running lower rpm? - Page 2 - RC-Monster Forums

lincpimp · 03.04.2008, 06:14 PM

And the hacker c50 motors are fine at 45k max rpm, maybe more.

I would say that the 16t pinion in the lsp would be a good place to start. I always gear for mid 30s for first tests and then gear up until I am happy with performance.

The 10l was running at a good rpm, according to the temps. You most likely had too much load on the mega, that was causing the heat issue with the esc, and most likely a big voltage drop. Better batteries may help, but the low motor rpm and steep gearing will produce more heat in any case.

tashpop · 08:06 PM

both setups ran hot for me, but the mega ran hotter. i was using 6s1p a123's, but i also just went back to my slower 4s1p and things seem happy, except me. not enough power to lift the front up and over and speed is lacking. i know this setup would have the punch to wheely and flip with a 4s2p,(i was thinking about running that anyway) but it will still be slow. i'm pretty sure i'll just order a motor. question is which one? i'm thinking xl for the torque, but keeping a decently high rpm on 4s which the mamba seems happy with means looking at the 6xl, or 7xl. which would be the better choice do you guys think. basicly if compairing either motor to top over 40mph on same voltage, which do you think would run better on a mm esc?

ooooorrrrrr, do you think i 10L will do it, and just gear up?

push comes to shove and i decide to bench the emaxx or sell it i have a mgm16018.

lutach · 03.04.2008, 08:36 PM

Quote:

Originally Posted by tashpop

both setups ran hot for me, but the mega ran hotter. i was using 6s1p a123's, but i also just went back to my slower 4s1p and things seem happy, except me. not enough power to lift the front up and over and speed is lacking. i know this setup would have the punch to wheely and flip with a 4s2p,(i was thinking about running that anyway) but it will still be slow. i'm pretty sure i'll just order a motor. question is which one? i'm thinking xl for the torque, but keeping a decently high rpm on 4s which the mamba seems happy with means looking at the 6xl, or 7xl. which would be the better choice do you guys think. basicly if compairing either motor to top over 40mph on same voltage, which do you think would run better on a mm esc?

ooooorrrrrr, do you think i 10L will do it, and just gear up?

push comes to shove and i decide to bench the emaxx or sell it i have a mgm16018.

I'll be more then happy to try out your Mega in my MBX5T

. Edit: I'll pay shipping both ways.

lincpimp · 03.05.2008, 01:07 AM

Quote:

Originally Posted by tashpop

both setups ran hot for me, but the mega ran hotter. i was using 6s1p a123's, but i also just went back to my slower 4s1p and things seem happy, except me. not enough power to lift the front up and over and speed is lacking. i know this setup would have the punch to wheely and flip with a 4s2p,(i was thinking about running that anyway) but it will still be slow. i'm pretty sure i'll just order a motor. question is which one? i'm thinking xl for the torque, but keeping a decently high rpm on 4s which the mamba seems happy with means looking at the 6xl, or 7xl. which would be the better choice do you guys think. basicly if compairing either motor to top over 40mph on same voltage, which do you think would run better on a mm esc?

ooooorrrrrr, do you think i 10L will do it, and just gear up?

push comes to shove and i decide to bench the emaxx or sell it i have a mgm16018.

Ok, question time. You want to run 4s1p a123? Or lipo? 4s2p would be best with the 7xl, the 6xl might be too much? Not too sure. I can say that a 7xl works well on 4s lipo. Properly geared the 6xl should work on 4s a123, you would need a 2p configuration. It may drawn too many amps and need a 3p? 5s a123 would be optimum for the 7xl.

Not sure if the 10l will pull that truck?! If you gear for 35mph it may stay cool enough?!

tashpop · 03.05.2008, 07:33 PM

i wouldn't mind using 4s2p lipo, especially after looking at hobbycities zippy packes. for now i am working with a123's. also the 10L will be going back into the LS10.
any experience with hacker c50's? i'm kind of looking at one right now. its only 1700kv, but still i'm looking at it.

tashpop · 03.05.2008, 07:34 PM

Quote:

Originally Posted by lutach

I'll be more then happy to try out your Mega in my MBX5T

. Edit: I'll pay shipping both ways.

yeah, i don't think i can do that right now. its going back in my yusa when my new spur gears arrive.

lincpimp · 03.05.2008, 07:44 PM

Quote:

Originally Posted by tashpop

i wouldn't mind using 4s2p lipo, especially after looking at hobbycities zippy packes. for now i am working with a123's. also the 10L will be going back into the LS10.
any experience with hacker c50's? i'm kind of looking at one right now. its only 1700kv, but still i'm looking at it.

I have a little experience with the c50 motors.

tashpop · 03.05.2008, 08:13 PM

well, how are they? compairible to nue petty lmt ect?

lutach · 03.05.2008, 08:26 PM

Quote:

Originally Posted by tashpop

well, how are they? compairible to nue petty lmt ect?

The C50s are nice. I would compare them to a LMT since they are both 2 pole motors. All the motors mentioned here are top notch. Mega should also be in that list.

04.05.2008, 07:18 AM

I've seen a few shreaded C50 rotors on Heli forums. I believe 40-45k RPM is about the limit for reliable running.

lincpimp · 04.05.2008, 09:46 AM

Quote:

Originally Posted by Buzzsaw46

I've seen a few shreaded C50 rotors on Heli forums. I believe 40-45k RPM is about the limit for reliable running.

Sounds about right. The c50 rotor looks just like a lmt rotor, so it should perform in a similar manner.