RunRyder RC
 10  Topic Subscribe
WATCH
 2 pages [ <<    <    ( 1 )     2     NEXT    >> ] 2296 views POST REPLY
Scorpion Power Scorpion Power
09-04-2009 02:58 AM  8 years agoPost 1
Al Austria

rrElite Veteran

Gainesville, FL

My Posts: All  Forum  Topic

Been flying the new TP 3S 2250 45C packs since IRCHA and yes, they are amazing. This sucker just showed up at my doorstep. Oh yeah!

PM  EMAIL  GALLERY  Attn:RR  Quote
09-04-2009 03:08 AM  8 years agoPost 2
FlaG8r

rrElite Veteran

Florida

My Posts: All  Forum  Topic

Very cool, I just read they can be charged at 6C! Geez....a couple of thoughts though;

-I'm cringing just thinking about how much that particular 6S 5000 pack will run. The TP 30C 6S 5000 pack is $300. No way in he%% I'd pay that

-I wonder if you can step up from 25 or 30C pack to a 45C pack and not change your ESC.

Finally, I think the sender mailed it to the wrong house.

Life is tough, it's tougher if you're stupid

PM  EMAIL  GALLERY  Attn:RR  Quote
09-04-2009 03:33 AM  8 years agoPost 3
Al Austria

rrElite Veteran

Gainesville, FL

My Posts: All  Forum  Topic

HA! Nah, they definitely got it to the right house thank goodness. I got this one through the 50% trade-in program at IRCHA, ended up being only $140 including shipping. I think the "show" price was like $270 or something.

About pricing, the fellow I talked to at the Thunder Power booth said the pricing on ALL of their other lipo lines will drop 25% sometime this month, and the 45C line will be priced 10% LESS than the current 30C line. I can only hope all of this is true.
-I wonder if you can step up from 25 or 30C pack to a 45C pack and not change your ESC.
Batteries don't really "push" current, for lack of a better term. Rather, the motor pulls current from the ESC, and the ESC pulls current from the battery. The thought would be something like "is this ESC big enough for this motor?" or "is this battery big enough for this ESC/motor?". For a given battery voltage though, the higher the discharge rating, the better!

PM  EMAIL  GALLERY  Attn:RR  Quote
09-04-2009 03:41 AM  8 years agoPost 4
JEEPWORLD2002

rrKey Veteran

BLUEBELL PA USA

My Posts: All  Forum  Topic

wish i could buy some

=( i ve been waiting and no info on their site, i wasnt @ ircha, just feel left out i need a Batt sponser badd wow what kind of trade up ?? i got some tp ext v1s that could use some refreshing =)

Trex600n Trex500 Mikado LoGo5003d// Hacker, CastleCreations,Ys 50, JR 7703d/8900, Radix

PM  EMAIL  Attn:RR  Quote
09-04-2009 04:01 AM  8 years agoPost 5
TJinGuy

rrProfessor

Socorro, NM - USA

My Posts: All  Forum  Topic

I wonder if you can step up from 25 or 30C pack to a 45C pack and not change your ESC.
Technically speaking the higher the pack rating, the better the pack will hold voltage under load and thus lower amp draw. That would actually make it easier on the esc. Not sure if it really works that way but that is what the math says

- Chris

Team New Mexico
TJinTech

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
09-04-2009 04:03 AM  8 years agoPost 6
Al Austria

rrElite Veteran

Gainesville, FL

My Posts: All  Forum  Topic

Hey Jeep,

They had a 50% trade-in program for your old packs, which they also did for the pilots at SEFF this year. I can't remember all of the specifics but basically you trade in however many old or damaged TP packs you have(or up to one of another brand) and you would get 50% off of a new pack for every pack that you trade in. I think if your pack was below a certain size(2700 mAh I believe) you could only buy a new pack up to 2700 mAh, and if it was above you could choose any pack you wanted.

PM  EMAIL  GALLERY  Attn:RR  Quote
09-04-2009 04:05 AM  8 years agoPost 7
Al Austria

rrElite Veteran

Gainesville, FL

My Posts: All  Forum  Topic

Technically speaking the higher the pack rating, the better the pack will hold voltage under load and thus lower amp draw. That would actually make it easier on the esc. Not sure if it really works that way but that is what the math says
Sounds about right from here!

