Lanz N Bulldog Tractor with Magic Motor
designed and built by Bruce Geange

Prototype

The Lanz N Bulldog tractor was imported into New Zealand in the 1930s in large numbers and was equipped with three forward speeds and one reverse. The  engine, which had a single cylinder, was started by using a blowlamp to heat a hot bulb, located in the front of the machine below the radiator, up to a temperature that would ignite the crude oil fuel. Once started the engine ran at 540 rpm. Because the engine had just a single cylinder there were two large flywheels located each side of the engine and represented in the model by the Contrate Wheels. A feature of the prototype was the thumping sound of the running engine. Because of the lack of balance inherent with a single cylinder engine the tractor tended to bounce on its wheels when not moving.

Comments

This is a general model building plan. The model has working steering (the tricky bit) and is powered by a Magic Motor. Further pictures are available on CDRom from the editor

DA (Please refer to the last picture)

P/N 111c Bolt 3/8" holds, P/N 23a Pulley with Boss 1/2" loose, P/N 142c Tyre 1", P/N 38 Washer Standard, P/N 37a Nut locknutted to, P/N 235g Narrow Strip 11/2" and, P/N 11 Double Bracket 1/2" x 1/2" x 1/2", P/N 37a Nut locknutted.

P/N 147b Pivot Bolt Slotted locknutted to, P/N 11 Double Bracket 1/2" x 1/2" x 1/2" bolted to, P/N 10 Fishplate 1".

DB

P/N 37b Bolt holds, P/N 235 Narrow Strip 21/2" loose, P/N 37a Nut locknutted to, P/N 12 Angle Bracket 1/2" x 1/2", P/N 37a Nut locknutted.

DC

P/N 111c Bolt 3/8" Head, P/N 235g Narrow Strip 11/2" loose, P/N 37a Nut locknutted to, P/N 235 Narrow Strip 21/2", P/N 37a Nut locknutted.

DD

Same as DB.

DE

P/N 37b Bolt, P/N 235g Narrow Strip 11/2" loose (from DC), P/N 128 Bell Crank with Boss loose, P/N 37a Nut locknutted to, P/N 37a Nut locknutted.

DF

P/N 111a Bolt 1/2", P/N 128 Bell Crank with Boss loose, P/N 37a Nut locknutted to, P/N 12 Angle Bracket 1/2" x 1/2" (tilted), P/N 37a Nut locknutted.

DG

P/N 37b Bolt head, P/N 235h Narrow Strip 2" loose, P/N 37a Nut locknutted to, P/N 128 Bell Crank with Boss other end, P/N 37a Nut locknutted.

DH

P/N 111c Bolt 3/8", P/N 235h Narrow Strip 2" loose, P/N 37a Nut locknutted to, P/N 62 Single Arm Crank, P/N 37a Nut locknutted.

DI

P/N 62 Single Arm Crank boss fixed to,  P/N 16b Axle Rod 3" (steering column).

DK Attaching motor to chassis.

13/4" Screwed rod, P/N 37a Nut locknutted to, P/N 10 Fishplate 1" and, P/N 9c Angle Girder 3", P/N 2a Perforated Strip 41/2", P/N 37a Nut locknutted, Magic Motor, P/N 37a Nut locknutted to other side of Magic Motor, P/N 38a Spacer Plastic Standard, P/N 2a Perforated Strip 41/2", P/N 9e Angle Girder 2", P/N 10 Fishplate 1", P/N 37a Nut locknutted.

GA Drive and Gearing.

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