trilerian

iTrader: (51)

Just ordered a 4000.

Danny/SMC

iTrader: (2)

Today Eli is using Energ 4600s and his lap times aren't faster than when he was running the 5000 pack. He tells me he feels they are pretty much the same. We have just been doing a regular 5 amp charge with no heating up of the pack prior to using it. Eli will be doing more tests at his home track track but so far it seems promising.

brians11

iTrader: (40)

By heating do you mean an external heater or discharging at 35 amps?

glassdoctor

iTrader: (4)

Danny, I have my GFX now and I'm starting to check out some of my packs.

It's fresh from CE with the lipo update and faceplate etc. They do check/calibrate them when they get sent in don't they?

I put deans on the main leads, and clipped on the sensor leads like you showed earlier.

I'm not going to clutter your thread with data from my stuff, etc but I will say that I'm very happy with the #'s from my packs, just based on what you have posted so far. But I have more testing to do for sure...

Thanks for all the info.

Danny/SMC

iTrader: (2)

Heating is to get the pack up in temp prior to using it on the track. The goal of the testing we have done so far was to see how the pack would react with regular 5 amp charge. So not heating or high amp charging and back to back cycling has been tried. The one thing we were doing is to discharge the pack after a run.

Danny/SMC

iTrader: (2)

GFXs are calibrated but they do tend to be different from unit to unit. I have 2 of them and one of them always gives me 10 seconds more than my other but the voltage and IR is pretty much the same.

Scottrik

iTrader: (261)

Thinking about the heating issue now, the only practical way I see of doing it is the high amp discharge as Danny has been doing it, then charge it when it's wrapped in the tire warmers or over the ceramic heater, etc. These heating methods aren't terribly effective in heating the battery thoroughly, but they should greatly slow (possibly even eliminate if you can create 140-150 degree ambient heat around the pack) heat loss while the battery charges or sits after you've warmed it via discharge.

Mike Haynes

iTrader: (2)

Danny had me put the lipo in my car for a test fit, the 4000 went right in with no trouble, but the 5000 was too tall by the bulkheads, if you shave them down it will get in there, and there is still enough material to hold tweak and all properly, but i would be very careful not too strip out the upper deck screw holes.

STLNLST

iTrader: (32)

4000 fits in my Cyclone but a 5000 won't fit since it's bigger than the orion 4800 and that barely fits. If I stick with my TC5 I can run a 5000.

dodgeguy

iTrader: (208)

That sucks, the 5000 pack is probably a better pack when compared to a sub C. i have a Type R and I am not going to be modifying the car to make the 5000 work. So unfortunately I am going to go with another brand of LIPO.

STLNLST

iTrader: (32)

from the testing we have done and the torture tests results my boy Ling has done this is the pack to have. I'm wishing the 5000 would fit but the 4000 is still better than anything we've seen on the track. Until I get my doors blown off with something else there's no reason for me to look elsewhere.

John Tag

iTrader: (42)

Xpress

iTrader: (3)

What are the dimensions for the 4000 and 5000 packs?

Ted Flack

From page #1:

We expect our new 28C Lipos to be shipping out to the distributors on the 28th of February.

28C/4000/7.4v

Part # 4028LD (Deans connector) 4028LT (Traxxas connector)

Retail: 160.00 Estimated street price 105.00 - 125.00

Size: L 136mm x W 46.5mm x H 20.5mm

Weight: 240 grams


28C/5000/7.4v

Retail: 195.00 Estimated street price 135.00 - 150.00

Part # 5028LD 5028LT

Size: 136 x 46.5 x 24.5

Weight: 290 gr.

Jack Rimer

The 4000 should still outperform almost anything else on the market... Unless you need the runtime. The 4000's run about 4100-4200 in capacity, FYI.