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I will now had over the reins to Jason with an overwhelming debt of gratitude for his help in getting yet another of the great pioneers in the world of IC into model form.
The overall external shape was not too hard to draw out being little more than a taper sided box with a flange at the bottom and a few rounded corners and internal fillets.
great improvements, your engine is now a runner...I wonder why do you are using such a sooty flame and not a hotter one ?
You need a pilot for the pilot.
It strikes me that needing CNC to make some of the parts for this engine is not going to encourage people to buy casting sets from Graham.Jo
My R&B has a pair of 12" flywheels (for maximum thumb effect )Jo