got miss g today started and finsished build

[bbosncali]

Awsome.... thanks for the tips... I was going to use greatstuff but I've heard a lot of bad things about using. I used to build houses for a living so I'm extremely familiar with it and yes I gues if I just aply it in small amounts should be ok? How do you feel about making a ball of it so it expands and then cut the pieces to size that I need? We used to do that t fill holes we didn't want to blow out? Just curious if it would make a difference if I just stuck it in....

[JackBlack26]

Lary, find your thread, highlight the URL, press control and the letter C. In the reply box, press the "link" tab. Now press contro V and tht should paste the URL in to the box. That should be all you need to post your links.

[bbosncali]

Hey thanks for the tips guys I listened and applied and my boat ran great forgot to tape the hatch and almost zero water got in.... hatch nice and sturdy seemed well balanced with the battery suggestion the great stuff door and window foam was the ticket for me its non bowing... I wouldn't recomend the red can use the blue can it helps..... now if I can find the right prop for her. One that's already balanced cause that's a pain in the butt lol

[dana]

That's a good idea thanks guys... it can't be a harder to do than say bondo or drywall mud... I would assume... oh and jb I'm running 2 2s 5000mah 40c right now and just ordered 2 3s 5000mah 40c so I can try 5s and then the crazy 6s..... so yeah deffinetly gonna have to do some reinforcement... you guys have some fast boats how do you keep it from the nose coming up and flipping over that's my biggest concern right now

leopard 2200kv on 6s? you sure you want to do that..?

[bbosncali]

Why not?? ? Suposedly it can handle it? I gotta atleast try unless its an absolute no no

[JackBlack26]

It can handle it. Just run a 38m prop, 40mm tops.

[bbosncali]

Ok so don't try it with my 642 then? What's a good prop to run on 5s then. Not trying to break any speed records just want a little more oooommmmpppphhhh!!!!

[bbosncali]

Is a prather 220 to big to run on 5s with my setup?

[dana]

Why not?? ? Suposedly it can handle it? I gotta atleast try unless its an absolute no no

im curious to see your results. thats about 48,840 rpm... i dont think 6s is a good idea with that motor, but im no guru

[bbosncali]

Yeah that's what I came up with.... I'm pretty new to boats so I'm always open to suggestions

[dana]

i think youre gonna fry something, but go ahead and try if you like. just disable the bec

[bbosncali]

That esc has no bec. Do you think I would be ok with 5s?

[dana]

That esc has no bec. Do you think I would be ok with 5s?

you might get away with 5s, i cant say for sure. i was always told this is a 4s motor... you might search threads for the answers. i am running 4s on mine with a rather small prop x442 and i am trying to keep the hull in the water, let alone propping up. im nowhere near the speeds that can be acheived on 4s with this motor and the right prop so im gonna stick with props, and not more cells. jmo

[Brushless55]

you might get away with 5s, i cant say for sure. i was always told this is a 4s motor... you might search threads for the answers. i am running 4s on mine with a rather small prop x442 and i am trying to keep the hull in the water, let alone propping up. im nowhere near the speeds that can be acheived on 4s with this motor and the right prop so im gonna stick with props, and not more cells. jmo

4s motor depends on application
this small of hull could work but dang the rpms! the right prop is needed

[bbosncali]

The esc can handle 210,000 rpms 2 pole 70,000 rpms 6 pole so that's good the 4074 2200 can handle 23vlts according to leopard

http://www.leopardhobby.com/product/...ionID=01020207

[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..