My mate converting an Iveco truck from box to platform with back mounted crane and since in unladen state rather large mass located at rearmost point it's intersting how it will behave at high speed (high for truck
) so I want recreate it inside LFS.
.
Plan is: place native mass objects, build frame with extra mass objects, make sure weight distribution corresponds to EUROCARGO ML180E25S specs, then add bed and crane.
then modeled frame and bed in CAD and calculated mass per metre to build frame in Vehicle Editor.
Truck frame (without bed and reinforcement for crane load) set to 1202kg.
Front axle of similar capacity mass (with oil and brakes) is 316kg. Front axle set to 283kg.
Rear axle if similar capacity mass is 645kg. Rear axle set to 600kg.
LFS Editor sets mass of four wheels to 176 kg. Conditionally divided mass into six wheels — two front, four rear — about 30kg each.
315/70R22.5 tyre mass is 59.70 kg. 315/60R22.5 tyre mass is 58.42 kg. 9.00x22.5 rim mass is 44.03kg. So one wheel mass is about 100kg, therefore added 406kg proportionally.
Same with spare wheel, but since frame tubes can only be added symmetrically, as well as spare tyre itself can be placed only in center, so additional 44kg is halved.
Wheels, spare wheel and battery additional mass is 500kg.
Cabin structure based on pic from Scania Truck Bodybuilder — Cab Structure (1038kg).
Truck chassis is 5315kg total. Compared to closest in mass Iveco chassis not more than 28kg discrepancy along the axes. It is acceptable.
Truck chassis with bed mass is 6034kg (bed 719kg).
Crane 1758kg
I make cabin and dashboard in Blender as I like, not trying to copy any particular model, but I am inspired by various MAN and Scania trucks.
) so I want recreate it inside LFS.Mass / Object PositionsSome heavy parts mass cannot be set in mass menu, while some of these are unsprung, at least for now only way to set them — tubes, so they will be sprung
.Plan is: place native mass objects, build frame with extra mass objects, make sure weight distribution corresponds to EUROCARGO ML180E25S specs, then add bed and crane.
Mass > Frame (literally)First I went outside and take some measurements
then modeled frame and bed in CAD and calculated mass per metre to build frame in Vehicle Editor.
Truck frame (without bed and reinforcement for crane load) set to 1202kg.
Mass > EngineLFS Editor assigns mass of 5883cc engine 294kg. Cummins ISB 5.9L mass is 520kg. So added 226kg, then gearbox 350kg and radiator 99kg.
Mass > Suspension
Front axle of similar capacity mass (with oil and brakes) is 316kg. Front axle set to 283kg.
Rear axle if similar capacity mass is 645kg. Rear axle set to 600kg.
WheelsBy the way, factory truck had all wheels 315/70R22.5 and factory floor had continuous transverse beams that lay on longtitual beams of subframe. But bed must be low as possible to fit taller payloads and for that reason decided to T-weld transverse beams and to use rear tyres with lower profile: 315/60R22.5.
LFS Editor sets mass of four wheels to 176 kg. Conditionally divided mass into six wheels — two front, four rear — about 30kg each.
315/70R22.5 tyre mass is 59.70 kg. 315/60R22.5 tyre mass is 58.42 kg. 9.00x22.5 rim mass is 44.03kg. So one wheel mass is about 100kg, therefore added 406kg proportionally.
Same with spare wheel, but since frame tubes can only be added symmetrically, as well as spare tyre itself can be placed only in center, so additional 44kg is halved.
Mass > BatteryMass of one Promotive 680108100 — 45.1kg, truck has two. Native maximum 40 kg battery can be moved to the side, but additional 50kg is halved as well.
Wheels, spare wheel and battery additional mass is 500kg.
Cabin structure based on pic from Scania Truck Bodybuilder — Cab Structure (1038kg).
Truck chassis is 5315kg total. Compared to closest in mass Iveco chassis not more than 28kg discrepancy along the axes. It is acceptable.
- IRL — 3440kg (64.2%) front and 1920kg (35.8%) rear;
- LFS — 3423kg (64.4%) front and 1892kg (35.6%) rear,
Mass > Bed
Truck chassis with bed mass is 6034kg (bed 719kg).
Mass > CraneI made crane with "LFS tubes" model in CAD to make sure COG matches, was only necessary to finish moving parts, cause I've already made model of fixed parts (using drawing from palfinger.com and self measurements) to calculate reinforcements of the frame tail, but that's another story.
EngineCummins 5.9L 24V (ISB).
Final driveGearbox ratios from ZF 6S800.
MeshCurrent exterior progress
I make cabin and dashboard in Blender as I like, not trying to copy any particular model, but I am inspired by various MAN and Scania trucks.
