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Old 10-20-2007, 01:36 PM   #1696
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...parallel cells do balance themselves I believe. If one is higher than the other...that slight amount of charge would try to trickle into the other cell until they are the same I believe... That's always what I've seen from every other type of battery system...
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Old 12-10-2007, 08:00 PM   #1697
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Any news on the heavier 6500 LiPo battery for off-road racing? Kind of quiet lately.
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Old 12-10-2007, 08:22 PM   #1698
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Any news on the heavier 6500 LiPo battery for off-road racing? Kind of quiet lately.
That or a nice weight of some type for pack. My car is about 8 ounces lighter with than with the 4200 nimh. I have added some weight but need something that fits in the top of the pack that is heavy. Anyone make something like this?
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Old 12-10-2007, 08:43 PM   #1699
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I've been using these, and had pretty good luck using them in a number of places. They're expensive, though.

http://maximum-velocity.com/tungstenplates.htm

I picked up some of the small tungsten cubes the sell as well. My plan is to mount them on the chassis (with shoe goo, perhaps) to hold the pack in place, similar to how the XRay battery retainer things work. Just put them at the corners of the packs.
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Old 12-10-2007, 08:47 PM   #1700
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I've been using these, and had pretty good luck using them in a number of places. They're expensive, though.

http://maximum-velocity.com/tungstenplates.htm

I picked up some of the small tungsten cubes the sell as well. My plan is to mount them on the chassis (with shoe goo, perhaps) to hold the pack in place, similar to how the XRay battery retainer things work. Just put them at the corners of the packs.
Wow that is pretty cool. Looks like what I'm looking for.
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Old 12-10-2007, 08:52 PM   #1701
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Wow that is pretty cool. Looks like what I'm looking for.
Yea, the only bummer is that you're pretty much stuck with the size of them. Trying to grind tungsten kinda sucks without whatever special gear you need. Probably lasers, diamonds, space ships, etc.
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Old 12-10-2007, 09:23 PM   #1702
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Yea, the only bummer is that you're pretty much stuck with the size of them. Trying to grind tungsten kinda sucks without whatever special gear you need. Probably lasers, diamonds, space ships, etc.
Good find on the tungsten weights. They have tungsten putty too?? Heck, I'm going to place an order for putty and fill the battery slots with it.

http://www.maximum-velocity.com/tungstenputty.htm
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Old 12-10-2007, 09:38 PM   #1703
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Good find on the tungsten weights. They have tungsten putty too?? Heck, I'm going to place an order for putty and fill the battery slots with it.

http://www.maximum-velocity.com/tungstenputty.htm
Let me know how well that works out for you. I was considering something similar, but wasn't sure how I'd secure it.
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Old 12-10-2007, 09:47 PM   #1704
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Here's another source of plates:

http://www.pinewoodextreme.com/detai..._number=418072

They're almost narrow enough to fit in battery slots.
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Old 12-10-2007, 10:55 PM   #1705
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http://www.tungstenheavypowder.com/T...hnon_poly.html

This looks to have a higher density than the tungsten putty. I was excited till I noticed the putty only had a density of about 7-8 g/cc

The poly kit above claims densities cloers to lead, around 11 g/cc. $80 for 2.2 lbs. Man that could do a bunch of cars if a few guys wanted to go in together at a LHS.

If I am not mistaken pure tungsten has a density somewhere around 19-20 g/c.

Would be nice to have some custom cut tungsten.
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Old 12-18-2007, 06:31 AM   #1706
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Hey guys,
thinking of getting a 3200 orion lipo battery. I've hade countless problems with Nimh batteries and want to go lipo.
Just a few quick questoins.
1) The battery should fit in any car that can take a stick pack right? So it will fit in a Tamiya Evo-5 without adjustments?
2) I've seen other lipos with a "balancing port" or something, and im not clear on what it is. Does the orion have one? Does it matter?
3) Im running a 540 motor with a Novak GTX esc. I've heard that it can damage the cells if the pack gets down below 6.0V, but im only running 540 and 5 minute races, so i dont expect that it ever will. Any advice?

Cheers
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Old 12-18-2007, 12:41 PM   #1707
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Quote:
Originally Posted by JollyJim View Post
Hey guys,
thinking of getting a 3200 orion lipo battery. I've hade countless problems with Nimh batteries and want to go lipo.
Just a few quick questoins.
1) The battery should fit in any car that can take a stick pack right? So it will fit in a Tamiya Evo-5 without adjustments?
2) I've seen other lipos with a "balancing port" or something, and im not clear on what it is. Does the orion have one? Does it matter?
3) Im running a 540 motor with a Novak GTX esc. I've heard that it can damage the cells if the pack gets down below 6.0V, but im only running 540 and 5 minute races, so i dont expect that it ever will. Any advice?

Cheers
Daniel
Hi Daniel,
To answer your questions:
1. Yes the Orion 3200 will fit.
2. The balancing port is used to make sure both cells in the pack are the same voltage. I check my packs before race day using a voltmeter. Just check the + to the balance port and the - to the balance port.
3. Just top the pack up between races. The pack can be charged straight away after each run. Charge it at 1C (3.2 amps) and it will be fine.
If your pack gets down to 6v the drop off in performance is noticible. Just stop running straight away.
I saw a guy at Whalan in mod do that and the pack puffed up like a pillow (it was a soft case Lipo pack). He left it and it went down again - but the pack was trashed.
Cheers,
Tony
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Old 12-18-2007, 12:47 PM   #1708
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Quote:
Originally Posted by r0adrunn3r View Post
If your pack gets down to 6v the drop off in performance is noticible. Just stop running straight away.
I saw a guy at Whalan in mod do that and the pack puffed up like a pillow (it was a soft case Lipo pack). He left it and it went down again - but the pack was trashed.
Cheers,
Tony

I use the Novak cut off. It gives me warning with the Lipo is low, then turns my car off. Works great....cheap insurance.
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Old 12-18-2007, 03:31 PM   #1709
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Arrow Has anyone compared the new Orion 3600 to the 3200?

Does anybody have feedback on the new Orion 3600 lipo battery vs. the Orion3200 Lipo. I heard that the 3600 is faster and has more punch.
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Old 12-18-2007, 06:12 PM   #1710
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Quote:
I heard that the 3600 is faster and has more punch.
Haven't run one yet - but based on construction and battery type, I'd think that would be a fair assesment...
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