will this work for dropping voltage for winch

[discgolferlee]

I am running 3s in my scx10. got a 3 racing winch and from what I have read 11.1v is going to fry it but it likes 9v. so besides spending 20+ bucks on a castle bec to adjust voltage, what are some cheaper options.
I was looking into this lm7809 which offers 9v output.
or is that too much juice for winch motor and/or controller. any suggestions appreciated

the lm7806 outputs 6 volts
lm7808 outputs 8 volts
info on these found here

http://www.fairchildsemi.com/ds/LM/LM7809.pdf

I also wondered why can't you just power this thing off your rx???

 

[WIDELOAD]

Cant open the PDF to check the stats on what you're talking about to drop the voltage.

But i can answer your 2nd question.

You CAN run them off you rx (splice the power wires into the pos & neg in the wires going to the rx) but they are piss-ant slow and weak.


A 2nd option to run the winch is a separate small brushed esc. It doesnt even need to be 3s rated as the amp draw of the winch is only 2amps at stall or somthing like that.
Just an option.

 

[discgolferlee]

Cant open the PDF to check the stats on what you're talking about to drop the voltage.

But i can answer your 2nd question.

You CAN run them off you rx (splice the power wires into the pos & neg in the wires going to the rx) but they are piss-ant slow and weak.


A 2nd option to run the winch is a separate small brushed esc. It doesnt even need to be 3s rated as the amp draw of the winch is only 2amps at stall or somthing like that.
Just an option.

for the price of a small brushed esc I think a castle bec would be cheaper and smaller. so the winch draws 2amp. hmm might not work with the above mentioned as I think it's rated to 1amp

 

[WIDELOAD]

If they are only rated to 1amp i wouldnt do it...might let out the magic smoke..

 

[heyok]

Maybe have a look at my winch controller. It takes power from your receiver.
See if it will do what you want. The link is in my sig.

Thanks,
Al

 

[freetimecrawler]

Just run a small seperate 7.2v reciever pack for the winch, I have no problem that way with both my 3R's

 

[0lllllll0]

Ok, not trying to hijack your thread, just trying to learn how these winches work myself.

I have a 3Racing winch also. I see it comes with one of those white plugs, what are they Tamiya plugs or something? So do these winches HAVE to be plugged into a battery direct, or can it just be plugged into the 3rd channel on the RX? Will it be powered and controlled by the rx and my remote?

Just trying to learn all of this.

Thanks

 

[discgolferlee]

One thing I'm wondering....... I got a futaba 4pl with r2104gf high voltage rx. So if I run it power thru my rx will winch run at 8.4 volts. Rx specs 4.8-8.4 I believe. How does rx know how much power to issue to what's plugged into channels

rx
http://www.gpdealera.com/cgi-bin/wgainf100p.pgm?I=FUTL7616

 

[discgolferlee]

Maybe have a look at my winch controller. It takes power from your receiver.
See if it will do what you want. The link is in my sig.

Thanks,
Al

thanks for suggestion but I have no idea how it would change anything for someone without a servo winch. wouldn't you get 6v out of just powering the winch directly off the rx. or will it be 6v shared with servo. not exactly sure how that works. my rx does 3.5-8.4v ( futaba r2104gf)
I could be thinking about it all wrong though???

 

[heyok]

My controller passes power from the receiver to the winch. You can use my controller on a servo winch or a 3racing winch or whatever - as long as it is a brushed motor.
Very simple to hook up as you only have to plug into the receiver and make two connections to the winch. You don't have to deal with another battery.

 

[discgolferlee]

My controller passes power from the receiver to the winch. You can use my controller on a servo winch or a 3racing winch or whatever - as long as it is a brushed motor.
Very simple to hook up as you only have to plug into the receiver and make two connections to the winch. You don't have to deal with another battery.

couldn't you accomplish the same thing by wiring the battery wires on winch to servo lead and plug into rx?? sorry confused as to what it would actually do for me

 

[WIDELOAD]

couldn't you accomplish the same thing by wiring the battery wires on winch to servo lead and plug into rx?? sorry confused as to what it would actually do for me

Yeah works exact ally the same as jacking the power wires into the rx lead on the stock winch controller. Still only works off what ever power is going to the rx. So if your bec is set to 6v for the servo, that is the same as what the winch would receive..

6v for a 3r winch is not enough, it wouldn't pull a greased stick of a dead dingo's arse.

If you put 8.4 into your rx as well that is what the servo will get. Which will probably kill your servo.

Ok, not trying to hijack your thread, just trying to learn how these winches work myself.
I have a 3Racing winch also. I see it comes with one of those white plugs, what are they Tamiya plugs or something? So do these winches HAVE to be plugged into a battery direct, or can it just be plugged into the 3rd channel on the RX? Will it be powered and controlled by the rx and my remote?

They need an external power source to work. You can run is off the rx only by wiring the power input leads onto the pos & neg of the servo lead that goes to the rx. But as i said above, 6v on a 3r winch is WEAK:evil:.

 

[heyok]

couldn't you accomplish the same thing by wiring the battery wires on winch to servo lead and plug into rx?? sorry confused as to what it would actually do for me

Yes, it will only give you the voltage that the receiver is running from to your winch. If that's not enough to do the job, then your answer is elsewhere.

 

[discgolferlee]

Yes, it will only give you the voltage that the receiver is running from to your winch. If that's not enough to do the job, then your answer is elsewhere.

alright so now you have me really confused..... if the rx power (6v)is too weak why would anyone buy your controller if it puts only 6 volts as well???? Is it because the 3 racing motor is tiny and a servo based winch would operate fine on 6v due to larger motor???
sorry for the confusion just trying to figure some things out.

 

[constantmotion]

The receiver is only putting out 4.8V or so from your ESC's BEC. That same voltage is going to your servo as well. I would put in a External BEC cranked up to 6V. This will help you Steering servo as well. Other than that, run the External BEC to the winch by itself at 7.2V or so.

 

[discgolferlee]

The receiver is only putting out 4.8V or so from your ESC's BEC. That same voltage is going to your servo as well. I would put in a External BEC cranked up to 6V. This will help you Steering servo as well. Other than that, run the External BEC to the winch by itself at 7.2V or so.

my setup is being built still and my esc isn't here yet but it's the big boy so no bec for servo should be needed.
holmes hobbies br-xl

I may just bite the bullet and buy a cc bec just to regulate voltage to winch and maybe LED when they get here.
anyone know of a cheaper solution than the cc bec that works decent.

 

[heyok]

alright so now you have me really confused..... if the rx power (6v)is too weak why would anyone buy your controller if it puts only 6 volts as well???? Is it because the 3 racing motor is tiny and a servo based winch would operate fine on 6v due to larger motor???
sorry for the confusion just trying to figure some things out.

Most people are usually satisfied with running 6 volts to their 3racing winch or servo winch.

Good to see that you plan to run the Holmes ESC! You shouldn't have any BEC issues.

 

[discgolferlee]

Most people are usually satisfied with running 6 volts to their 3racing winch or servo winch.

Good to see that you plan to run the Holmes ESC! You shouldn't have any BEC issues.

thanks for answering all my questions heyok and the others who have repsonded.