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-   -   AMB transponders (https://www.rctech.net/forum/nitro-off-road/366702-amb-transponders.html)

mrbusta 02-02-2010 12:22 AM

AMB transponders
 
can someone let me know are the amb pt good for unregulated 2s rx lipo
power as i want to run the 7955tg and the m11x rx unregulated
and unsure if thats safe or not thanks in advancs

imaxx21 02-02-2010 12:27 AM

yes they are

mblgjr 02-02-2010 12:53 AM

I've run an AMB unregulated without issue.

I haven't heard of anyone having issues doing this either.

Rampokker 02-02-2010 01:12 AM

They're rated for 5-8VDC. I don't think 0.4V (due to fully charged 2S lipo voltage = 8.4V) is going to be too much of an issue. When you're using more than 8V to supply the transponder, you're supposed to use a resistor in series with the transponder.


When a power voltage of more than 8 VDC is to be used, a
resistor of 100 ohms per volt over 8 VDC must be connected
in series with the red wire. So 10 VDC means 200 ohms in
series with the red wire. Power of the resistor should be/ is
0.1 watt per volt, so 0.2 watt or more in case of 10 VDC.

mrbusta 02-02-2010 02:20 AM

hello
 
thanks lads good info needed

madweazl 02-02-2010 05:58 AM

I havent had any issues with mine yet.

Integra 02-02-2010 07:16 AM


Originally Posted by Rampokker (Post 6943824)
They're rated for 5-8VDC. I don't think 0.4V (due to fully charged 2S lipo voltage = 8.4V) is going to be too much of an issue. When you're using more than 8V to supply the transponder, you're supposed to use a resistor in series with the transponder.



this will be a thing of the past as the new Mylaps PT's are rated for 16V now. :nod:

ShagNastyEk9 02-02-2010 11:14 AM

i have heard problems with the m11x reciever handling straight lipo though, they are only rated to 6.0v input voltage

Frank L 02-02-2010 12:24 PM

I have been running unregulated since august without issues. I race about 2x per month.

Integra 02-02-2010 12:57 PM


Originally Posted by ShagNastyEk9 (Post 6945712)
i have heard problems with the m11x reciever handling straight lipo though, they are only rated to 6.0v input voltage


Originally Posted by Frank L (Post 6945954)
I have been running unregulated since august without issues. I race about 2x per month.



since when do you run a M11 Frank. ;)


Just messin with ya.

Grimlock212 02-02-2010 02:53 PM

A bit off topic, but why do you need to run a transponder? What would one do for me? I know it is a racer thing, but I am not sure what they do. Sorry for the dumb question.

Akhor 02-02-2010 02:58 PM


Originally Posted by Grimlock212 (Post 6946485)
A bit off topic, but why do you need to run a transponder? What would one do for me? I know it is a racer thing, but I am not sure what they do. Sorry for the dumb question.


They are the item on your car that allows lap times to be recorded.

Basically you put it on your car, when you pass a loop under the dirt, a signal is sent to a computer software and it updates your time/place in the race.

If you are just bashing around, there is absolutely no need for one.

Grimlock212 02-02-2010 03:01 PM

I am building up my first racer right now. Is this something I need to add to my shopping list? I know I see them on the other racer cars at my track, so I guess I probably want one, right?

And if so, what would be compatible with the Losi 8ight I am building (Spektrum receiver and a Losi 2C 7.4v Lipo)?

Sorry for being a thread ninja. :batman:

Gixxer2k4 02-02-2010 03:11 PM

You dont have to worry about compatibilty for PT's. There is only one brand. They run about 100.00 tho. People are buying some that are a generic brand which are about half the price.

mrbusta 02-02-2010 03:12 PM


Originally Posted by Grimlock212 (Post 6946527)
I am building up my first racer right now. Is this something I need to add to my shopping list? I know I see them on the other racer cars at my track, so I guess I probably want one, right?

And if so, what would be compatible with the Losi 8ight I am building (Spektrum receiver and a Losi 2C 7.4v Lipo)?

Sorry for being a thread ninja. :batman:

ill put it this way if u run major events its a must and even club events its good to have as its a pain in the arse to use the club ones due to forgetting puttin it in wich can do
and its one less thing to worry about and no thing such as being a thread ninja u need help that is what these are for enjoy u racing dude and welcome to it


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