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DC Brushless motors for RC applications

28mm Motors

28mm

(Lead Rear Exit)	Kv	Io@8V	Rm	P In*	I	Max I**	Max V	Dimensions (Dia. X Length)	Shaft Dia	Weight
MR-028-056-2800V2	2800RPM/V	2.50A	0.007 Ω	500W	57A	69A	21V	28 x 56mm	3.17mm	160g
MR-028-056-1900V2	1900RPM/V	1.30A	0.016 Ω	500W	44A	52A	32V	28 x 56mm	3.17mm	160g
MR-028-056-1400V2	1400RPM/V	0.90A	0.025 Ω	500W	36A	43A	43V	28 x 56mm	3.17mm	160g
MR-028-056-0900V2	900RPM/V	0.45A	0.053 Ω	500W	26A	31A	65V	28 x 56mm	3.17mm	160g

Model(Lead Rear Exit)	Kv	Io@8V	Rm	P In*	I	Max I**	Max V	Dimensions (Dia. X Length)	Shaft Dia	Weight
MR-028-040-3400V2	3400RPM/V	2.00A	0.010 Ω	350W	42A	50A	18V	28 x 40mm	3.17mm	100g
MR-028-040-2500V2	2500RPM/V	1.20A	0.016 Ω	350W	37A	45A	24V	28 x 40mm	3.17mm	100g
MR-028-040-2200V2	2200RPM/V	1.00A	0.021 Ω	350W	33A	40A	27V	28 x 40mm	3.17mm	100g
MR-028-040-1700V2	1700RPM/V	0.65A	0.036 Ω	350W	27A	32A	35V	28 x 40mm	3.17mm	100g
MR-028-040-1200V2	1200RPM/V	0.50A	0.066 Ω	350W	20A	24A	50V	28 x 40mm	3.17mm	100g
MR-028-040-1000V2	1000RPM/V	0.30A	0.101 Ω	350W	17A	20A	60V	28 x 40mm	3.17mm	100g

Model(Lead Rear Exit)	Kv	Io@8V	Rm	P In*	I	Max I**	Max V	Dimensions(Dia. X Length)	Shaft Dia	Weight
MR-028-032-4200V2	4200RPM/V	1.80A	0.013 Ω	275W	33A	40A	14V	28 x 32mm	3.17mm	70g
MR-028-032-3400V2	3400RPM/V	1.30A	0.020 Ω	275W	29A	35A	18V	28 x 32mm	3.17mm	70g
MR-028-032-2800V2	2800RPM/V	1.00A	0.027 Ω	275W	27A	32A	21V	28 x 32mm	3.17mm	70g
MR-028-032-2400V2	2400RPM/V	0.75A	0.036 Ω	275W	24A	29A	25V	28 x 32mm	3.17mm	70g
MR-028-032-1900V2	1900RPM/V	0.50A	0.058 Ω	275W	20A	23A	32V	28 x 32mm	3.17mm	70g
MR-028-032-1500V2	1500RPM/V	0.40A	0.082 Ω	275W	17A	20A	40V	28 x 32mm	3.17mm	70g

Model(Lead Side Exit)	Kv	Io@8V	Rm	P In*	I	Max I**	Max V	Dimensions (Dia. X Length)	Shaft Dia	Weight
MR-028-056-2800V2SE	2800RPM/V	2.50A	0.007 Ω	500W	57A	69A	21V	28 x 56mm	3.17mm	160g
MR-028-056-1900V2SE	1900RPM/V	1.30A	0.016 Ω	500W	44A	52A	32V	28 x 56mm	3.17mm	160g
MR-028-056-1400V2SE	1400RPM/V	0.90A	0.025 Ω	500W	36A	43A	43V	28 x 56mm	3.17mm	160g
MR-028-056-0900V2SE	900RPM/V	0.45A	0.053 Ω	500W	26A	31A	65V	28 x 56mm	3.17mm	160g

Model(Lead Side Exit)	Kv	Io@8V	Rm	P In*	I	Max I**	Max V	Dimensions(Dia. X Length)	Shaft Dia	Weight
MR-028-040-3400V2SE	3400RPM/V	2.00A	0.010 Ω	350W	42A	50A	18V	28 x 40mm	3.17mm	100g
MR-028-040-2500V2SE	2500RPM/V	1.20A	0.016 Ω	350W	37A	45A	24V	28 x 40mm	3.17mm	100g
MR-028-040-2200V2SE	2200RPM/V	1.00A	0.021 Ω	350W	33A	40A	27V	28 x 40mm	3.17mm	100g
MR-028-040-1700V2SE	1700RPM/V	0.65A	0.036 Ω	350W	27A	32A	35V	28 x 40mm	3.17mm	100g
MR-028-040-1200V2SE	1200RPM/V	0.50A	0.066 Ω	350W	20A	24A	50V	28 x 40mm	3.17mm	100g
MR-028-040-1000V2SE	1000RPM/V	0.30A	0.101 Ω	350W	17A	20A	60V	28 x 40mm	3.17mm	100g

Model(Lead Side Exit)	Kv	Io@8V	Rm	P In*	I	Max I**	Max V	Dimensions (Dia. X Length)	Shaft Dia	Weight
MR-028-032-4200V2SE	4200RPM/V	1.80A	0.013 Ω	275W	33A	40A	14V	28 x 32mm	3.17mm	70g
MR-028-032-3400V2SE	3400RPM/V	1.30A	0.020 Ω	275W	29A	35A	18V	28 x 32mm	3.17mm	70g
MR-028-032-2800V2SE	2800RPM/V	1.00A	0.027 Ω	275W	27A	32A	21V	28 x 32mm	3.17mm	70g
MR-028-032-2400V2SE	2400RPM/V	0.75A	0.036 Ω	275W	24A	29A	25V	28 x 32mm	3.17mm	70g
MR-028-032-1900V2SE	1900RPM/V	0.50A	0.058 Ω	275W	20A	23A	32V	28 x 32mm	3.17mm	70g
MR-028-032-1500V2SE	1500RPM/V	0.40A	0.082 Ω	275W	17A	20A	40V	28 x 32mm	3.17mm	70g
MR-028-032-1200V2SE	1200RPM/V	0.25A	0.137 Ω	275W	13A	16A	50V	28 x 32mm	3.17mm	70g

*Based on adequate air flow around motor, i.e., open air stream behind propeller
**Max I can be present for 30 seconds
All Afterburner motors are rated for 60,000 RPM operation and use ABEC 5 bearings
For the best efficiency, your ESC should be setup with 8º to 15º advance, and a switching rate of 10 to 20kHz.
The above motors have 4 poles.