Oddball engines and prototypes

[katinas]

Perhaps trying to maximize bottom end power for stadium Superenduro ???

Everyone who tried it are very satisfied and yes much better througth rev range than older ones.

Upd. After 16 hours of run, piston ring snagging again. Very clear boundaries of piston dome color.

[Pursang]

Here is a video with some interesting moments (and a fair bit of Seppo Youtube Wankerism)

https://www.youtube.com/watch?v=LyI3KWMWbB4

Tip: watch without sound, pick through the bits with the viewing peaks.

Overview: 3D printed carbon fibre reinforced piston fitted in an old quad bike.

Test run: repeating slow U turns and accelerating, up to 42 mph.

Results: lasted 1min 30sec. Top ring separated and stuck in top of bore.

Melted crown, but skirt and gudgeon pin looks OK. (Go to minute 26).

My Take: Idea has some potential, if development and testing is done under controlled conditions.
eg, I think, at one point, some extra height was arbitrarily added to the crown. If it was detonating it would probably be quieter than usual.
Perhaps it needs an alloy insert to protect the crown and conduct some heat through the rings.
Different combinations of carbon and poly might be more heat resistant.
Perhaps oven/kiln baking to reduce the Poly and Set the carbon could work. Lots of ideas to investigate. Please let me know, when You get it right!