4s 2208 on 6045 prop in Alpha?

[Mr Man]

Oh btw, the Arrow RIPS!!! By far the fastest plane I've ever flown, and that's saying something, because I flew My Spitfire with a 3536 on it and hit 89mph, (gonna go for a 3548) But the Arrow is Still FASTER!! But all of the electronics just BARELY fit.

 

[Houndpup Rc]

Hey wait a minute, I've got the 2750kv version in my arrow running a 6045 prop on 4s with no issues! (gonna try 5x5 for more speed)

I still gotta try that death prop that you used on your mini mustang! lol
Got another goblin built!

 

[Houndpup Rc]

Oh btw, the Arrow RIPS!!! By far the fastest plane I've ever flown, and that's saying something, because I flew My Spitfire with a 3536 on it and hit 89mph, (gonna go for a 3548) But the Arrow is Still FASTER!! But all of the electronics just BARELY fit.

I think I am going to get a speed tracker come April! (I was holding off spending anything until April.)

 

[Houndpup Rc]

thank you again. trying to get going here has honestly been a disaster. i have bo one to ask questions to 😑

am i allowed to lost links here? it was the only 2208 i could find on amazon, was actually a 2207.5.

i havent pulled the motor yet, will let you know how it looks when i do. i plugged another motor in the esc and it worked 👌🏻

so 5x45 prop?

i have 5x4x3 but they dont seem very strong, pretty flimsy.

Yeah you can post links here!

 

[Houndpup Rc]

i just purchased the 2750 kv version 🤔

which plane you flying? my mind is thinking of like Arrows Viper which is jet…so, I am not tracking.

so a 5x45 will give more top end? they look so small though…

i also have 5x3x3

🙏

Smaller props with a higher pitch get more top speed but less power the larger prop diameter has more drag but more overall power.

 

[Houndpup Rc]

yeah, mainly motor and batteries.

i am wondering if I got a bunk motor or if the 6045 smoked the motor? i legit fid not expect it to fry.

how much 100% throttle do you do?

https://www.amazon.com/gp/aw/d/B09L65TTTF?psc=1&ref=ppx_pop_mob_b_asin_title

think its just a piece of space poopy?

I fly a LOT of 100% throttle!

 

[Captain J]

I'm a bit busy designing my wildcat now, How soon do you want them?

no rush, just trying to visually compare.

from reading you use the same on 4s, i dont believe the motor should have failed.

how often are you WOT (wide open throttle)? i will admit i run WOT a lot, but was doing burst across a 2000ft section, dropping throttle, turning, bursting. Again, made it about 3 mins.

 

[Mr Man]

no rush, just trying to visually compare.

from reading you use the same on 4s, i dont believe the motor should have failed.

how often are you WOT (wide open throttle)? i will admit i run WOT a lot, but was doing burst across a 2000ft section, dropping throttle, turning, bursting. Again, made it about 3 mins.

That’s sorta what I do, because I can’t hold WOT for too long before I cant see it!😂

 

[Mr Man]

If you’ll notice, the esc‘s heat sink is flush with the bottom of the plane, this is purely to keep my esc from catching on fire if I ever put 50 amps through it (the air should keep the esc cool enough so it can handle the extra load) and I recommend doing the same. Also, you can probably tell that this is one of my oldest motors, it’s been through a lot, but it’s still holding up strong!

 

[Merv]

...what did i do wrong?...

I always test an new setup as follows.
Run the motor at full speed for 10 seconds or so. Then stop, take the temperature of everything, the motor, ESC & battery, by touching them. Warm is OK but if anything is so hot you don't want to hold it, then STOP. That's too hot, try a smaller prop. If it passes, try a 30 second run and take the temperatures. If it passes, try a 60 second run and take the temperatures. If it passes, go for a fly.

It's always a good practice to take the temperatures after a fly. Keep in mind that a setup that worked when it is mild, 70'sF, may overheat when it is hot outside 95F+.

 

[Houndpup Rc]

Chances are that the motor could have been pre used if you got it on Amazon.......

 

[Houndpup Rc]

I always test an new setup as follows.
Run the motor at full speed for 10 seconds or so. Then stop, take the temperature of everything, the motor, ESC & battery, by touching them. Warm is OK but if anything is so hot you don't want to hold it, then STOP. That's too hot, try a smaller prop. If it passes, try a 30 second run and take the temperatures. If it passes, try a 60 second run and take the temperatures. If it passes, go for a fly.

It's always a good practice to take the temperatures after a fly. Keep in mind that a setup that worked when it is mild, 70'sF, may overheat when it is hot outside 95F+.

Yeah when I was do all my WOT it was like 15 out, so no chance of it over heating.

 

[Mr Man]

Yeah when I was do all my WOT it was like 15 out, so no chance of it over heating.

Same here. Lots of airflow is good too.

 

[Merv]

Yeah when I was do all my WOT it was like 15 out, so no chance of it over heating

I must disagree. You can burnout a motor by over proping it. Even when it's cold outside.

 

[Piotrsko]

Yup, the 5x4.5 will definitely give higher top speed.

Only if it spins faster or is more efficient.
External temperature on the motor is only an indication of heat dissipation. Doesn't say what the wires are doing inside. Typical wire varnish gets funny above 180 C (356f) don't know about chineseium varnish, too hot to the touch is around 100C (212f) most people

 

[Houndpup Rc]

I must disagree. You can burnout a motor by over proping it. Even when it's cold outside.

I meant running higher throttle than usual.

 

[Captain J]

If you’ll notice, the esc‘s heat sink is flush with the bottom of the plane, this is purely to keep my esc from catching on fire if I ever put 50 amps through it (the air should keep the esc cool enough so it can handle the extra load) and I recommend doing the same. Also, you can probably tell that this is one of my oldest motors, it’s been through a lot, but it’s still holding up strong!

wild. 4s, 2807.5, 6045 prop?

how much WOT you doing?

 

[Houndpup Rc]

wild. 4s, 2807.5, 6045 prop?

how much WOT you doing?

I use that setup on my 2306 and it really makes my planes go!

 

[Captain J]

I use that setup on my 2306 and it really makes my planes go!

i am running 60 amp esc 4s 2200mah 120c 2808 2750k w/ 5x4x3 prop, and its not what I am looking for. Not fast enough and not even close to enough torque.

i am so open to suggestions as i am learning gear now and not sure what motor(s) to try next

 

[Houndpup Rc]

In this video I was using my 2306 Emax ECO II with a 50A esc and a 850mah 4S 65V on the Mini FT Mustang paired with a 5x4.3x3 prop.