The 5M blowers just about run at full speed if they don't already, and the 4Ms do run at full speed.
Well you do know that with a 4/5 port Thunderbolt, if you up the chopper level to either 6 or 7 and you can make it sound almost identical to a Hurricane.
There isn't really any testing needed. Jeb just said that he has tested it before and told us the conclusion. A single tone rotor will obviously push more air, because there isn't any restrictions on it. A dual tone rotor has the issue of ports opening and closing at different spots, where one port can be open and another closed, or halfway open causing air pressure to increase a little or a lot. This is why Jeb was having issues with that 6M 1000T opening the relief while it was running. The 10HP motor is turning the blower at a higher rate and causing the air pressure to rise. Remember that the 6M has a 6 inch air intake and outtake. That's a lot of air moving through it.coastalsyrolover wrote: ↑Tue Mar 28, 2017 5:09 pmSince I have a single tone without a blower, maybe I should test that theory (by renting a blower). I have noticed single tones look to be able to handle a bit more air than a dual because of the straight line as opposed to "2 lines." I'm no expert but I think another thing that helps the hurricane is the fact that it has 2 single tone choppers (with huge ports and a gigantic blower as mentioned earlier) instead of one dual tone chopper where the air might not get pushed as easily but also the dual tone harmonies on a single chopper (not single TONE chopper... one chopper with 2 rows) I want to say "absorb" the sound or cancel it? Doesn't matter up close but further away you can really notice it. Going back to the blower thing I think it's interesting that the 5M is the loudest for the dual tone but the 6 is loudest for the single tone while the 5M on a single tone doesn't affect it (or just barely affects it) compared to the 4M. Also thinking that while trying to push for more CFM you also increase air pressure. Air pressure is basically brakes or a hill on the back tires of your car. It pretty much bogs the motor down at some point as mentioned earlier.
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