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Nealkot
06-12-2012, 01:52 PM
Hey Guys,
Im having this classic battle between voltage and motor to achieve more speed, and looking for some advise. I am running a Mystic with an SK180, 1500 kv (MG) motor, and Hyperion 5000, 45c batts.(2 cell, in series). I have 6mm bullets on everything. I have 3 props: x642, m445, grim 42x55 all s/b/p. I have it running pretty well with little to no bounce at speed, and im getting about 43 mph with the m445, a couple mph less with the other two props. I am ready to go faster! I have been doing alot of reading (daily) on this forum, and just have a couple questions to help me decide which way to go. First off, i have a 3 cell hyperion same mah and c and i was wondering if i should try to run 5s without disabling the bec on my sk180. Second, If i decide to just motor up and stick to 4s... I noticed alot of you are running parallel set ups on the bigger motors. I have 14- 2s batts. all wired with bullets, so i would like to keep running in series. Is that gonna cause any problems? Im thinking of maybe going with a UL-1 motor, or a leopard 3674 2200, or a leopard 4074 2200 if i stick with 4s. So i guess it all boils down to this, if i am trying to keep running my batts in series, should i go with more voltage or more motor to achieve more speed efficiently? Thanks in advance for any input!

wht73
06-12-2012, 06:37 PM
I think the higher the voltage less kv motor. I think the max rpm is 30k. I ran my mystic w/ 2 14.8 batts and it makes the boat heavy. That and they are a tight fit.

Rumdog
06-12-2012, 06:43 PM
Run 5s with the bec enabled and your smallest prop (42x55). It'll be quite a bit faster and should be a safe setup. Just keep an eye on motor temps.

Heaving Earth
06-12-2012, 06:44 PM
Run 5s with the bec.

Nealkot
06-12-2012, 07:01 PM
Thanks fellas, I'm gonna try 5s first and see what kind of speeds I get. Rumdog, I see you're in my state, I'm in Dearborn, if your in southeastern MI, maybe we could hit the pond sometime. Always looking for new FE fanatics to hang with.

wht73
06-12-2012, 07:10 PM
I did 38.5mph (gps) with the 2 14.8 lipo's with stock prop and HK 180 esc.

Should go a little faster with the 2p2c in series as it's lighter.

I think 5s should be even faster.