am i using the wrong solder?!?!

[carlcisneros]

Dana;
just look up to the reply #18

he had the same problem you did with a too long of a run on his packs,

and I agree with jeepers, go to a smaller prop,,,,,,,,,,,,,,,,,,,,,,,,,,,

and also, do not run so long,

[eboat]

theyre 5000 mah but i always end up putting like 5300 back into them. runtimes, say 4 to 5 minutes tops. the smallest wires are 12 gauge. they come stock on my seaking 180

60min/5min X 5300mah = 63.6 average amp draw

60min/4min X 5300mah = 79.5 average amp draw

I would have thought a 2200 KV motor on 4S and a 445 prop would draw alot more amps (if my math is right)

[wparsons]

Dana;
just look up to the reply #18

he had the same problem you did with a too long of a run on his packs,

and I agree with jeepers, go to a smaller prop,,,,,,,,,,,,,,,,,,,,,,,,,,,

and also, do not run so long,

His amp draw isn't too bad at all, I think he just needs to run for a shorter time or run a 4s2p setup to add more run time.

The prop should be fine, since even if he's only at WOT 75% of the time he's still under 120a constant once you average out the draw over the whole 4 (~78a) minute or 5 (~63a) minute run. He also doesn't say that his motor or ESC are coming in too hot either that I've seen?

[dana]

well boys i just ordered some 4s packs, instead of the 2s series thing i had goin on. im gonna move to 6.5mm on batteries and try a 60/40 solder this time. and yes i will go to my 442, or maybe a 444. i guess i just have a hard time cutting my run times... ya'll know how fun they are to drive

[dana]

Dana, maybe your iron isn't hot enough?

I use the rosin core stuff for electrical connections, and the silver for mechanical connections.
A 4074 2200kv turning a m445 on 4s is a pretty hot setup. I know there are plenty of people pushing things further but that is far from what I would call mild. 140-150A?

I would go with bigger bullets and use the rosin core solder. Also, if youre packs are 5000mah, find out what you have to do to only put 4000mah back into them MAX. Lots of packs wil take more than the rated capacity if you over-discharge them. Proper discharge is no more than 80% of the pack's rated mah...don't go by pack voltage.

im the guy that runs em till lvc. i guess im a jerk lol but my lvc is set at 3.4. i may be exaggerating run times.. i dunno. ive never timed a run before. i should be

[wparsons]

I wouldn't bother changing the prop just yet, if your motor is coming it at ok temps then the prop isn't the issue. Running a 4s2p setup will let you get an easy 5 minutes out of the setup.

[FloatDaBoat]

Resistivity Comparison

Supplied in the chart are some resistivity values relevant to soldering connectors to copper wire. The weak link is the solder connection itself (highest resistance values). What one should strive for is the best possible mechanical connection & contact patch between the wire & connector BEFORE soldering. This will reduce the possibility of the solder melting when dealing with high current loads.

[Steven Vaccaro]

I,m with Parsons, I think you are drawing far more amps than you think.

[Insaniac]

I think it's your setup. I tried a UL-1 w/120A ESC and m445 in an FE-30, melted the solder connections and they came apart. Either use a more efficient motor/ESC combo or prop down.