tree monkey
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I feel if you need to add fingers to a work saw that your transfer aren't right.
I believe you are correct, I've seen fingers gain and not change a thing.I feel if you need to add fingers to a work saw that your transfer aren't right.
I've ported hundreds of 066/660's and there are saws that I can remember.Maybe this isn't the right thread to discuss this, but why it that if you run 10 of the same model saws one will just seems happier than others??? That's my 024 it's just a happy little saw!
This is very true. I think the mains need to be responsible for shaping and delivering the "main" charge, while the fingers augment this delivery.fingers should be looked at as boost ports, angled up and open last.
So this is why on the quad jugs the mains open first and flat, then the secondaries open aimed at the intake and toward the roof?fingers should be looked at as boost ports, angled up and open last.
They don't exactly do that Dan.So this is why on the quad jugs the mains open first and flat, then the secondaries open aimed at the intake and toward the roof?
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Ok. I've got to go look at some jugs again...[emoji23]They don't exactly do that Dan.
On the ones I've seen, they open Exhaust main lip first, intake secondary lip second, then both uppers start to fully open. They look like a "V" if the shape were to be exaggerated with the cylinder upright. A longer leg on the exhaust side of the "V". The mains open at a flat angle and the secondaries angled up, like you've said.
The piston is still pushing mix out of the crankcaseI get the true boost port theory, but after the mains open, what pressure is there to drive any flow in the tiny cross sectional area of a finger port?
I think 10 is optimistic.how much case pressure do you guys think a saw has?
it's just a few pounds, maybe 10. any more and the impulse hose and pump diaphragm won't hold up.
velocity means very little, volume mean more, direction is key.