I am in the process of matching several thousand GP3300's. My questions are as follows:

1. What runtime figures and av. voltage are you getting from packs purchased o/s or here in Australia? There doesn't seem to be much matching done here in Australia anymore so that is why I have restarted matching.

2. Are you more interested in runtime or voltage. I know that this question depends on whether you race stock or modified but I would think that voltage is not as important as runtime to modified drivers as you can adjust with your motor choice.

3. I have tested several o/s packs with enormous av. voltage and my Turbomatcher doesn't even come close to their figures. Do owners of these high av. voltage packs notice any difference and how long do the cells last?

Any answers appreciated.

About the runtime or voltage preference, running substandard packs on the brushless makes a huge difference, whereas running the same packs on a brushed mod I hardly notice any difference at all. The motor seems to behave a bit more like a fast stock motor, so any packs I buy I'll be looking for higher voltage as runtime is never really an issue.

The big numbers could also be at a 20A discharge rate (which you probably know anyway) but this'll yield 1.18x - 1.19x type numbers, whereas mid 1.17x is more like it.

Im not really experienced in this type of stuff, but I will tell you have I have noticed, and what I want as a buyer.

1. My Orion packs are 418rt with 1.172av. These were purchased through HobbyX.

2. I personally would prefer voltage over runtime, but in saying that, I wouldn't a extreme voltage pack with no runtime. I would prefer a balance between voltage and runtime, or a little more voltage at a sacrifice of a little runtime.

3. To be honest, I can only really notice the difference between new cells and old ones. I had some older Team Orion race packs, and some 1st gen GP's from Yok (numbers like 390rt with 1.14av) and I cannot tell the difference in feel or lap times..

Hope any of that helps

John Rice


Oh, and goodluck with the matching

Andrew XXXS - some of the large av. voltage have come from 30A discharge packs. You realistically don't see many 1.17+ cells come through so I don't know how they can honestly achieve this many large packs. Runtime is an issue with the fast modified on road boys....thay can punish their cells.

Johnny J - Orion cells are matched on a Lavco and their numbers are always a bit higher than a Turbomatcher so it is difficult to compare.

they still Zapp cells dont they? ( i dunno anymore i've been outta the game for that long)

I'd imagine this is the difference between you're cells and the larger producers.

Volts is the only thing i look at when i'm buying batteries.

For stock voltage has always been the important thing. Charging at 6 amps instead of 5 amps will also give you a higher avg volt but you loose out in IR and Runtime, and they don't last as long etc.

Get yourself a zapper and see.

Gids

voltage all the way!

I have two GP3300 packs that have about ten runs on them, they are a team spec Orion (1st gen) and a top spec SMC (2nd gen), I did a 20amp dump on my CDC about 3 runs after I bought them, ten runs later, the orion pack had gone from 7.078 Va to 7.064 but dropped 1 minute of runtime, the SMC went from 7.000 to 6.896 and gained 1 second of runtime. Since I race stock the SMC numbers are a bit dissapointing, on the track there is a noticeable difference between them and the orion....the labels on the orion pack are 1.176/424, the SMC 1.172/415

Orion use competition electronics matchers these days...this is from a post by Rick Hohwart on the rccars forum, "Team Orion no longer uses Lavco equipment. All batteries are tested using custom CE equipment and have been for the past year." However the 'custom' part is probably where the unusual numbers come from....

Hi Cannon


Good to see a local guy putting something back into the racing market, i can only hope you have the same impact as you did all those years ago, bring back the pig labels


We all know numbers cant be compared, between manufacturers as each play their own games, i suggest having two ranges of packs high runtime, and high voltage. Personally in Mod i am VERY ham fisted with the throttle so runtime is always an issue, im sure there is a market for both ends of the spectrum.

If you can get them in the market for a decent price im sure they will be snapped up quickly, and look forward to seeing what comes out. All i can say from past dealings with you, put me down for a few packs.

See you soon

get a zapper, since you invested the money in so many cells its would be worth it. zapping also wakes up what could be dud cells

I believe cannon does have a zapper, but i would think only a light zap is required to waken them up, the brands that zapp the cells hard dont last very long, you get impressive numbers but shite life out of them.

If you re-read the original post i believe he has purchased some awesome numbered packs from some of the more respected matchers, and put these new "Brand name" cells on his machines and have not been able to replicate the numbers shown, resulting in lower numbers than the cells he is currently matching. Cannon correct me if i am wrong.

On ya Cannon, good to see you getting this project going.

I agree with you on the results of the great cells that I have purchased over the years. On the turbo 35 and GFX i have tested these on, the batteries dont have the same results as on the labels. (some thing you just accept)
I usually look for a balance of run time and voltage, but prefer the run time side even when I run stock.

just a thought on that, I've been doing a bit of reading up, and http://www.velocityfactory.com.au/ (aussie based) and they're cells get their numbers from single peaking and 30amp discharge down to 5.4 volts. Now Orion's cells have a triple peak, and a 30amp discharge, down to 5.1volts. I've also seen on a few Orion packs a 27amp discharge too??? Just a thought on why the numbers might be different, althought no one has said that the big names are full of shit, i dont think they are as such, but I have no doubt that a few of the bigger names are pulling some legs here and there.

Could the charge method' be why you aren't getting the high voltage and better runtime? How many amps are you charging the cells at? Try peaking 3 times and discharging at 27amps??

Ne other comments from other racers on other charging techniques??

Tim

Cannon- why invest so much in matching this Gen GP3300s when we are just about to enter another round of Battery Wars? Sanyo now have a 3600 and sure as God made little green apples there will be a new gen of GP cells to compete .
I do however applaud you for investing in the hobby.(locally).
According to the guru I spoke to the overseas matchers "zap the crap" out of their cells.
I've noticed that (in some cases) the higher average discharge voltage obtained is at the expense of runtime. The pack I have in mind hold its voltage simiarly(spelling?) to other packs but drops its bundle at 6.00vdc.
It should be remembered that "average voltage discharged" is a purely mathematical concept- its possible to have a cell/pack with more usable high voltage but that it gives a lower AVD reading because it hangs on in the lower voltage regions of the discharge as well.

Good luck with the matching-put me down for some cells(dont get to greedy)-

Also I can loan you a zapper if you need one.

Bersecoe - you are spot on. I do have a zapper as well. The run time numbers that these o/s cells have are quite accurate but the av. volts are way off when tested on my Turbomatcher. It is either my Turbo is very conservative or there are some big lies going around from o/s


Tim - I do not want to kill the cells that I am going to sell. The cells have a single repeak and 30A discharge. From all information available, numerous repeaks might get you an initial higher voltage but it ruins your cells. I'm sure as customers you do not want damaged cells purely for a cell label

I intend to make the return of the "pig" cells good for the racers. This means great prices.