Does anyone know if there is a preferred angle to dump your exhaust into the airflow around the airplane? obviously this could change depending on where you are dumping (in this case, underneath the plane, out from the back/bottom of the cowl)
In other words, is there a way to pickup a little suction to help aid in scavenging exhaust from your cylinders by placing it at a certain angle? I've tried several different dumps on my homebuilt header setup and haven't noticed any difference... but it got me thinking, I wonder if there is a method that works better than another etc.
And if anyone has ever wondered what a 4 into 1 longtube setup sounds like on a big bore rotax 912 with no muffler, this would be what that sounds like
