Notices
Brushed/Brushless motors, speed controls, gear drives Discuss all aspects of brushless motors, brushed motors, speed controls (ESC's), gear drives and propellers in this forum.

emax bc2810-12 motor

Old 10-15-2021, 03:40 PM
  #1  
tewitt1949
Thread Starter
 
Join Date: May 2007
Location: sparta, MI
Posts: 466
Likes: 0
Received 0 Likes on 0 Posts
Default emax bc2810-12 motor

Hi all.....Its been a while since I've been here but I have a question that I have to rely on experts and someone that knows more than I do about motors.
I have had a plane that had a emax bc2810-12 motor and I loved it. Flew so good with authority. Anyways it went down in Lake Superior and I was not able to retrieve it.
So I've been trying to replace it but the emax bc2810-12 is no longer available. I am not smart enough or know enough to figure out what motor is equivalent now days.
Here are the spec's for the motor.

https://www.aliexpress.com/item/3235...yAAEgK4QvD_BwE Model: BL2810/12
- No. Of cells: 3X Li-Poly
- RPM/V: 1100
- Max. efficiency: 82%
- Max. efficiency current: >75%
- No load current / 10V: 0.5 A
- Current capacity 38 A/60s
- Dimensions: 30x10 mm
- Shaft diameter: 5 mm
- Weight: 86 g/3.03 oz
- Recommended model weight: 600-1400g
- Recommended prop without gearbox: 11*7; 10*5.5

BL2810 KV=1100 Sample data sheet
Model Voltage Propeller RPM Max Current Max Thrust
BL2810 12.0V 11X5.5 (Thin) 8500 32A 1150g
BL2810 12.0V 11X7 (Thin) 8050 38A 1260g

I sure would be grateful if someone could find a link to an equivalent motor. Thanks in advance.
Old 10-18-2021, 04:28 AM
  #2  
ron_van_sommeren
 
ron_van_sommeren's Avatar
 
Join Date: Sep 2002
Location: Nijmegen / Nederland
Posts: 591
Likes: 0
Received 15 Likes on 12 Posts
Default

Motormass is a rough indicator for max. continuous motor power:
4watt per gram, a safe starting point.
So go for a motor with same or higher mass and about the same Kv.

Kv should not differ too much though, both current and power drawn are proportional to Kv³ Name:  eek.gif
Views: 35
Size:  1.0 KBName:  eek.gif
Views: 35
Size:  1.0 KBName:  eek.gif
Views: 35
Size:  1.0 KB
Silly example: doubling Kv will result in 2³=eight -folding current and power drawn.
Realistic example: an increase by 10% will result in an increase by factor (1.1)³=1.3.

Always measure/check current and power drawn in a new or changed power system.


Vriendelijke groeten Ron
• Without a watt-meter you're in the dark ... until something starts to glow •
E-flight calculatorswatt-metersdiy motor tips&tricksCumulus MFC

Last edited by ron_van_sommeren; 10-18-2021 at 04:33 AM.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2022 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.