Re: Chevy S10 servo & battery connection problem

[MikeF]

replies inline...


Dilbert Firestorm <scanb31@*nospam*directvinternet*nospam*.com> wrote in
message news:3e189622$1_5@nopics.sjc...
> my chevy s10 building project has pretty much screeched to a halt. I hate
that
> when it happens. I'm stuck on servo assembly & connection.
>
> this is what I have.
>
> Airtronics MX-3 3-channel radio transmitter
> 2 Airtronics 94102 servos
> 1 Airtronics 92836 3-ch receiver
> 1 Airtronics standard switch harness
>
> Duratraxx Sanyo 3000 NiMH 6 cell 7.2v battery
>
> Tamiya mechanical speed controller


sounds good so far....



> heres the problem
>
> from what I can tell, Airtronics uses Z-connectors
>
> the battery uses a different type of connectors, has a bigger male
connector.


"Battery uses different type connector" hmmm.
The battery (6cell nimh) should use a standard "Tamiya Type" battery
connector. It plugs directly into the Msc.
should look like these:
http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXGG99&P=7


GENERALLY speaking, the radio runs off of its own little 4cell battery OR
you can plug it in to the BEC plug typically coming out of the MSC. Id be
surprised if your radio didnt come with its own 4cell "AA" alkaline battery
holder. Id use this to test & setup all the servos



> In this case, I can't test the servos because it doesn't have the right
connectors.
>
> did I get the wrong type of battery in regards to connectors & voltage?
> according to airtronics manual, said battery must be between 4.0-6.0 volts
> anything higher would cause the receiver to burn out.


No, you need a 7.2v 6 cell to properly run the car. You havent done anything
wrong yet.
The issue is what to power the radio from. Your manual really doesnt say
anything about receiver hook-up?
This is an important issue - id hate for you to burn out the rx before the
thing is even complete.


> anyway, the speed control has connectors for the power supply on one of
the
> lines, but on another line appears to have different connector to the
switch
> harness.


err...lets separate the wires on the msc into sets.

1. Power in. This plugs into the 7.2v battery Tamiya type connector
2. Power out. Two heavy guage wires ending in 'bullet' style connectors.
Hooks up to the motor.
3. resistor wires. Usually three medium guage wires that hook up to the
resistor
4. BEC out. This is a pair of thin wires ending in a Z connector for running
the radio reciever. This should plug into the radios' included switch
harness.

If you dont have #4 attached to the msc, then you will need a AA dry cell
battery case to operate the receiver. This kinda sucks, because you have the
weight of an additional battery and the amount of space it takes up.
I thought all MSC's had BEC leads these days, but the last electric car i
bought was a 1987 tamiya Hotshot.

Hopefully other tamiya owners can help you out with a work-around idea.

HTH, mike

[Dilbert Firestorm]

MikeF wrote:> replies inline...
>
>
> Dilbert Firestorm <scanb31@*nospam*directvinternet*nospam*.com> wrote in
> message news:3e189622$1_5@nopics.sjc...
>
>>my chevy s10 building project has pretty much screeched to a halt. I hate
>
> that
>
>>when it happens. I'm stuck on servo assembly & connection.
>>
>>this is what I have.
>>
>>Airtronics MX-3 3-channel radio transmitter
>>2 Airtronics 94102 servos
>>1 Airtronics 92836 3-ch receiver
>>1 Airtronics standard switch harness
>>
>>Duratraxx Sanyo 3000 NiMH 6 cell 7.2v battery
>>
>>Tamiya mechanical speed controller
>
>
>
> sounds good so far....
>
>
>
>
>>heres the problem
>>
>>from what I can tell, Airtronics uses Z-connectors
>>
>>the battery uses a different type of connectors, has a bigger male
>
> connector.
>
>
> "Battery uses different type connector" hmmm.
> The battery (6cell nimh) should use a standard "Tamiya Type" battery
> connector. It plugs directly into the Msc.
> should look like these:
> http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXGG99&P=7
>
>
> GENERALLY speaking, the radio runs off of its own little 4cell battery OR
> you can plug it in to the BEC plug typically coming out of the MSC. Id be
> surprised if your radio didnt come with its own 4cell "AA" alkaline battery
> holder. Id use this to test & setup all the servos
>

the transmitter did come with the 4 cell battery case. I'd been wondering what
this was for.... great idea to use for testing the servos.


