Mailing List flyrotary@lancaironline.net Message #46580
From: Bobby J. Hughes <bhughes@qnsi.net>
Subject: RE: [FlyRotary] Re: 88HP vice 130 HP. [FlyRotary] Re: 295cc vs 495 cc Renesis Test[FlyRotary]
Date: Wed, 24 Jun 2009 16:12:10 -0600
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
The prop controller should hold the prop at whatever rpm it's set for. It's just very slow. I have to advance the throttle very slowly even after the wheels are off the ground. Makes for a long and slower climb out. The renesis should produce around 212 hp at 7000 rpm naturally aspired. No reason to run it any harder.
 
Bobby


From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Bill Bradburry
Sent: Wednesday, June 24, 2009 2:59 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: 88HP vice 130 HP. [FlyRotary] Re: 295cc vs 495 cc Renesis Test[FlyRotary]

Can’t you set it to a higher rpm??  8K is not supposed to hurt the Renesis with the lighter rotors, etc.

 

Bill B 

 


From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Bobby J. Hughes
Sent: Wednesday, June 24, 2009 5:55 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: 88HP vice 130 HP. [FlyRotary] Re: 295cc vs 495 cc Renesis Test[FlyRotary]

Tracy's rev limiter works. Problem is staying away from it on take-off with the MT electric prop.

 

Bobby

 


From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Bill Bradburry
Sent: Wednesday, June 24, 2009 2:35 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: 88HP vice 130 HP. [FlyRotary] Re: 295cc vs 495 cc Renesis Test[FlyRotary]

Dennis,

I don’t think that doubling thing is supposed to happen except for the fuel flow thru the other set of injectors.  I certainly could be wrong tho.  I don’t know what would happen to mine above 7500 rpm because I couldn’t get there if I threw it off a cliff!  :>)

 

You lost me with the 540 CC secondaries thing at the bottom.  Did you mean 840 CC??  Your intake was similar to mine.  What did you do to change it?

 

What is full static power?

 

Bill B 

 


From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Dennis Haverlah
Sent: Wednesday, June 24, 2009 3:57 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: 88HP vice 130 HP. [FlyRotary] Re: 295cc vs 495 cc Renesis Test[FlyRotary]



I agree that my Renesis engine was only producing about 70-80 HP on the small red primaries.  When I run only on the primaries with the secondaries off and the
cold start line grounded my EM-2  tach RPM doubles - 4000 RPM shows up as 8000!    My fuel flow numbers and HP numbers appear also to be doubled!!   The 140 HP probably was actually 70 HP!   However - when I operate with the primaries off and the secondaries on the RPM and other data is not doubled!!  Somewhere above 7500 RPM the RPM number on the EM-2 goes to Zero (0).    Is  this due to the rev. limiter Tracy may have included?  If so - does it control engine speed by disabling  the secondaries?

After the fatality several years ago because an apparent injector may have been disabled by foreign matter, I was determined to have duel injectors and ignition for each rotor.  This morning I replaced the Renesis red 295 cc primary injectors with blue Renesis 495 cc injectors.

When running with the secondaries on  (540  cc I believe) and the primaries off I get full static power.   Because I've changed intake and injectors I will need some time to calibrate fuel flow before I can accurately report static fuel flow numbers. 

Dennis H.

  
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