RCHQ Hobbies: Forums / RC Gear (www.rcgear.co.za) / A123 Beam E4, JGF 500th 14th . Results and thoughts

Sun Jul 05 2009, 10:05AM

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Joined: Tue Mar 25 2008, 10:09AM
Posts: 360
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Hi

Thought share my first results with you. Stuck 3s a123 2300 pack into beam, i def need to change the pinion to 15T or 16T. the hover amp is only 17 amps, and normally 25 on lipo, Head speed def down a lot, should be able todo 3D as its now, but not gonna be as much fun

For learning.. i would def recommend it!!. 3 1/2 min hover, 800 mah, so theory should get about 7 min floating about !!.

Will be doing more testing soon

Liaan

[ image disabled ]

[ Edited Tue Jul 07 2009, 05:20PM ]

____________________ ____________________ ______
Ely Q Vision 50 - OS50 SX-H - MP5-50- JR8717- Spartan - ATG (HS-82) -Reactor X 6.8v
Beam E4 stock, Just Go Fly 500th motor,A123 3s1p. INO-LAB d202mg
www.beamheli.co.za
www.rcgear.co.za

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Flatspin

Sun Jul 05 2009, 12:32PM

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Registered Member #1496
Joined: Tue Feb 12 2008, 10:19PM
Posts: 441

Nice liaan. Lipo's look like the performance champ weight vs power. and .....floating about is definately NOT what you do!

[ Edited Sun Jul 05 2009, 02:47PM ]

Hbk2 SUZEE a123 1100mah powered
Metal everything, Xtreme carbon frame
HK450 Bigbird a123 2300 powered
GAUI 200 se v2 Babybird
DX6i

Now really hating lipos after a taste of a123's
Any landing you can walk away from is a good landing !!!!!

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RC Gear

Mon Jul 06 2009, 12:37PM

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Joined: Tue Mar 25 2008, 10:09AM
Posts: 360

ok. Had second flight today.. about same outside temperature

this time let the pack run completely flat . Graph below. The voltage seems to hold up a bit better... Think need to put about 10 cycles on to really see difference. Total flying time, 6 1/2 min.

Recharge time 12 min, 30 seconds.. 2250 mah put back in.. did i mention run it flat!.

[ image disabled ]

____________________ ____________________ ______
Ely Q Vision 50 - OS50 SX-H - MP5-50- JR8717- Spartan - ATG (HS-82) -Reactor X 6.8v
Beam E4 stock, Just Go Fly 500th motor,A123 3s1p. INO-LAB d202mg
www.beamheli.co.za
www.rcgear.co.za

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RC Gear

Mon Jul 06 2009, 02:41PM

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Joined: Tue Mar 25 2008, 10:09AM
Posts: 360

3rd cycle.. shorter flight, about 6 1/2 min.. 1700mah used.. tried todo normal flying this time.. damn fig 8's are crap difficult.. good practice though

battery voltage now staying higher...

Will do some more flying this week and post the 10+ cycle report
L:
[ image disabled ]

____________________ ____________________ ______
Ely Q Vision 50 - OS50 SX-H - MP5-50- JR8717- Spartan - ATG (HS-82) -Reactor X 6.8v
Beam E4 stock, Just Go Fly 500th motor,A123 3s1p. INO-LAB d202mg
www.beamheli.co.za
www.rcgear.co.za

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RC Gear

Mon Jul 06 2009, 05:12PM

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Joined: Tue Mar 25 2008, 10:09AM
Posts: 360

ok.. had another 2 flights:

With the lower headspeed, removed expo and made things bit better.. was very sluggish compared to what used to (3500+rpm)

did some flips and rolls.. could even sustain aileron tic tocs.. will do more testing tomorrow at field.. was playing in street so not enough space to really push the limits.

L:

[ Edited Mon Jul 06 2009, 05:16PM ]

____________________ ____________________ ______
Ely Q Vision 50 - OS50 SX-H - MP5-50- JR8717- Spartan - ATG (HS-82) -Reactor X 6.8v
Beam E4 stock, Just Go Fly 500th motor,A123 3s1p. INO-LAB d202mg
www.beamheli.co.za
www.rcgear.co.za

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lloyd

Mon Jul 06 2009, 05:26PM

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Registered Member #1290
Joined: Tue Jun 05 2007, 09:47AM
Posts: 425

Interesting but can you post your specs and set up as I cant see it on the graph,print tooo small

Can post my set up with E/Tree on a mini titan just for interest sake

[ Edited Mon Jul 06 2009, 05:28PM ]

electrics dont need to AUTO

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RC Gear

Mon Jul 06 2009, 05:30PM

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Joined: Tue Mar 25 2008, 10:09AM
Posts: 360

running:
Scorpion 60A esc
Just go Fly 500TH motor with 14 T pinion
3s a123 2300 MAH lipo

Stock Beam E4. (only gravity modifications)

Would be nice if you can post.. i love Eagle tree graphs

____________________ ____________________ ______
Ely Q Vision 50 - OS50 SX-H - MP5-50- JR8717- Spartan - ATG (HS-82) -Reactor X 6.8v
Beam E4 stock, Just Go Fly 500th motor,A123 3s1p. INO-LAB d202mg
www.beamheli.co.za
www.rcgear.co.za

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lloyd

Mon Jul 06 2009, 06:54PM

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Registered Member #1290
Joined: Tue Jun 05 2007, 09:47AM
Posts: 425

Mini Titan (kasama head)
Standard motor OBL 29/35-10H
13T
90% Idle 1
Lightmax 2200mah 3s
AUW with lipo 828g

Graph spec

Amps - max 25
Watts - max 272
Rpm - max 3000

Save your graph inn jg format when down loaded from E/Tree

[ image disabled ]

[ image disabled ]

[ Edited Mon Jul 06 2009, 06:57PM ]

electrics dont need to AUTO

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RC Gear

Mon Jul 06 2009, 08:18PM

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Joined: Tue Mar 25 2008, 10:09AM
Posts: 360

lloyd wrote ...

will do but whats your graph specs.

Thanks

ooo.. that specs... you can click on graph. will load full image...

but specs:
ave amps on hover 17 amps, peak at 34A at full pitch
voltage about 12.5v ave drops to about 8.5.at peak amps.

L:

Got

____________________ ____________________ ______
Ely Q Vision 50 - OS50 SX-H - MP5-50- JR8717- Spartan - ATG (HS-82) -Reactor X 6.8v
Beam E4 stock, Just Go Fly 500th motor,A123 3s1p. INO-LAB d202mg
www.beamheli.co.za
www.rcgear.co.za

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RC Gear

Tue Jul 07 2009, 02:39PM

[ RCHQ camper ]

Joined: Tue Mar 25 2008, 10:09AM
Posts: 360

10 Cycles done... starting to get used to the baby...

Did some lazy fig 8's and some tic tocs (easy when pack fresh) and then just normal climb outs.. and piro hovers for practice.

Battery voltage keeping up much better now... seems like a123 need to be run in a bit.

Graph below.. the last spike was climb out with attempted roll... with current setup and flat pack, that was interesting say the least..... still shaking as i type

L:
[ image disabled ]

____________________ ____________________ ______
Ely Q Vision 50 - OS50 SX-H - MP5-50- JR8717- Spartan - ATG (HS-82) -Reactor X 6.8v
Beam E4 stock, Just Go Fly 500th motor,A123 3s1p. INO-LAB d202mg
www.beamheli.co.za
www.rcgear.co.za

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