
renderFirstPerson = "0";
pickupRadius = "1.25";
minLookAngle = "-1.5708";
maxLookAngle = "1.5708";
maxFreelookAngle = "3";
maxTimeScale = "1.5";
maxStepHeight = "1";
runForce = "4320";
runEnergyDrain = "0";
minRunEnergy = "0";
maxForwardSpeed = "7";
maxBackwardSpeed = "4";
maxSideSpeed = "6";
maxUnderwaterForwardSpeed = "8.4";
maxUnderwaterBackwardSpeed = "7.8";
maxUnderwaterSideSpeed = "7.8";
runSurfaceAngle = "70";
minImpactSpeed = "30";
maxForwardCrouchSpeed = "3";
maxBackwardCrouchSpeed = "2";
maxSideCrouchSpeed = "2";
airControl = "0.1";
cameraTilt = "0.261";
cameraVerticalOffset = "0.75";
cameraHorizontalOffset = "0";
cameraMaxDist = "8";
cameraMinDist = "0";
jumpForce = "1080";
jumpEnergyDrain = "0";
minJumpEnergy = "0";
minJumpSpeed = "20";
maxJumpSpeed = "30";
jumpSurfaceAngle = "80";
jumpDelay = "3";
jetEnergyDrain = "0";
minJetEnergy = "0";
canJet = "1";
boundingBox = "5 5 10.6";
crouchBoundingBox = "5 5 4";
horizMaxSpeed = "68";
horizResistSpeed = "33";
horizResistFactor = "0.35";
upMaxSpeed = "80";
upResistSpeed = "25";
upResistFactor = "0.3";
decalOffset = "0.25";
jetEmitter = "playerJetEmitter";
jetGroundEmitter = "playerJetGroundEmitter";
jetGroundDistance = "3.98827";
footPuffNumParts = "10";
footPuffRadius = "0.25";
JumpSound = "JumpSound";
mediumSplashSoundVelocity = "10";
hardSplashSoundVelocity = "20";
exitSplashSoundVelocity = "5";
impactWaterEasy = "Splash1Sound";
impactWaterMedium = "Splash1Sound";
impactWaterHard = "Splash1Sound";
exitingWater = "exitWaterSound";
Splash = "PlayerSplash";
splashVelocity = "4";
splashAngle = "67";
splashFreqMod = "300";
splashVelEpsilon = "0.6";
bubbleEmitTime = "0.1";
splashEmitter[0] = "PlayerFoamDropletsEmitter";
splashEmitter[1] = "PlayerFoamEmitter";
splashEmitter[2] = "PlayerBubbleEmitter";
footstepSplashHeight = "0.35";
groundImpactMinSpeed = "10";
groundImpactShakeFreq = "4 4 4";
groundImpactShakeAmp = "1 1 1";
groundImpactShakeDuration = "0.8";
groundImpactShakeFalloff = "10";
uiName = "Standard Player";
rideAble = "0";
canRide = "1";
maxItems = "10";
cameraDefaultFov = "90";
showEnergyBar = "0";
aiAvoidThis = "1";
cameraMaxFov = "120";
maxTools = "5";
brickImage = "brickImage";
cameraMinFov = "5";
speedDamageScale = "3.8";
maxWeapons = "5";
};
//--- OBJECT WRITE END ---
Poll