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Scorpion Power Thunder Power RC
LaDon

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Fort Dodge .Ia

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And jeez I did not say you were wrong about the heat part either

My whole point was the IR bit and that was it

Team Jr

08-25-2016 06:50 PM
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Ace Dude

rrProfessor

USA

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Battery University didn't say anything about having a little heat in it. They just said the performance of the pack will be better after resting. Obviously you could warm the pack a little. You car runs better with a little heat in it too
This is well known and easily verifiable. Just measure the IR of the same pack when it's warm and when it's cool. IR is highly temperature dependent.

  

08-25-2016 07:11 PM
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Richardmid1

rrProfessor

Leeds, England

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Anyway....
. I am a sport flier only. What difference would I see flying a circuit with a 30c lipo 5000mah and than follow with a 50c 5000mah lipo. Both the same brand.
None whatsoever.

60% of the time, it works every time!

08-25-2016 08:03 PM
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Ace Dude

rrProfessor

USA

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I forgot I had posted this graph showing IR vs. temperature in another thread here on RR a while back.

  

08-25-2016 08:18 PM
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LaDon

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Fort Dodge .Ia

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Richard for you prolly none. But not everyone flies just like that.

Ace dude nice graph. Good info

Team Jr

08-25-2016 08:56 PM
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Four Stroker

Elite Veteran

Atlanta

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The ALGORITHM for measuring the IR will have a lot to do with the value reported from your charger.

08-25-2016 09:22 PM
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Richardmid1

rrProfessor

Leeds, England

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. Richard for you prolly none. But not everyone flies just like that.
See me on the top step of that podium at UK 3d championship? I didn't get there by flying circuits!

60% of the time, it works every time!

08-25-2016 09:59 PM
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LaDon

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Fort Dodge .Ia

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No I didn't see anyone with the name Richard on the podium

Ah I see now the webpage only went to last year. Still bottom line is Richard I am glad the turnigy bats are working to your satisfaction. We have a guy here that loves them too. Really when it all comes down to it the bottom line is as long as you are happy. Dosent mean I have to be happy using the same thing as you

Team Jr

08-26-2016 12:44 AM
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Richardmid1

rrProfessor

Leeds, England

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OK, that's fine. All im saying is the packs you use won't be what they claim on the sticker and judging a pack by it's C rating is not the best tactic.

60% of the time, it works every time!

08-26-2016 07:54 AM
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Heli_Splatter

Key Veteran

Silver Spring, MD by way of Sidney, Ne - USA

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I have been flying the high voltage Bolt batteries (4.35v, 5000mhr) for some time now. I know they are sold by Hobby King... oh boo hiss(pack sand). I have had some fantastic flights with them... I am certainly not a rock-star pilot(more of a rock than a star), but I know what is working for me. No, not for a minute do I believe the 65-130c rating of the battery.

I know that I can buy much cheaper batteries from the same website. These batteries will work on 4 aircraft that I own.

First Flight New Trex800

Watch at YouTube

08-26-2016 12:28 PM
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Ace Dude

rrProfessor

USA

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12s 5000 in a 700 will be under the same load as a 6s 5000 in a 550-600 assuming they are flown the same
Another myth im afraid. A 6s 5000mah pack heli will put the same strain on the cells as a 12s 2500mah pack heli so the same C rating will be needed in both.
Hi Richardmid1, Can you share with us the values you used for I, E, and R in your statements above and how you applied them to Ohm's Law?

  

08-26-2016 02:13 PM
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Richardmid1

rrProfessor

Leeds, England

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Hi Richardmid1, Can you share with us the values you used for I, E, and R in your statements above and how you applied them to Ohm's Law?
No.

The statements you quoted from me are correct (without splitting hairs) and you know they are.

60% of the time, it works every time!

08-26-2016 02:33 PM
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Ace Dude

rrProfessor

USA

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No.
Why not? Are you saying Ohm's Law is wrong or it doesn't apply? If it doesn't apply, what equations would you apply?

  

08-26-2016 02:43 PM
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Richardmid1

rrProfessor

Leeds, England

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Of course Ohm's law is not wrong!! Stop trying to make trouble.

60% of the time, it works every time!

