A123 Cell Placement Mock Up In a TREX 600

[Air_Alpheus]

Here are some cell placements in my 600 using A123 cells. Im trying several different configurations. I know I will still have to balance the heli after I put these sells in but I want to try it. This is a 7s2p configuration.

[spork]

I don't see any configurations or links to such. All I see are three "banners" for a forum that many of us were happy to leave. I am interested in your A123 configurations however.

Edit:

It looks like you tried direct linking to images on RR. Can you either tell us how to navigate to those pics or post them in this thread or your HF gallery?

[Air_Alpheus]

I can see the picks they are big pics. I used RR to host them. I dony know of any other way to post pics.

[spork]

I can see the picks they are big pics. I used RR to host them. I dony know of any other way to post pics.

Interesting. I just went to RR and found your thread by searching on your username. I can see the little pics there, but when I click on them I get the same silly banners.

To post here you can simply attach a pic to your post by clicking on the browse button below the text window. You can also go to your gallery and upload pics there. It's free for everyone, everyday!

[Air_Alpheus]

Try This.



http://www.runryder.com/fastphoto/28134/a123_pack_001-7081.jpg
http://www.runryder.com/fastphoto/28134/a123_pack_002-7113.jpg
http://www.runryder.com/fastphoto/28134/a123_pack_003-7153.jpg

[spork]

Hmmm..... I'm using a FireFox browser, so I just repeated the whole thing with MS Explorer. Same result.

Can you tell me the weight of the 600 with no batteries? Also, what is the standard blade length for the 600?

Thanks.

[spork]

Try This.

Actually, I already tried that. I did a "reply with quote" so I could see your text. I pasted that in my browser, and still no luck. Let's wait and see if others see your pics. I'm surprised you see them and I don't. Maybe you just have to be cooler than me to see 'em. :dontknow

[Air_Alpheus]

try this again.

[spork]

Nice pics. 14 cells!? Can you tell me the weight without batteries?

[aaronredbaron]

I hgave flown a 7s 2p config on a stock 600. its really heavy and the head speed is low. even thought the peak voltage is the same as a 6s lipo pack, the voltage under load is a lot less, hence the head speed is down. I didn't get any specific numbers, but I was not happy with it. I think the only way to go with a123'son a 600 is going to be to go 10-12 series 1 parrallel on a higher voltage setup.

[4cyclic]

Put 14 cells up front and cg will be way too nose heavy.

I put 10 cells up front and 4 cells under main shaft cavity and cg is perfect. You will have 2 packs to charge and connect though. Works quite well for mild 3d on 13 helical pinion , but a 14 or 15s 1p setup with suitable 12s esc and motor combo will be the ticket for high power.

[4cyclic]

Put 14 cells up front and cg will be way too nose heavy.

I put 10 cells up front and 4 cells under main shaft cavity and cg is perfect. You will have 2 packs to charge and connect though. Works quite well for mild 3d on 13 helical pinion , but a 14 or 15s 1p setup with suitable 12s esc and motor combo will be the ticket for high power.

[Finless]

OMG looks HEAVY!

We have tested 10S , 8S lipo and a good pilot could FEEL the difference even between 3700 10S and 3300 10S packs! YES the 600 can be felt that way well... Sorry but this looks like a HEAVY pig to me.....


Bob

[DUP-Yeah (Spruce)]

I dont remeber him asking for your opinion. :roll:

[Finless]

I dont remeber him asking for your opinion.


This is Helifreak... YOU CAN get an opinion without asking for one! Opinions are what you pay for them.. NOTHING! But if you dont like people giving opinions and want BULL and people giving GREAT reviews without opinions then go to the other places!

Sheesh man.... FUN, LEARNING, and RESPECT! :roll:

Bob

[Finless]

User Yeah..... Hmm the sign on DATE is right... Could this be Spruce using another account? We dont have to go through this again do we?

Bob

[spork]

I dont remeber him asking for your opinion. :roll:

I was going to say "What are you NEW here!?" Get 3 of us together, and you'll get a minimum of 4 opinions. Hell, I'm going to have the opposite opinion even if I agree with you.

But then Bob pointed out - you are new here.

[rcmarty]

I browsed over this thread the other day. I'm planning on doing the same thing i hope.

I have a swift and will be using the 123 cells in the 10 cell brick as they come out of the dewalt packs. I'm told by a few that the swift wil be alot better with the 10 cell 123's and is a bit of a performer.

I think running 14 cells will be quite heavy also. My plan is to use voltage to my advantage and run 10 or more cells to get the amperage down (eliminating the need for a 2p configuration).

I know there has been alot of testing by gary with raptor conversions (tppacks) using the lipo's and 12 cells. These tests are in the same league as the t600 IMO as the raptor titan is swinging 620's. He was using 15 123 cells to get in the power range 10-12 cell lipo was delivering.

He also noted a 14 or 15 cell 123 pack was similar to a 10cell 3700 pack in weight. The capacitity was lower but the power was there.

I'll be able to give some more input later on as i need to roust up the packs and more of my hv setup for my t600. But for all the reading i've been doing , i think a t600 could be flown on 123 cells. Flight times will be shorter though (only 2300mah ) but it will be a cheaper power source with a small weight penalty. Not nearly as bad a penalty as the emoli calls though.

I recall ozace has done a 123 t600 heli. Keep in mind he enjoys more of a sport flying machine.



Martin :)

[WillJames]

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Yeah [ 1 Post ]

[PDC]

Just looked at the datachart for the A123 cells compared to a FlightPower battery. Just to compare what you get in terms of performance for the same cell mass.

http://www.a123systems.com/html/products/ANR26650M1specs.pdf
http://www.flightpower.co.uk/core/datasheets/EVO20_Data_2s1p3300.htm

Nominal capacity.

A123 = 2600ma
FlightPower = 3300ma

cont/max peak discharge

A123 = 70A/120A
FlightPower = 66A/165A

Voltage under load for a single cell

A123 15C/40A = 2,7V
FlightPower 15C/50A = 3.5V

Weight of a battery equal to a 10s lipo battery

A123 13S = 35,1V at 15C/40A = 910 gr. (32.099 OZ)
FlightPower 10S = 35,0V at 15C/50A = 884 gr. (31.182 OZ)

Guess FlightPower will rock the heli the most and the longest.

[Finless]

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Users posting from this IP address
spruce [ 33 Posts ]

Yeah [ 1 Post ]

So Umm what does that mean... Same guy or not?

Bob

[WillJames]

Same guy, you guessed right.

[spork]

Same guy, you guessed right.

Heck, couldn't you tell just by the same good cheer!? :mrgreen:

[csell]

Hello.

I am in the progress of baying some 10s a123 packs for my T-Rex 600.

Your pictures gave me the idea, to try to se how to mount it, also if I in the future want to use 12s or 13s.

What did you actualy end up with?

Is it possiable to have them all in one 12s or 13s pack?

Did you ever try to ballance the heli?

After what you know today, do you have any suggestens for me, what to try?

Regards Carsten