<u><span style="font-size: medium">50-SIZE MOTORS</span></u> (49mm, 50mm diameter)
(listed in order of weight, ascending Kv, and number of turns -descending), (LP =LiPolice)
(For Turnigy SK3 motors: Stated "Can length" is 3 to 5mm longer than stator length, and can be used to identify stator length of each motor;
All Turnigy SK3 "50"-series motors have diam of 50mm.
SK3 "5045" -size motor has 4020 stator; "5055" motor has 4030 stator; "5065" motor has ~4040 stator (-SK3 5065 motor has large front bearing / fan assembly behind front housing -stator appears to start ~15mm behind front of can )
(Turnigy SK3 50-size motors: Quoted length includes ~4mm collet at back of motor; Actual length of main motor body is ~4mm shorter )

<span style="font-size: medium">234g
</span>O.S. OMA-5010 Kv 810, 234g, , D50 L43, 14 pole, number turns unknown (-has 4010 stator)


<span style="font-size: medium">289g
</span>(these motors have 4020 stator)
APACHE APS41-20T 390 Kv</p>

Turnigy SK3 5045-450kv; 280g; 18T, D 50 L 49,14 pole, 12 stator arms =BMI SPITZ 60, (325g), Kv 460, D50 (the "Spitz 60" appears more similar to this Turnigy, than to Hacker A50-14 S motor)</p>

Turnigy SK3 5045-500kv; 280g; 16T=HYPERION Z4020 16T 504 KV, D50 L51 = ? O.S.-OMA-5020 Kv 490, 350g, D50 L53, 14 pole -has 4020 stator)


Hacker 289g, A50-14 XS V2, Kv 564, 14T, 14pole, D49 L47=Sunray 4020-550Kv 14T, D50 L42=Torque 4014T/570 Kv 570, D50 L47=LP-4020 /14T-550KV=HYPERION Z4020 14T 574 KV=Infinite A4020-540, 14T=Foxy C4020/14 550 Kv=APACHE APS41-14T 570 Kv =Lipotech GTA4510 -14 575 Kv, 14T=Gens ACE Mars BL4841-550KV, 14T=BOOST 50 295g, Kv 600, D50 L45</p>

Turnigy SK3 5045-660kv; 280g; 12T, D50 L49=HYPERION Z4020 12T 660 KV, D49 L43</p>

Sunray 4020-755Kv 10T=LP-4020 /10T-755KV=Infinite A4020-770, 10T=HYPERION Z4020 10T 748 KV=Foxy C4020/10 755 Kv=LipoTech GTA4510-10, 750 Kv, 10T</p>

HYPERION Z4020 8T 915KV</p>

</p>

<span style="font-size: medium">345g
</span>(these motors have 4025 stator)

SunRay 4025-325Kv 18T, 335g, D 50 L 47=LP-4025 /18T-325KV=Infinite A4025-320, 18T=Foxy C4025/18 325 Kv</p>

Hacker 345g, A50-16 S V2, Kv 378, 16T, 14pole, D49 L52=SunRay 4025-385Kv 16T, D50 L47=LP-4025 /16T-385KV=Infinite A4025-370, 16T=HYPERION Z4025 16T 368 KV, D50 L51=Foxy C4025/16 385 Kv=Pilotage Nova Line DT4123/16 Kv378=APACHE APL41-16T 320 Kv=LipoTech GTA4520 -16 370 Kv, 16T= ? O.S. OMA-5025 Kv 375, (405g), D 50 L 58, 14 pole(-has 4025 stator)</p>

Hacker 345g, A50-14 S V2, Kv 424, 14T, 14pole, D49 L52=APACHE APL41-14T 380 Kv=Pilotage Nova Line DT4123/14 Kv 425=BMI SPITZ 60, 325g, Kv 460, D49</p>

