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HomeAircraftHelicopterGasser Model RC HelicoptersOther › Which voltage regulator?
04-01-2009 09:48 PM  9 years agoPost 1
Dimitris76

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Carmel, IN

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I need to choose the voltage regulator that will supply power to the electronics on my gasser. Which BECs are you guys using on these big birds and for how many Amperes (constant/peak) does it have to be rated in order to have a good safety margin? I am doing only sport flying.
Also, a switching or a linear one (cleaner output?) do you think is better?
Finally I have many 3S Lipos from my electrics. Could I use them - with a switching BEC of course - or is it necessary to buy new 2S packs?

Thanks,
Dimitris

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04-01-2009 10:52 PM  9 years agoPost 2
TaleGunner

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Deer Park WA

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I run a 5cell Nmh 2200Mah no regulator and a Jewel Generator on my Gasser this is the most efficiant system and with the generator I never charge the battery just fly.

CRASH! GLUE! REPEAT!
Spectra-G, Ion X-2

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04-02-2009 01:59 AM  9 years agoPost 3
zorba

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Montreal, Quebec, Canada

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thanks for the reply Talegunner. I use the Duralite on my nitro helis.
I just want a more simple solution. I was thinking of using the Align RCE-B6X regulator.
The only prob is the output is 5.8v.
Any suggestions?
On my predator I run a 4cell Nimh 4500 Mah with the jewel.

Cheers
Bill

3-450's,rex500ESP,rex600G,Rex700G,Raptor60G,FreyaCW-EXII, VarioEC155, Logo20, Cessna310,CL-415,

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04-02-2009 02:07 AM  9 years agoPost 4
TaleGunner

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Deer Park WA

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I'm not sure about the Aligm regulator I haven't had good luck with them and digital servos. I do like the Duralite I use there 6v ver with a 2 s lipo on my Ion X2 works very well but only 3-4 flights before recharge. Although I haven't had the Jewel for long I'm already sold on the system.

CRASH! GLUE! REPEAT!
Spectra-G, Ion X-2

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04-02-2009 02:40 AM  9 years agoPost 5
zorba

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Montreal, Quebec, Canada

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Thanks for the info. I guess another jewel is on the way.
I was trying to avoid spending another 200 bucks but I guess I have too.

Cheers

3-450's,rex500ESP,rex600G,Rex700G,Raptor60G,FreyaCW-EXII, VarioEC155, Logo20, Cessna310,CL-415,

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04-02-2009 02:56 AM  9 years agoPost 6
TaleGunner

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Deer Park WA

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Its sorta like having a backup power system with the jewel. I went to the 6v pack and Raja sent me a higher voltage regulator for the 5 cell pack. he also said he is getting some even higher voltage units for use with a 2s lipo.

CRASH! GLUE! REPEAT!
Spectra-G, Ion X-2

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04-02-2009 03:55 AM  9 years agoPost 7
thelane

rrVeteran

Edmonton, Alberta Canada

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You could just use a 5 cell NiHM pack somewhere around 3000 mah and a step-down to your tail servo. You can buy 2-3 packs and they charge quickly too. Get a voltwatch or something to see the status of the pack after each flight.

JR Vibe 50 and DX7

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04-02-2009 11:52 AM  9 years agoPost 8
Dimitris76

rrApprentice

Carmel, IN

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So, I have two options:
NiMH and on board Generator without obligatory regulator OR LiPos with regulator, right?

For how many Amps are your regulators rated?

And how many mAh are enough for a Gasser's battery? I see that battery pack's capacity is variating alot - others are using 4500mA and others just 2000mA...

I would like to use a generator late on too.
Is there any circuit out there that disconnects the Lipo and charges it via the balancing cable while the generator is producing enough juice and reconnect it via the discharging lead when the engine idles/turns off?

Dimitris

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04-02-2009 11:59 AM  9 years agoPost 9
copperclad

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NY

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...

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04-02-2009 06:16 PM  9 years agoPost 10
Dimitris76

rrApprentice

Carmel, IN

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Copperclad,

I've read long ago your generator building thread - the one the QWW heli. I have put a belted generator almost 10 years ago on a IC beach buggy I had just for the fun of it. It worked quite well until the belt snapped...
I think I'll build a similar setup for my gasser.
Is anybody interested on a all-in-one on board 3-phase rectifier/regulator/BEC/2s-3s Lipo balancer-charger-switcher?

Dimitris

PS: Does anybody know how much current do 4 analog servos, a digital on the throttle and a 401 gyro usually draw under load on a gasser?

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