Turnigy Aerodrive SK3 - 4240-740KV Brushless Outrunner Motor

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TURNIGY AERODRIVE SK3 - 4240-740KV BRUSHLESS OUTRUNNER MOTOR

Feb 05, 2021

did earlier review on this, did wrong motor. this was put on a pt17 with 44 in wing span. works well on 4s 5000 60c battery esc 80 amp swinging an 10x7 3 blade prop

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TURNIGY AERODRIVE SK3 - 4240-740KV BRUSHLESS OUTRUNNER MOTOR

Feb 05, 2021

this little baby rips my f22 foamy from flite test with an 8x8 prop. Quiet, smooth running motor on 80 amp esc on a 3s 2200 battery

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Kv Lower than 740

Dec 18, 2020

This motor was recommended to me by Hobby King technical support, as was the propeller for my Kingcraft Pitts Special S2-B. This was the first electric powered ARF I bought, so I depended on HK to recommend the right motor/prop. The motor was not a good match for the prop because the Kv was more like 695 instead of their published 740. Spinning the motor with my drill press at a known RPM and measuring RMS then converting to Peak to Peak revealed this. Also, my all-up weight for the Pitts ended up being 3120 grams. Pretty close to 7 lbs. I've since learned that for an aerobatic airplane, you want roughly a minimum of 100 Watts/lb. I was only measuring 620 - 650 Watts. The best performance was with a 14x7 prop. Even then, I could barely pull through a simple loop. Maybe a larger PropDrive motor would be a better selection. I paid only $38, but not a good value in my opinion. The Pitts Special is not a .46-size aircraft, but rather a .60-size. Choose your motor appropriately.

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good stuff

Oct 08, 2020

quick delivery for good motors

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perfect motors

Oct 07, 2020

perfecct motor for big ships. silent en stabel

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Turnigy motors

Oct 05, 2020

Excellent workmanship, nice packaging

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TURNIGY AERODRIVE SK3 SERIES MOTORS

Oct 01, 2020

All of the SK3 series motors that I have tried were excellent, with the exception of one motor that had a defective prop adaptor. I have purchased and flown at least 60 to 75 SK3 motors. I build about 20-25 planes a year. Many of my own design. All of my planes receive an SK3 motor. By far the best motor for the price anywhere.

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Good power & 6 minutes with 15x6 wood prop

Aug 20, 2020

Good power & 6 minutes with 15x6 wood prop

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Un moteur fiable et bien fini

Jun 14, 2020

Pas grand chose à dire, le moteur fait le job ! Par contre l'axe prévu pour recevoir l'hélice est trop cours, j'ai du renoncer à utiliser l'hélice Master Airscrew S-2 Fokker Series que j'avais prévu, car il était impossible de la monter une fois la contre plaque du cône d'hélice installé. Avec une hélice plus classique comme une APC, il n'y a pas de problème. Par sécurité, j'ai installé une vis en acier dans l'axe d'hélice, car le diamètre de l'axe étant petit, le taraudage de cet l'axe réduit encore l'épaisseur de la matière à ce niveau.

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Lo riordinerro appena rientrerà

Jun 01, 2020

Molto bene