fizzit wrote:This is what my bike looks like right now. It is hanging from the ceiling, I'm not really sure why.
fizzit wrote:Well alright, I shall move them. But I have one question. Is around 1.5" on the negative lead and .5" distance to the caps on the positive lead too long? That way I can put the caps next to the controller and not have to redesign the enclosure.
dequinox wrote:Just out of curiosity what do the caps do for the ESC?
fizzit wrote:I just received 5 of these caps:
http://www.mouser.com/ProductDetail/Pan ... KoOw%3d%3d
Should give me a cool 15 amps of ripple current handling
I'm expecting a small mushroom cloud whenever I hook the controller up, at least until I get together a no-spark circuit
Oh and I found a nice extruded aluminum hard drive enclosure that I think i'll be using for the controller/electronics enclosure. It even has a fan on the bottom. I'll post pictures once I've hacked it some more
I don't suggest the "no spark" resistor for the MMM -- for a few reasons. First, the resistors that are suggested are WAY too big. They can cause the beeps (during startup) to cause a boost (with the motor inductance) that creates voltage spikes -- without the battery there to absorb them. -- So if you plug in through the resistor, the caps charge fully, then the ESC beeps the motor -- can cause enough of a "boost" spike to damage some of the more voltage sensitive parts.
Even just the brake turning on (which happens on power-up for safety reasons) can also cause a "boost" spike --
So to be safe, just say no to the resistor. :no:
Really, it's easy on the caps to charge fast -- they don't mind at all. :yes: It is hard on the connectors -- but connectors are cheap compared to ESCs...
fizzit wrote:A couple of things:
-If you are wondering why your 140w soldering gun is not comparing to 80w soldering irons and all your solder joints suck, take the tip out and scrape some of the corrosion off
-It seems like everyone uses case-hardened shafts for their jackshafts... am I making a humongous n00b mistake by using a non-hardened shaft?