Clipped, Electric weight, E-Impact first flights

[rcaerobob at cox.net]

Who told you, Bill ?  I want names.... dates.... PROOF...
<VBG>

Bob P.
> 
> From: Bill Glaze <billglaze at triad.rr.com>
> Date: 2005/06/14 Tue AM 11:47:06 EDT
> To: discussion at nsrca.org
> Subject: Re: Clipped, Electric weight, E-Impact first flights
> 
> Or like a boxcar with 2 flat wheels........................... :-P Bill 
> Glaze
> 
> rcaerobob at cox.net wrote:
> 
> >THAT's an easy one, Jim.  Most of my airplanes DO "fly like Trucks", or buses, or ....
> >  
> >
> >>From: Jim_Woodward at beaerospace.com
> >>Date: 2005/06/14 Tue AM 09:48:03 EDT
> >>To: discussion at nsrca.org
> >>Subject: Re: Clipped, Electric weight, E-Impact first flights
> >>
> >>Hi Lance, 
> >>
> >>I'll just say one thing that has stuck with me -  which is my analogy to a 
> >>lot of themes which I can't remember word for word.  If your plane doesn't 
> >>drive lines with a stability or determination reminiscent of a freight 
> >>train or loaded diesel truck, your plane is not flying as well as it can. 
> >>
> >>Jim W.
> >>
> >>
> >>
> >>
> >>
> >>patterndude at comcast.net 
> >>Sent by: discussion-request at nsrca.org
> >>06/13/2005 05:11 PM
> >>Please respond to
> >>discussion at nsrca.org
> >>
> >>
> >>To
> >>discussion at nsrca.org
> >>cc
> >>
> >>Subject
> >>Re: Clipped, Electric weight, E-Impact first flights
> >>
> >>
> >>
> >>
> >>
> >>
> >>Excellent post.  so what did Tony F say about trimming that you can apply 
> >>to all planes?
> >>--Lance
> >> 
> >>--
> >>District 6 AVP 
> >>www.aeroslave.com
> >> 
> >>-------------- Original message -------------- 
> >>
> >>(2nd attempt) 
> >>Jim O., 
> >>
> >>I'm not sure what gear box I have, as I'm not really familiar with the 
> >>previous Hacker motors.  I do see some bolt heads on the back of the 
> >>motor, which would suggest to me that they run through the motor and into 
> >>the gear box in the front.  At the front of the gear box, all you see is 
> >>the bearing with the actual receiving holes for the motor-mounting screws. 
> >>  
> >>
> >>I flew the Impact 4 flights this weekend.  I did this while flying my 
> >>Aggressor, and breaking in a new OS 140 RX.  It was one of the funnest, 
> >>BEST pattern day's I've ever had.  I flew the E-Impact and immediately 
> >>liked the power and speed control (and ease).  The Impact itself, didn't 
> >>jump off the board as a perfectly trimmed plane, so I knew I had a little 
> >>work to do.  After the first flight, the concept was DEFINITELY proven, 
> >>and I quickly deduced that I need more batteries (first flight was 
> >>Saturday evening).  After this first flight (with John B. from Surinam 
> >>watching), we determined the need to paint the bottom of the wings and 
> >>canopy.  We ran to Lowes and bought some florescent red/orange to paint 
> >>the stab and wing tips, and we also painted the canopy metallic silver. 
> >>Also determined that the plane was tail heavy quite a bit.  Anyone 
> >>familiar with the Impact thread on RCU knows exactly what I'm talking 
> >>about in regards to the Impact.   
> >>
> >>Sunday morning with CG moved forward, the plane flew better and the small 
> >>amount of color we put on the plane definitely made a huge difference. 
> >>After this second flight, also determined that the CG was still too far 
> >>aft, and that the battery needed to be moved forward (at this point, knife 
> >>edge needed no mixing), and the plane was carrying a small amount of 
> >>aileron trim.   
> >>
> >>Then, I flew the Aggressor for the first flight with the OS 140 RX and 
> >>17x10 APC.  With th 17x10, the OS was nearly "super-sonic" compared to the 
> >>Impact, however immediately, the Aggressor's trimmed status and 
> >>"locked-on" look/feel was evident (as anyone who has seen the plane fly in 
> >>D3 would attest to.  Due to charging time of the E-Impact, I swapped props 
> >>to the Mez 18x10, adjusted the throttle curve, and started moving the 
> >>speed envelope of the Aggressor down to match the Impact in a couple more 
> >>flights.  My first thought was that if I had the E-setup in the Aggressor, 
> >>it would be an unstoppable machine!  (Aggressor weight without fuel is 10 
> >>lbs 13 oz). 
> >>
> >>Time for another flight on the Impact.  I flew through PO5 this time, and 
> >>started getting used to the E-power curve, some rates, etc.  The forward 
> >>CG move started to pay off, and the plane was drawing better lines (but 
> >>still not like my glow plane, which is understandable as this was only the 
