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Sep 08, 2001, 09:35 PM
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Andy W's Avatar
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Falcon update - new prop, nice..


Switched the Falcon from a 12.5x10 Aernaut folder to the RFM 12.75x13.. didn't expect as drastic an improvement as this! Climbs at an extremely aggressive rate - still nothing like real F5B, but man, for an el-cheapo brushless (30/3, 8xCP1300), I am very impressed. My batteries don't like me much, but hey, they're cheap!
Anyhow - this combo is now REALLY impressive. The only drawback is lack of good break - you can't fold the prop at speed, you have to slow down for a moment at the top of your climb, then roll over/nose-down for the dive.. accelleration is very impressive - I let Jeff fly it a little - he waited until the model slowed on the up-slope before hitting full throttle - it jumped up in the sky, it was very impressive.
Dare I say it - Approved by Andy W!
By the way, don't even THINK of trying a bigger prop on the Falcon. 12.75 is the limit (wing clearance)..
..a
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Sep 08, 2001, 09:46 PM
I actually wasn't that impressed with the climb rate of 12.5x10 aeronaut folder on 8 cells. I was running RC 2000's, however, a little heavier than Andy's setup.

I guess I like the "hotliner" feel of the 10 cell 9x6.5 folder setup instead. Individual taste, I guess.

If I were to set it up again with the bigger prop, I would put the throttle on the gear switch and the spoilerons on the throttle control. As it is, with the hotliner style setup of the smaller prop, it works fine with the spoilerons setup on the flap switch and an adjustable throttle. I'm pulling less than 35 amps with this setup, and MY batteries are thrilled!

DPW
Sep 08, 2001, 10:10 PM
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Andy W's Avatar
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DPW: I was very unimpressed with the difference between 8x1250SCR and 8xCP1300SCR - the 8x1250's are in great shape, but even that little bit of extra weight (2oz or so?) made a differnce. I guess 8xCP1300 hits a 'sweet spot'..
..a
Sep 09, 2001, 01:42 AM
Hi:
I just complete the first flight of my Falcon, my setup are Jeti Phasor 30/3 direct drive areonant 11x8 prop, use 8 cells 1700SCR(larger then CP1700) and 10 cells CP1700 packs. I do enjoy the vertical climbing and speeding around. I like the heavily sensation of the 8 cells pack, but the lighter 10 cells pack is good, too. I think the direct drive system is different from the gear system. I like the smoothly power source of the gear drive could give, though powerful like the jeti, I'll try the gearbox driving next time.
Sep 09, 2001, 08:46 AM
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GregG's Avatar
Andy, that's just what I did yesterday morning. That higher priced RFM prop did wonders for my Smart as well. I went from 56-78 amps in the prop change. The vertical performance went up almost proportionately with the amp draw. However, the controller I'm using now didn't brake. I read about the grey wire and will try it out today. I still have a 14 X 14 and a 15 X 15 to try out!

WooHooo, It's finally starting to get light around here, time to go fly now!
Sep 09, 2001, 07:36 PM
Launch the drones ...
Can someone tell me the CG for the Falcon (and some suggested control throws would be great too) as mine didn't come with any instructions.

Tim Green
Sep 10, 2001, 08:55 AM
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Alan W's Avatar
Quote:
Originally posted by Andy W:
DPW: I was very unimpressed with the difference between 8x1250SCR and 8xCP1300SCR - the 8x1250's are in great shape, but even that little bit of extra weight (2oz or so?) made a differnce. I guess 8xCP1300 hits a 'sweet spot'..
..a
Andy.....Whats the weight difference between the 1250 pack and the 1300 ?? also, do you think the 1300's will take 60-70A ??

Alan W
Sep 10, 2001, 07:27 PM
Just wanted to know who sells the smaller RFM props in the 12-15" range like you guys are using.

[This message has been edited by sprocket (edited 09-10-2001).]
Sep 11, 2001, 08:37 AM
Speed Demon
GregG's Avatar
Kirk Massey at New Creations has the RFM props as well as Dieter Mahlein at ShredAir. I'm sure there are others, but I do know these suppliers have them.
Sep 11, 2001, 12:23 PM
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Andy W's Avatar
Thread OP
Neither New Creations nor Shredair carried the smaller RFM's when I ordered. I got mine from Germany directly.
They do, however, carry the more common (F5B) props.
..a
Sep 11, 2001, 02:02 PM
Speed Demon
GregG's Avatar
Dieter had some with him in San Diego at the Mid Winter Electrics in Feb of this year. I'm assuming he still carries them. I got mine from New Creations a week ago. Kirk had the 12.8" X 13", 14" X 14", and 15" X 15" in stock at that time. He may have more sizes but those were the sets we spoke about directly when I called there. Not only did these props increase my performance, they look really cool with the Carbon Fiber finish!

<img src=http://www.jps.net/cobrajet/smart/prop1.JPG>
Sep 11, 2001, 02:10 PM
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Andy W's Avatar
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Glad he has them now..
..a


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