Transponder

#1

Running TT at Road Atlanta so I need some advice on where to install my transponder.

TIA

Greg

#2

I installed mine with an L bracket pointing down into the hole where the A/C dryer used to be. The hot side of the ignition coil is a good place to pick up power and the ground point on the shock tower is close by, which makes wiring it in easy.

#3

Plenty of room in the trunk with easy access to the battery. :wink:

#4

Gasman wrote:

But that location is advantageous only if you race at Road Atlanta and loop it through Turn 12 on the last lap. Otherwise, you lose by a car length every time.

:stuck_out_tongue:

Steve D.

#5

jlevie wrote:

Thats a good idea, but is picking up power at the coil okay to do?

#6

jlevie wrote:

I did mine the exact same way :cheer: It’s an easy installation.

Cheers,
Scott Neville
#44 NorCal SpecE30
www.norcalspece30.com

#7

That circuit has excess capacity, so no fears in that regard. The paranoid will place a 1A fuse between the coil and transponder.

#8

make sure you have good power to it, make sure you have a clear ‘view’ to the track and do not mount it too high up in the car or you will have problems because the signal isn’t all that strong.

#9

jlevie wrote:

That circuit has excess capacity, so no fears in that regard. The paranoid will place a 1A fuse between the coil and transponder.[/quote]

Is the fuse a good idea, I don’t want it to blow keeping me from getting scored for an entire run. Did you install a fuse in yours? I trust your input as you always have good technical info on BF.c especially in regards to wiring/electrical.

#10

87isMan wrote:

[quote]jlevie wrote:

That circuit has excess capacity, so no fears in that regard. The paranoid will place a 1A fuse between the coil and transponder.[/quote]

Is the fuse a good idea, I don’t want it to blow keeping me from getting scored for an entire run. Did you install a fuse in yours? I trust your input as you always have good technical info on BF.c especially in regards to wiring/electrical.[/quote]

A transponder doesn’t pull much current so the 12A fuse idea would be fine. I don’t have a fuse there, but that’s as much laziness as anything else.

#11

Ranger wrote:

[quote]87isMan wrote:

[quote]jlevie wrote:

That circuit has excess capacity, so no fears in that regard. The paranoid will place a 1A fuse between the coil and transponder.[/quote]

Is the fuse a good idea, I don’t want it to blow keeping me from getting scored for an entire run. Did you install a fuse in yours? I trust your input as you always have good technical info on BF.c especially in regards to wiring/electrical.[/quote]

A transponder doesn’t pull much current so the 12A fuse idea would be fine. I don’t have a fuse there, but that’s as much laziness as anything else.[/quote]

Thanks Scott, I guess I am just overthinking this. I just don’t want to screw it up as this is my first timed/scored event.

Just to keep up with SE smack talk, $20 my fastest time is better than yours :unsure: .

#12

A fuse would be a good idea, but I didn’t use one. The transponder only draws something like 30-40ma, so unless there’s a serious problem in the transponder (which would render it inop) a 1A fuse has zero chances of blowing.

#13

The purpose of a fuse is to prevent wires from catching fire in the event of a short. That is, The fuse should be selected based upon the current capacity of the wire, so that the fuse will blow before the wire melts.

#14

Digging this one back up.

Any easy sources for transponder power on the driver’s side? I’m sure I can find something if I probe around with the multi meter but I’m not opposed to the saving that time if someone already knows where to go. Prefer a switched source that is not hot all the time.

#15

i just ran the cable into my switch panel inside the car. pretty easy to run it in via the firewall grommet.

#16

I have mine wired into the fuse box redneck style. There is also something like this http://www.amazon.com/Pico-0957PT-Fuse-Circuit-Holder/dp/B001QRSBY8

probably not the right size, but you get the point.

#17

Where and what kind of transponder do I need to get? How much am i looking at spending?

#18

AMB Transponder. Not cheap new (around $400) and pretty impossible to find used. Get the hard wired one so you don’t need to bother with batteries.

#19

Used might be unworkable. AMB makes it hard to xfer someone else’s transponder into your name. You’ll get lap times, but your MYLAPS data will always be wrong.

#20

not any more, they actually offer a transfer for a fee now.