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Old 02-15-2005, 01:34 PM   #226
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speedxl: This is normal because IB doesn't cycle its cells. This means you get true virgin cells. GP cycles and grades their cells.


Rick: Glad to hear you may want to participate at such a race. I would like the race to be at the end of April or sometime in May. If you give me date that may be good for a couple of your top drivers we can set a date. This would be real good to have such a shootout.
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Old 02-15-2005, 02:06 PM   #227
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Quote:
Originally posted by Danny/SMC
speedxl: This is normal because IB doesn't cycle its cells. This means you get true virgin cells. GP cycles and grades their cells.


Rick: Glad to hear you may want to participate at such a race. I would like the race to be at the end of April or sometime in May. If you give me date that may be good for a couple of your top drivers we can set a date. This would be real good to have such a shootout.
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Old 02-15-2005, 02:22 PM   #228
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We have 4 and 6 cell SMC 35amp IB3600 packs in stock.

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Old 02-17-2005, 09:53 AM   #229
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speed: The battery business is always a risky business. The cell manufacturers try to make consistent batches but they will fluctuate.
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Old 02-17-2005, 11:03 AM   #230
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Quote:
Originally posted by rayhuang
Yes-and put it as close to Cleveland, Ohio as possible OH-and hot trophy girls too.
If you do it in Ohio, I know where you can find a decent announcer/race director. I also think the Gate would be a fantastic facility.
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Old 02-17-2005, 01:04 PM   #231
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http://www.theworldofhobbies.com/

This track is great size I think, not small like majority of carpet tracks you see, and it's close to me so don't have to drive that far.
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Old 02-17-2005, 01:10 PM   #232
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Thanks guys for all the track suggestions. We will do the race at an indoor carpet track.


Trying to find a date that is not to close to any other major race.
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Old 02-17-2005, 05:44 PM   #233
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Hi, Danny. Are you already getting info about the new IB3800? Thanks
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Old 02-18-2005, 01:11 AM   #234
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No info yet. I know IB is working on allot of cool things but i'm not sure about the 3800. As usual as soon as I have info I will post it.
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Old 02-20-2005, 04:16 AM   #235
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Quote:
Originally posted by V12
Dave
in what way is the power band different with the IB3600 in compare to GP3300?
I have found out that this cell has a huge power band over the GP cell untill 6.8 volts and after that the IB cell starts to drop off little bit faster than the GP cell .. but there is one thing that this cell likes is heat!! pre-warming these cells really makes a difference on the track... I have started to pre-heat them to 40 deg C for about 1hour prior to charging ...and they like to be about 70~75deg Cels before you hit the track a little hot... but the way these cells are made is different than the way GP or Sanyo .. (metal is a bit different).. Also one thing too.. if these cells are cold they tend to run like...well A$$ ... so I`m going to try to srink wrap all of my Intellect packs and see if that can help keep some of the heat from leaving the cell when on the track...due to the wind going across the cells when driving..
they tend to come off the track at about 50deg C when I run them right off the charger... but if I let them sit for about 5 mins before I run they are at about 60deg C and they come off the track at around 40~43C and they run very different... this cell is very strong for 19T and up... not too much mod testing ass of yet but I have put a couple of 4 cell packs together that I`m testing with my 1/12 car
more testing to come
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Old 02-20-2005, 08:09 AM   #236
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Danny, Dave, or anyone else that is doing extensive testing of the IB cells, I have a question. Please give your feedback or possibly even try this and tell us the results.

First of all, let me state that I run stock and 19t on road TC. Most of the racers I know race the same- even in off road. With that in mind and looking at SMC's website and many others, you will see that Danny and most of the rest are separating packs for mod and stock. Obviously, the stock/19t racers like myself don't really care about the last 600maH of the pack. Here's why:

19t TC we average around 28-30A (at the most- probably less) draw over a 5 minute run so let's do the math-

30A x 5min = 30,000ma x .083333h = 2,499.999999maH

Add in a couple hundred maH for scrubbing the tires or a hot lap, and you have around 2700maH. Most GP3300's are averaging 3200-3300maH over a 30 or 35A discharge curve. So in all actuality we don't care if the pack has 5500maH because the only part of the curve we are using is the first 2500-2700maH. For those raeding this that don't know, we really DO care because the higher the maH, the longer we stay high in the discharge curve... aaaanyway, so if we were to take the cells we know are good for stock/19t (which basically are the cells which are substandard for mod runtime) and looked at the first 2700-3000maH wouldn't we be able to tell more about the info that WE need to know?

HOLD ON!!! I know what you are thinking- we won't be able to compare apples to apples, we can't look at our old packs and tell blah blah blah. STOP. Now drop your "old school" thinking and think outside the box for a second. Who cares about comparing to the current stuff? They will still have to cycle the cells at .090 cutoff to weed the mod cells from the stock/19t cells, so they can put those numbers on the cells or the package or where ever- let's look at the information WE need.

Here's my reasoning- I've always felt this way, but the discharge curve for all the batteries from the last few years have been fairly similar. But the IB cells are different. They have a great first three quarters discharge curve but the last part of the curve is goofy. So we honestly can't look at the average discharge numbers and tell what the cells are going to do compared to our current GP3300's. We can verify this even on our CE chargers because the AV numbers are quite different at .90 and 1V- this tells you the cells are staying between .90V and 1V for a long(er) time than what we are used to seeing. Now, let me take this to the extreme- Say I have a cell that is 4500maH. For the first 3000maH (or 3aH), the cell has some phenomenal voltage numbers like 1.25AV, but the last 1500maH, the cell suddenly drops to .95AV and stays there until 4500maH. Now it doesn't take a rocket scientist to see that in mod the pack would rock the first 3 or 4 minutes, but the last minute it would be sheot, right? But in stock or 19t where it stays in the awesome 1.25AV for the whole 5 minutes, it would be unbeatable!

Now for the question I need someone lioke Danny to answer- how do we cutt the discharge average off at the 3000maH in a way that would be a good standard to look at all stock/19t packs or cells?
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Old 02-20-2005, 08:31 AM   #237
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Isn't that how Novak is doing theirs??? (I forget which company was advertising this method...I thought it might be Novak..it might be Reedy or one of the others) Reading average voltage for the first 5 minutes of discharge?
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Old 02-20-2005, 11:03 AM   #238
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Jason: I understand where your coming from. In mod oval our racers that have tested the IB3600 have not seen anymore drop in lap times with the IB compared to the GP cells.

If you own a GFX you can take a few points of the voltage curve and do an average. Example: 5 , 80 , 155 and 230 @ 35 amp discharge or 5, 105, 205 and 305 @ 30.
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Old 02-20-2005, 11:39 AM   #239
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Quote:
Originally posted by Danny/SMC
Jason: I understand where your coming from. In mod oval our racers that have tested the IB3600 have not seen anymore drop in lap times with the IB compared to the GP cells.
Is this comparing the IB 3600 to the GP3300 or the GP3700.
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Old 02-20-2005, 11:51 AM   #240
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It can be used to compare any voltage of any cell. This is just a way of looking at the usable voltage for stock.
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