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Old 09-28-2008, 01:05 PM   #1
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Default How much Lipo for Stock?

I'm looking at the upgrade to lipo, as it's just been made legal here in Aust

How much capacity to I need for stock class (17.5 brushless)? Would the Team Orion 2400mAh Experience packs be enough capacity for a 5 minute race?

From what I'm reading the lipos dont fade out, so do I really need the higher capacity? Besides, the price is right atm $30~ plus shipping

Anyone?
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Old 09-28-2008, 01:18 PM   #2
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Personally, I'd stick with something with at least 3200 mAh of power to run the 17.5

I have tested the 2400 w/ the 17.5 for OVAL racing, and it WILL run it, but it does pull the voltage down pretty hard (Compared to the higher packs)

If you were racing against ONLY 2400's, it would be perfectly fine - but not if others can run bigger stuff. At least IMHO
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Old 09-28-2008, 02:10 PM   #3
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The price makes it hard to beat. A higher capacity battery will maintain a high average voltage over a given amount of time. Just look at your budget and a what personal level you'll be racing at and go from there.
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Old 09-28-2008, 02:24 PM   #4
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I see most people running a 3200-4000. I use a 3800 and can get 15-20 min with a 13.5
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Old 09-28-2008, 03:48 PM   #5
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I recommend the orion 2400s or the 3200s. I use both and they both have the same power delivery in my opinion. They both last 5 min races.
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Old 09-28-2008, 03:58 PM   #6
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I run an Orion 3600 with brushed stock, and it's consistent through five minutes. Should be more than enough for brushless.
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Old 09-28-2008, 05:29 PM   #7
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I ran a foam/carpet touring car 13.5 class with tuned rotor.

3200 Orion worked well.
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Old 09-28-2008, 05:43 PM   #8
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I run a 5000. Guess that's a bit of over-kill, huh. But I've ran it though practice, two heats and main on one charge.
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Old 09-28-2008, 05:57 PM   #9
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The higher the pack's capacity, the higher your voltage will be at the end of a given period. Therefore, run the largest capacity pack you can. I ran the Orion 3600/3800 packs (nice); but, now run SMC 5000s (nicer). Basically, it doesn't matter which class motor you run.

They start out about the same voltage (being 8.40V) ; but, the 5000s finish with a higher voltage over a 5 or 6 minute TC car race.
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Old 09-28-2008, 05:58 PM   #10
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Might want to like into some Yeah Racing Lipo Batteries Both 3200 and 3600mah would be a good choice.

Quote:
Originally Posted by Dan the Man View Post
I'm looking at the upgrade to lipo, as it's just been made legal here in Aust

How much capacity to I need for stock class (17.5 brushless)? Would the Team Orion 2400mAh Experience packs be enough capacity for a 5 minute race?

From what I'm reading the lipos dont fade out, so do I really need the higher capacity? Besides, the price is right atm $30~ plus shipping

Anyone?
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Old 09-28-2008, 07:43 PM   #11
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Dan the Orion one will work and should last a 5 minute main ok, I have the Intellect 3800 Lipo and have done 2 finals on one pack no dramas. Keep in mind though that a 2400 at 20C will only be able to give 48 Amps consistantly, wheras a 3800 Intellect at 25C can deliver a consistant 95 Amps, that all translates to punch.

The yeah racing packs suggested I don't believe are Roar legal yet?

Look at the Intellects, I think harris does them at $73 + ship, but the Orions will suffice however I am not sure the 2400 is roar legal yet either?
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Old 09-28-2008, 10:39 PM   #12
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Quote:
Originally Posted by Still Bill View Post
The higher the pack's capacity, the higher your voltage will be at the end of a given period. Therefore, run the largest capacity pack you can. I ran the Orion 3600/3800 packs (nice); but, now run SMC 5000s (nicer). Basically, it doesn't matter which class motor you run.

They start out about the same voltage (being 8.40V) ; but, the 5000s finish with a higher voltage over a 5 or 6 minute TC car race.
Exactly right, I have both the Orion 3200(which I mostly got for my Tamiya Mini, but have tried it in my more serious cars) & the SMC 5000, & there's no comparison. For spec-type racing(like a 13.5 or 17.5 class, or brushed stocks, etc.) you need all the voltage you can get, & so far the SMC seems to be the best at that, from beginning to the end of a race. I know they all start at about 8.4 volts, but the 3200 still doesn't hang on to that voltage as well as the load from the motor picks up, while the 5000 retains more of its voltage with the load on it. And that advantage becomes more & more pronounced as a race wears on, so if you can drive well( as in no real collisions with anything, & you have a good, clean racing line, can be smooth on a consistent basis), then you WILL benefit from the higher capacity pack. I'd reccomend something like the SMC 4000 or 5000, I think you'll be VERY happy with either(I know mine is about the BEST purchase I've made in quite some time)....
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Old 09-28-2008, 11:54 PM   #13
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Also keep in mind that the lower the capacity, the longer it will take to re-charge the pack for the next race. Since Lipo is confined to a 1C charge rate, that means you can only charge a 2400mah orion pack at 2.4amps. It will take a full hour to get back up to capacity after a main. If you were using a 5000mah pack, you could charge at 5amps and be ready in half that time (which translates to more battery cool-down time)...
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Old 09-29-2008, 12:18 AM   #14
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when looking for a lipo, consider a higher mah over a high C rating any day.

you get a less stressed, longer running and punchier pack with higher mah.

I have a 6000mah pack softcase that I use for club racing. I am able to go through at least four heats with one charge. Since there is usually six classes that run on the same track that gives me about 30-35 minutes to top up the battery, which is plenty.
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Old 09-29-2008, 08:54 AM   #15
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Also if you have to add weight to your car then you add less with a bigger lipo. I've seen as much as 4 oz. of weight added with small lipos.

Last edited by Lazer Guy; 09-29-2008 at 04:26 PM.
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