My EXPENSIVE list of Bl-lipo items
 

This is what is going onto my maxx. Please tell me if something is wrong, or does not match up. And what gearing I should run (with a mod 1 51t strobe spur)


-BK 20150---$500

-BK wanderer 10xl (or lehner equivelent, which ever one that is)---$100

-Two Maxamps 3s2p (4000mah lipo cells from maxamps) lipo packs------- $500

-Maxamps 2s2p 7.4v 3000mah reciever pack made with 1500mah lipo cells from maxamps (no ubec b/c i'm running 1 airtronics 358 (200oz) servo and two 357 (.07 sec) servos, two fans, and the esc)---------$60

-Reciever pack converter: http://www2.towerhobbies.com/cgi-bin...?&I=LXJJF6&P=7 -----------$20

-I don't know what it is, and I don't know if I need it, but someone recommended it for my reciever...
http://www.horizonhobby.com/Shop/ByC...ProdID=SPM1600

-2 (if necessary?) Maxamps Hyperion EOS5i Charger---$85 each, $170 total

-5mm gold everywhere (except reciever wiring)

Total: $1356 -WOW-:007:

I can't think of anything else, but if there is, tell me. I'm mostly worried about if I have everything I need for my lipo (eg. voltage regulator and that other junk i need).

or for a charger i can use http://www.finedesignrc.com/battcharge.asp
the ASTRO 109 lithium charger.

Btw, how long will it take this charger (or the one up above) to charge my 3s2p 8000mah battery pack?

a 3s pack charging at 1C (8 amps) it would take one hour. that would be a reason to go with the astroflight because it can charge at a hgiher amperage than most hower i would sugest the schulze 330d or the mrc 989.

Why are you buying the 20150? You can get for the same price the 36150?

36120 will be a MUCH better choice for that motor. There is no need to have a 150amp controller with that motor, but the ability to handle extra cells might be useful for the future.

That's just a capacitor. It is supposed to smoothen any voltage sags when the load (servos) start pulling some current and might help with noise. However, the value is really too small to do any good. Plus, you are running a receiver pack that should easily drive those servos. If you were running low power (under 800mAh) cells with several (at least 5) servos running at the same time, then it might help to keep the voltage up...maybe. Your Lipo Rx pack will be more than sufficient by itself... and even if the voltage did drop slightly under load, you won't even notice it because of that receiver pack converter (which is just a 6v regulator).

Good luck with the rest of your selections!

All I can say is that you are going to have some MASSIVE runtime. Just make sure to get some taps and a balancer for those batteries!

For a charger, you could check out the Super Brain 989. It's supposed to charge up to 8s Lipo. The only thing I'd be worried about with this charger is how many amps it can do with 6s Lipo.

i may have missed but you need to get a LVC for those lipos that thing is going to run forever

whats an lvc?

What are taps and balancers?

I will not be upgrading my voltage in the future, 22.2 volts is plenty! So should I go with a 20120 or 12020?

Will it be any "safer" to just go with a 20150, or is there absolutly no chance a 10xl will get to that amperage?

What speeds will I be looking at? Should I move down to a 9xl for more speed, or is a 10xl good?

Anyone have a KV chart for wanderer motors?


EDIT: I found a hacker B50 chart, which should be the same as the wanderer (+- a few kv, but whatever). My old setup, 8xl on 16 (19.2v) cells got 37881.6 rpm and my new setup, 22.2v on 10xl will only get 35031.6 rpms. So it will be considerably slower, but will I be able to make up the difference in pinion size (say 24 tooth pinion, 51 tooth spur). Or should I go with the 9xl, which will bring me to 38916.6? Should I email rcmonster on this? Thanks.

i think you will be happy with the 10xl. to be honest the 12020 is overkill also. the 10xl would actually be safe to run on a 7020 with the proper gearing. i would just go with the 9920. also, the 10xl has a kv of around 1650 rpm/volt unloaded.

DON'T GET MAXXAMPS!!!!!!!!http://forums.radiocontrolzone.com/s...=212320&page=1

that post proves nothing.

an lvc is a low voltage cutoff and prevents lipo cells from over discharging

REVISED LIST


-BK 12020---$280

-BK wanderer 10xl---$100

-Two Maxamps 3s2p (4000mah lipo cells from maxamps) lipo packs------- $500

-Maxamps 2s2p 7.4v 3000mah reciever pack made with 1500mah lipo cells from maxamps (no ubec b/c i'm running 1 airtronics 358 (200oz) servo and two 357 (.07 sec) servos, two fans, and the esc)---------$60

-Reciever pack converter: http://www2.towerhobbies.com/cgi-bin...?&I=LXJJF6&P=7 -----------$20

-2 (if necessary?) Maxamps Hyperion EOS5i Charger---$85 each, $170 total

-2 maxamps Hyperion LBA6 Balancers $80

-Two maxamp "Low Voltage Detector for Lipoly 3S 11.1V Pack" $30
But the thing is, these are only detectors, they do not cutoff the load. In other words, these are LVD, when i should really be getting LVC.

