sparky925

My Feedback: (1)

OK all, i am doing a little research for myself for my next 2 meter ship to be electric.

Please post your setups: motor, polys, speed controllers

Also add your preferred and tested props with rpm and current.

Thanks in advance.

Rombaut

Hello Sparky.
My opinion is copy the Top pilots in F3A ( Matt's, Janson Shulman...) . In my case I have put in my airplanes the Hacker 14XL competition with the speed controler : Acro 90 0 competition and with TP 5300. The propeller that use habitually is 22 x 12 obtaining very good results.
What airplane you wish to electrify?

Regards

woodie

Currently I am flying a Piedmont Brio, with TP 5300s, AXi 5330/F3A, Jeti 90 Acro. Approximately 120 flights with no motor, esc, battery problems. I prefer the APC 21x13 electric prop. I recently tested the setup with an onboard recorder and got the following performance figures for static and airborne WOT .
_ _ _ Static Airborne
RPM - 6040 6510
Amps 76 78

Don A

can773

My Feedback: (1)

Plettenberg 30-10 Evo, Schulze 32.80KA, TP 10s 5300's. - Either an APC 21x13W or 20x15 - RPM static - 6350-6400 - Amps 75 - both props are very similar in rpm/load, 20x15 has more speed and power.

Same setup with the new 5000 Extremes - 6500-6600 RPM static - 80A

Either setup in flight is around 70-75A max usually, dont know the in flight rpm.

Angus Balfour

Does that Schulze speed controller have any advantages over the Jeti advance 90 plus controller or the Castle Creations Phoenix 85 HV speed controller Chad?

Cheers,

Angus

Stuart Chale

I use the standard Hacker 14 XL and speed contoller with the Falcon F3A batteries. No issues and plenty of power. 11 pound fueled up
Stuart

marzini

hi my set up genesis 3d

cyclone f3a
apc 20x13 at 6500 rpm
haker masetr o 90acro speed controller
tp 5000 extreme series

at full trotle 78amp

klhoard

My Feedback: (10)

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Anyone using the new A123 (M1) cells?
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sparky925

My Feedback: (1)

ok , so what is the status on the dreaded CC firmware large outrunner screach?
Is that worked out yet?

Dean Pappas

Hi Sparky,
I never have an issue with my AXI 5330/18 and 18-12E running ~ 84A with a full battery, and close to 75A after a full P-07 flight.
I run the version 1.2.3 code.
Dean Pappas

jfetter

Might as well kick this thread and see if it breathes. I am building a C-ARF Impact and plan on putting the following components in it after seeing just how great they perform in my new Hanger 9 Sundowner F1;

Axi 5330/F3A
2 x EVO 5000 6S2P is series (12S)
Jeti Spin 99
Mejzlik 20 x 12E Composite

The following WhattMeter and RPM numbers are from bench tests on my Sundowner with the same setup;

3,650 Watts
81.5 Amps
7,110 RPM

Firing this thing up was almost frightening, it felt like it was going to tear the engine and Budd Engineering softmount right off the firewall!

Jack

sparky925

My Feedback: (1)

well that sundowner setup sounds good, but your running 12S?
I thought you couldnt run more that 10S in AMA Pattern?

Barye

My Feedback: (27)

I don't think the Sundowner F-1 is a pattern plane.

rmh

I get the distinct feeling that the "serious?" flyers do not consider these cells as viable
really strange, as my Diamante and my little 300 extra both fly long n hard on 4 a123 cells
in watching and comparing same size models with lipos -my setup is as good or better than typical setups and one hell of a lot less money and much esier to use .
IF--I go for a 2x2 setup -it will be with these cells

Adamg-RCU

Dick, I think that has a lot to do with the horrendous availability of the a123 cell. The fact that buying dewalt cordless tool batteries, breaking them apart, breaking apart the battery assembled inside, and then assembling your own battery, is the standard method of obtaining an a123 pack is a joke. It's literally like A123 doesn't want pilots to use their cells.

rmh

Yes -they are not available thru most model channels but Horizon Hobbies is no w stocking them
buying from the EBay source and pulling em from the pack is quite acceptable to me

gene webber

My Feedback: (3)

OK Guys, if you use the A123 cells for a 2 meter aircraft what configuration do you need? It seems as though the voltage and some other parameters are different. Can you guys explain the differences pro and con using a big picture scenario, for example bang for the buck, weight, charge method, electrical charge/discharge benefits,etc?

Trying to get a handle on this electric power application thing.....

Thanks,

Gene

Adamg-RCU

Along with availability, the other issue is energy density. What weight A123 pack holds the same energy as a 10s 4000 lipo (4000 being pretty much the bare minimum)?

Derek.Koopowitz

There is no rule that says you can't run more than 10s in AMA pattern... there will be a rule in FAI for 2009/2010 that limits voltage.

Troy Newman

There is already a rule in F3A that limits voltage to 42V no load voltage. This is not new in 2009 its been there for many years.

rmh

The lipo users who have not done direct -in use comparisons of the 123 cells get a skewed picture
they are heavier -no doubt - except for that they beat the LiPos as you can hammer the sh it out of em clear down to 2 v with no harm
my 4 cell pack is 13 v + charged an blipped a few times then hit with 40 amps stays at 11 volts for a while
I had the friggen 2070 cells and gave em away-
10 cells is 25 ozs and 33 volts
I don't expect these will appeal to sponsered flyers who really don't give a rat's ask about cell life / safety (not all you guys )
but I am really stoked on em - easy to use hammer em on charge - hammer em in flight - no problems.
I use Lipo on my wee stuf -- of course .

flyf3a

Hi

The 2008 to 2011 FAI rules for F3A states the following:

Maximum overall span 2 000mm
Maximum overall length 2 000mm
Maximum total dry weight, with batteries 5 000g
A tolerance of 1% to be allowed for all above measurements.

Power Propulsion source limitations: Electric-powered model aircraft are limited to a maximum of 42.56 volts for the propulsion circuit, measured less load, and prior to flight while the competitor is in the ready box.

Burt

Anthony-RCU

My Feedback: (2)

[quote]ORIGINAL: dick Hanson


10 cells is 25 ozs and 33 volts



Hmmm. So 12 cells would be around 30 oz and 39 volts and I can hammer nails with my packs. Sounds pretty appealling.

rmh

yeh -the cells are actually rated at 3.6 v apiece - in real world the .3 v is instantly skimmed off when you first use a freshly chaged pack 12x3.6=43.2 - but if anyone measures that pack - hooked up in the model - they won't see 43.2 it will be less.
Forget the "theory" --in actual practice I never see 3.6 except at end of fresh charge.
3.5 would give 42 volts n' there you go

OhD

Dick,

What is the Watt-Hrs per pound? I suspect that is their shortcoming.

Jim O