Originally Posted by DaveW

Hm... so you think my current packs are at fault then?

I was hoping that wasnt the issue... because they dont seem to have any performance loss. Just the swelling that dissipated after this weekends racing...

Originally Posted by Randy_Pike

Good batteries should never swell. If your packs are puffing this is the sign you're exceeding they're ratings. This can be from running them lower than their recommended low voltage range or their "C" Rating isn't what they claim it is.

Understand that with the Pro4 and T8 motors we recommend at MINIMUM 30c packs.

Originally Posted by Randy_Pike

Did you radio calibrate after the update? If not you may not be getting full throttle.

If you did, a setting is off.

Originally Posted by Suteki

I am noticing my Gens Ace 40c hardcase 5000mah 2 cells are puffing after using them in my Losi (RX8 + 4600 pro 4). Whats the story on puffing, at what point is it too much? I've heard of pretty much all lipos swelling at some point, even my Thunder Power 5300 2 cell is a little puffy.

Have some turnigy nano-techs (6600mah 65c 2 cells) coming so will be interesting to see how they go.

Also of note, I ran the Losi SCTE up and down my street earlier this morning and motor temp came off at 145f with a 14t pinion, do motors plateau at a certain temp or incrementally just keep getting hotter?

Originally Posted by Suteki

Also of note, I ran the Losi SCTE up and down my street earlier this morning and motor temp came off at 145f with a 14t pinion, do motors plateau at a certain temp or incrementally just keep getting hotter?

Originally Posted by nmdesertracer

my Orion packs have never swelled up. You gotta look at the mah your putting back into your packs. I storage my packs after each race weekend and have 1 pack per heat etc. Try and not go below 3.80v per cell while running. So if you have a 5 min heat race and you put say 1500mah back in that means in a 10 min main its gonna be 3000mah taken out of the pack. Now if a bearing seizes up or a drive line problem you pack is gonna drain even faster.

Originally Posted by DaveW

My RX8 and T8 ran flawless this weekend. Ambient air temp was a little higher than it had been in previous weeks (~15 degrees). The ESC never exceeded 3 leds for temp and the motor never exceeded 140 degrees, same ESC profile and gear, almost identical traction conditions (i should add that i rebuilt the truggy and all bearings were clean and free with no driveline binding).

My packs (2 2s 5000ma 45c) however puffed up quite a bit in the 6 minute quals and got decently fat during the 10 minute main (swole up enough to push the battery tray into the spur gear during the run). Looking at my packs now (charging for storage) they have almost returned to normal size with a little bit of puffiness visible.

I have enough runtime to complete two quals each with two or three practice laps prior, and then my packs take about 3800ma to recharge (4s sync charge) after that. Im considering going to less mah per pack, and to shorty packs to be better able to balance the chassis... would anyone advise against this? Suggestions/questions? Id like to have this sorted out so when i buy my buggy i have a game plan in mind... to avoid trial and error.

Originally Posted by DaveW

My first post. ^^^ I thought it covered all the bases?

I dont have a run time issue. I can run over 20 minutes of consistent 1.38-1.40s laps on these same packs if i wanted to. I dont run them too low... i raised my cutoff above 4s after i read a previous post on this thread. I usually pull the truggy after i feel the punch fade anyways, no sense in turning laps with a faded trigger feel. This was the first time the temporary swelling happened.

Because this is the only pair of packs i have for the truggy, am i abusing them by using them as often as i do in a race day? I never had problems in TC running LiPo's repeatedly during a race day...

Originally Posted by viper0463

How many cycles would you say you have on those packs? It might be that they're just getting worn if you know what I mean.

Originally Posted by nmdesertracer

Ran the 223 in my 1/8th buggy and sc 4x4! felt weak compared to the 212 on the bottom end. Was pretty disappointed.

Originally Posted by Randy_Pike

Generally speaking, yes. 14t is a bit tall unless you're on a very large track, fyi.

Originally Posted by DaveW

Well that is entirely possible... and another reason i was asking. I have put a lot of run time on them the past two months... and they were used when i got them. If i were to count cycles since i have owned them... including storage between uses... right around 46. I wouldnt know total usage before my ownership, but i do know they were used in mod TC.

Isnt the average cycle life over 300? I charge at 6.5 amps, every charge is balance charged on my Hyperion Duo, so i would think any real stress would be from run time.... or no?

Kinda heading off topic there and that isnt my goal... i just wanna be sure the next set of packs i buy are reasonable for my goals and intentions for the truggy (and soon to be buggy). I intend to snag a 2250 truggy motor, and picked up a 1900 for the buggy.

Originally Posted by DaveW

Well that is entirely possible... and another reason i was asking. I have put a lot of run time on them the past two months... and they were used when i got them. If i were to count cycles since i have owned them... including storage between uses... right around 46. I wouldnt know total usage before my ownership, but i do know they were used in mod TC.

Isnt the average cycle life over 300? I charge at 6.5 amps, every charge is balance charged on my Hyperion Duo, so i would think any real stress would be from run time.... or no?

Kinda heading off topic there and that isnt my goal... i just wanna be sure the next set of packs i buy are reasonable for my goals and intentions for the truggy (and soon to be buggy). I intend to snag a 2250 truggy motor, and picked up a 1900 for the buggy.