>>In this case, I can't test the servos because it doesn't have the right
>
> connectors.
>
>>did I get the wrong type of battery in regards to connectors & voltage?
>>according to airtronics manual, said battery must be between 4.0-6.0 volts
>>anything higher would cause the receiver to burn out.
>
>
>
> No, you need a 7.2v 6 cell to properly run the car. You havent done anything
> wrong yet.
> The issue is what to power the radio from. Your manual really doesnt say
> anything about receiver hook-up?
> This is an important issue - id hate for you to burn out the rx before the
> thing is even complete.


Hmm, looks like both Tamiya threw me off on the set up diagram in the manual.
in it has the power cable shown hooked to a reciever. I now see that it was the
electronic speed control it was hooked up to. there is a diagram page not part
of the manual (kinda stupid if you ask me) that deal with set up the mech. speed
controller. it was kinda hard to follow.

Airtronics had the diagram pretty well done. I mistook the 6 cell battery shown
hooked up to the switch harness, it was the 4 cell battery. my bad!

I guess this can be dealt with

>>anyway, the speed control has connectors for the power supply on one of
>
> the
>
>>lines, but on another line appears to have different connector to the
>
> switch
>
>>harness.
>
>
>
> err...lets separate the wires on the msc into sets.
>
> 1. Power in. This plugs into the 7.2v battery Tamiya type connector
> 2. Power out. Two heavy guage wires ending in 'bullet' style connectors.
> Hooks up to the motor.
> 3. resistor wires. Usually three medium guage wires that hook up to the
> resistor
> 4. BEC out. This is a pair of thin wires ending in a Z connector for running
> the radio reciever. This should plug into the radios' included switch
> harness.
>
> If you dont have #4 attached to the msc, then you will need a AA dry cell
> battery case to operate the receiver. This kinda sucks, because you have the
> weight of an additional battery and the amount of space it takes up.
> I thought all MSC's had BEC leads these days, but the last electric car i
> bought was a 1987 tamiya Hotshot.
>
> Hopefully other tamiya owners can help you out with a work-around idea.

the other wires aren't a problem. Its #4. it has a red connector. this doesn't
fit the blue z-connectors. I take it that the red connector is the BEC
connector you're refering to?

hmmm... guess that narrows it down a bit.

looks like I need a male bec to female Z-connector adapter or cable.

didn't see anything like that on tower hobbies... curious omission......

[Dilbert Firestorm]

> err...lets separate the wires on the msc into sets.
>
> 1. Power in. This plugs into the 7.2v battery Tamiya type connector
> 2. Power out. Two heavy guage wires ending in 'bullet' style connectors.
> Hooks up to the motor.
> 3. resistor wires. Usually three medium guage wires that hook up to the
> resistor
> 4. BEC out. This is a pair of thin wires ending in a Z connector for running
> the radio reciever. This should plug into the radios' included switch
> harness.
>
> If you dont have #4 attached to the msc, then you will need a AA dry cell
> battery case to operate the receiver. This kinda sucks, because you have the
> weight of an additional battery and the amount of space it takes up.
> I thought all MSC's had BEC leads these days, but the last electric car i
> bought was a 1987 tamiya Hotshot.
>
> Hopefully other tamiya owners can help you out with a work-around idea.

oh yeah, almost forgot...

someone at RC Universe suggested that I get a z-connector cable & solder it to
the mechanical speed controller.

I'd rather not do that, but if that's the only way, then so be it.

[BBA]

Hey Excuse me PAL - TEXT ONLY

did you happen to see anyone else post a BIG ASS Binary file OR FILES??!!! ---
NO, YOU DID NOT!!!

THIS IS A TEXT ONLY NEWSGROUP!!!

Means - NO BINARIES, NO ATTACHMENTS, NO HTML FILES AND NO FRIGGEN PICTURES
PERIOD!!!!

