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HelicopterMain Discussion › Reducing the internal resistance of LiPos
05-07-2017 12:47 AM  6 months agoPost 261
JuanRodriguez

rrProfessor

The Villages,​Florida

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Why are you so reluctant to do what people that know what they are talking about are suggesting??

EEngineer suggested the use of a resistor way back and you ignored the suggestion.

Now AirWolf is suggesting the same thing and you're ignoring his suggestions as well .....

Been there, done that and old enough to know better.....

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05-07-2017 12:48 AM  6 months agoPost 262
AirWolfRC

rrProfessor

42½ N, 83½ W

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If your expected run time in service is 30 to 40 minutes on a 3AH pack then the results will be meaningful (5 amps from a 3AH pack - - the discharge limit of your charger).

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05-07-2017 01:00 AM  6 months agoPost 263
heliraptor10

rrKey Veteran

kokomo, in-US

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Juan

AirWolfRC is suggesting a resistor for discharge.

EE wanted me to use one in charging to increase the EMF.

And I am not ignoring anyone.

I am trying to get a consistent opinion on what data would be meaningful.

Goblin! where have you been all my life?
RC helis, the original fidget spinners

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05-07-2017 06:33 AM  6 months agoPost 264
EEngineer

rrProfessor

TX

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"EE wanted me to use one in charging to increase the EMF."

You commented that your charger was operating erratically at ~ 5A....

I suggested that you separate your coil current from your charging current....by using a resister in series with the coil...so your charger operates properly....without having that load imbalance.

Also, you could vary the coil current(varying the magnetic field)...independent of your charge rate.

At that point, you were "into" charging....

Now, you've changed to discharging....

Logo 600SXs, 800XX, TDR IIs

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05-07-2017 07:53 AM  6 months agoPost 265
heliraptor10

rrKey Veteran

kokomo, in-US

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And I explained that the power supply is at fault.

The Instability at 5 amps is independent of the coil.

Are we all having fun repeating ourselves?

Goblin! where have you been all my life?
RC helis, the original fidget spinners

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06-14-2017 05:08 PM  5 months agoPost 266
heliraptor10

rrKey Veteran

kokomo, in-US

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I haven't given up on this as of yet.

Went a few rounds with a 4mm kidney stone.

Gonna have to start over with 2 new test subjects. Despite having explained to everyone that lipos are ruined by being drained all the way, and despite having a battery alarm hooked up, they decided to keep running the power wheels till it died.

So my A and B batteries are toast.

Goblin! where have you been all my life?
RC helis, the original fidget spinners

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06-14-2017 05:13 PM  5 months agoPost 267
EEngineer

rrProfessor

TX

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Ooooo...man....hope you're ok...

No rush...take your time...

Logo 600SXs, 800XX, TDR IIs

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07-24-2017 08:24 PM  3 months agoPost 268
heliraptor10

rrKey Veteran

kokomo, in-US

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Ok-ish...

They found cancer while they were poking around in my bladder. They say they got it all and not to worry, but I also have to go back in 4 months to have a camera shoved up my **** again. So....

And of course all the wonderful opiates and antibiotics they put me on screwed my already troublesome gut. And despite it having been over a month since, I'm still dealing with it.

I'm still working on things,
I'm sorry to those of you waiting for more info, still in the works.

Got my fingers crossed I'm gonna feel up to going to IRCHA.

It's a shame to miss It when I'm just a bit away.

Goblin! where have you been all my life?
RC helis, the original fidget spinners

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07-24-2017 09:41 PM  3 months agoPost 269
EEngineer

rrProfessor

TX

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Get well fast....

Logo 600SXs, 800XX, TDR IIs

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HelicopterMain Discussion › Reducing the internal resistance of LiPos
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