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Old 01-08-2002, 12:53 PM   #286
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Thanks for the Happy Birthday.
My gift is driving 10 and a half hours back to VA today.


trays with diodes seem to be good. If you plan on deadshorting I would use a tray without diodes because they bring down the cells into the millivolts.
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Old 01-08-2002, 02:10 PM   #287
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Quote:
Originally posted by Danny/SMC
Cole Trickle: Don't store your Hv with charge in them. Just follow the maintenance tips provided on this thread and you will be o.k.

Traying them will help keep the voltage up but it will hurt the runtime a bit.
Thanks.

I'm running stock class, so voltage is more important than runtime.
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Old 01-08-2002, 05:34 PM   #288
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I just got two Team Orion Racer packs for $60 each and these are the specs on one of them:

365sec
1.140 Volts
30 amps

Not bad for not the best pack Team Orion makes (i think their best one is the "Team" version.) I expect more in modified class compared to my 2400's.
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Old 01-08-2002, 05:58 PM   #289
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Quote:
Originally posted by Aurra Sing
I just got two Team Orion Racer packs for $60 each and these are the specs on one of them:

365sec
1.140 Volts
30 amps

Not bad for not the best pack Team Orion makes (i think their best one is the "Team" version.) I expect more in modified class compared to my 2400's.
If you have Orion packs then you should replace that LRP logo on your AVATAR
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Old 01-08-2002, 06:08 PM   #290
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Maybe he uses LRP speed controls
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Old 01-08-2002, 06:28 PM   #291
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Quote:
Originally posted by Danny/SMC
schurcr: I don't really know what to say. We are using HV's with great results. In Cleveland we used 1 pack per driver and we charged them at 8 with a .07 peak detect. Try to get it to peak 5 minutes before your race and repeak with the same settings. We didn't tray the packs.

8amps is very high, are you guys running stock?? At 8 amps runtime would be affected greatly, agree yes / no???.
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Old 01-08-2002, 11:05 PM   #292
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black-night: Yes 8 amps was used in stock but in mod when you have the right motor setup and car setup you shouldn't dump HV's. So a higher rate will equate to more power.
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Old 01-09-2002, 12:14 AM   #293
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Happy Birthday Danny!

I have a few question I would like to brought up to you.

What is the maximum temperature a HV cell can handle without damaging the cell?

When you repeak the cold cell (charge overnight), it is true that it can damage the cell? I heard discharging it for few second will lengthen the life of the cell as well as the performance?

Thanks.
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Old 01-09-2002, 12:27 AM   #294
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Danny, any feedback on the setting for HV cell on Protrak charger?
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Old 01-09-2002, 09:44 AM   #295
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xray: I'm not sure of the max temp. but at a big race 1 month ago we dumped a pack in 3 minutes so that equates to 55 amps or so. Both layers of shrink melted and the pack was extremely hot. You couldn't touch it with your hands. The next day I put a cycle on the pack and the numbers were the saem as the previous cycle. In our matching process the cells will reach 195-205 degrees Farenheit. We have also found that the cells perform better when they peak around 135-145 deg. F.


I'm not sure if charging the night before hurts the cell but I can tell you that it hurst performance. For max performance the pack should charge just before your race.


I'm not sure how the Pro-Trak measures it's peak detection but I would set it at .07 volts.
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Old 01-09-2002, 10:04 AM   #296
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Default charge time

Danny, I will probably get some of your cells but it may be a while as I need a charger too. I will probably get that integy 16x9 as it is dual voltage and I am stationed overseas and can use it any where. If I set it at a charge rate of lets say 6-7 amps which you say is good, what sort of chrage time are we looking at? I am curious so I can plan my charging to peak just before my races I would hate to get caught out with out a good pack. And can you charge earlier in the morning before you go to the track lets say then peak the pack just prior to the race?

Last edited by Buda; 01-09-2002 at 06:47 PM.
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Old 01-09-2002, 11:18 AM   #297
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I use LRP Speed Controllers.

Anyway, i aven't assembled my 3000's yet, i'm waiting until my first race of the season on February.

But when I do assemble and start charging it for the first time (I have a Novak Millennium Pro), what should I do? Just start charging them, or discharge them first, etc? I don't want to mess them up!
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Old 01-09-2002, 04:11 PM   #298
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Default RE:HIGH CHARGE RATES FOR HV's

so i thought i'd try danny's suggestion of charging the hv's @ a higher amp rate, and to be perfectly honest, i wasn't disappointed. i charged @ 7 amps. the car felt incredibly punchy and remained so for the duration of my race (5 minute stock) when i used 5 amps, the car felt a little flat. now as for durability, that remains to be seen. i've only been doing this for the last 2 weeks.
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Old 01-09-2002, 04:37 PM   #299
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Danny Ė Personally, Iíve had a very low opinion of the on-track performance of all the NiMH cells up to now (I race 1/10th GTP Pan Car stock) and have stuck with 2400ís but his thread has convinced me to try a pack of the 3000HVís. What I want to know is, how big of a performance difference is there between say, 7 and 9 amps on the charge rate? My charger will only go up to 7 so Iím interested in knowing if Iíd be missing something.
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Old 01-10-2002, 09:36 AM   #300
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Buda: At 6 amps it should take 30-33 minutes. For maximum performance it's best to charge the pack right before your heat.


MarkA: I don't race enough to know the exact difference but what I would do is try a pack a few times at 7 and then ask to charge it at 9 on someones charger and see if you feel a big difference.
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