Also please read and take into account our FAQ for News:Rec.Models.RC.Land @
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BBA

--
....and also check the loose nut behind the wheel!!!

http://www.billybadassrc.com
http://www.bbaproductions.com
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-----------------------------------------
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"Dilbert Firestorm" <scanb31@*nospam*directvinternet*nospam*.com> wrote in
message news:3e1a4ab8_1@nopics.sjc...
> this here is the battery connectors
>


--------------------------------------------------------------------------------

[Erik Tomlinson]

I didn't mean to post them on the newsgroup. It's extremely simple to take
pictures and post them on a free website, such as geocities, hypermart, etc
and just LINK TO THEM.

--
--Erik Tomlinson

"I want a cookie!"
"BBA" <removemechallenge@attbi.com> wrote in message
news:I32T9.493483$GR5.204832@rwcrnsc51.ops.asp.att .net...
> Hey Excuse me PAL - TEXT ONLY
>
> did you happen to see anyone else post a BIG ASS Binary file OR
FILES??!!! ---
> NO, YOU DID NOT!!!
>
> THIS IS A TEXT ONLY NEWSGROUP!!!
>
> Means - NO BINARIES, NO ATTACHMENTS, NO HTML FILES AND NO FRIGGEN PICTURES
> PERIOD!!!!
>
> Also please read and take into account our FAQ for News:Rec.Models.RC.Land
@
> http://www.faqs.org/faqs/models/rc-cars/newbie-guide
>
>
> BBA
>
> --
> ...and also check the loose nut behind the wheel!!!
>
> http://www.billybadassrc.com
> http://www.bbaproductions.com
> http://www.gblessusa.com
> -----------------------------------------
> Read and take HEED!
> FAQ - News:Rec.Models.RC.Land @
> http://www.faqs.org/faqs/models/rc-cars/newbie-guide
> FAQ - News:Rec.Photo.Digital @ http://bobatkins.photo.net/info/charter.htm
> FAQ - Usenet Noobee Guide @ http://tgos.org/newbie
> "Dilbert Firestorm" <scanb31@*nospam*directvinternet*nospam*.com> wrote in
> message news:3e1a4ab8_1@nopics.sjc...
> > this here is the battery connectors
> >
>
>
> --------------------------------------------------------------------------
------
>
>
>
>
>

[Dilbert Firestorm]

sorry, I was clueless :( my bad.

[Dilbert Firestorm]

problem solved. there is indeed an adapter for the BEC connector & the
Z-connector which apparently also goes by another name Futaba J connector.

problem is the part is about $3.00. I'd need to spend a bit more than just
$3.00 in dealing with postage or Fed Ex.

sigh....

[gouda]

Wow, that was......

Anyway, if you are using the speed control supplied with the truck, you'll have to use a separate battery supply for the radio. I've bult this truck and used a aftermarket (there are many) ESC that has a BEC supply. Then you don't use the supplied speed control, it's a much better set-up. The resistors in the Tamiya system just waste power. Speed a few bucks on a ESC. Your hobby shop will be able help you out.

[Jonny Hodgson]

Dilbert Firestorm wrote:

> the other wires aren't a problem. Its #4. it has a red connector.
> this doesn't fit the blue z-connectors. I take it that the red
> connector is the BEC connector you're refering to?
>
> hmmm... guess that narrows it down a bit.
>
> looks like I need a male bec to female Z-connector adapter or cable.

Normally, the radio gear includes an on-off switch which has a connector
for the Rx on one end, and the Tamiya MSC power connector on the other.
Are you sure you haven't got one of these?

Jonny

[Dilbert Firestorm]

Jonny Hodgson wrote:> Dilbert Firestorm wrote:
>
>
>>the other wires aren't a problem. Its #4. it has a red connector.
>>this doesn't fit the blue z-connectors. I take it that the red
>>connector is the BEC connector you're refering to?
>>
>>hmmm... guess that narrows it down a bit.
>>
>>looks like I need a male bec to female Z-connector adapter or cable.
>
>
> Normally, the radio gear includes an on-off switch which has a connector
> for the Rx on one end, and the Tamiya MSC power connector on the other.
> Are you sure you haven't got one of these?
>
> Jonny
>
>


It has both. the power connectors are fine, they fit. it's just the MSC BEC
lead to the on/off switch which doesn't fit.