- Mar 29, 2014
what is everyone using for high amperage setups? i keep desoldering 8mm bullets on 4s lol.
I follow almost the same method that hydro junkie posted. and its 8mm bullets in a P-sport hydro. Now don't get me wrong im pulling a **** ton of amps. I have a very high amperage combo in the boat. So maybe it was just a bad connection. but i was curious if anyone were using some sort of special high temp solder or is everyone just using like 60/40 or 97/3 or one of the other commonly found stuff.First question, what do your solder joints look like after you are done. They should be smooth and shinny. If not, then there is not enough heat and flux being used. Second, what size bullets are you using? Some are having trouble with 5.5. Move up to 6 or 6.5.
Hi Don,Here is what I have been using for connectors since I started rewinding. On most motors the rewinding does not
increase the power, but rather it allows you to prop up some and not burn it up, which gets the motor closer to it's horsepower peak, which typically occurs at 50% of it's UNLOADED max RPM. This produces a lot more heat in the whole system and especially in the connectors.
After switching to this solder, and finally learning how to use it. I don't de-solder connectors anymore.
You'll have to use a butane torch with this stuff because of the 580* melting point, and tin everything it touches with regular 60/40 because it DOES NOT FLOW!
Most all alloys have lower melting points than the pure elements they are made of.Interesting. I looked up melting points of metals and here is what I found.
Lead - 621 F
Tin - 449 F
Silver - 1761 F
From Mcmasters specs.
Dons solder is 1% Tin 97.5% Lead and 1.5% Silver = 580 F
60% Tin 40% Lead = 375 F
Lead free electrical 96.5% Tin, 3% Silver, .5% copper = 420 F
Draw your own conclusions. How does 60/40 have a lower melting point than Tin or Lead. Chemical engineers speak up.
It really depends on the flux. Acid flux needs to be cleaned off(isopropyl alcohol works well, it's also what we use at work to remove flux residue so I can verify to that being the case) or it can corrode the joint anywhere it's left, or so I was told in soldering class at NAS Whidbey Island back in January 1983. On the other hand, the rosin in rosin cored solder is supposed to be safe to leave since its not nearly as acidic as the acid in acid flux. With that said, I've never left flux on a joint so I can't say from personal experience whether any of the above is true or notReading further rosin residue vs acid residue.? Opinions on how it affects joints.