-5mm gold everywhere (except reciever wiring)

Total: $1240

Maxxamps packs have sucky disgarge rates, Kokam and Apogee batteries are like 20c and maxxamps are only 12c.

Hi, I have a 9920 and 8XL kv2084 . why are the rpm's different from your (Supermaxx)8XL and mine?? By the numbers mine will run 40012 kv on 16 cells and on 22.2 volts it would run 46681 and that is about where it should be for the best efficiency.

your rpms are different b/c I was using the hacker b50 rpm chart, your #'s are most likley correct.

As for discharge, I wired two in parallel, so I will have no trouble with amperage. And if I do, I'll just buy maxamp high discharge packs.

Is that where you want to be??

I ain't no expert, but I've run 16 cells on that setup (but i used a 18.97kw schulze) for many months with no thermals, lack of power, or lack of speed. That setup is just an all around good setup. The 8 cell packs fit in flm/gorilla chassis easily, plenty of power, 50mph of speed, low heat, not much more I could of asked for.

what is the link to Apogee lipos thanks

ygguB naM-your pack puffed up on you because you were running to hot a motor and if you didnt know what a lvc was you didnt need to be running lipos not to mention the fact that a max amps pack is a VERY good pack and you just misused them.

i agree with squee i hope nobody gets the wrong impression about max amps because they are a good company also you didnt even know what a lvc is so you dont even have the right to run lipos(not meaning to affend anyone) and expect everything is going to be all fine and dandy imo
alright i put my 2 cents in

can any of you guys link me to a LVC? I can only find LVD's on maxamp (voltage detector)

I decided I'm going to use two 3s3p batteries. Great amp draw, hours of runtime, and only 72 grams heavier than my 16 cell nimh previous setup (basically i'll be running 19.25 nimh cells of weight powered w/18.5 nimh cells of voltage).

That means i'll probably special order that schulze charger squee mention from rc-monster.

It will cost a TON though!!!!!!!!!

You think i'm redarded!? I knew about voltage limiters, just didn't know they were called LVC.

the only one who called you retarded is yourself...

note that not using the lvc wasn't your only problem.

Hay i'm just kidding.:D

ygguB naM, I am tcolesen over on RCZ (just letting you know). Your case with Maxamps doesn't prove much, to be honest.

Superemaxx89, here is a link to a LVC device you can use:
http://www.dimensionengineering.com/LipoShield.htm You only need one of these, but it will need to be hooked up to the total voltage from both 3s packs (you could hook it up to the input wires on the controller).
To be honest with you, I think you are spending way too much money on batteries. If you have a mishap, that could mean $250+ gone. What I would suggest is getting 4 3s 4000mah packs, and only using 2 at a time (in series). The 4000mah cells can handle the amp draw just fine in 1p, and when they run down you could just switch them with the other 2 packs. Overall, I think this would be the best setup if you are still looking to spend a lot of money.

but one cell parallel means that it can only handle 48 amps continious which is nothing!

I got Team Orion platinum li-po now and I spent $120 on the maxxamps pack.

thats great, make your own thread!:035:

Does maxamps have any sort of return policy?

What taps do you recommend?

Maxamps has very good customer service, undoubtedly one of the best out there.

If you're going to be using the Hyperion LBA6 balancer, then you can get the Hyperion balancing taps.

As far as 48amps goes, that is the continuous rating. Your truck will only require ~23amps average, but will pull more in bursts. These cells are rated at 64amps burst for 10 sec., and can handle even more in shorter bursts (spikes). In 1p they will be plenty, especially since you're using a pretty high voltage setup.

If thats true, then why are emaxx controllers rated for 97+ amps?

good question. to be honest i have no clue:032: :007:

same here no idea :032:
i would like to know the exact reason myself

maybe we have been getting ripped off...:013:

It's for the high burst capability, as well as for heat issues. The MOSFETs used in the controllers are rated for a LOT of amps, but that's at 25 degrees C. At their rated number of amps, they are going to get hot, which is why heatsinks are used, but they will still heat up, making them less capable of handling as many amps as they are rated for.

WHERE DO YOU GET ALL THIS INFO!!!!!:confused:

I've read several datasheets on some MOSFETS, and picked up various info. It's all about the time ;).