08-26-2016 02:53 PM
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LaDon

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Fort Dodge .Ia

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Heli splatter I have alway been interested in the high voltage packs. I just haven't looked into them enough to completely understand what all I have to do to run them and charge them. You should do a review on them with as much important info as you can put in there

Ok Richard as far as you go here these are the facts of this thread

#1. You posted a video about c rating testing. Fact the guy said he was an independent tester so he is not employee of opti power and at 45 seconds left in the video he stated he tests the pack sizes for opti power and they don't get the sticker unless they make the rating. Well since opti power makes 50c pack one would have to think he has tested them too with that statement. Sure no video I suppose he could be lying but if so bad for business plus him lying gains nothing for him. Yes it would be nice to see him make one. Maybe we can find him and have him do it.

#2. I have not seen anyone post anywhere that they totally believe the c rating. Sure I did post what a friend found but that is not a super good test as it won't be continuious but he like you said no battery could go over 30c period. He himself proved that wrong there to himself. IHe tho like me don't really believe the super c ratings

#3. Fact even if the higher c pack doesn't put out the total c rating they advertise the good packs and higher c packs come down cooler. It is a fact that high heat kills packs, esc's, and motors whether you want to admit that or not. This fact is very easy to figure out as it is a simple test of flying them as much the same as the other packs and feeling the difference or using a temp gun and measuring. Pretty simple.

#4. Fact even tho I have to take a website's word for it I really do think this part is true is that charge IR is higher than discharge IR. 2 things make be believe this part. 1 it is almost always easier to empty something than it is to fill it. You know like putting clothes in a bag or washing machine or blowing up a balloon and getting the air out. Just examples but you know what I am getting at I hope. And 2 I would be willing to bet none of us have the equipment to prove them wrong including me or Richard. Our chargers as far as I know don't tell that but I am gonna check it out tho.

# 5. Fact Richard has proved nothing. He don't know every batteries IR. He don't have my packs IR so what it boils down to he has no facts to back his claim completely. IR of his turnigy pack is not the same as every other manufacturers packs out there. And once again no discharge IR numbers. Rambling on proves nothing. Also what has been funny about his posts is how he flip flops on them. First turnigy batteries are the best deal out there then post bashing c rating and puts up a video about turnigy bashing their claim. Then post a video about an independent tester that is basically saying the opti power batteries are tested by him and he even says none get the c rating sticker unless it makes the c rating test (he says that with approx 45 sec left in the video) but then disputes the guy.

This has been entertaining to say the least. It has been fun but I guess as it always goes all good things must come to an end. It is time to put this to rest at least until some better facts are out there. Come on at least prove the Battery University claim of the charge and discharge IR being different or wrong and show the proof. Not just saying. Or get the test equipment like that guy in the video has and prove it wrong that way. At least then we would know for fact. At least then we would know how far off it is. Until then all this is just rambling.

Oh and as far as ohms law being wrong I doubt it is. But like most things it take accurate numbers to be correct. If in fact the charge IR is not the same as discharge IR then the numbers won't be correct. Then if that is the case it will be wrong

Also in typical fashion you answer no you won't show numbers or prove it. Makes you look like you are starting the trouble not ace dude. His request was a simple one

Team Jr

08-26-2016 03:14 PM
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JuanRodriguez

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The Villages, Florida

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

08-26-2016 03:30 PM
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Richardmid1

rrProfessor

Leeds, England

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His request was simple and he knows it and he knows my statements are correct, he's trying to wind me up but im done here.

60% of the time, it works every time!

08-26-2016 04:18 PM
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LaDon

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Fort Dodge .Ia

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Yeah but without the numbers it means ZIPPO. Nothing nada

Team Jr

08-26-2016 04:26 PM
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Richardmid1

rrProfessor

Leeds, England

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There were no numbers needed. I'll say it yet again but in slightly different words 5000mah 6s and 5000mah 12s flown the same way I. E. Same flight time will have equal strain on the packs.

What do you not understand about that?

60% of the time, it works every time!

08-26-2016 05:26 PM
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Ace Dude

rrProfessor

USA

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Of course Ohm's law is not wrong!!
There were no numbers needed. I'll say it yet again but in slightly different words 5000mah 6s and 5000mah 12s flown the same way I. E. Same flight time will have equal strain on the packs.

What do you not understand about that?
What unit of measure are you equating to:
strain on the packs

  

08-26-2016 05:43 PM
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