naynay12

http://www.hobbycity.com/hobbycity/s...25C_Car_Lipoly
Are thse zippy lipo packs anygood,they are cheap.I heard that they are no good for some reason anyone tried these ones,or the 3s verion(hard case that is)?

twomanytoys

I use Zippy packs on 3 brushless boat setups and I really like them. They work really well and for the money they cant be beat. Zippy and Rhino are good lipos.

scarletboa

My Feedback: (1)

the hard-cased zippy lipos have poor soldering jobs and will be rendered useless once you start driving.

the 3s 5000mah packs are much better and are very good for the price. it is only $43 for a 20c 3s 5000mah pack and $50 for a 25c 3s 5000mah pack. the 30c pack is $62.

i plan on getting the 25c packs.

black mamba

These are the ones you want. Just snip off the connector and solder on a Deans.
http://www.hobbycity.com/hobbycity/s...idProduct=8587

naynay12

thanks for the replies.
The 20c 4000mah 3s zippy lipos that are around $33 will be find with a fiegao motor right?I will be running 2 3s lipos, in series,what gearing should i be looking at, and what size XL motor?

black mamba

I personally wouldn't run anything less than a 25C battery with a big 1/8th BL setup. Go at least 30C for best performance.

transam388

At least as per the HPI FLUX manual you are NOT supposed to use less than a 25C LIPO!!!

scarletboa

My Feedback: (1)

yes, but he is wanting to use a feigao motor. they conume much less power than the neu style motors. the battery you (naynay) picked out will be fine for a feigao but if you upgrade to the motor that is in the flux, you better go easy on those batteries or they last too long.

benzy2

25C only really matters for a given battery size correct? I'm very ignorant on the specifics of electricity but I was under the impression that what mattered was continuous amp draw, not C. I thought a 5000mAh battery with a 20C continuous rating meant it could deliver 100 amps continuously. I also thought that an 8000mAh battery with a 12.5C continuous rating meant it would also deliver 100 amps continuously. I thought the rough rule in 1/8 scale was something that could deliver 100 amps continuous but have heard 80 amps would be fine also. I guess this is more of a question than a statement as I would like to hear from those who understand better what is needed to drive these motors/ESCs.

scarletboa

My Feedback: (1)

you are correct. i think hpi just doesn't want people to get the REALLY cheap batteries like the ones on e-bay that claim 10-15c but can barely handle 5c.

you are also right about the 100amp rule. the motor on the flux can draw up to 150amps if geared high enough but the 20c zippy lipos can give 30c 30 sec. bursts. that is 150 amps. i don't know anyone who can give full throttle to a flux for more than 30 secs. witout lifting the tires off the ground. also, when there is less load, for example, tires off the ground, there is very little amp draw. My rustler vxl peaks at about 50 amp draw but when giving full throttle with the tires off the ground, it draws less than 10 amps.

unless you are driving the flux full speed while you are in a car shasing it for more than 30 seconds while the flux is way overgeared, you don't need a really powerful battery.

benzy2

Thats what I was thinking. You couldn't put 1450mAh 25C continuous packs in like you can 5000mAh 25C continuous packs. I looked at the flux manual thread as I thought it was going to say a given mAh rating to go with that 25C but when it didn't I wasn't real sure if my understanding of C and amps was correct or not.

black mamba

For as cheap as the Zippy packs are, why not buy the biggest ones they have? LOL. The more juice you can throw at the Flux, the more "powerful" it is. It loves 3S packs with big discharges.

benzy2

I'm not saying to go small. I just meant I could see somebody seeing the manual state 25C as being the only thing of importance and dropping a 1450 3s 25C in and having problems. Bigger is better, I totally agree.

Lilredmachine

The Feigao motors are inefficient, poorly made, sensitive to gearing, run hot and the XL versions are serious amp hogs. A lot of people have puffed lipos using the 8XL that wouldn't have puffed on a comparable Neu.

naynay12

Lilredmachine - Any links to the 'puffed' lipos from the fiegao.
I thought hat the fiegao will be find with the 4000mah 20c zippy lipos like scarletboa stated.
http://www.hobbycity.com/hobbycity/s...0mAh_3S1P_20C_

What gearing should i run with 2 3s lipos linked in series?And what size fiegao XL?

Also while im at it,i may as well verify that this connector will work for charging at 5 amps for two 3s lipos linked ? http://www.hobbycity.com/hobbycity/s...idProduct=6569

Also i bargained an ebay memebr to sell an ezrun 150amp esc for $108 shipped to Australia!

Lilredmachine

There's numerous references around on forums, no specific threads though. The XL Feigao series can pull serious amps, and considering the nickname for them on RC-monster is 'spinning toaster of death' I wouldn't skimp on the lipos. Saw a thread recently where a 10XL (far less amps than the 8XL) on 6s had blown a 150 amp 6s esc.

Those 20c will most likely be pushing it in terms of amp draw. Seen as the difference between the 20c and 30c lipos is about $30 I'd get the 30c. Only take a replaced 20c pack before you're paying more than you would have for the 30c in the first place.

black mamba

Yeah, HPI should've included a mah rating to go along with the 25c requirement, but I think most people that buy this truck will know what battery sizes to use. At least at this level, they should know what they are doing. LOL.

spiftacu1ar

According to castle support, you should have a MINIMUM of 80amp continuous capable packs. (4000mah 20c min). However, they reccomend at least 100 amp continous, so the batts will run at 80% cont (80% of 100 is 80amps) and therfore run cooler. Support also says you can't substitute c rating for mah or vica versa (e.g, you can't run 8000mah 10c or 2000mah 40c). This info comes straight from Joe Ford at Castle creations. I am not 100% sure of the reasoning, though, so take it as you wish. He specifically said running the castle with insufficient funds is not covered by warranty. However, I personally think this might be grounds for a lawsuit for false advertising, as their website still says 18 cell nimh compatible, and nowhere does it say that it voids warranty. Luckily, I bought 5000mah 25c zippy's so I don't have to worry about that.

twomanytoys

You never replace mah with c rating.

black mamba

You both misunderstood me. I'm well aware of what the Flux needs and doesn't need-I own one. What I was saying was instead of HPI just saying you need to run 25C packs, they should've said you should run at least 4000mah 25C packs. I personally would never use a mah rating under 4000 in a Flux, regardless if it is 25C or 35C.