MIDGET 
GAS ENGINE BUILD
Part seven (conclusion) by Jason Ballamy
Part four - by Ramon Wilson

The last major part to be made was the ignition timing bracket which was hacked to shape on the CNC.

.

A few holes and a bit of filing and it was done.

.

Some brass hardware was turned plus a steel screw to allow the clamp to be adjusted so that timing could be advanced or retarded. A couple of Corian insulators completed that assembly.

.

A piece of 8mm copper tube was bent to a pleasing shape and silver soldered to the previously machined flange to complete the exhaust.

.

In keeping with the age of the engine some slotted Fillister head screws were made up in M3, M2.5 plus an M2 one with an additional straight knurl for adjusting the carb slow running position. A single large but flat headed one was made to seal the oil level hole.

.

Collection of  58 parts and 32 fixings.

.

After a quick test run to see if everything work the engine was stripped down again and a bit of colour added, in this case Dodge Orange VHT paint and some satin black stove paint for the exhaust. I also made the stands to display it on from a couple of bits of 1/4" thick aluminium angle that were pocketed out on the CNC.











 
https://www.sarikhobbies.com/model-engineer-builder/

Modelengineeringwebsite.com

the only free and the only weekly magazine for model engineers. 

Editor: David Carpenter