|
|||||||||||||
8235 Front End Loader
|
Click the image to download the LDraw file of this model. Model by Dlarian |
Features |
|
Steering
The rear wheels can be steered using an overhead "Hand of God" control.The overhead control drives an axle connected to a pair of 14 tooth bevel gears. The second axle drives a rack via an 8 tooth pinion gear. The steering mechanism itself uses steering arms and toothed links as shown in the computer image. This mechanism makes use of the new gearbox (in red) for the bevel gears, making them a bit easier to assemble and align. The wheel axles are the new 3L axles with stops at the inner ends. This eliminates the need for a bushing on the inside of the steering arm. |
Click for an animation of
the
steering in motion |
Bucket Lift
The front bucket can be lifted via a crank on the rear of the
vehicle. The crank uses one of the new handle pieces on a 1/2 pin
to make turning quite comfortable. The crank turns a worm gear
which drives a 24 tooth spur gear. This gear drives an axle
connected to a pair of liftamrs. The liftarms effectively lock
the rotation of the axle to the Technic beams which make up the main
structural support.The use of a worm gear results in a system which cannot be backdriven (because the axial friction is higher than the backdriving torque due to the screw pitch angle) which allows the bucket to be supported so that it does not fall under its own weight. This mechanism uses the new worm gearbox to align the worm gear and the 24 tooth spur and to carry the thrust loads of the worm gear. Note that the only thing holding the entire assembly to the model would be the 8 studs on the bottom of the gearbox if it weren't for the 6L vertical beams intersecting the lift axle. |
Click for an animation of the bucket lifting. |
Dump
The front bucket can be dumped via a handle on the left side of the
vehicle. The pole reverser handle is connected to a cam (pivoting
on the red axle) and one of the new long connecting rods.
Translation of the rod
causes rotation of the bucket about the lower lugs (green axle).If you look carefully at the animation, you can see that the crank goes over center when the bucket is up which locks it in place and prevents it from tipping. |
|
Dude
This loader is operated by a literal blue collar worker. He sits
in a nicely proportioned Technic seat in the right position, but there
are no simulated controls for him to operate.This particular Technic figure is among the most rare, appearing in only this set. |
|
Wheels and Tires
This set uses four of the 20x30 rubber balloon tires and
wheels. |
Other Views |
|
Side View |
Top
View |
Back View
|
Front View
|
Computer
Render |