Sparking

[dasboata]

Is there a way to minimize the sparking when I connect my Lipos it is melting the connectors is this normal !!! thanks Chris

[D. Newland]

What voltage, Chris? The higher voltage stuff really pops. Typically, 4S won't cause any damage.

You can set up a sacraficial connection with a smaller/cheaper connector. Or, It could be as simple as having 2 short, solid 8 ga wire that you temporarily place in each connector and touch together, taking the spark hit. Just like you do when you're hot wiring a car.

Then, plug the connectors together as you typically do.

The pop is charging the capacitors, so once it pops, you can then plug in normally without any drama.

[siberianhusky]

Do a search of anti-spark, there is a diagram of a simple circuit using a 100ohm resistor you connect first to charge the caps. then complete the battery connection. Looks like about a 5 watt that came with mine.

[dasboata]

What voltage, Chris? The higher voltage stuff really pops. Typically, 4S won't cause any damage.

You can set up a sacraficial connection with a smaller/cheaper connector. Or, It could be as simple as having 2 short, solid 8 ga wire that you temporarily place in each connector and touch together, taking the spark hit. Just like you do when you're hot wiring a car.

Then, plug the connectors together as you typically do.

The pop is charging the capacitors, so once it pops, you can then plug in normally without any drama.

Do a search of anti-spark, there is a diagram of a simple circuit using a 100ohm resistor you connect first to charge the caps. then complete the battery connection. Looks like about a 5 watt that came with mine.

5S I will do a search thanks

[mappo]

Is there a way to minimize the sparking when I connect my Lipos it is melting the connectors is this normal !!! thanks Chris

http://forums.offshoreelectrics.com/...ad.php?t=14107

[m4a1usr]

What do you have Chris? I have herds of that kind of stuff. But I need to know what speedo you got. For Castle speedos you need very low resistance anti-spark setups. Like 1 ohm at 5 watts. For some of the others you can go ahead change the component sizes. Just depends on what speedo you got. Arming and the speedo seeing what cell capacity you have plugged in is the key. Give me some more details.

John

[dasboata]

What do you have Chris? I have herds of that kind of stuff. But I need to know what speedo you got. For Castle speedos you need very low resistance anti-spark setups. Like 1 ohm at 5 watts. For some of the others you can go ahead change the component sizes. Just depends on what speedo you got. Arming and the speedo seeing what cell capacity you have plugged in is the key. Give me some more details.

John

just a 180 HK they sell here. How about I hook up a switch to charge my caps and the switch would take the load ?

[m4a1usr]

I would go with a doubling of the stock capacitance. You probably have three 1000mfd caps rated at 50 volts. Thats my guess. Its what I have on my Turnigy 180's. Add a cap bank. Others have already asked what cell count you are running. If you going to the full 6S rating I would bump up to an Etti high voltage cap bank but using no internal BEC. If your only running 4S (I will not run any of my T180's over that) and you are getting some serious sparking maybe what you have is some bad caps. Wouldnt be the first time. A guy just posted yesterday about receiving a new Castle HV speedo with the wrong caps installed.

If you need a spark arrestor setup I can hook you up. Some 22 ga wire soldered to a 10 or 20 ohm 2 watt resistor with a small connector for charging. Easy job. Just let me know.

John

[dasboata]

5cell I did mention that <<<not sure I want to go threw that much trouble I just might do the resistor thing thanks guys

[gultch]

so would a 1 ohm at 5 watts work on any speedo example
turnigy 180 with 6 caps
phoenix ice 160hv
hydra 240 lv
turnigy 90 amp
would u just have to wait a little longer for the caps to charge on some different speedos
thanks

[gultch]

or will a 1 ohm at 10 watts work on any speedo thanks

[m4a1usr]

so would a 1 ohm at 5 watts work on any speedo example
turnigy 180 with 6 caps
phoenix ice 160hv
hydra 240 lv
turnigy 90 amp
would u just have to wait a little longer for the caps to charge on some different speedos
thanks

I wouldnt run a 1 ohm resistor unless its a factory recommendation. It charges very fast and still sparks the bullets. I think Castle Creations is the only one recommending such a low resistor. And thats due to the esc recognizing the correct amount of cells being connected. 1 ohm at 5 watts (a 2 watt will work) is what Joe Ford has recommended. I have been using 10 to 15 ohm resistors lately in 6S and larger esc. 2 watts. Depends on what I find laying around at work.

John

[bowzr6]

I've been using this set up for my high power systems. I use 2 x 63V 180uF capacitors and EC5 connectors...Anti-Spark built-in.
hope this helps

[Chilli]

Here is one I did Chris. Sometimes I use it. Sometimes I dont. IMO there is no need to permanently wire a resister into your set up. All you do is touch the leads and the capacitors charge in a second. They will hold the charge for a while so just disconnect the resister and plug your pack in. Just another way to do it. Find out what your ECS manufaturer recommends.

http://forums.offshoreelectrics.com/...spark+arrestor

[Punisher 67]

This should help