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Old 02-16-2005, 01:41 PM   #1
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Default GP3700 question

Will GP's 3700 batteries be legal for sanctioned racing? They are bigger than the 3300 series. Will that not automatically outlaw them?
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Old 02-16-2005, 01:53 PM   #2
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Do you mean ROAR sanctioned Regional & national events? i believe they have been submitted for approval, not sure? no matter what, they will sell, if there bigger, badder, and better.
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Old 02-16-2005, 01:54 PM   #3
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ROAR, EFRA, etc...
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Old 02-16-2005, 02:09 PM   #4
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In the EFRA they are allowed from 31th march 2005!!
Take a look at www.efra.se
Reg.
Markus
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Old 02-16-2005, 04:00 PM   #5
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I think they should just stay with 3300.3700, they say dont have as long runtime.Is that true?
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Old 02-17-2005, 04:37 AM   #6
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If the 3700 cells will be legal, and they are better, we should start thinking of how to proceed, considering the lenght of the races.
If we have more amps, we could crank our 12turn-eurospec motors up even further (more timing) for more speed. That will also increase wear and running cost.

I would prefer making races longer (like 8minutes). That would make us need to use less timing, so less wear on the motors, and give some more exciting racing, with more emphasis on racing strategy, at least in my humble opinion.
Think about it: 8minute pro ten racing, how cool would that be!!?
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Old 02-17-2005, 05:10 AM   #7
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I agree, we should start running 8min and free motors in all electric classes, now that would be cool!!
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Old 02-17-2005, 05:52 AM   #8
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He guys!!
Well, no matter what IB or GP brings out, we can get
everything to dump in 5 minutes!!
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Old 02-17-2005, 10:35 AM   #9
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Markus, that's exactly the problem: even with 12turns, we can make a 3700pack dump in less than 5minutes, and go silly fast over the track. But at what cost? One set of brushes, and a badly burnt comm!
I would prefer a longer race, so you are forced to put less strain on your motor! 1/12th is the best example: a TC is run with at least 6mm timing, a 1/12th scaler is run with 4mm timing-max. This way the motor survives longer, simply because otherwise you don't make 8minutes!
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Old 02-21-2006, 02:16 PM   #10
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I posted this in the 1/12th forum and didn't get much response.

I was racing 1/12th over the weekend, 19t Reedy Quad on Saturday and Reedy 12x1 on Sunday. The car was going soft at about 6 minutes, it was more noticeable in 19t as I then had to basically use full throttle round the whole track to keep momentum up. On Sunday it wasn't quite as noticeable but still lacked punch around the 6 minute mark and my times were about 2 seconds slower for the last few laps. My cells are GP3700 which are about 10 months old now, on Saturday I had 1000ma left in them and on Sunday I had around 600ma left discharging at 20A. So it doesn't seem to be a case of cell capacity but is it just that my cells are worn out now and thats why it's going soft? Motors were not getting hot either, just warm.
Just tested one of the packs voltages seem quite even at 6A,

at 1900ma
1.437
1.438
1.436
1.437

at 3800ma (peaked at 3850)
1.536
1.537
1.529
1.529

Similar story when discharging too at 20A so don't think it's a weak cell, don't know if those figures are good or bad though.

The only other thing is that I first noticed it in my first heat I had a very heavy impact at around the 5 minute mark, a marshall was stood in the middle of the track and I hit his foot at high speed and I noticed it after then but don't know if this is just a coincidence. I skimmed and changed brushes in motor to rule that out and tried different motor, the only other thing I could think of is the speed controller? Or is it just that the cells are old and tired? They are not dumping just going very soft around 5-6 minutes.
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Old 03-03-2006, 04:12 PM   #11
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The best cells are the new Team Orion GP3700Sp2 !
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Old 03-03-2006, 04:51 PM   #12
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Anyone know of a good reliable source for some GP3700SCHR loose cells. I had a cell vent, and my matcher doesn't have any more left in stock. I found some on CheapBatteryPacks.com?
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Old 03-03-2006, 04:56 PM   #13
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Call Traci at Team Orion USA
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Old 03-03-2006, 05:49 PM   #14
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I've talked to several matchers and they ALL said that the new GP3700SP2's give them EXACTLY the same numbers as the original GP3700's. The best cells on the market now are definitely the IB3800's. Highest voltage and most runtime for a ROAR legal cell.

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Old 06-21-2006, 12:03 PM   #15
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Hey guys, i race on stock, and here in Brazil just the gp 3700 are legal!
somebody knows which is the best gp 3700 cells for this class?
we race stock with 6min mains!
tks
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