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What Motor Do I Need?

#1
Hello,

I want to get into this hobby so I made my own plane and I dont know what motor to use
the plane weighs just about 300g without any electronics inside (I don't have them yet) what motor
could lift my plane I was looking at this... https://hobbyking.com/en_us/brushle...943&indexName=hbk_live_magento_en_us_products Does anyone know if that is sutable I just don't
want to have to buy a 60A esc for a more powerfull motor as I don't have a very big budget.
 
#4
Hello,

I want to get into this hobby so I made my own plane and I dont know what motor to use
the plane weighs just about 300g without any electronics inside (I don't have them yet) what motor
could lift my plane I was looking at this... https://hobbyking.com/en_us/brushle...943&indexName=hbk_live_magento_en_us_products Does anyone know if that is sutable I just don't
want to have to buy a 60A esc for a more powerfull motor as I don't have a very big budget.
For what that sounds like, you shouldnt need anything near the 60A esc range. I would say get something like this: https://www.banggood.com/Racerstar-...-p-1083190.html?rmmds=search&cur_warehouse=CN
That motor has a theroetical total thrust of 885g, which should be lots for a plane that size. also that is assuming you are using a 1047 prop. You might not need a prop that size, but there is another thread somewhere about choosing the right prop. Also, that motor should work with a 25A esc just fine.
 

TDL

Active member
#5

Merv

Well-known member
#6
Keep in mind the 300g weight is empty, by the time you add motor, battery, servos & Rx, the AUW (all up weight) will more than double. It would be good to add up the weight of all the components to get a better handle on the AUW. Then look for a motor that will give a 1:1 thrust to weight ratio.
 
#7
Keep in mind the 300g weight is empty, by the time you add motor, battery, servos & Rx, the AUW (all up weight) will more than double. It would be good to add up the weight of all the components to get a better handle on the AUW. Then look for a motor that will give a 1:1 thrust to weight ratio.
Thats probably the safest way to do it:)