12-24-2017, 10:15 AM
Piston-port motors also have + and - pulses in their crankcases. I'm guessing that the 2-strokes that need to run upside-down (i.e., like weed-whackers and chainsaws) bring the crankcase pulses up to the pumper section of the carb, either through a passage or a hose.
The alternative is to use the pulses in the intake tract, but I'm guessing that they're much weaker. Apparently they're strong enough to get the job done in some applications.
I guess I'll have to check next time I have a weed-whacker or chainsaw apart. I'm sure most of you guys know this cold?
The alternative is to use the pulses in the intake tract, but I'm guessing that they're much weaker. Apparently they're strong enough to get the job done in some applications.
I guess I'll have to check next time I have a weed-whacker or chainsaw apart. I'm sure most of you guys know this cold?