Subject: Re: [FlyRotary] Re: Straight pipes --------------Boundary-00=_31EQQL80000000000000 Content-Type: Multipart/Alternative; boundary="------------Boundary-00=_41EQLVC0000000000000" --------------Boundary-00=_41EQLVC0000000000000 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Finn,=0D =0D You guys really know how to take the wind out of my sails :-)=0D =0D I am only reporting what I saw on ONE run (Its all I could stand, noise-wise). At any rate, I know it let the engine wind up more, and my indicated increased by over 20 mph. (17.3795 knots for you knot guys)=0D =0D Another note. I was definitely temperature limited at that OAT. The onl= y way to get the speed is with the cowl flap closed, and after a couple of minutes at that speed, the temp limits were hit on my engine monitor.=20 Opening the cowl flap increases drag and costs me 10-15 mph. I also have= a self-imposed max speed of 170 with the cowl flap open, after an incident early on in the testing where it tore itself off the hinges in a run at V= ne. Supporting structure has since been beefed up, but still I stick to the limit.=0D =0D Bill=0D =0D -------Original Message-------=0D =0D =0D Wow, there's some magic at work here! Maybe a 10 mph tailwind :)=0D Seriously, a linear extrapolation would put the speed at 196 mph not 206 = mph with an RPM increase from 5350 (180 mph) to 5820. Or put another way, wou= ld expect at least 6100 RPM for 206 mph.=0D =0D Finn --------------Boundary-00=_41EQLVC0000000000000 Content-Type: Text/HTML; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Finn,

You guys really know how to take the wind out of my sails :-)

I am only reporting what I saw on ONE run (Its all I could stan= d, noise-wise). At any rate, I know it let the engine wind up more,= and my indicated increased by over 20 mph. (17.3795 knots for you knot g= uys)

Another note. I was definitely temperature limited at that OAT= =2E The only way to get the speed is with the cowl flap closed, and= after a couple of minutes at that speed, the temp limits were hit on my = engine monitor. Opening the cowl flap increases drag and costs me 1= 0-15 mph. I also have a self-imposed max speed of 170 with the cowl= flap open, after an incident early on in the testing where it tore itsel= f off the hinges in a run at Vne. Supporting structure has since be= en beefed up, but still I stick to the limit.

Bill

-------Original Message-------

Wow, there's some magic at work here= ! Maybe a 10 mph tailwind :)
Seriously, a linear extrapolation w= ould put the speed at 196 mph not 206 mph with an RPM increase from 5350 = (180 mph) to 5820. Or put another way, would expect at least 6100 RPM for= 206 mph.

Finn

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