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Messages - mpipes

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1
General Discussion / Re: Fuses and Busses
« on: October 29, 2009, 08:49:20 AM »
Do a search for ANL style fuses, these have a flat shape, available to 300Amps and above, not too horribly expensive. It's easy enough to make a bus bar out of solid stock and tap holes for set screws.

Go to mcmaster.com - they have every fuse style including Maxi up to 80 amps but their 6 fuse block and 12 fuse block are limited to 30A per fuse.

2
Tech Help / Re: EV Motorcycle Help
« on: October 23, 2009, 08:46:25 AM »
You can also try car stereo shops, they usually have wire for carrying  massive currents, along with nicely made connectors for them.. although this stuff is generally beautifully machined, overbuilt and way more aesthetic than you'd need (gold plated everything) along with a higher price. I have 1/0 gauge power for audio in my ICE powered truck! :)

3
Electric Motorcycle News / Re: BMW C1-E Electric Enclosed Scooter
« on: October 15, 2009, 05:41:42 AM »
Anyone else think being strapped into a 2 wheel vehicle is a major safety issue?

Sure, you're not gonna pop off of it unexpectedly but that one time when you *need* to ditch the bike and bail off, you can't.

4
Zero Motorcycles Forum | 2012 and older / Re: Zero: 455 mpg
« on: October 10, 2009, 04:02:04 AM »
Quote from: skadamo on October 09, 2009, 11:49:18 PM
No one has developed a better way to communicate cost savings the way MPG communicates gas milage that I know of.

Dollar (or cents) per mile - the true cost of the fuel required for transportation, regardless of the type or volume of fuel. :)

5
Tech Help / Re: AC versus DC Motors
« on: September 24, 2009, 02:58:04 AM »
Thanks for the info Travis.

Well, saving $1500 on a motor/controller means a battery/BMS upgrade :)

6
Tech Help / Re: AC versus DC Motors
« on: September 23, 2009, 02:51:10 AM »
Travis,

Have you ever seen any issues with DC controllers flaking out? After reading on metric mind about what happens in a DC controller when it fails, it seems AC would be a safer bet for people building commuters and driving in traffic.

On the other hand, I'm also sure the reputable controller makers have a pretty low failure rate to the point it may not be much of an issue anyway.

I'm planning out a project right now and actually have budgeted for an AC system, but am also wondering if there really is much advantage over DC for a project like mine - ~300lb vehicle, 230lb rider, 45MPH cruising speed, somewhat hilly terrain (45MPH climbs in the 1-2 minute range, nice downhills for coasting).
As far as safety, I have thought about wiring a switch into the brake that would open the motor contactor whenever sitting in traffic or at lights/stop signs, along with an LED indicator that would warn me of a fail condition before I let loose of the brake lever. Am I being paranoid? :)

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