> >>third flight on the model). After this flight, again, decided the CG 
> >>needed to go MORE forward.  Also, we determined that the right wing tip 
> >>needed about 14 grams of weight to laterally balance the model (a step I 
> >>did not do in the garage, we added the tip weight at the field). 
> >>
> >>Back to the Aggressor:  I flew two more flight back to back on the 
> >>Aggressor, each time improving the throttle curve to make it easier to 
> >>match the envelop of the Impact.  The OS ran perfect, and I'm sad that 
> >>after 5 years of screwing with other engines, to have not just spent the 
> >>little bit of extra money and ran the OS all along.  Through each flight 
> >>(90 degrees, 90% humidity), the OS ran superb.  Inflight throttling was 
> >>great, you could tell the motor was not getting hot, and it was making 
> >>ridiculous vertical power.  (by the way, this was on an OS A5 plug, C.P. 
> >>25% pro-pattern, and ES pipe).  The OS runs VERY smooth with a crazy low 
> >>idle.  I'm VERY happy with how it ran - not a single dead stick through 
> >>its first 5 flights - nothing but awesome performance.  The locked in 
> >>(trimmed) status of the Aggressor, now flying in the slower speed 
> >>enveloped, had convinced John that this was still the "ticket" as compared 
> >>to where the Impact was after 3 flights. 
> >>
> >>Back to the E-Impact!!!!!!!!!!  For this flight, the 6000 Pro-Lite T.P. 
> >>battery was moved as far forward as possible (just behind motor).  This 
> >>flight showed some incredible potential.  In this CG config., the Impact 
> >>was driving lines similar to the Aggressor (up, down, 45's, etc), and 
> >>rolling VERY well.  Also, the wing tip weight on the right wing made EVERY 
> >>SINGLE MANEUVER look better.  The wings were much more locked on, the 
> >>plane rolled better, exited snaps better, spinned better.  This was a 
> >>great trimming lesson to me, as the day was getting cross-windy (worse) 
> >>through out the day as the ruminants of the tropical storm passed through, 
> >>however in the worsening conditions, this was the BEST of the flights.. 
> >>After this flight, John immediately was convinced that this was indeed 
> >>going to be a solid backup or first plane for the nats.  I'm still going 
> >>to move the receiver battery forward now though, and probably make a 
> >>lighter rudder (which wouldn't hurt things anyway).  (hacker controller 
> >>has 3 degrees timing). 
> >>
> >>Charging:  I alternated by charging from the car battery, then letting the 
> >>car idle for the next charge (guess what - no big deal to do this if 
> >>necessary).  However my limitation is that I only have one Astro 109 as 
> >>the second one has not arrived yet.  Thus, instead of 45 minute turnaround 
> >>times, I was 1.5 hrs between flights. 
> >>
> >>Impact:  I followed some RCU advice and started with a CG on the center of 
> >>the wing tube, without wings on.  This is in serious error.  However, the 
> >>plane will dive mildly when in inverted flight, and it gives the 
> >>impression through simple tests that the CG is correct.  With this CG, the 
> >>plane flys off the tail.  In radius, the tails squats and the plane will 
> >>fly tail low.  After I was done with it, the plane was following the nose, 
> >>driving excellent lines, similar to the Aggressor (still thanking Tony F. 
> >>for the trimming help on my Lazulite,which has now gone into all my 
> >>planes!). 
> >>
> >>Glow / Electric:  In a quick comparison, a trimmed plane is what you need. 
> >> Electric power itself will help with presentation and probably hide some 
> >>airplane tendencies (if bad), due to the smaller speed envelope. Although, 
> >>the power and the plane are working together, they are still a bit 
> >>separate.  I guess I'm trying to say that a poorly trimmed plane is going 
> >>to hurt you no matter what motor you have in it.  I'm guessing purely 
> >>guessing now though, that if two identical planes, both completely 
> >>trimmed, were equipped with glow and electric, that the E-setup would take 
> >>the cake as it would allow more of a "show-casing" of the maneuver set. 
> >>More to follow......... 
> >>
> >>Thanks, welcome questions, comments, public or private. 
> >>
> >>Jim W. 
> >>
> >>
> >>
> >>    
> >>
> >
> >Bob Pastorello, El Reno, OK, USA
> >rcaerobob at cox.net
> >www.rcaerobats.net
> >
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> >  
> >
> 
> 

Bob Pastorello, El Reno, OK, USA
rcaerobob at cox.net
www.rcaerobats.net

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