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Gemfan Hélice 5x4.5 Noir (CW / CCW) (2pcs)

Gemfan Hélice 5x4.5 Noir (CW / CCW) (2pcs)

Discontinued Product

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SKU:
329000343-0
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GemFan Hélices ont établi la norme d'or dans la communauté Multirotor petite classe. Connu pour leur durabilité, leur grand équilibre et une superbe plaque tournante de centrage et de prix durables. Ils sont emballés comme un ensemble de 2, avec une rotation CW et une rotation anti-horaire. Il y a un large éventail d'options de couleurs qui peuvent être mélangés et combinés pour aider à l'orientation de multirotor. Ceci est la mise à niveau idéale pour toute petite multirotor.

Spécifications:
Taille: 5045 (5x4.5)
Couleur: Noir
Hub: 5mm (adaptateurs inclus pour 4mm, 3,17 mm et 3 mm)
Matériel: Carbon renforcé Nylon

Compris:
rotation 1 x CW
1 x CCW rotation
Adaptateurs

  • UGS 329000343-0
  • Brand Gemfan
  • Poids 14.0000
  • Longueur 190.00
  • Packaging Width 10.00
  • la taille 60.00
  • Propeller Diamètre X ( pouces ) 5.00
  • Emplacement Y ( pouces ) 4.50
  • Rotation CW/CCW
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cheap but great performance

verified_user Quality:
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cheap but great performance

These props are very stiff and well shaped.
[WARNING] However, the structural integrity of these props are nearly impossible to verify after a crash. I was tuning PIDs for a 250 quad (using 2150kV MS Elite 'Mini Monster' motors and a 4S battery) and had a few rough landings. After the first prop broke, I carefully checked each prop after each flight, as they were snapping at the root.
I finally had the PID's tuned in to prevent oscillation at ~50pcnt throttle, so I tried gunning the throttle to see how it handled at ~80pcnt throttle.

In a split-second, 7 out of the 8 total blades on my quadcopter exploded / ripped apart mid-air and the quad fell to the ground. Some blades flew more than 10 meters, one blade had flown inwards and ripped ~4cm of heatshrink off the side of my video TX and one propeller was found in at least 3 pieces, split down the length of the blade into slivers.

While I cannot recommend these props for a quad using the same high-power motors and 4S battery setup, I do believe these props operate fine with a more moderate / 3S setup.

Here is a link to a video of the incident: https://www.youtube.com/watch?v=8Ut29iIa2xw

verified_user Quality:
trending_up Value:
playlist_add_check Overall:

These props are very stiff and well shaped.
[WARNING] However, the structural integrity of these props are nearly impossible to verify after a crash. I was tuning PIDs for a 250 quad (using 2150kV MS Elite 'Mini Monster' motors and a 4S battery) and had a few rough landings. After the first prop broke, I carefully checked each prop after each flight, as they were snapping at the root.
I finally had the PID's tuned in to prevent oscillation at ~50pcnt throttle, so I tried gunning the throttle to see how it handled at ~80pcnt throttle.

In a split-second, 7 out of the 8 total blades on my quadcopter exploded / ripped apart mid-air and the quad fell to the ground. Some blades flew more than 10 meters, one blade had flown inwards and ripped ~4cm of heatshrink off the side of my video TX and one propeller was found in at least 3 pieces, split down the length of the blade into slivers.

While I cannot recommend these props for a quad using the same high-power motors and 4S battery setup, I do believe these props operate fine with a more moderate / 3S setup.

Here is a link to a video of the incident: https://www.youtube.com/watch?v=8Ut29iIa2xw

toste. davvero toste

verified_user Quality:
trending_up Value:
playlist_add_check Overall:

toste. davvero toste

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