Sweet figures there- lipos hold their voltage very well under load.

Only thing I might suggest changing on the MMM is the throttle setting- put it to forwards-brake-reverse/lockout. I didnt like it when the truck would slow down then suddenly go into reverse automatically...

I can't seem to get the 60mm 2000kv to run cool on 5s (pushing 190+), but on 4s, geared 15/50 the buggy rocks. Still a bit warmer than I like, 170 ish, but my timing is at Low (5), will set it to Lowest (0) and try again. 100% punch control, lowest start power setting, some curve in the throttle. :neutral:

Great Graphs! :yes:

Was this using 4S 20C 5000mah Zippys?

Thanks, yes. :) Imma buy 2 more Zippys since they seem to do just fine.

More than likely just too much voltage for that kv rating- 4 pole motors prefer (in principle, or my head atleast...) to be revved lower & geared taller to make your speed and power really. I think you'd be better of using 4s lipo and gear higher, or choose a lower kv motor (~1800kv region) for use with 5s to reduce current draw.

Yes, I agree. I thought I learned alot about kv and voltage. But after even more digging I learned even more.

So for my Hyper ST build on 5s I will select my kv carefully. Really wish the medusa's came in 1700kv.

Every good motor that's pushing some power is going to give off some heat.

For example:

Let's take 1000 watt motor that's 90% efficient. This means that all the time it's at the 1000 watt level (WOT) it's going to "bleed off" 100 watts of heat.

Running a smooth can motor with no heat sinking doesn't leave that heat much place to go. So, it builds up.

I've been having great success with the 36-60-2000kv in an E Revo gearing 18/52.

I'm using the Novak Heat Sink with it on 4S. I really believe I could run this all day long with no heat issues at all.

50 degrees outside and I can barely detect any heat at all coming from the motor. :yes:

If you have room, give it a try.

I do intend to try this on 5S AND on 6S. This will be the real test!

http://i160.photobucket.com/albums/t...m/DSC07266.jpg

My 1600kv 70mm runs really cool because I haven't got it yet. :cry:

Not even a ship notification. Harumph!

I'm amazed you're running a 60mm on an erevo. You must've found the sweet spot for sure. I would have thought that wouldn't have been enough motor for that setup.

It has the Medusa heat sink on it. Today I tried 15/50 on 4s, lowest timing. Perfect speed wise, got me what I was looking for, but only 17 minutes (need 20 if I want to race). Temps were good too, 145 and 50 degrees outside. One other thing I'm wondering if 10/50 on 5s would be undergeared. Where I'm trying to get is when I ran my SC8 with a 1515/1/Y/F it was geared 13/54, I think.

I no longer have my SC8 and am not positive of the spur gear tooth count. The manual online shows it to be a 54 tooth spur. Since the SC8 and the D8 share the same diff gearing (43/10) and the same size tires the 2000kv geared the same on 5s would be perfect. The SC8 was crazy fast, ran 27 minutes on a Polyquest 5s 6000mah 25c and the motor maybe got to 120 degrees.

My 36-60-1600 on 5S in my 8T stays around 100 degrees and I get 22 mins of run time on a 4000MAH pack.

I am a firm believer about the low KV and high volts.

I run 15/45 Gearing.

I also ran a 36-60-1500kv with a heat sink/fan setup. It was geared 18/40 Mod 1.

Alot of fun on 4S, 5S was crazy fast and 6S was pretty insane. :yes:

Ascheck was doing 55.7mph with the 36-60-2000kv on 6S in an E Revo. Ummm..Medusa heat sink and similiar gearing.

Aren't the Medusas supposed to be set at middle timing since they are 2 pole motors? I forgot what Jeff(Medusa manager) told me last year when I had a 60mm but I think he said to run it with middle timing with the MMM. Anyon who can confirm this?

arnt medusa 4pole??

Quoted from the Medusa motor manual. Yes they are 4 pole motors.

Here's the link for the manual. It's on page 6.

http://www.medusaproducts.com/pdf/Me...0(Rev%203).pdf

hey are the 70mm medusa in stock yet?