Lipo and Quark questions - RC-Monster Forums

jhautz · 01.20.2007, 03:10 PM

I did what you are trying to do for a while untill I upgraded my charger. You just have to make sure both packs are topped off, balanced and show the same voltage per cell when you start. I never had any issues, you just need to pay a little closer attention when chargeing and balancing is all. BTW. I have a few sets of the TrueRC 8000 3s+2s setup and really like them for the $$$. Let us know how they work out for you.

Also with the 977 you can charge both packs at once. It has 2 outputs and they can be used at the same time. The 977 limits the amps youc can charge lipo with to 4 amps on a 3s pack and 3 apms on a 2s pack. But it can handle running at this load on both outputs at the same time. That should cut down you charge time a little.

As GD said, the 989 is a really nice upgrade. You can then charge with a Y adapter and a modifed 5s balanceing tap and charge them at the same time as 5s packs.

phidailo · 03:25 PM

I don't exactly understand how to make sure they are both equal in voltage. For example, the 3s (first charge on them) went to 3200mah charge and stopped when the voltage read 12.39. I am using this balancer http://2dogrc.com/ecommerce/os/catal...er-p-1993.html

So you mean just take the voltage reading from charger and divide by 3 cells and make sure this equals the same for 2s voltage per cell?

The girlfriend is getting 989 for me next month :)

jhautz · 01.20.2007, 03:28 PM

Yes just charge them both all the way up and balance them. Then check the voltage. Take the 3s pack and divide by 3 and take the 2s pack voltage and divide by 2. They should be equal within .05V for a well balanced pack.

phidailo · 01.20.2007, 03:44 PM

thank you :)....I will let you guy know how they do, plus I upgraded from 9xl to neu 1515 (1700kv)

jhautz · 03:50 PM

Quote:

Originally Posted by phidailo

thank you :)....I will let you guy know how they do, plus I upgraded from 9xl to neu 1515 (1700kv)

Your whole system will run much cooler. Great ugrade. Plus the Neu will feel like it has more low end grunt if you can believe that.:027: Top end will be pretty much the same.

What ESC are you running? Quark I'm asuming...

phidailo · 01.20.2007, 04:10 PM

I have the quark125. I only have 16 and 20 pinion but think 18 will be perfect. I tried the neu on 16 cells gp3300's and can notice the cooler temps and a little bit on low end.

phidailo · 01.20.2007, 06:11 PM

Had a chance to run the lipos for about 5 minutes with the Neu and I am truly amazed. There is so much power and acceleration. I am running 51/20 but going to go down to 51/16 next time.