got miss g today started and finsished build

[Shaun78]

i wanna see your boat on 6S too

[Shaun78]

if u cant run 6S then you will never catch me when/if I upgrade

[ron1950]

i know guys that run this motor in a mono with a 180 a esc and 4 cell and a m445 and they hull butt

[bbosncali]

I need to prop down to run 6s though so its not gonna be this week... need to find out about how big of a prop I can run on 5s. Besides your boat is gonna do barrel rolls if you put too big of a motor kinda like it wanted to today

[bbosncali]

i know guys that run this motor in a mono with a 180 a esc and 4 cell and a m445 and they hull butt

She was moving pretty good today with a x642

[Shaun78]

I didnt see the Leopard 4082 on that site

[bbosncali]

Does anyone know if a x642 is too big of a prop to run 5s on? Next question is why do you have to prop down with more voltage? If it can swing the prop now wouldn't more power be able to swing a bigger prop? That's where I get confused

[JackBlack26]

You have to prop down because more RPM+large load caused by big prop= Imagine trying to climb a hill on a 12 speed bike with the tallest gear. Not gonna happen!

[lectriglide]

Does anyone know if a x642 is too big of a prop to run 5s on? Next question is why do you have to prop down with more voltage? If it can swing the prop now wouldn't more power be able to swing a bigger prop? That's where I get confused

Typically, bigger prop = more load = more amps = more heat. So, you prop down and check the temps to make sure you don't harm the motor or blow the esc.

The Prather 220 is 43.7mm vs 42mm for the x642, and the pitch is essentially the same 2.6 vs 2.64.

5S on that motor will produce 40+K rpm, which is SAW range. Can it be done, yes but again watch temps and amp draw since you are beyond the "normal" suggested range of operation. In other words it shouldn't be a surprise if you blow something.

[bbosncali]

Makes sense... but how do you what's too big of a prop? You suggested a 38mm to 40mm with 6s so what would work with 5s and again how do you determine that other than trial and error?

[Brushless55]

Makes sense... but how do you what's too big of a prop? You suggested a 38mm to 40mm with 6s so what would work with 5s and again how do you determine that other than trial and error?

was your run with the X642 on 4s?

[bbosncali]

If kv is mutiplied by vlts and the manufacture rates there motor to handle 23 vlts which would be equal to 50600 rpms then I should be well under peak load at 18.5 x 2200kv = 40700. Wires are 10 gage from the esc not sure about the motor 5.5mm connectors ec5 on the batter with 8mm wires from battery. If its gonna go atleast I prepped it right..... I think

[pyroM!KE]

I run a m445 and a cf45 on 5s with out any probs..Of course Im using a SK180 esc..Temps are in the 105-110 range..Ohh this is with the stock motor too..

[Brushless55]

If kv is mutiplied by vlts and the manufacture rates there motor to handle 23 vlts which would be equal to 50600 rpms then I should be well under peak load at 18.5 x 2200kv = 40700. Wires are 10 gage from the esc not sure about the motor 5.5mm connectors ec5 on the batter with 8mm wires from battery. If its gonna go atleast I prepped it right..... I think

I'm sure this motor can take 60,000rpms
but if its over propped, things will smoke
the wires will be plenty big enough and good connectors to

[bbosncali]

With stock motor that's only 1500kv its a lot less rpms that's only 27750 rpms as aposed to 40700 which is where it goes into that gray area so I'm learning. And 22.2 is at 48000+ is really pushing it from what I'm understanding

I run a m445 and a cf45 on 5s with out any probs..Of course Im using a SK180 esc..Temps are in the 105-110 range..Ohh this is with the stock motor too..