Great Planes Siren Hotliner ARF Review - Page 13 - RC Groups
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Oct 31, 2007, 10:35 AM
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soholingo's Avatar
I would go 65s all around (hs81s definitely work as that's what I used)
Axi 2826/10 w/ 13x7 gives vertical performance.
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Oct 31, 2007, 10:54 AM
ROV Pilot
jijohans's Avatar
Ok..
But what FP pack? The Evo 30 3s 3200 is 152mm x 48mm x 20mm.
Oct 31, 2007, 11:33 AM
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Andy W's Avatar
That will fit, but it might be a tight squeeze unless you remove the tray. Try it and see. I am more concerned that you may not get it to balance..
..a
Oct 31, 2007, 11:42 AM
Not enough...
Hey guys! New to Rc-groups, loving it! I went and ot myself a Siren and probaably got for this setup:

Feigao 380XL 8T Kv: 2900ish
4:4:1 Planet Gearbox
Polyquest 3S 4500mah 30-50C
OEMRC Pentium 80A
Hitec HS 81īs
14X10 Cam naybee?

Weight of setup will land aroud 800grams/29 oz. To much?

Anybody have problems with the Carbon fuse disturbing the reicever/transmitter signals?

/Jonathan auf sweden
Oct 31, 2007, 01:55 PM
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Andy W's Avatar
I run my antenna outside the fuse..
..a
Nov 02, 2007, 07:13 AM
Registered User
Quote:
Originally Posted by jijohans
Jusy ordered a Siren from Tower..
Have read some threads about it and have some quick questions:
Will the FP evo 30 3S3200 pack fit?
Will Hs 85bb servos fit in the tail and wing? Or should I go for Hs65's
Thinking about using a Axi 2826/10 with a CFK 13 x 7" prop, will this give vertical performance?
Best starting point for CG?
Hello,

I use a AXI clone from UH with a Aeronaut 13x7, its very strange to mount the axi that the wires are not "rubbed" from the motor. I use two HS81MG in the wings, and a smaller one in the tail, the HS 81 is too big (also too heavy) in the tail, if you want to use it in the tail, you must cut off a lot of the carbon around the mounting hole.
The problem is for every more weight in the tail, you need a lot of more in the nose to compensate. I use a 3s lipo with 2250mah, the weight is about 170gramm, to reach the CG I've insert about 170gramm lead plus a external 5 cell receiver battery with 105 gramm.
The vertical performance ends about 30meters, so I want to try some different props next time. The speed is ok for me at the moment.
Perhaps I try 3 or 4 A123 cells in the future.

rgds
Wolfgang
Nov 02, 2007, 10:39 PM
Marx and Lennon
S_Dave's Avatar
Hello Andy,
Finally flew my Siren and it did well with the 7-cell NiMH 2200's you gave me at the CCRC swap meet. Not vertical of course, but flew nicely and for a good while. You guys are all right about the Siren floating indefinitely in ground effect. Got to enable the flaperons next time--or course, the exercise is healthy, walking a half-mile to retrieve the plane...
Cheers,
Dave
Nov 03, 2007, 07:57 AM
Registered User
Andy W's Avatar
Glad it worked well for you! Remember it's spoilerons, not flaperons (ailerons up)..
..a
Nov 03, 2007, 08:04 AM
ROV Pilot
jijohans's Avatar
What is the best starting point for CG? Some say 60mm, others 65 and others again 3", don't know what to belive..
Nov 03, 2007, 08:40 AM
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Andy W's Avatar
I know the recommended CG is off, I believe 60-65 is correct but I can't find where I posted it..
..a
Nov 03, 2007, 09:33 PM
Marx and Lennon
S_Dave's Avatar

Spoilerons and elevator mixing amount?


Andy,

Flew the "Siren" this afternoon (beautiful day) and flipped in spoilerons at 200' and wow! did it pitch down!

Do you have a baseline recommendation about how much up elevator to mix in when you activate spoilerons? Thanks!

Dave
Nov 04, 2007, 07:19 AM
Registered User
Andy W's Avatar
No, but you can start with a couple of mm and then test it up high with your Tx in programming mode so you can adjust it in-flight (it's best to have a helper.)

It sounds, however, that you're using a switch for spoilerons, which implies you've still got throttle on the left stick. If this is the case, I strongly recommend that you move the throttle to a switch - preferably a spring-loaded toggle or button - and use glider programming to have spoilerons on the left stick, so they can be dialed in gradually..
..a
Nov 07, 2007, 03:39 PM
Marx and Lennon
S_Dave's Avatar
Great suggestion, Andy, thanks!

Dave
Nov 08, 2007, 01:07 PM
Registered User
rcplanefubar's Avatar
Can anyone tell me if this would be a good combo?

Great Planes Silver Series 45A Brushless ESC 5V/2A BEC

Great Planes Rimfire 35-48-1000 Out-Runner Brushless

FlightPower LiPo 11.1V 1500mAh 25C EVO25 3S Balance
( X2 Parallel ) (so I can use them in my other planes )

Hitec HS-65HB Micro Servos

Also has anyone tried using a 2.4 radio in one of these yet ?

And I forgot. If this is a good combo what would be a good prop size for it. Thanks
Last edited by rcplanefubar; Nov 08, 2007 at 01:20 PM.
Nov 08, 2007, 05:23 PM
AMA - 734492
EricClark's Avatar
I converted mine to a sloper and use 2.4 technology.


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