Well, i guess you missed post 99 And post 101 where you quoted the link with the picture in it I guess this means you just joined the jealious club of American?
I was not referring to accoustical wave tuning. Only air flow reversion. Single cylinder lawnmower engines are the easiest to see the reversion effect. A damper hinged at one side and placed in the induction path down stream of a carburetor or butterfly such as a throttlebody will quickly show the effect. While the engine is running at part throttle, it will flip back and forth on each induction cycle just as a reed does in an engine but free floating without the spring returning it, just reversion. Sudden throttle opening causes it to slam open and slam closed, then gradually returns to a back and forth movement. Imagine what happens on a two-stroke snowmobile engine at sudden throttle opening at launch. It makes accurate carb fuel metering very difficult. Wild porting just exacerbates it. Multi-cylinder 4-stroke carbureted racing engines I've dynoed with EGTs and oxygen sensors in all eight exhaust pipes are another problem, in that reversion "cross talk" at WOT full load interferes with individual cylinder air/fuel distribution. This effect is, as you say, more pronounced at rpms farthest from the peak torque and peak hp rpm ranges. Unfortunately, this is the range where most engines are operated in. Devices which are designed to capitalize on reversion pulses to help atomize fuel have been shown to improve air/fuel mixture variation by as much as 43%. The result is more throttle response, better low speed torque, better fuel efficiency and reduced emissions. phd cheif mousetrap advisor to the stars
I have 2 last things to say on this and I'm out. The bot is getting boring http://cs.amsnow.com/snocs/forums/p/38902/193453.aspx and Out Guess this will get qouted a few times too
this things gotten outta control. Im drinking and I probably shouldnt say it, but my new reed design is better. I completely removed the reeds!!!!!!reeds are overated!!!
Tarzan say fuck off new reed make chimp fastest in jungle. Jane no catch chimp cuz she has old reed. Not for sale