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-   -   What do i need electronic guru's? (https://www.rcuniverse.com/forum/rc-car-general-discussions-179/7110703-what-do-i-need-electronic-gurus.html)

cummins driver 02-20-2008 11:03 PM

What do i need electronic guru's?
 
I am converting a T-Maxx into a gasser with a weedeater motor. I want to run a 6 cell 7.2v battery instead of 4 AA's so that i can just recharge and go. What is the easiest way to go about doing this? I have a couple of old speed control's I could use if i need them.

Im thinking I can plug my ESC which would be fed off a 7.2v battery into the "battery" plug in on the reciever, and just plug my throttle servo in where it would normally go? Is this right?


Im a little rusty on the electronics side of things, so what is the best way for me to get the reciever to run the throttle/brake, and steering servo off of a 7.2v battery? thanks

Eric

Specialzed 02-20-2008 11:05 PM

RE: What do i need electronic guru's?
 
your reciver will run off battery's anyway so just get a 6 cell pack, change the connecters to a 3 prong reciver plug and then plug in your servos.

cummins driver 02-20-2008 11:13 PM

RE: What do i need electronic guru's?
 
So an extra 1.2 volts wont hurt my reciever or servo's? That is simple enough if I can get anway with doing that.

annie_himself 02-20-2008 11:20 PM

RE: What do i need electronic guru's?
 
That extra voltage will hurt the servos. Run 5-cell, maybe a sub-c pack.

cummins driver 02-20-2008 11:41 PM

RE: What do i need electronic guru's?
 
I was afraid it might. I really dont want to mess with the pack though. I have an old Duratrax ESC that is dead, but still runs everything else fine, so that is what i will end up using probably. Unless i find a better way that doesent cost me much.

hands without shadows 02-20-2008 11:46 PM

RE: What do i need electronic guru's?
 
A 5 cell pack would be ideal. If your charger can take it you could just unsolder a cell from a 6 cell pack.

My second choice would be the [link=http://www.horizonhobby.com/Products/Default.aspx?ProdID=CSECCBEC]CC BEC[/link]. This little gadget will take the voltage from your 6 cell pack (all the way up to 20 cells if you want) and keep it at a steady voltage. The voltage can be adjusted using the castle link (same one you need for many of their ESCs), so you could set the voltage at 5-6v or even 7v if you want to push your servos a little. Its a great deal for the price too.

If you have an ESC laying around then yes, you could plug the 6 cell pack into that, plug the ESC into the battery jack on your receiver, and plug your servos into the receiver. Seems a bit bulky and ghetto but it will work provided your BEC can provide enough current for your servos. What servos and ESC are you planning on using?

cummins driver 02-21-2008 12:05 AM

RE: What do i need electronic guru's?
 
Yes, it will be a little ghetto, but then again, a 5lb motor on a 24" long truck is ghetto to begin with. :D I may change it later, but I just want to get it working for now. I have a Hitech 945mg servo for steering, and a 2055 traxxas for the throttle/brake. The ESC is a duratrax 16t intellispeed. Nothing hi tech, but i want to get it working for now.

That little gadget you have the link to is really neat though. Maybe when i get this truck how i want it, and want to clean it up some, ill buy that. I think I can hide the ESC ok right now though.

Eric

s7jstep1 02-21-2008 02:08 AM

RE: What do i need electronic guru's?
 
just get a [link=http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXHFP5&P=ML]revo reciever pack[/link].


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