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Miniature Aircraft Nitro/Gas Helicopters > YS or OS .61 for Fury on 20% Nitro????
 
 
Optech
Key Veteran
Location: Vista/Oceanside, CA.

I've decided to get a Fury. I've worked some serious hours lately and can justify it. I am wanting to fly AMA class I or II "FAI" type flying and have been practicing with my PHI Tornado II. However, I just don't think the PHI is as precise as a newer ship could be. My choices were an X-cell CT, or the Freya and maybe the Fury (which I've always wanted anyway). After talking with both Min Air and Ron Lund I've made my decision. The question now is which engine????

I normally run 20% nitro/20% oil type fuel in all my birds but I've been using 30% in the PHI....basically because the Enya needs all the power boost it can get. The problem is that I can now see right away that 30% might become pretty cost prohibitive. I was wondering which engine/muffler combo would be a better choice as far as ease of use and power output on 20%/20 fuel. My first choice of engine is the YS .61 on the Dave Shadel muffler. The other would be the OS WC on a Curtis Muscle Pipe.

Any Ideas you all??? Pros, Cons???

Thanks,
Mike

Viva La Airtronics!
03-13-2002 Over year old.
 
 
Dr.Ben
Elite Veteran
Location: Richmond, VA, USA

Given Gordie's power experience with the Shadel muffler, there will likely be enough power for even Class III with 20 % nitro. I know of few other contest pilots besides Curtis who can appropriately hover a model in a contest at or above the 1700 rpm the the Muscle Pipe will require. Don't go there. Muffler on each, the STII will likely outpull the SXWC; it's no accident that 80-90% of contest pilots use YS motors. And it isn't about sponsorship, either.

The only things you need to do to that Fury to make it contest worthy are get the paddles and weights that David suggested, a decent set of blades, and a good contest set up in the model. Both of my Furys are built and prepared for contest use.


Ben
03-13-2002 Over year old.
 
 
Optech
Key Veteran
Location: Vista/Oceanside, CA.

Thanks for the info guys. I really appreciate it. Looks like the YS/Shadel is it.The fact that it follows what I want to do is icing on the cake!

As for set-up;

I've currently got a pair of 680 SAB "FAI" blades to use ( I haven't tried them on yet). These are the semis with the washout in them. I was also thinking of getting a set of V-blades and trying them out. Right now I have some cheapie fiberglass symmetricals.

As for paddles, I was looking at the Freya paddles with the easily adjustable weights. Would these work???

Thanks again,
Mike

Viva La Airtronics!
03-13-2002 Over year old.
 
 
z11355
rrMaster
Location: 10000 is enough time wasted.

the freya paddles will work on any 4mm flybar. I have a friend
running them on Robbe's and XL's.
03-13-2002 Over year old.
HOMEPAGE  
 
 
Dr.Ben
Elite Veteran
Location: Richmond, VA, USA

The Freya paddles are a cool design from a quick change of weight standpoint. I know of one contest pilot who commented that he was not pleased with the hover performance because the leading edge profile of the paddle tended to be a little to jumpy around center stick for precise hovering work. You could still try a set for yourself. Weight them up to about 40g. Try some very precise hovering in all wind conditions and see if the paddles tend to exaggerate your subtle inputs, particularly when headed straight into the wind. If they feel OK to you, go with them. If not, go with the MA ProII paddles, some SAB paddles, or even KSJ contest paddles if you have money to burn.

Curtis can make V blades work for contest use, and the winners of the other classes at the Nats last year did, too. I flew against Chip Hyde. He was flying the V blades. He worked well around the deficits of the blades. I would have hated to see how well he would have done if could have settled the model down a little more in hover with less head speed and gained about 15-20 mph more upstairs. From our observation, the V blades fail to produce as high a FF speed as some of the more specific contest blades. Entry speed is critical to get an acceptable upline far stall and rolling stall turn maneuvers. The hovering performance in the wind seemed good, but the head speed required to make the blades hover well was greater than many folks would prefer to run (1550 rpm +). If you really milk a 180 d. CONTEST auto to the ground, you best be ready to take it straight to the spot. I watched pilots using those blades several times try to milk the auto further. The blades tended to dump lift in very sudden fashion just before touch down. The comments were coming from the likes of Cliff Hiatt and Dwight Shilling and Wayne Mann. I tend to listen to what those guys say about contest blade choice.

If you'd like to get a set of less pricey blades to play with, find a set of Gamma/ MA 700mm FAI semis. You'll pay well under $100 for them, and they are a darn good blade.

Ben
03-14-2002 Over year old.
 
 
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Miniature Aircraft Nitro/Gas Helicopters > YS or OS .61 for Fury on 20% Nitro????
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