if it is the original windings (stranded wire, not a single solid one) a hot soldering iron might be the better choice so you don’t accidentally cut a wire or miss one.
220 grit wet/dry sandpaper might work pretty good too. Don’t get regular cheap sandpaper because it sheds like a mangy alley cat. Beats the hell out of scraping. Heat seems like the only other practical solution that has already been mentioned. With heat it may be difficult at times to control how much you burn off. Be careful!
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if none of that works you might try sacrificing a neighbor’s pet to our Dark Lord Skatan. Sometimes the powers of darkness are required in situations where mere mortals fall short.
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So I ended up scrapping off the the insulation with a razor blade, and that seemed to do the trick. Not the nicest solder job, but it’s not going anywhere, even when pulled hard.
sand it down
did the mod as well and very happy with it. had my doubts about the soldering connection … was really hard to get the coating off. but the connection is strong and the resistance through all phases is equally low.
added really thick shrink tube with glue inside that i sticked in really far into the motor. that stuff becomes really stiff once its cold and the glue additionally suppresses any movement.
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Silicon wire, hall sensors & terminated from delta to wye ‘‘mod’’ for my actual hub motors. Works like a charm but have a second one to do… sanding off the isulation from the motor wires sucks.
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nice job looks very clean, I did the same solder joints as you, they are still holding up strong! [quote=“whitepony, post:40, topic:3061, full:true”] did the mod as well and very happy with it. had my doubts about the soldering connection … was really hard to get the coating off. but the connection is strong and the resistance through all phases is equally low.
added really thick shrink tube with glue inside that i sticked in really far into the motor. that stuff becomes really stiff once its cold and the glue additionally suppresses any movement.
[/quote]
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I sanded off the insulation but how did you check the resistance after? I just want to make sure I took most of it off.
I measured the phase wire resistance before and after the mod. probably doesnt mean much though. good test is probably to send a lot of current through the joint and check if it heats up more than the rest of the wires.
just did this exact mod a couple weeks ago on the AT build i just finished up:
I used heat shrink on the individual leads and then grouped them together with a wider piece as well.
These were probably the easiest motors to do this to so far.
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Is it better to use 10 awg or 12 on sk3?
12 gauge is perfect. 10 might not be at easy. The cables get really close together.
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agreed. 12 is ideal. I’ve used 10 before but its harder to match up the shrink tube. The beefier leads definitely add a muscular look though.
Are you using 12 gauge from batt to esc too?
I use 10 AWG. It has a higher current rating for obvious reasons… I’m future builds I will switch to 8 gauge though.
Here’s a chart.
http://www.westmarine.com/WestAdvisor/Marine-Wire-Size-And-Ampacity
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Dont think that chart in entirely true. Looks like minimum run of cable is 10 feet we are looking at about 1 foot max. Maybe im reading it wrong but check out this site. http://www.solar-wind.co.uk/cable-sizing-DC-cables.html
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