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Three-wheeled car
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Three-wheeled car (a bit like a Robin Reliant) made mostly of pre-1994 Technic parts with some newer parts as well. It's a bit of a way of using up some spare parts, but given my lack of plates it's rather rough cosmetically. This car has steering, suspension on all three wheels, rear wheel drive, and a four-cylinder inline engine. I did try to give it a two-speed gearbox, but space constraints meant that didn't work out, so it's left with a single speed transmission.
About this creation
Shots of underside of model to show drive train, "gearbox" (single speed was all I could fit in the space available), exhaust pipe layout, and suspension.
Front suspension is simple, single-sided leading arm.
Rear suspension consists of simple trailing swingarms with live rear axle. The anti-roll bar is essential given the tendency of the model to otherwise rock from side to side in the absence of wheels at each of the front corners.

Picture above shows detail of steering mechanism. The steering wheel turns a system of gears which operate on an arm which pushes a rod backwards and forwards , which in turn acts upon a rod which slides in a fixed route alongside the front suspension swingarm. This second rod then acts upon a rod which connects to the front wheel mounting to steer the front wheel. Each of the three rods only moves in one plane.
This shot also shows the mounting of the single shock absorber close to the front wheel.

Following three photos show sequence of front wheel turning from right lock to left lock (with front bumper and grill removed for ease of viewing). The front wheel is positioned as close to the central longitudinal axis of vehicle as I could get it; as the pictures show the tyre is offset slightly from the hub to help achieve centring.

Both doors, and the tailgate, open and close. The two doors have simple sliding locking rods on their interiors.

In the boot space there is a false floor that can be pivoted upwards to reveal the spare tyre stored underneath.

View of the interior, with engine positioned immediately in front of the console. Front seats tilt but do not slide.

View under the bonnet; because of the placement of the front wheel, the engine block is mounted behind the front wheel to the rear of the compartment under the bonnet and only just visible, but I understand this is similar to the situation in an actual Robin.
It's only got a grey bonnet because I ran out of yellow plates.

The red rear wheel hubs (of which I only have two) came from the large red rescue helicopter 8856 from the early 1990s.

Hope you like it !


 I like it 
  June 8, 2016
Great work!
 I like it 
  March 25, 2016
I was just wondering where those red hubs came from... Mechanically impressively accurate Robin you've got here, don't go around corners too fast in it! I always love your old-school building.
By Daniel Wareing
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Added March 21, 2016

LEGO models my own creation MOCpages toys shop Three-wheeled carTechnic

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