Hacker 345g, A50-12 S V2, Kv 492, 12T, 14pole, D49 L52=SunRay 4025-510Kv 12T=LP-4025 /12T-510KV=Infinite A4025-505, 12T=HYPERION Z4025 12T 486 KV=APACHE APL41-12T 420 Kv=Pilotage Nova Line DT4123/12 -473Kv=BOOST 60 345g, Kv 490, D50 L50</p>

Pilotage Nova Line DT4123/10 -590Kv=HYPERION Z4025 10T 570 KV=APACHE APL41-10T Kv550=Lipotech GTA4520 -10 570 Kv, 10T= BMI SPITZ 46, 325g, Kv 580, D49


<span style="font-size: medium">369g
</span>(these motors have 4030 stator)

Turnigy SK3 5055-280kv, 18T, 369g, D 50, L 59(-Can length is 34mm, stator is ~4mm shorter -showing 4030 stator)</p>

Turnigy SK3 5055-320kv, 16T=Gens ACE Mars BL4850-340KV, 16T, 370g (-Gens Ace specs quote 4030 stator)</p>

<span style="font-size: small">Futaba FMA-5055,330g,KV410</span>, D50 L55 (number turns prob. 12T ?) =~Turnigy SK3 5055-430kv, (370g), 12T, D50 L59

<span style="font-size: small">Futaba FMA-5055, 330g, KV525</span></p>


<span style="font-size: medium">430g
</span>(these motors have 4035 stator)</p>

Hacker 430g, A50-16 L V2, Kv 272, 16T, 14pole, D49 L62=Apache APM 5035-16T 270 Kv, (485g)=BMI SPITZ 90, 410g, Kv 270, D49</p>

Hacker 430g, A50-14 L V2, Kv 300, 14T, 14pole, D49 L62=SunRay 4035-310Kv 14T, 445g, D50 L56= LP-4035 /14T-310KV=Infinite A4035-300, 14T=HYPERION Z4035 14T 299 KV=Foxy C4035/14 310 Kv = Apache APM 5035-14T Kv 320=Pilotage Nova Line DT4133/14-354=Lipotech GTA4530 -14 300 Kv, 14T=?BOOST 90 455g, Kv 300, D50 L60 =<span style="font-size: small">Futaba FMA-5065, 441g, KV300</span>, D50 L64 (number turns unknown -prob. 14T)


Hacker 430g, A50-12 L V2, Kv 345, 12T, 14pole, D49 L62=SunRay 4035-375Kv 12T=LP-4035 /12T-375KV =Infinite A4035-360, 12T=HYPERION Z4035 12T 343 KV=Foxy C4035/12 375 Kv=BMI SPITZ 80, 410g, Kv 340=BOOST 80 (395g), Kv 340, D50 L55</p>

HYPERION Z4035 10T 405 KV =APACHE APM5035-10T 440 Kv=Pilotage Nova Line DT4133/10-443=Lipotech GTA4530 -10 410 Kv, 10T
</p>

<span style="font-size: medium">530g
</span>(SK3 5065 motor hascan length 57mm; due to front bearing / fan assembly, stator starts ~15mm behind front of can -indicating 4040 stator)

Turnigy SK3 5065-236kv;530g; 10T,D50 L82

Turnigy SK3 5065-275kv;530g; 8T</p>

<span style="font-size: small">Futaba FMA-5065, KV300</span>, (no. turns unknown)</p>

Turnigy SK3 5065-320kv;530g; 6T;</p>

<span style="font-size: medium">550g
</span>(these motors have 4045 stator)

HYPERION Z4045 14T 236 KV, 553g, D48 L70 =Lipotech GTA4540 -14, 550g, 240Kv, 14T, D48 L76= ~Turnigy SK3 5065-236kv</p>

HYPERION Z4045 12T 275 KV= ~ Turnigy SK3 5065-275kv;</p>

HYPERION Z4045 10T 320 KV=Lipotech GTA4540 -10, 550g, 320 Kv, 10T= ~ Turnigy SK3 5065-320kv
</p>