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[Terry]

Hi Gents, I have finally gone 2.4GHz (bought a Futaba 2HR). The destructions say 6 volts for the Tx, can I get away with 4.8 ?


Cheers, Terry.

[Taranis]

Would work for a very reduced period. Low voltage warning kicks in at 4volts

[john44]

I would opt for 6v at 4.8v you are very near to fail safe and if your tx shuts down your
Rx would go into fail safe mode and whatever you have set that at in some cases full
Forwards you could lose your model, that has happened on our lake.
Stick to 6v.


John

[DaveM]

Transmitters these days take very little current c/w those we used even ten years ago. By all means fit 4 x 1.5v alkaline cells BUT make sure they're a reputable make (e.g. Duracell) and not those cheap ones from the local discount store ("Euroland"?).
DaveM

[Netleyned]

("Euroland"?)
Formerly known as Schillingland
Ned

[DaveM]

("Euroland"?)
Formerly known as Schillingland
Ned

That's ALMOST a Googlewhack, Ned.
"6/10 - should try a little harder".
DM

[Terry]

Thanks for the replies, 6 volt it is, alles klar.


Cheers, Terry.

[Howard H]

Hi there,
Coming in on the end of this thread, I have a Futaba R304SB receiver and its instructions state that a 4.8 to 7.2v power source is required but NOT dry cell batteries which has confused me a bit. It's for an IOM yacht running a Kingmax sailwinch rated at 6v max, so I'm using a 6v NimH pack at present - switching to LiPo at 7.4v rating could, I suppose, be ambitious?
Howard

[john44]

I think the dry cell they are referring to could mean lead jell cell batteries because they can reach over their
stated voltage once fully charged eg.12v could reach 13.5 v
Stick with the 6v you don’t want to damage your sail winch.

John

[Martin (Admin)]

[malcolmfrary]

Hi there,
Coming in on the end of this thread, I have a Futaba R304SB receiver and its instructions state that a 4.8 to 7.2v power source is required but NOT dry cell batteries which has confused me a bit. It's for an IOM yacht running a Kingmax sailwinch rated at 6v max, so I'm using a 6v NimH pack at present - switching to LiPo at 7.4v rating could, I suppose, be ambitious?
Howard

The thread started with a query about transmitter batteries, and for a low drain application reputable Alkaline batteries are good.  Just a question of remembering to switch off at the end of the session.
The receiver battery, on the other hand, does not just power the receiver, but everything plugged into it.  Alkaline batteries will simply not be able to supply the current required, NiMH will.
Switching to a 7.4 volt battery that can easily sustain that voltage at high current will shorten the life of the 6 volt rated electronics, possibly drastically.  If it is one of the standard servo size KingMax's, I would be very wary about using it in an IOM if looking for the performance that an IOM can offer.  Mechanically, they are great, but to fit into the space left by the multi turn pot, the electronics are ultra small, and it is very easy to let the magic smoke out.  Upping the supply voltage will not help.