Model Boat Mayhem

Technical, Techniques, Hints, and Tips => Radio Equipment => Topic started by: U-33 on February 13, 2016, 08:31:05 pm

Title: Technical assistance needed - Carson Reflex Pro radio
Post by: U-33 on February 13, 2016, 08:31:05 pm

I've just bought a new radio and a couple of receivers, one of which is going into the MotorFlote...radio is a Carson Reflex Pro 14, four proportional controls, five via on/off switches and five more via on/off/on switches.


In the book of words it says it's not recommended to feed the rx with more than 8.4v...the 'Flote has a 12v x 2200a/h niMh pack, so a problem rears its ugly head.


Question:
Is there a way of getting 8.4v to the rx?
If it helps, the esc is an Mtroniks Viper 15, Futaba 3003 servo for the rudder, one micro servo operating a microswitch for the nav lights, a Turnigy electronic switcher for the spotlamp and maybe another for a flashing beacon if I decide to fit one.

Title: Re: Technical assistance needed, please chaps...
Post by: JimG on February 13, 2016, 08:59:59 pm

You do not want to provide the Rx with 8.4V. The rest of the electronics will be for a maximum of 6V so if the esc has a bec this will provide the correct voltage. If not then a separate BEC will be needed or a 4 or 5 cell NiMH supply will be needed.
The 8.4 V given is the maximum voltage for those who want to use High voltage servos and electronics not the voltage you need to use, normal voltages will work OK. A Futaba 3003 will not last long at 8.4V.

Jim

Title: Re: Technical assistance needed, please chaps...
Post by: U-33 on February 13, 2016, 09:04:39 pm

Aha...so, if the esc has a BEC built in (which it has) I don't have to worry? Is that correct?

Title: Re: Technical assistance needed - Carson Reflex Pro radio
Post by: Stavros on February 13, 2016, 10:33:20 pm

correct

Dave

Title: Re: Technical assistance needed - Carson Reflex Pro radio
Post by: U-33 on February 13, 2016, 11:05:24 pm

Cheers Dave...I didn't want to blow the thing up before I'd even used it.


Thanks guys...

Title: Re: Technical assistance needed - Carson Reflex Pro radio
Post by: U-33 on February 14, 2016, 10:07:20 am

Thanks to Mr ACTion (Dave) for sending me an idiots guide to BEC's....I am now truly enlightened.   :-))

Title: Re: Technical assistance needed - Carson Reflex Pro radio
Post by: sparkey on February 14, 2016, 12:40:08 pm

 :-)) Richard you can use a Tornigy voltage reducer which will give you a choice of 5 or 6 volts,I have a couple in my boats which feed Rx from a 11.1 v lipo's with no problems,cost about a fiver,you can use on any battery up to 42v......Ray :-))     

Title: Re: Technical assistance needed - Carson Reflex Pro radio
Post by: richald on February 14, 2016, 10:26:54 pm

or as I recommended on another thread ....

A UBEC switchable for 5 volt or 6 volt operation and supplying 3 Amps

look at the following ....

http://www.banggood.com/Hobbywing-3A-UBEC-5V-6V-Switch-Mode-BEC-For-RC-Models-p-915037.html (http://www.banggood.com/Hobbywing-3A-UBEC-5V-6V-Switch-Mode-BEC-For-RC-Models-p-915037.html)

90 reviews from purchasers and scoring 4.8 out of 5

Richard

Title: Re: Technical assistance needed - Carson Reflex Pro radio
Post by: inertia on February 15, 2016, 08:58:07 am

Rich
Just to emphasise that when the speed controller does have BEC (like the Viper 15) you mustn't also fit a separate one. If your installation requires significantly more than 1A for the servos etc then it's advisable to disable the BEC in the ESC (by removing the Red wire from the 3-pin plug) and then use either one of the aforementioned units or a separate Rx battery pack.
DM