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How to choose a receiver

Old 05-04-2021, 08:07 AM
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obrien135
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Default How to choose a receiver

I purchased a set of electronics over the internet that includes a propeller and 1100 KV 40 amp brushless motor a brushless ESC I forget what else but it doesn't come with a receiver so I was wondering how you determine how many batteries you need to use. Is that determined by the ESC? How much do the servos affect the power requirements of the receiver? does the torque affect the amount of current the receiver has to deliver to the servos? If there's a standard voltage for the receiver how would I know what voltage of batteries to get for the ESC? Can I buy a spectrum receiver transmitter set to go with a non-spectrum set of ESC and motor and servos?

Last edited by obrien135; 05-04-2021 at 09:08 AM.
Old Today, 06:25 AM
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Flyingbaseball
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Originally Posted by obrien135 View Post
I purchased a set of electronics over the internet that includes a propeller and 1100 KV 40 amp brushless motor a brushless ESC I forget what else but it doesn't come with a receiver so I was wondering how you determine how many batteries you need to use. Is that determined by the ESC? How much do the servos affect the power requirements of the receiver? does the torque affect the amount of current the receiver has to deliver to the servos? If there's a standard voltage for the receiver how would I know what voltage of batteries to get for the ESC? Can I buy a spectrum receiver transmitter set to go with a non-spectrum set of ESC and motor and servos?
Your reciever does not really determine any of the voltage or battery requirements. It is actually the ESC that determines it. Look up your ESC on the internet and you should be able to find what batteries it is rated for (ie. 2s 3s 4s etc.) ESC's have a BEC (battery eliminator circuit) built in. A BEC lowers the voltage of the flight battery so that other electronics like servos and recievers can be powered off of it. For example a 3 cell lipo battery has a voltage of 11.1v but most receivers and servos operate off of 4.8v. The BEC brings the 11.1v down to 4.8v so that the receiver and servos can be powered without overpowering them. In some cases you can raised the BEC voltage to give your receiver more voltage so that you can have more power to your servos. But the servos and the receiver have to be rated for that. 4.8v is the standard voltage that most electronics will work of of. You mention using a spektrum receiver and transmitter. This would work fine even if the servos, motor, and esc are a different brand. As long as you have a receiver and transmitter on the same protocol (ie. Spektrum to Spektrum) your fine.

Last edited by Flyingbaseball; Today at 06:30 AM.

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