am i using the wrong solder?!?!

[detox]

Regular 60/40 flux core solder should work. Upgrade to Castles beefier 6.5 bullets.


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[Boaterguy]

I think we have the same solder, It has no lead, I think I need some too, it doesn't melt very well, it could be that, it doesn't flow into the wires enough, therefore not a good connection

[HOTWATER]

I ran my tunnel the other day and damn near dumped (drained) two packs on two runs....alot of heat with the motor, batts and ESC ....yes the batt. wires and bullets were very hot too!...and one of the esc batt. bullets was crooked on the wire. Must have melted the solder but did not come apart. Today I ran the tunnel with the exact same setup BUT this time I kept the runtimes shorter...much better with nearly half of the heat buildup and no desoldered wires......

[dana]

Regular 60/40 flux core solder should work. Upgrade to Castles beefier 6.5 bullets.


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yeah im gonna upgrade, but i want to make sure im using the right solder before i go thru all the work

[dana]

I think we have the same solder, It has no lead, I think I need some too, it doesn't melt very well, it could be that, it doesn't flow into the wires enough, therefore not a good connection

see, when i solder with it, it flows in real nice and looks mint. im a picky bastard, so im confident im doing a better than average job. ive never had trouble getting it to flow :shrug:

[dana]

I ran my tunnel the other day and damn near dumped (drained) two packs....alot of heat with the motor, batts and ESC ....yes the batt. wires and bullets were very hot too!...and one of the esc batt. bullets was crooked on the wire. Must have melted the solder but did not come apart. Today I ran the tunnel with the exact same setup BUT this time I kept the runtimes shorter...much better with nearly half of the heat buildup and no desoldered wires......

this has happened to me recently, which is why im concerened. my runtimes arent super long. but yeah i had them melt but not come apart. i could tell cause some of the solder bled thru the heatshrink wrap and the wire was crooked. i know the wire was str8 with the bullets when i did them. what kinda solder do you use?

[detox]

Flux then tin the wires before soldering on connectors. I drill holes same size as connector in wood block to hold bullets while soldering.

[HOTWATER]

Dana...I use Stay Brite silver solder (Tower hobbies) Very nice stuff!

[HOTWATER]

Flux then tin the wires before soldering on connectors. I drill holes same size as connector in wood block to hold bullets while soldering.

Exactly what I do too bro....

[dana]

Flux then tin the wires before soldering on connectors. I drill holes same size as connector in wood block to hold bullets while soldering.

yep, i do exactly this myself

[carlcisneros]

I have sized holes drilled into the table top in the garage that I use for building boats and such on.
works great and does NOT act as a heat sink.
I use 60/40 solder and always tin the wires up before soldering them into the bullets.

Dana;

Please look at Kents entry in cell #18 please............... HINT, HINT<<<<<<<< :-)

[Jeepers]

theyre 5000 mah but i always end up putting like 5300 back into them. runtimes, say 4 to 5 minutes tops.

I would say your run times are a bit long for the capacity of your packs with the amount your putting back in you need upgrade to some higher mah packs.

your set up sounds aggressive with a 2200 kv motor and a 445, if you want the longer run times go to a m442. if you want the speed cut your run time down.

I run 4+ minutes in my offshore boat and the wires/connectors don't get hot on my T180 and I push my boats fairly hard, I also carry 6500mah packs.

[dana]

I have sized holes drilled into the table top in the garage that I use for building boats and such on.
works great and does NOT act as a heat sink.
I use 60/40 solder and always tin the wires up before soldering them into the bullets.

Dana;

Please look at Kents entry in cell #18 please............... HINT, HINT<<<<<<<< :-)

Cell#18? confused..... Can you post a link?

[keithbradley]

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.

[wparsons]

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

Ideally you shouldn't be putting more than ~4000mah back into a 5000mah pack to help keep the packs in good shape.

You could be building up more heat because the packs aren't giving smooth constant power that low into the discharge.

I would suggest running for about 2-3 minutes and see if the temps are better on the wires.