Hello all!
I am considering developing and designing a 4 stroke engine for model use. I would like to know how you at the zone consider the market! I was thinking of 3 options sold individually:
a) Sell 2D plans only.
b) Sell 2D plans & 3Dmodels.
c) Sell castings and plans. Everything you need is in the box, semi finished. Carbs and ignition included. In all; everything you need to get the engine running.

I am an IC engine designer/engineer, but not familiar with the model scene;
what kind of engine specs would be popular (inline twin, v-twin, fours etc.? Displacement pr. cylinder (ccm)? Is a reduction gear required?

Estimated prices for a Twin 180 deg crank, DOCH, approx 35-75 ccm:
a)200 Euro
b)500 Euro
c)12-1500 Euro

All castings (Aluminium, cast iron & steel) will be investment castings. Thanks for all feedback!

Best regards
John