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Old 12-10-2005, 03:20 AM   #46
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I have first generation IB3600 cells peaked around 3900 - 4000Mah. Second generation of IB3600 cells ( thicker can ), they peaked all the way up to 4300Mah, . I also have IB3800 and they peak around 4400Mah - 4500Mah. I'm charging with LRP Pulsar, 4.5A, 0.25mV.

My question : Is this IB4200 batteries are totally new batteries or just marketing things ?
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Old 12-10-2005, 04:05 AM   #47
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This is probably the only time I'm going to say this...... Technology is moving just a bit too fast......

It's getting pretty damn frustrating when they have just got the IB 3800 sorted, now what do they do..... make the 3800 outdated. Since it is basically the same size and weight, there is no disadvantage there, so there is a capacity gain. The voltage curve will be better for EVERY class I don't care what people say.

Now here is a question for Danny/SMC.....

If it is the same size as the 3800 mAh cell, didn't Roar approve the IP cell or weren't they going to ? Meaning that cell could be 1 mm longer ? If so, give it another few months and who knows. If they packed another 30 odd seconds of runtime into the same size cell as the 3800, what can the do with 1mm extra in length....
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Old 12-10-2005, 04:29 AM   #48
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With 1mm longer case probably max out at 4800-5000mah
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Old 12-10-2005, 05:41 AM   #49
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I here the "I remember when we used the red 1400's, Or the yellow and black 1700's" It makes me laugh as I'm sure the racers who are racing in twenty years will about the batteries now. My very first electric car(Associated RC12E) came with a GE 1000 mah stick pack and it got abused many times over with a charge cord. We had no idea a racer was supposed to own more than 1 battery pack so those batteries were charged till they hissed, Ran and then charged right back up without ever being taken out of the car. Poor things.

Technology is a good thing until the money aspect is brought into the picture. We could all still be driving our cars with two stick a.m. radio's if it were'nt for technology. Maybe with the new battries the new trend in r/c racing will be lap racing. Spectators always ask, How many laps do y'all run. Try explaining the 4 or 5 minute's and the lap you are on to someone outside of r/c racing and you'll quickly get the deer in the headlights look.
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Old 12-10-2005, 06:28 AM   #50
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Default Paul's runtime issues

Danny, you mentioned Paul having more than 30 sec runtime after a race (info from deiter) at cleveland. did jim happen to say what he discharged those 38's at?
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Old 12-10-2005, 09:05 AM   #51
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Quote:
Originally Posted by asw7576
I have first generation IB3600 cells peaked around 3900 - 4000Mah. Second generation of IB3600 cells ( thicker can ), they peaked all the way up to 4300Mah, . I also have IB3800 and they peak around 4400Mah - 4500Mah. I'm charging with LRP Pulsar, 4.5A, 0.25mV.

My question : Is this IB4200 batteries are totally new batteries or just marketing things ?
How much "mah" you put in during the charge doesn't mean very much! If you set your MV to a higher value your mah number changes! Much of the energy is dissapated off as heat in the charge cycle. If you don't believe me, try it. Or even put a fan on your cells while charging(not recommended) and the number of mah changes too! The only REAL capacity is when you dishcarge the cell cause thats how much useful capacity you can take out that matters!
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Old 12-10-2005, 11:36 AM   #52
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I cant wait to get some IB 4200's for 1/12 scale
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Old 12-10-2005, 02:19 PM   #53
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Quote:
Originally Posted by Danny/SMC
Here is the info that some maybe looking for on the IB4200. We were asked by IB not to release any info on the cell until Monday but guess some companies wanted to get the scoop first.

The IB4200 is the same size as the IB3800 and weighs about the same or 1 gram more than the 3800s.

Based on the samples we have gotten the specs will be 430+ , 1.20+ with IR of 1.7-2.0 @ 35 amps.

