Re: receiver question 1b: interference [TANKS]

["Amir Tahvildaran" <adt22-at-drexel.edu>]

Yeah, I just gotta make sure its a 1/6th scale recoil.

I feel like I'll be ready for the fall season, but who knows how long that 
fabled last 20% will take.

Sorry to hear about your TTS (especially because it made me remember I 
skipped the gooping on my last join).  I actually had to lengthen my TTS 
this last rebuild, so its got two joins per track -- and none of that scarf 
joint junk -- I just did a full out overlap over 3 or 4 treads.  Its a 
little oafy but ... oh well.  So are you salvaging your current TTS, or full 
rebuild?  Any pictures of the carnage?

-Amir

----- Original Message ----- 
From: "JOHN PITTELLI" <jplily-at-yahoo.com>
To: <tanks-at-rctankcombat.com>
Sent: Wednesday, June 21, 2006 10:00 PM
Subject: Re: receiver question 1b: interference [TANKS]


> Amir,
>      You've just developed a gun recoil. People will
> pay BIG money fo' dat. What people? I dun no. LOL.So,
> ready for the fall season?
>
> John"rebuilding my tts" Pittelli
>
>
>
> --- Amir Tahvildaran <adt22-at-drexel.edu> wrote:
>
>> Turns out that it was the receiver power leads on
>> the scorpion mini that needed to be snipped.
>>
>> Next question :-)
>>
>> I'm seeing some kind of interference from the
>> trigger firing - I hooked up the second channel (1/2
>> channel) of the MRC to a door lock actuator (via a
>> relay) and now when I fire and release it, the
>> turret rotate jolts a little - the scorpion mini is
>> somehow activated (it coincides with the relays
>> clicking).  Right now I'm guessing I should have
>> diodes somewhere in the mix, but again would
>> appreciate any pointers.
>>
>> Thanks,
>> Amir
>>   ----- Original Message ----- 
>>   From: Amir Tahvildaran
>>   To: tanks-at-rctankcombat.com
>>   Sent: Wednesday, June 21, 2006 12:50 AM
>>   Subject: Re: receiver question 1: powering [TANKS]
>>
>>
>>   Awesome, thanks Frank.  This'll be tomorrow nights
>> project.
>>
>>   -Amir
>>     ----- Original Message ----- 
>>     From: Frank Pittelli
>>     To: tanks-at-rctankcombat.com
>>     Sent: Wednesday, June 21, 2006 12:35 AM
>>     Subject: Re: receiver question 1: powering
>> [TANKS]
>>
>>
>> Amir Tahvildaran wrote:
>> > While testing out my turret I noticed that my
>> receiver was powered up
>> > regardless of the state of the switch (controlling
>> the 4.8v pack).
>> >
>> > The set-up is that I have a 12v battery driving
>> the rotate and elevate
>> > motors.  The rotate is using a scorpion mini.  The
>> elevate is using one
>> > channel of the MRC controller.  The receiver has
>> its own 4 cell battery
>> > pack.
>>
>> All of the black and red connectors on the receiver
>> are tied together,
>> including the two power lines.  That is, the power
>> comes into the
>> receiver from the 4.8v battery and is distributed to
>> all of the servos
>> in parallel.
>>
>> Therefore, if you hook a 12v battery up to any of
>> the servos, then
>> you'll be adding a 12v battery in parallel with the
>> 4.8v battery,
>> resulting in the receiver circuit seeing a voltage
>> somewhere between 4.8
>> and 12v.  Although we've been running receivers
>> successfully at 7.2v for
>> many years, I'm not sure about going higher than
>> that.
>>
>> If you want to provide more power to the servos,
>> then the proper thing
>> to do is cut the "red" lead between the servo and
>> receiver, and hook the
>> "red" servo wire directly to the servo battery.  You
>> should also connect
>> the "black" wire from the receiver battery to the
>> "black" wire of the
>> servo battery to create a "common ground".  If you
>> want a single switch
>> to cutoff both batteries, you can insert it on the
>> common ground side of
>> the circuit.  See the attached circuit.
>>
>> Frank P.
>>
>> RxServoBatteryCircuit.png
>>
>
>
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