Legoist's Lego Technic TGB Racing Car

[DLuders]

Legoist/ yamsemaj posted this

of his Lego Technic TGB Racing Car. As described on his website,

"Finally, after several weeks of development frequently interrupted by all sorts of distractions, the TGB is finished. This is the largest Technic car I have built so far. Though not intended as a replica of a real-world car, its component layout and some proportions are very loosely based around the legendary Ferrari 288 GTO ― and hence its name: "TGB" is "GTO" scrambled through ROT-13.

Length: 66 studs

Width: 29 studs (34 including mirrors)

Height: 16.5 studs (bodywork only: 15 studs)

Weight: 2.38 kg

Suspension: Full independent, with front toe-in

Power: PF, 2x Battery pack

Drive: 1x PF XL motor (remote), RWD

Steering: 1x PF M motor (remote) with working steering wheel, Ackermann

"Features:

* V12 mid-mounted engine

* 6-speed synchronized gearbox

* Pneumatically liftable nose (with motorized pump)

* Handbrake

* Remotely operable headlights

* Remotely moveable rear wing

* Openable spring-loaded bonnet

* Toolbox

"Obviously, instead of forming the entire bodywork with panels, I've rather opted for the old-school rough contoured approach using beams and a couple of soft-axles. The model is built completely with studless parts, with sole exception being the rear lights that rely on studded transparent cylinders.

The engine and gearbox consist of standard Technic parts for the purpose: cylinder blocks, pistons and cranks in the engine, and three dog-rings (for six gears) moveable with a stick in the familiar H-pattern for the gearbox. At the final stage there is a standard Technic differential. The car is driven by a single PF XL motor connected to the engine crankshaft, but due to large car weight and many transmission components that introduce significant torque, it isn't blindingly fast.

"Independent suspension and its rear half-axles are based on parts from the 8070 Super Car, though with "artificially" extended arms to comply to the desired total chassis width and allow the larger moving extents. Height of the front suspension is determined by two parallel pneumatic cylinders that control the total height of the chassis at the front, but due to the compressibility of air, front wheels can still move with a degree of independency ― and the pneumatic cylinders even provide some damping and elasticity. To raise the car nose, the air is pumped into the cylinders with an onboard motorized pump controlled by the levers in the cockpit. Only the compression is required; when the switch is flicked in the opposite direction, the weight of the car lowers the chassis (compresses the cylinders) itself. The rear suspension is rather standard, with only two soft (light grey) springs per wheel. That is intentional: it lets the car sink approximately 3/4 of total spring extents, for a more realistic and low-laid sporty look."

There are many more details and pictures on his website.