tree monkey
Mastermind Approved!
timed cuts and the torque I feel
Smart R&D. I love it.I tested the saw with a stock piston, timed cuts. I then swapped the piston with one with a 4deg duration bevel n the exhaust port. tested and timed cuts. saw was faster and stronger. this tells me to raise the exhaust 2 deg and test again. if I get a gain, then raise 2 deg more. repeat till either no gain or it starts going south. put stock piston in and it will be 4 deg shorter timing. doing this allows me to back up without starting over with a new cylinder.
the other pistons are for the transfers. I was to cheap to buy a 4th piston for the intake, so I ended up grinding it to far. easy fix but loose time for testing.
. I want the saw to be pissed off, angry.
Very Intelligent choices Scott. Always been impressed by your work. R&D at its best.I cut base and squish, widened ports, set port timing, advanced ign timing, muffler mod, some carb work was all done before test 1. from there I use the different pistons to find more gains one port at a time. how the saws feels tells me as much as the timed cuts. I want the saw to be pissed off, angry.
Very Intelligent choices Scott. Always been impressed by your work. R&D at its best.
A smart no frills approach to what will gain and what wont.
I'm gonna have to follow your lead on this one.
How did you carve the piston reliefs? By hand, or on a Mill?
Very Intelligent choices Scott. Always been impressed by your work. R&D at its best.
A smart no frills approach to what will gain and what wont.
I'm gonna have to follow your lead on this one.
How did you carve the piston reliefs? By hand, or on a Mill?
These threads about 461's last few days, makes me want to run out and buy one....
I just glad to see the pink bike is inside safe and sound.........
started with a basic woods port
Looks to me the the intake upper transfer on pto side needs a little more aiming towards intake, and roof is aiming up more than the other side, needs to be flattened.
think about how wide the tr ports are, how narrow the bridge is, what part of the tr is feeding