aside from the sound factor, lube or no lube, i will expect in the first 5km, there will be a small pebble stuck at the gear and made u superman
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We have been running open gear drives for years.
98% efficient no issue in gravel or dirt trails
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When flashing firmware through the swd pins, can you flash from a vesc based on HW 4.xx to a vesc 6.xx or will this cause issues?
yes, no
should be fine
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What makes a bigger difference in better stability:
Lower center of gravity/lower deck or
Less angled trucks (50 down to 35, for example) or a split truck setup?
Truck angle, definitely. I have built absolute monster trucks that were both stable and turny all the way up to 35mph. 60° front 30° rear, squishy bushings front, firm in the rear.
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greased for at least some people.
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Motor ratings get stated in watts. how does one know the limits of volts or amps they can take?
can a 4.5kw motor take:
- 1A at 4.5kv
- 4.5kA at 1v
- 89A at 12s.
- 107A at 10s
- 59A at 18s
surely there are independent amp and rpm/volt limits on the motor… how does one know these?
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For my standards - no.
I personally would redo those connections.
Did you use flux and enough heat? Doesn’t look like the wire took the solder in properly.
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Yes
Tonnes of flux and solder
I am awful at soldering so for my standards they seem ok
I don’t do much off-road so pretty smooth surfaces and little vibrations
Would I get away with them
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Probably? They’re not pretty but look solid…?
Actually on second glance they don’t look to be hot enough… need bigger iron or more heat.
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the middle wire looks like a cold joint…that will end badly
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350c
They got really hot and lots of flux
They are really strong but super ugly
As @rosco said: Probably.
I bought a second hand ESC and the wire looked like this. He had been using the esc for a while now.
So yours have a good chance of holding 
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That looks even worse then mine
Doubt if I solder again they would get any better so I think I will take my chances
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holy crap, that’s scary af 
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Now that is skanky 
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What you could try is to reheat them for the solder to properly flow.
How flexi are they? Do they crunch?
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i know, right? 
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