370 b motor for plane

[mh3400]

I need advise from you on :
370 b motor n 25A ESC

what does 370 b motor mean ?
which bl motor can replace this 370 motor to use on plane ?

[leonlio]

370

370 b...
370 - motor size
b - "B" gear ratio

370B is rough equivalent to a GWS EPS350 "B" geared brushed motor.

A good brushless drop-in would be a Himax 2015-5400 geared with a 5.33:1 or an AXI 2208/26.

But if you want a better estimate/recommendation it will be best that you put down the plane type and the estimate all-up-weight (AUW) of the plane as well. I'm sure the bros here will be more than willing to share their thoughts.


Cheers,
Leon

[mh3400]

Whirlwind 3D Electric Plane (2 sets of plane)

370 b...
370 - motor size
b - "B" gear ratio

370B is rough equivalent to a GWS EPS350 "B" geared brushed motor.

A good brushless drop-in would be a Himax 2015-5400 geared with a 5.33:1 or an AXI 2208/26.

But if you want a better estimate/recommendation it will be best that you put down the plane type and the estimate all-up-weight (AUW) of the plane as well. I'm sure the bros here will be more than willing to share their thoughts.


Cheers,
Leon

Thanks Bro Leon,
Actually I was surfing Rotor web, saw this Whirlwind 3D electric plane very good price.
it state 370 motor ( i don where i got this b from? sorry) so wondering any bl motor is almost same spec as 370 motor.
May be can I say the rpm for this type of plane should be around 1000kv to 1500Kv with ESC 25a ?

MingHauh

[leonlio]

3d

Usually for 3D plane, you would want:
1. power to weight ratio of about 150W per lb.
2. don't require a high speed setup but you will be looking more at the static thrust coz 3D planes hovers/sudden acceleration.

i.e. high torque motor setup of about 1000kV swinging a large enough prop at low pitch to provide the thrust. You would want to consider seting up as light as possible to achieve the high power to weight ratio.

As listed on the vendor's website vs. my estimate setup:

Reach Whirlwind 3D Electric Plane
370 motor with RPM reducer x1 -> AXI 2208/36 (saving of 20g)
1047 propeller x1
25A Electric Speed Control x1 -> Phoenix10 or similiar 10A brushless ESC (saving 10g)
5g micro servo x3
7.4V 1200mAh Li-Po Battery x1 -> 7.4V 1050mAh 15C (saving of 20g)

my setup is about 250g (0.55lb). the AXI is able to pump out 80W power easily. That's 145W per lb... The plane is 3D capable (not strong though), gentle floater in landing, ... I won't fly it in strong wind though.

I generally fly acrobat or warbird, no 3D yet... but thats just my estimate.


Cheers,
Leon

[mh3400]

Usually for 3D plane, you would want:
1. power to weight ratio of about 150W per lb.
2. don't require a high speed setup but you will be looking more at the static thrust coz 3D planes hovers/sudden acceleration.

i.e. high torque motor setup of about 1000kV swinging a large enough prop at low pitch to provide the thrust. You would want to consider seting up as light as possible to achieve the high power to weight ratio.

As listed on the vendor's website vs. my estimate setup:

Reach Whirlwind 3D Electric Plane
370 motor with RPM reducer x1 -> AXI 2208/36 (saving of 20g)
1047 propeller x1
25A Electric Speed Control x1 -> Phoenix10 or similiar 10A brushless ESC (saving 10g)
5g micro servo x3
7.4V 1200mAh Li-Po Battery x1 -> 7.4V 1050mAh 15C (saving of 20g)

my setup is about 250g (0.55lb). the AXI is able to pump out 80W power easily. That's 145W per lb... The plane is 3D capable (not strong though), gentle floater in landing, ... I won't fly it in strong wind though.

I generally fly acrobat or warbird, no 3D yet... but thats just my estimate.


Cheers,
Leon

Thanks Leon,

I might think of Skyhobbies SU31 3D foam, looks like is in crashable
I will use ur suggestion on it.

Thanks ,
MingHauh