Trailer Tr4 MkII Add1

MOC designer Ingmar Spijkhoven

Difficulty: Moderate

Posted: Aug 11, 2017

Purchase for $21.50
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Both Models included in ”Trailer Tr4 MkII Add1”, the jeep and the booster, are build with LEGO® in scale 1:17,5 and have simple LEGO® Power Functions. It is not build after a specific brand or type of trailer. This build represents both a two axle jeep and a two axle booster.

The trailers features: solid axle suspension on all axles, one set of lights, the jeep has both a kingpin and fully functional fifth wheel and both have manually operated landing gears.

Different states, different regulations! Depending on the combinations overall weight, so the total weight of the truck, the trailer and the load, more axles might be required. Adding axles however is not that easy, it's not that you go to your local dealership and ask them to add an extra axle to your truck and trailer.

A jeep or dolly is basically a simple chassis with a couple of axles and a fifth wheel. It is much like the rear end of a semi-truck. The booster is located at the rear end of the lowboy. It has a pivot point to make the axles follow the trailer easily. The purpose of both is to spread load over more axles, this way the weight per axle is suppressed.

As one of the designer's trademarks this truck model is provided with full solid axle suspension on all axles, so including the front steered axle. Regular LEGO® Technic shock absorbers proved too large. Instead Rubber Belts are used, to achieve this the movement is converted using a lever constructions.

Truck models "Truck T12 MkII" and "Truck T3 MkII" are specifically designed to be used with this lowboy trailer combination. The first one will be available April 2015. Instructions for "Truck T3 MkII" will be available the second half of 2015. Both the looks and the specifications of these trucks are adjusted to match this rather heavy lowboy trailer combination.

With the use of this jeep or dolly "Trailer Tr4 MkII” can be combined with both "Truck T1 MkII” and "Truck T2 MkII v2.0”.

Attention!!!: Both needs to have an extra Power Functions Extension Wire added though to operate the gooseneck of "Trailer Tr4 MkII”!!! It is easy to install.

Attention!!!: LEGO® Technic set 8258 Crane Truck needs to be adapted and requires a modified jeep!!! Instructions on how this set needs to be adapted are already available. The instructions for the modified jeep to be combined with LEGO® Technic set 8258 Crane Truck will be available soon!

You can build it yourself! To do so you can buy the Building Instructions. Early in the building process you will see what it is that you are building. You will be very excited from the moment you start the build of "Trailer Tr4 MkII Add1" till you finish it with a total number of about 1150 pieces.

Trailer Tr4 MkII Add1

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Ingmar Spijkhoven's Trailer Tr4 MkII Add1

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