So for the racers who think that extra capacity is needed they can buy the new 4200s and for those who have no capacity related issues the IB3600 - IB3800s will be fine and will be the cells legal for most big races and ROAR sanctioned events.

We expect our first shipment to be matched up just before Christmas or the week after.

On another note SMCs online shop is now open. We have opened this shop to allow racers to buy our products when they have a tough time finding them locally. We strongly reccomend that you give your local track or shop the chance to sell you our products as they are able to offer them at the same price listed on our site and may have them in stock.
wow 4200's I must say it's really cool. Danny I think very highly of you but I have to disagree with yah because you know first hand how oval racers are and if the 4200 has a stronger voltage curve then we must have it.
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Old 12-10-2005, 02:54 PM   #54
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just a fast question....when you say they are 1.20+v..and 430 run time..thats saying they have 430 seconds before they drop from the 1.20 v+? right? any esamate on what the price change willl be?
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Old 12-10-2005, 03:01 PM   #55
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Quote:
Originally Posted by BiggAlz
just a fast question....when you say they are 1.20+v..and 430 run time..thats saying they have 430 seconds before they drop from the 1.20 v+? right? any esamate on what the price change willl be?

No, what it means is how long it takes to get down to .90 volts per cell from whatever it is when you start and the average voltage is 1.20, or whatever it turns out. So a 6 cell pack of 1.20's should be an average voltage of 7.20 for the pack.

I have some SMC packs that say 1.20 on the cell but when I cycled them as a pack they came out to 7.24.............pretty cool eh!


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Old 12-10-2005, 03:05 PM   #56
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Quote:
Originally Posted by nomaak
Danny, you mentioned Paul having more than 30 sec runtime after a race (info from deiter) at cleveland. did jim happen to say what he discharged those 38's at?

I believe Jim discharges at 30 amps but can ask him next time I talk to him.
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Old 12-10-2005, 03:10 PM   #57
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Quote:
Originally Posted by Jack2
This is probably the only time I'm going to say this...... Technology is moving just a bit too fast......

It's getting pretty damn frustrating when they have just got the IB 3800 sorted, now what do they do..... make the 3800 outdated. Since it is basically the same size and weight, there is no disadvantage there, so there is a capacity gain. The voltage curve will be better for EVERY class I don't care what people say.

Now here is a question for Danny/SMC.....

If it is the same size as the 3800 mAh cell, didn't Roar approve the IP cell or weren't they going to ? Meaning that cell could be 1 mm longer ? If so, give it another few months and who knows. If they packed another 30 odd seconds of runtime into the same size cell as the 3800, what can the do with 1mm extra in length....

I have tried to get in touch with ROAR to figure out what is going on with the cell rules and what will be legal in January but I cančt get in touch with anyone. I know that Europe is staying at 43mm and ROAR should stay at 43mm as well because it makes no sense for the US to have it's own size cells.

If the rule is truly 44mm guess IB will have to consider what they want to do.

About the voltage curve it makes sense in theory but in practice it's not always the case. The IB3600s we have in stock at the moment are abit lower in capacity then the 3800s with .005 or so less voltage. When you run the 3600s on the track they are just as fast.
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Old 12-10-2005, 03:13 PM   #58
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DavePull: The oval racers may feel they need to have these but it all depends on if tracks or the bigger races allow them. This may sound stupid as the importer of the cell but I think tracks and bigger races shouldn't allow them until September 2006 and we know that ROAR won't allow them. So as a racer just make sure you and your fellow racers get together and ask your local track not to allow them.
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Old 12-10-2005, 03:15 PM   #59
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Ted sorry I forgot about your packs at Cleveland. Just had so much going on and when I saw your name pop up on the result pages it made me remember so I got Paul to bring you some packs ASAP.

Man 7.24 never thought we would be seeing crazy numbers like these but looks like IB has got it figured out.
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Old 12-10-2005, 03:22 PM   #60
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When did it end?
It'll end when electric is dead and gone...
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