First of all Thank you all very much for sparing your time in giving your precious experiences advices, I learned a lot, Yes one thing I must admit that the Idle of 4stroke is way better than 2 Stroke, and honestly speaking as one of our forum member said, that You would be Addicted to 4 Stroke, I feel no doubt about it, cos, I never saw any 4 stroke giving trouble, naturally Im waiting to buy one first 4 stroke for me. Here I wanna ask one more thing, which size is best to buy in 4 stroke, .46 or more than .61? as Im gonna have a 60 size trainer/advance plane like easy sport, which 4 stroke would go better with it.
Once again I say Thank you all, I really appreciate it.
ORIGINAL: kdc
I think you are referring to the tubes that carry the pushrods that operate the valves.
Valves cannot open and close very quickly so they limit the maximum revolutions on a 4 stroke. 2 strokes can rev more.
2 strokes are cheaper to buy and there is less to go wrong. Only buy a 4 stroke if noise is a problem , fuel economy is important or you do not like a large silencer hanging out of the model.
A plain bearing 2 stroke of a reliable make will give long service without much trouble.
I think you are referring to the tubes that carry the pushrods that operate the valves.
Valves cannot open and close very quickly so they limit the maximum revolutions on a 4 stroke. 2 strokes can rev more.
I was referring right on top of carburator, 2 pipes coming down from the head of engine I think its head, I think those are front 2 valves, I still dont understand what they are
Mody