Voltage gains vs weight = run time?

[BrianG]

Probably more of a safety measure than anything. 14.8v isn't bad, but getting up to the 8s+ range, and the voltages start getting pretty serious.

[starscream]

Originally Posted by BrianG

Probably more of a safety measure than anything. 14.8v isn't bad, but getting up to the 8s+ range, and the voltages start getting pretty serious.

Point taken but a dead short is gonna leave a big mark regardless of whether its 4S or 8S

Keep in mind that it isn't volts that kill its current/AMPS

A 12awg wire can only physically handle a finite amount of current

I personally run my 8S lipo's with 12awg wires and 35amp power poles so hopefully that'll reduce the potential damage.

I think 6S would be a reasonable alternative

[BrianG]

Originally Posted by starscream

...Keep in mind that it isn't volts that kill its current/AMPS...

True, around 0.015A to be more precise.

And I'm not saying it is justified, but I think if people start feeling the voltage, they will make more sudden movements in response. I can start feeling it on my figertips at around 30V. It's not enough to jerk my hand away, but other people might. especially if they are already nervous about it (which causes sweating, which lowers your resistance, which creates more current flow, which causes more sweating, etc...).

Also, for a given wire resistance, you get a lot more potential current with higher voltages than with low when shorted.

Yeah, it's reaching, but I can't think of any other reason for the limit.

[starscream]

Originally Posted by BrianG

True, around 0.015A to be more precise.

And I'm not saying it is justified, but I think if people start feeling the voltage, they will make more sudden movements in response. I can start feeling it on my figertips at around 30V. It's not enough to jerk my hand away, but other people might. especially if they are already nervous about it (which causes sweating, which lowers your resistance, which creates more current flow, which causes more sweating, etc...).

Also, for a given wire resistance, you get a lot more potential current with higher voltages than with low when shorted.

Yeah, it's reaching, but I can't think of any other reason for the limit.

8S has been my standard for a while now. I run 8S Apogee 2200's and the 12S sentilon which gets me around 25 minutes in my MBX5T on a small track. I've never felt voltage from any pack and really haven't worried about a dead short. This weekend, like a complete idiot, I connected my 2 4S apogee packs together. There was a small pop on the black powerpole connectors and both sides of the connectors seemed like they latched to one aother as if they were mangetically pulled together. I immediatly pulled them apart and saw no signs of puffing nor any noticable heat. Anyway, I guess all things come with risk, you just have to take the needed caution not to kill yourself
I'm not sure how much damage I did to my packs but they still work, for now anyway...

Note to self: when connecting battery leads to RC you MUST be fully awake and sober

[jhautz]

Originally Posted by starscream

8S has been my standard for a while now. I run 8S Apogee 2200's and the 12S sentilon which gets me around 25 minutes in my MBX5T on a small track. I've never felt voltage from any pack and really haven't worried about a dead short. This weekend, like a complete idiot, I connected my 2 4S apogee packs together. There was a small pop on the black powerpole connectors and both sides of the connectors seemed like they latched to one aother as if they were mangetically pulled together. I immediatly pulled them apart and saw no signs of puffing nor any noticable heat. Anyway, I guess all things come with risk, you just have to take the needed caution not to kill yourself
I'm not sure how much damage I did to my packs but they still work, for now anyway...

Note to self: when connecting battery leads to RC you MUST be fully awake and sober

If your not awake... THAT will sure wake you up.

[starscream]

Originally Posted by jhautz

If your not awake... THAT will sure wake you up.

I'd say thats one helluva way to start your morning and a quick cure for a hangover

It'll put some pep in your step