PM  EMAIL  GALLERY  Attn:RR  Quote
09-04-2009 04:39 AM  8 years agoPost 8
JEEPWORLD2002

rrKey Veteran

BLUEBELL PA USA

My Posts: All  Forum  Topic

sweet i wish one them or one of their reps could offer me that deal ?? thats sounds great would love to see my logo pushing one of those packs and pulling BIG amps. i ve got the 3850 to almost 30c 87 amps

Trex600n Trex500 Mikado LoGo5003d// Hacker, CastleCreations,Ys 50, JR 7703d/8900, Radix

PM  EMAIL  Attn:RR  Quote
09-04-2009 04:53 AM  8 years agoPost 9
petmotel

rrKey Veteran

DeKalb, IL.

My Posts: All  Forum  Topic

Technically speaking the higher the pack rating, the better the pack will hold voltage under load and thus lower amp draw. That would actually make it easier on the esc. Not sure if it really works that way but that is what the math says
When you increase voltage to a servo, it uses more current and you need to increase capacity from your flight pack to maintain the same operational length of time.

If I=V/R (Ohm's Law)and resistance remains a constant, you can see that current (I) will increase proportionally to an increase in voltage.

If the batteries maintain a higher voltage throughout the course of the flight, current will also increase, and the resultant flight time for a given capacity will decrease.

I'm using some of the new gneration Hyperion batteries (just 25C, 4000 MAH 4S X 2) and they are WAAAY stronger than a set of older TP Extreme V2s. Average pack resistance for the new packs from Hyperion is about 20 milliOhms. Resistance for the older TPs is almost ten times that. Battery technology is increasing rapidly!

Jay

PM  EMAIL  HOMEPAGE  Attn:RR  Quote
09-04-2009 05:19 AM  8 years agoPost 10
TJinGuy

rrProfessor

Socorro, NM - USA

My Posts: All  Forum  Topic

I was looking at it as a constant load thing, or in this case a constant wattage thing. Since W=IV, I=W/V so the higher the voltage the lower the amperage needed for the same wattage.

Of course for this to hold true, you would have to keep the wattage draw the same. So if your higher output pack raises your headspeed, then you would need to adjust it to maintain the same wattage.

- Chris

Team New Mexico
TJinTech

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
09-04-2009 05:53 AM  8 years agoPost 11
Al Austria

rrElite Veteran

Gainesville, FL

My Posts: All  Forum  Topic

If the batteries maintain a higher voltage throughout the course of the flight, current will also increase, and the resultant flight time for a given capacity will decrease.
If you run a straight throttle curve, then yes this is true. However, I imagine if you were to run a governed ESC setup, that this would no longer apply as the load is regulated.

PM  EMAIL  GALLERY  Attn:RR  Quote
09-04-2009 01:22 PM  8 years agoPost 12
petmotel

rrKey Veteran

DeKalb, IL.

My Posts: All  Forum  Topic

I was looking at it as a constant load thing
However, I imagine if you were to run a governed ESC setup, that this would no longer apply as the load is regulated.
Obviously the constant wattage/headspeed parameter would then decrease current draw, with an increase in voltage, as both have pointed out.

With all the posts about ESCs going up in flames, I have yet to try a governor mode on my electrics, but it would be a very nice option.

I am still wondering about the need for the high C-ratings, and what their potential benefits are. Currently, my 8S 600 size electric with a 720KV motor is alredy running at less than 70% on the throttle curve with the 25C batteries.

I can't see an advantage to the higher C batteries unless they will give me a proportionally longer life span to their higher price point. My charger will only do 2C with the 4S packs anyway, so there is no advantage in quicker charge cycles either.

Am I missing something here, or is the advantage only to be found in the smaller packs?

Jay

PM  EMAIL  HOMEPAGE  Attn:RR  Quote
09-04-2009 02:36 PM  8 years agoPost 13
TJinGuy

rrProfessor

Socorro, NM - USA

My Posts: All  Forum  Topic

Higher C-rated packs are just higher performance, i.e. they hold voltage better under load and can hand out more current on demand. For some folks that means higher head speeds. For others it means better maintained head speeds under load. For yet others it means the battery has an easier time doing lesser duties, thus running cooler and lasting longer. And finally last but definitely not least, they give the owner the opportunity to shout from the roof tops "Dude I have a 45C pack, how about them apples!!!".

As for governors, esc based governors don't hold a specific head speed like Nitro but rather just hold a motor speed that is tied to that throttle setting. So a higher C-rated pack will likely raise your head speed and again require you to lower your throttle setting. Of course this is really only a problem on larger helis where you are actually trying to run a specific head speed. Anyhow in this case it would still keep the average wattage the same, thus still lowering the current needed.

