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Old 12-28-2004, 06:03 PM   #6226
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Plus you said you're using fans while charging?? like fans blowing on the pack? If you're using this method of charging, don't. It will cause the cells to be overcharged due to the charger will not detecting a peak and drop in voltage at the right time.

The results of this is a cool cell casing (outside of the cell) but the chemicals are boiling on the inside of the cells. This will result in a higher peak voltage reading as well. It can also cause cell damage and in the worst case a cell venting or exploding.

Go to www.fukuyamaracing.com for more info and tips on charging/discharing fukuyama GP3300 cells.

John
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Old 12-28-2004, 06:18 PM   #6227
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so dont use the fans while charging but they will get hot the over heat
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Old 12-28-2004, 06:41 PM   #6228
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You don't ever want to use fans on cells period. Not during charging, after charging, or after a run. Always let the cells naturally cool.
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Old 12-28-2004, 08:42 PM   #6229
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what about on tropical climates? here in asia it the weather tends to get really hot.

you guys wouldnt use fans cause its cold where you are. over here its hot so arent fans ok?
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Old 12-28-2004, 09:55 PM   #6230
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In hot, outdoor temps (like when I was at a parking lot race in Memphis, TN last July and the track temp was around 150,) I decrease my voltage peak slightly to let the cells come off a little cooler. Worked for me.

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Old 12-28-2004, 10:05 PM   #6231
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San Diego- Cold? Until yesterday when it started raining, we were having 75 degree days. Summer time temps get into the high 90's and 100+. We also race in the high desert in Hesperia. 100+ is not uncommon. Like Rob said, if the cells are getting too hot during charge, your delta peak voltage is too high and needs to be lowered. The cells should be around 130F when they peak. If they're higher, lower the delta so they peak off sooner.
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Old 12-29-2004, 05:57 AM   #6232
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I agree with what Jon and Rob say
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Old 12-29-2004, 06:22 AM   #6233
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Sorry to hijack your thread, John. Just couldn't control myself.

Rob
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Old 12-29-2004, 06:31 AM   #6234
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No problem buddy.

John
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Old 12-29-2004, 07:25 AM   #6235
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Yeah, we'll allow ex Fukuyama guys to chime in here once in a while.
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Old 12-29-2004, 07:37 AM   #6236
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Jon - What's the deal with #8????
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Old 12-29-2004, 07:56 AM   #6237
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Yeah, Jon, what's with the #8?

Thanks for not giving me the cold shoulder, you guys. lol. I'm always lurking.

Hope your Christmas' were good and have a wonderful New Year.

Oh yeah, if you make it out this way to see family, bring your stuff. Make sure to grab a Monster Stock/19T and some TakeOff 22's and you'll have a handful of places to race near El Reno. I'll meet you where ever's closest.

Rob
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Old 12-29-2004, 08:18 AM   #6238
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I've been trying to get Jon to come visit and race for awhile. Now that I've seen his 8 stuff he's even more welcome
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Old 12-29-2004, 09:33 AM   #6239
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JR is the man! I'll talk to some relatives and see about a trip this coming summer. Maybe even get them to come to the track. Last time I was out there was summer 2003 right after the Reedy Race and I didn't even think to look for any tracks in the area until the last day we were there. (We were a little preoccupied with the reason for the visit) I'll let you guys know what's up.
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Old 12-29-2004, 09:37 AM   #6240
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Enid RC Speedway is the best onroad track in the state. Its like a little over an hour from El Reno.
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