Plane type

[Rcmaster199 at aol.com]

I flew the Alliance for two seasons in Masters and found it to be an 
exceptional perfrormer
. I had the wing incidence set at 1/4 degree positive, with stab at zero and 
engine as per the built in nose off sets. 

Webra 145 powered mine with a 16x14initially, and I set the pipe long, 
(conservative)
. Eventually went to more typical set-up on pipe setting and the plane  
improved in power authority. 

It sounds like you may be underpropping the L some. The L has enough beans to 
turn a 16x13N just fine. 

I set the cg at the recommended location and found that to be too nose heavy 
for me. I eventually pushed the cg back approximately 15 mm from stock, and 
everything improved. 

About the only negative on this design was the amount of "UP" mix required to 
fly a true knife edge-- about +8% both sides, and could have probably used 
+10%. The aft cg location I was using was a good compromise between overall 
flyability and the amount of UP mix to fly knife edge.
 
In terms of ability to lock in any attitude, it was one of the best I have 
flown. It's ability to hit angles with precision, and fly true up and down lines 
was outstanding. I am surprised that you are finding the plane tough to fly 
with precision. Have you gone back and re-checked all of your settings? 

Hope that helps you. Good luck

Matt K

> Date:5/29/2004 8:55:07 PM Eastern Daylight Time
> From:xavier.mouraux at sympatico.ca
> Reply-to:discussion at nsrca.org
> To:discussion at nsrca.org
> Sent from the Internet 
> 
> 
> 
> I am trying to decide which of my plane will be my primary this year. I have 
> an Alliance/140L/15x12W/25% and a Hydeout/160FX/17x13/15%. Both are just 
> under 10 lbs. 
> After practicing a few weeks with the Hydeout to start the season, I took 
> the Alliance out also to see which one feels better for me. I have now 30 
> flights with each one this year and I am still struggling with the Alliance. I 
> can't get nice straight lines (horizontal or vertical), the rolls on 45 are not 
> straight and the snaps aren't nice. When I fly the Hydeout, everything is a 
> lot better. 
> The CG of the Alliance is already moved aft of the instructions but I still 
> need a lot of elevator for inverted flight. I tried more aft but it didn't 
> fix it and I am now thinking about moving even more aft. The plane is very 
> stable at low speed and the rudder as a lot of authority. It easily loop in knife 
> edge. The elevator and ailerons also work very well. I tried a 15.5x13N and 
> a 16x10 without improvement except for better vertical with the 16x10.
> The Hydeout is more powerful and easily makes big maneuvers. The roll rate 
> going up or down looks very similar so I am assuming that the speeds are 
> similar too. The rolls on 45 are better.
> I fly the P05 in approximately the same time (around 8 min) with both 
> airplanes but with some maneuvers bigger with the Hydeout.
> Could it be that I fly the Alliance too slow ?
> Should I move the CG more aft and how far back could I move without trouble 
> ?
> Any other ideas to help me taking the better decision ?
>  
> Thanks
>  
> Xavier
> 
> 
> 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.f3a.us/pipermail/nsrca-discussion/attachments/20040529/3c76b7f3/attachment.html