- Chris

Team New Mexico
TJinTech

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
09-04-2009 03:18 PM  8 years agoPost 14
Eco8gator

rrElite Veteran

Palm Beach, FL

My Posts: All  Forum  Topic

Unless you have them its hard to know what they are like. I have a 45C set for my 90 sized electrics and it is a noticable difference in preformance. Before I could hear minor tone changes in the motor when the helicopter was flown through hard manuvers(quick direction changes) but now the tone change is not noticable through these same manuvers.... I guess Im trying to say that the power is consistant pretty much from start to finish depending on when you set your timer.

Xera Motors
ProBar
Minicopter
Thunder Power

PM  EMAIL  GALLERY  Attn:RR  Quote
09-04-2009 04:35 PM  8 years agoPost 15
Al Austria

rrElite Veteran

Gainesville, FL

My Posts: All  Forum  Topic

[quote]As for governors, esc based governors don't hold a specific head speed like Nitro but rather just hold a motor speed that is tied to that throttle setting.
That is a slightly contradicting statement. If ESC's ran in the manner you are describing, then a packs' C rating would not effect headspeed as motor speed is is directly proportional to headspeed, assuming if the motor speed was in fact tied to a specific throttle setting. All a nitro governor is doing is regulating engine RPM.

That said, MY CC 110HV is capable of being programmed for a specific, numeric headspeed.

The bottom line is if you set up your machine for a specific headspeed, meaning making the necessary adjustments for a lower loaded voltage drop, then your current demands will decrease.

PM  EMAIL  GALLERY  Attn:RR  Quote
09-04-2009 04:39 PM  8 years agoPost 16
TJinGuy

rrProfessor

Socorro, NM - USA

My Posts: All  Forum  Topic

I am not sure how esc governors work exactly but somehow they tie a motor rpm to a throttle setting. I don't think it is a fixed rpm though but rather they measure the rpm at that throttle setting and then try to hold it there. So if that is correct then each battery will make a slightly different rpm that the governor will see and use as a baseline.

So your CC110 can be set for a specific rpm?

- Chris

Team New Mexico
TJinTech

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
09-04-2009 05:50 PM  8 years agoPost 17
Eco8gator

rrElite Veteran

Palm Beach, FL

My Posts: All  Forum  Topic

Actually yes the CCESC can be set up for an specific RPM regardless of voltage.

Xera Motors
ProBar
Minicopter
Thunder Power

PM  EMAIL  GALLERY  Attn:RR  Quote
09-06-2009 05:40 AM  8 years agoPost 18
FlaG8r

rrElite Veteran

Florida

My Posts: All  Forum  Topic

Al, is TP giving any guarantee on these that they'll last a certain amount of cycles? Another thread was saying that the newer TP packs will last up to 250 cycles...

Life is tough, it's tougher if you're stupid

PM  EMAIL  GALLERY  Attn:RR  Quote
09-06-2009 07:06 PM  8 years agoPost 19
misskimo

rrElite Veteran

Alaska 17 years, before mississippi for 31y

My Posts: All  Forum  Topic

you will notice a big difference in power,
I have 6 6S packs of V2 3850s. I run them in series as 12S , 4 packs are a year old, and 2 are from jan of this year, they run the same , I have them in my X-Tera 700 heli, geared 11.7 to 1 with a X-Era 4030-2.5Y motor and Kontronics esc set at 85% gov of 100% headspeed. head speed 1850. with the new 40C 5000s from TP , my headspeed went up 200 and then theres the 4 barrel it seams to have compared to the 2 barrel carb V2 3850s . man its got the grunt . you will be happy with the new packs

T

PM  EMAIL  GALLERY  Attn:RR  Quote
09-07-2009 02:38 PM  8 years agoPost 20
Richardmid1

rrProfessor

Leeds, England

My Posts: All  Forum  Topic

You gotta know how to treat your li-po's if your paying that much for them!

60% of the time, it works every time!

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
WATCH
 2 pages [ <<    <    ( 1 )     2     NEXT    >> ] 2296 views POST REPLY
Scorpion Power Scorpion Power
 Print TOPIC  Make Suggestion 

 10  Topic Subscribe

Monday, October 16 - 11:17 pm - Copyright © 2000-2017 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online