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Old 12-18-2008, 07:49 AM   #46
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most of the guys i get reports from use around 200 to 300+ ma per minute. the average amp draw in a 1/8 buggy will only be about 15 to maybee 25 amps depending on what size and type track and of course motor selection. peak amp draw can get around 100 but only for a split second.
if you have a 5000 mah pack and you can go 15 minutes you are only averaging about 20 amps. and that is if you are dumping the pack not just running it down to a safe level.
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Old 12-18-2008, 08:15 AM   #47
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most of the guys i get reports from use around 200 to 300+ ma per minute. the average amp draw in a 1/8 buggy will only be about 15 to maybee 25 amps depending on what size and type track and of course motor selection. peak amp draw can get around 100 but only for a split second.
if you have a 5000 mah pack and you can go 15 minutes you are only averaging about 20 amps. and that is if you are dumping the pack not just running it down to a safe level.
That makes for an interesting point. Right now the ROAR rules call for 10 minute mains, if it went to 15 then it would effectively act as a speed/power limiter as you would only be able to make time with milder motors. I have read plenty of reports of guys going 20 minutes on 4s/5000 setups and that track size/surface makes a huge difference, more so than other classes/types of electric racing.
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Old 12-18-2008, 11:51 AM   #48
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That is correct about track size and configuration making a huge difference. Out here, I can easily dump a PolyRC 6000mah lipo under 20 minutes in the winter on a large track. When we get outdoors, I can swing 20 minutes.

A 4900mah 4S pack I have dumped in about 13 minutes on the indoor track. this is why I like the 10 minute main thing and think a 5000mah 4S pack is a great starting point to go with.

One other thing I would ask, can you make your packs such that there is zero cell shifting from the rigors of racing? I have seen in a variety of softcased lipos that with the current crop of trays used, the cells themselves will shift a bit. Not sure how much could be done short of a hardcase of shrinked in case like Maxamps offers, but figured I would ask.

It would be cool if someone made a connector using the same kind of plugs that Castle Creations includes for there Mamba Monster.
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Old 12-19-2008, 02:07 PM   #49
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Sorry, a bit of a hijack:

Can anyone give me the dimensions of the SMC 4900 hardcase saddle pack LiPo? Thanks

Edit: Also the weight
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Old 12-21-2008, 08:44 AM   #50
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Hi Dan,

Any idea when the 4S soft pack will be available and an estimated price?

Thanks and best regards,
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Old 12-21-2008, 05:53 PM   #51
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Deans it is. We ordered some packs and when I have a better idea of when they will be available I will post info here.
When ever they come in put me down for 2.

Thanks,
Joe
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Old 12-27-2008, 10:46 PM   #52
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Any new info??????
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Old 12-28-2008, 10:53 PM   #53
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Our 4S/5000/40C+ softacase pack should be in stock by the end of January. I will have pricing figured in in a few days.
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Old 12-28-2008, 11:00 PM   #54
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Were still trying to figure out the size we want to use for the hardcase pack.

I'm thinking that H43 x W48 and L160 would be a good size that should fit most cars. The height can't be more than 43 due to the limitations of the body and the length can't be more than 160 for it to be ROAR legal. So this size would seem to make the most sense.

What do you guys think about this ?
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Old 12-28-2008, 11:42 PM   #55
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Sounds great.
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Old 12-29-2008, 12:15 AM   #56
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It would be nice to see the max height a little closer to 40-41mm. A D8 with a losi battery tray and stock D8 body has 41-42mm of clearance.
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Old 12-29-2008, 04:11 PM   #57
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Thanks for the info. This is one reason why were reluctant to do a hardcase pack for 1/8th as there is no standards at the moment. Right now there are different trays/room from different conversions and then the car compnaies are releasing cars that will probably have different size/room. Our goal is to have a pack that will fit most cars but it will be impossible for it to fit all cars.
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Old 12-30-2008, 05:59 AM   #58
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H40 x W48 and L160 should fit 99% of the cars out there.
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Old 12-30-2008, 09:32 AM   #59
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At 40mm we will not be able to get the capacity to be 5000 with 40C+.
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Old 12-30-2008, 09:39 AM   #60
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How about 43mm?
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