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Old 09-14-2005, 06:28 AM   #16
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Thats odd,
I've had a completely differant experience. I use both type of cells and I still think that the IB's have an edge over GP.
Could it be the matcher? Just a thought.
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Old 09-14-2005, 06:37 AM   #17
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IB deff. has lower IR than a GP, I still toss a coin but both do proform real well

EX..IB pack #3 I have IR3800 as pack at 30a 12.4, GP 3700 14.1 at 30a..that fall true with all my packs the IB's all have lower IR's.
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Old 09-14-2005, 06:51 AM   #18
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@John:
Thats really strange John, all people that have matched or tested both cells, say something else here.

Just tell me why should the big matchers like Orion, GM, Hopf, Peak and so on should not use IB's than??
And why are all big races are won with GP's????
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Old 09-14-2005, 07:25 AM   #19
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Markus,

You really need to take a look at your Turbomatcher. IB's pull 1.9-2.1 on the IR and GP pull 2.2-2.6 on the IR (not 1.2-1.6). I match both brands and the IB cells have an edge on runtime and IR but the GP cells generally achieve slightly higher voltage.

There is no way the GP cells have an internal resistance of 1.2-1.6.
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Old 09-14-2005, 07:38 AM   #20
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Markus your correct..
The reason Orion,Peak and others prefer the GP is mainly I say not them.. There loyal as there GP distributers IB and GP are both great cells we also match batteries all day and work with both and IB hands down has lower IRs.

Like I also said there both good cells a coin toss.. but IB hands down lower IR's!
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Old 09-14-2005, 07:42 AM   #21
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That's funny... Orion has just released IB 3800's here in the US. We haven't had a batch that false peaked in over two months. The voltage numbers we are seeing are off the charts. Sales are through the roof. Repeat customers order more each time. Consumers are thrilled. Shucks, I guess we Americans are just plain dumb. Oh well, maybe some day we will wise up.
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Old 09-14-2005, 07:56 AM   #22
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Sorry Jack wasn't sure ya'll are now carring IB's I know you were 1 of the largest GP dealers... Great to see a major figure like Jack saying the same
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Old 09-14-2005, 07:58 AM   #23
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You know, this topic comes up all the time. I appreciate that Markus wants to help us out by warning us about the supposed shortcomings of the IB cell. It's good that someone is looking out for us. However, this debate will rage on and on. Only time will tell who is right. As long as our customers are happy, we're happy.
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Old 09-14-2005, 08:02 AM   #24
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Actually, I've been demoted from "major figure" to "lieutenant figure".
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Old 09-14-2005, 08:06 AM   #25
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Old 09-14-2005, 08:09 AM   #26
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Quote:
Originally Posted by cannon
Markus,

You really need to take a look at your Turbomatcher. IB's pull 1.9-2.1 on the IR and GP pull 2.2-2.6 on the IR (not 1.2-1.6). I match both brands and the IB cells have an edge on runtime and IR but the GP cells generally achieve slightly higher voltage.

There is no way the GP cells have an internal resistance of 1.2-1.6.
3700s are making numbers of 2.0-2.3 AIR at 35 amps on our matchers.

I don't think the biggest plusto the IB is slightly lower IR, its runtime... Mod racers will certainly be attracted to the IB cell because they show so much more over the GP.

The 3700 does seem more durable then the IB cell...

Aside from these two cells, has anyone seen the IP cell? (Yes, I said IP)
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Old 09-14-2005, 09:06 AM   #27
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Wow I wake up to read this great debate.

I really like it when guys drop by and say that GP has better IR then IBs. Drivers like Josh Cyrul has tested both the GPs and IB and he has confirmed that the IB are faster.


GP3700 on our TM4 at 35 amps are 375-400 seconds with voltages of 1.165-1.185 and IR of 2.1 - 2.4

IB3800 : 390-430 , 1.175 - 1.195 , 1.8 - 2.1

One thing to note is that IB has been tweaking the 3800 and it keeps getting better and better from batch to batch.

If you take IBs and compare them to GPs on the track you need to adjust your motor to compensate for the extra voltag/power of the IB cells. So far it seems like backing off on the amp draw by 1 amp or so is the way to go.
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Old 09-14-2005, 09:11 AM   #28
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Quote:
Originally Posted by ghuber
3700s are making numbers of 2.0-2.3 AIR at 35 amps on our matchers.

I don't think the biggest plusto the IB is slightly lower IR, its runtime... Mod racers will certainly be attracted to the IB cell because they show so much more over the GP.

The 3700 does seem more durable then the IB cell...

Aside from these two cells, has anyone seen the IP cell? (Yes, I said IP)

Hi Gary,

IP3800 cells are Grepow 3600UP cells which typically have the same capacity as GP3700 with a similar discharge profile to the IB cells. The current Grepow cells are to long so it makes them illegal for ROAR. Grepow has told us that they plan on reducing the size of the cell and in the past couple of days they said they wouldn't. So i'm not sure what is going on with them. In our track testing the IB3800's still have more availablevoltage in the first part of the discharge curve and this results in faster lap times up front. In mod the 3600UP cell is 25 seconds short on runtime.

Hope this helps.
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Old 09-14-2005, 09:12 AM   #29
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Danny/SMC : do you recommend step-charging the IB's or GP's?
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Old 09-14-2005, 09:26 AM   #30
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I'm sure that step charging will work o.k. but I can't seem to undertand why it would be better than linear charge. We have good results with a normal linear charge.
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