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Old 06-13-2008, 06:20 AM   #1246
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That only helps with the pucker factor.
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Old 06-13-2008, 07:06 AM   #1247
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Originally Posted by NUCRPTRACER View Post
Since we can run lipo/21.5 I assume we can run 6-cell 4200/21.5 correct.....I love this class....

NO. 6-cell NiMh packs are NOT allowed. The rules are VERY specific as to what is legal.
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Old 06-13-2008, 07:17 AM   #1248
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I'm a stock motor 4 cell TA racer and haven't paid much attention to anything brushless or LiPo batteries for 1/10th scales.

Without getting into the specifics of what batteries and spped controls are best what is the ballpark retail cost of converting my TA's power plant into a 21.5 brushless/Lipo setup?
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Old 06-13-2008, 08:18 AM   #1249
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Quote:
Originally Posted by chicagokenji View Post
I'm a stock motor 4 cell TA racer and haven't paid much attention to anything brushless or LiPo batteries for 1/10th scales.

Without getting into the specifics of what batteries and spped controls are best what is the ballpark retail cost of converting my TA's power plant into a 21.5 brushless/Lipo setup?

I couldn't find a 21.5 on tower but this is close...get you in the ball park. Of course there are other vendors out there and prolly cheaper options. I'm happy w/ all my novak brushless systems and Orion packs.

GTB + 17.5 266$
Orion 3200 85$ *lighter!
Orion 3600 99$

*I recommend a balancer.

I'm using this charger & balancer for my lipos. works well and cheaper than orions higher end lipo chargers.
Team Orion Avionics Advanced Flight Charger 80$ and Team Orion Stability Balancing System 48$

You may want a lipo sack 20-25$ but if you take care of the packs they shouldn't go boom on you.
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Old 06-13-2008, 08:20 AM   #1250
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Ops... double posted.

You should also see what you can find on the fitment of various lipo packs on various chassis...some chassis made require mods. There was a thread on lipo fitment around here somewheres...

I know the orion 3200s fit fine in the TC4s....FT or tub chassis.
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Old 06-13-2008, 08:34 AM   #1251
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I hope the Orion 2400 gets ROAR approved. Quality cells at a very fair price.
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Old 06-13-2008, 08:41 AM   #1252
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Quote:
Originally Posted by chicagokenji View Post
I'm a stock motor 4 cell TA racer and haven't paid much attention to anything brushless or LiPo batteries for 1/10th scales.

Without getting into the specifics of what batteries and spped controls are best what is the ballpark retail cost of converting my TA's power plant into a 21.5 brushless/Lipo setup?
Kenj- You can go with the XBR/21.5 combo as well and save about $50, I am sure Jim could give you more details on pricing. My TC4 at 4.3 FDR and the Reedy 3200 is on pace with 4cell/17.5, the driver isn't though
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Old 06-13-2008, 01:55 PM   #1253
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NO. 6-cell NiMh packs are NOT allowed. The rules are VERY specific as to what is legal.
Well that doesnt make much since at all.....
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Old 06-13-2008, 02:36 PM   #1254
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Lipo and 4 cell nimh are close on weight. The 6 cell Nimh is quite a bit heavier, so then you need lighter parts to get back down to weight...$$

More cars will be competitive when the batteries are close in weight. I think almost every car out there actually needs lead with the current weight rule and batteries.
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Old 06-13-2008, 02:58 PM   #1255
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can you better explain not allowing nimhs 6 cell packs with the 21.5 motors? Just seems alittle odd.

Also, what is the reason for 5000mah limitation on the lipos? As I understand it, the checkpoint 5400mah hardcased lipo is roar legal.
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Old 06-13-2008, 03:14 PM   #1256
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Woo Hoo lipo!! Best part of all is there is options for the old with the new... want to run a brushed motor... go for it... Nimh... there it is... and now lipo. As far as the 6 cell Nimh with 21.5, I don't think the idea was to add another brushless motor to the mix but to allow lipo use.
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Old 06-13-2008, 04:09 PM   #1257
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Quote:
Originally Posted by robk View Post
Lipo and 4 cell nimh are close on weight. The 6 cell Nimh is quite a bit heavier, so then you need lighter parts to get back down to weight...$$

More cars will be competitive when the batteries are close in weight. I think almost every car out there actually needs lead with the current weight rule and batteries.
Quote:
Originally Posted by padailey View Post
Woo Hoo lipo!! Best part of all is there is options for the old with the new... want to run a brushed motor... go for it... Nimh... there it is... and now lipo. As far as the 6 cell Nimh with 21.5, I don't think the idea was to add another brushless motor to the mix but to allow lipo use.
I think this explains most of the "lipo only" rationale for the 21.5 motor
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Old 06-13-2008, 05:01 PM   #1258
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Quote:
Originally Posted by NUCRPTRACER View Post
Well that doesnt make much since at all.....

makes perfect sense, it's the rules. And it's one less thing to try to police for compliance
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Old 06-13-2008, 05:37 PM   #1259
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Quote:
Originally Posted by robk View Post
I think this explains most of the "lipo only" rationale for the 21.5 motor
Are lighter parts banned by the USVTA rules, or is it an overall weight thing?

How does allowing 6 cell NIMHs add another brushless motor to the mix? Seems you are just adding another battery option to the mix.
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Old 06-13-2008, 05:40 PM   #1260
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Quote:
Originally Posted by losi nut View Post
makes perfect sense, it's the rules. And it's one less thing to try to police for compliance
Exactly how hard is it to police a 6 cell nimh battery pack??
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