Brushless CRT Questions

[Sower]

Originally Posted by glassdoctor

I went to check out the parking lot and snow bank... I was by myself and it was getting dark out, so bad for video... but I got a quick test run with a buggy. The "jump" is like 8' tall... but the snow is not as hard packed as I hoped it would be. But I got the buggy like 10' off hte top I think... so at least 15' up in the air.

So I think it's a go for some good video, maybe tomorrow :)

Dude, that sounds awesome. You have to post video when you can.

. . . the sun will come out tomorrow . . . la la la . . . :027:

[Serum]

No, it's not a for vs chevy story; that are opinions, the difference between the cells are just stated facts; I have seen graphs here on the forum of maxamps 8K packs and enerland 4350 packs. the 4350 packs stay close to the 3.4V on a 100A load; (340W per cel with a lot of room for play)., while the maxamps packs are getting in breathing problems at 300W per cell..., so you realy need a 2P to make it work, on 2P, the 8K maxamps stay at 3.2V per cell on 100A load.

(talking about realistic RC car/truck loads, so not a continues 100A, but 'peaks'

So to keep it going with maxamps packs; get 2P, that's my advice. but on 2P they don't perform (powerwise) like the Enerland 4350's. they are rather close though.

[glassdoctor]

Yes the Enerlands are superior.

But I'm assuming that we haven't seen any froum members post eagletree data from running Enerlands... and real in-car data is different than a lab test like the guys at rcgroups do with a bare cell and controlled equipment.

BTW, the Enerlands outperform the Maxamp cells on the graphs no doubt... although I have yet to see graphs of the latest Maxamps generation cells.

Personally I would rather have the 8000mah in my cars because I want the runtime for racing. There is a weight penalty... but at least they are drasticly less expensive per mah. That's the reason I'm running Maxamps.

But man, I still am wanting some of these Enerland Flightpowers :004: or the Kokams...

[Sower]

Originally Posted by Serum

No, it's not a for vs chevy story; that are opinions, the difference between the cells are just stated facts; I have seen graphs here on the forum of maxamps 8K packs and enerland 4350 packs. the 4350 packs stay close to the 3.4V on a 100A load; (340W per cel with a lot of room for play)., while the maxamps packs are getting in breathing problems at 300W per cell..., so you realy need a 2P to make it work, on 2P, the 8K maxamps stay at 3.2V per cell on 100A load.

(talking about realistic RC car/truck loads, so not a continues 100A, but 'peaks'

So to keep it going with maxamps packs; get 2P, that's my advice. but on 2P they don't perform (powerwise) like the Enerland 4350's. they are rather close though.

Thanks Serum. I wasn't trying to say that there wasn't quantifiable data on the batteries to determine which one is more superior - just that I didn't have it. In other words, the only info I had was heresay or opinionative. Hence the Ford vs Chevy reference.

Great info on the batteries though - thanks!

[Serum]

Yeah, it was on this forum a user posted graphs of his 4350's.. i think i even have them on my puter...

[Serum]

i have got a screendump of their 4900's here; these are Virusss his cells;

as you can see, at 105A load they stay at 3.54V per cell...

Impressive IMO..

[Dafni]

Man, do I look forward to my Eagletree stuff! No more guessing.
I have plenty of different cells and motors to try.

Just from my feeling, i can tell the 3700 Enerland cells are more powerfull than Maxamps 4000 cells in 2P.... and they claim 20C too :032:

Only one way to find out! Gawd bless electronic progress.

[Serum]

Amen Brother Daf.. Those flightpower do look impressive, don't you agree?

[Dafni]

Yeah, they are.

You get what you pay for, as always.

Just as I told a mate this morning: Maxamps are good for their price, can't beat their 8000 packs. They are like the daily bread and butter, whereas the FPs are the sunday steak. Now if I were rich, I'd eat steak everyday. :)

[Serum]

Most unlikely, since you are a vegetarian :p

but i get your drift Mate!

True, for the price Maxamps are quite cool! and i will buy more of them as well. but the trackpower packs (4900 mAh) are available in the US for 119 bucks, which is cheaper than the orions.
It is a fair price IMO.

[glassdoctor]

Thanks for posting the data Serum. My 12000maxamps have #'s like that too. ;)

[Serum]

they better glass! they are rated at 600A peak.. but the trakpower packs only weight 268 gram, and do as advertised.

[Sylvester]

This REALLY makes me wanna get those packs..

I only have #'s for a TP pack...and the results were so bad I question the data all together. Couldn't even hold 12C bursts. But a cross check with a GP3300 pack held strong and suggests the eagletree was valid. Seems a thread on eagletree data would be of use to us all, since the batt companies won't play by a standard set of rules, and unlike others here I don't have the funds to buy so many Lipo packs at the 5S level. Think there's enough #'s amongst us to make it worth while?

[Sower]

It might also be a good idea to list which companies are using the same cells. How many producers are there of lipo cells? Not the actual battery, but the cell that the battery company buys and puts together. Did that make any sense?