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Ronald Wright, Waikuku Beach, New Zealand firstname.lastname@example.org 8/4/2010
Horizontal Hit and Miss #1
This is the
first engine I have built ,quite an exercise as have only recently
acquired a lathe & mill. I am 71 years old so left it very late !!
I live at Waikuku Beach ,in the south island , NZ.
The engine is built from David Kerzelís plans with very few changes , the proportions are very good, & is built from bar stock ,mainly mild steel.
I only bought the timing gears & the spark plug ( 14/32 ) plus the ignition parts. It weighs about 5 kg.
Bore is 22mm. Stroke 25mm. The cylinder sleeve is chrome moly , piston & con rod alloy, with Viton O ring. Flywheels 105mm. Mild steel.
J.E.H. module with hall sensor running on 4.8 volts , have included
retard & advance, but seems to start & run on about 8deg btdc.
Made the valves one piece , real tricky little things , but eventually got compression. Am running on regular petrol plus 5% wd 40. Is starting
First flick most times, running about 500 rpm.
The wood in the base is Black Maire, a native of NZ.
YouTube - model engine ronald to see it running.
Note: Several people have started to build this engine and I believe this is the first one I have seen running. Ronald made a bunch of changes but that is what's so great about this hobby is adding your own ideas. David Kerzel
Copyright 2010, Florida Association of Model Engineers and engine builder as noted above, All rights reserved.