Bon Jour!
Ok I thought I knew a thing or two about combustion chamber design, squish bands and so on and now I found this on a DT 125 R I'm fixing up for a friend:
[Vous devez être inscrit et connecté pour voir cette image]Sorry for the pics being so big, I always struggle with it.
Here from another angle:
[Vous devez être inscrit et connecté pour voir cette image]And the piston crown;
[Vous devez être inscrit et connecté pour voir cette image]So can someone please explain how this combustion chamber works, I never saw something like this I mean I've seen older two strokes without a squish band but these were not performance engines, it was engines with very little assistance from a sort of the exhaust chamber.
Now this is an engine with 6.5:1 compression and 28 hp, ypvs and so on. So not exactly a slug
How can this be without a squish band and what is that ridge on the edge of the c. chamber ?
How does this work ,please anyone that knows will please explain?
Thank you very much.
Fernando
Aujourd'hui à 1:03 par MacPepR
