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It'll be interesting to see electric 2WD evolve - if it's done right I imagine it'll eventually just dominate Endurocross, hillclimbing, etc. (as opposed to the clunky Christini system). I've seen so many instances in the rock / wood sections where the front wheel wedges itself down, 2WD would...

So replacing the battery didn't help?

Nowadays, absolutely - AFAIK Alta and Tacita are the only ones currently mass-producing electric MX bikes, which Zero hasn't made for years. From 2007-2013, the story was quite different; Zero was the sole worldwide producer of electric MX bikes, apart from a small number of Quantyas (by any...

Every MX bike is marketed for motocross and racing, but few are actually used that way (and re actual competition, is there even an AMA electric class?). And even if Alta revised their OEM suspension to please some racers - the best that could be hoped for - an outdoor-MX type setup (which...

I could be wrong, but I'd be surprised if even 25% of Alta (or Big 5 MX-bike) owners mainly used their bikes on closed-circuit tracks. Maybe Alta figures the racing / big-air guys will set their bike up for that themselves, as they probably did for every other new bike they got. Ray

If the generator's 240V neutral is being used as the "safety ground" (yikes!) or the SG in the generator output is just a wire connected to the generator chassis, this is to be expected. Wikipedia: "A ground fault (earth fault) is any failure that allows unintended connection of power circuit...

I didn't think of that at all - maybe it's gear click, each time the magnets pull on the stator ? Ray

Same here, Oded - I think it might be several things: 1) the Alta motor spins nearly 3X as fast as a stock Zero FX motor per unit distance 2) the 14K rpm Alta motor is surely made to tighter specs than the 6K Zero motor, so the magnets may be closer to the stator 3) the magnets may also be more...

That's pretty impressive. Ray

Just a guess, but maybe there's a 9V backup battery for the display and/or controller, like a computer's BIOS battery? Ray

Agreed - just metal & insulation ! Designing & building a safe, reliable, cool-running, reasonably-priced 5kW unit is not simple though, which is why quality ones cost so much. Me neither - they scare me because of all the Chinese-made power supplies I've opened up to find glop-coated...

I understand completely. I've looked for 120V/240V brand-name enclosed 5kVA step-up transformers, but all I find online are either cheap eBay 'voltage converter' black boxes that I'd never recommend unless I'd bought, thoroughly checked out, & used one hard for a while, or $$ commercial-grade...

Yes - but Onans are pretty high-end generators, are you sure there's no 240V tap on the output connection terminal strip? You might get lucky and only have to change a jumper or two, and maybe the charger plug. Ray

I'd have to check the charger schematic to be certain, but if the alternator's DC voltage output was high enough it could probably be input to the CC/CV charging circuitry instead of the charger's built-in DC supply output. Just FWIW, I wouldn't recommend doing this. Ray

Right now the only inverter I own is a Sola 4kW online UPS (four 12V lead-acid batteries) for my computers, but I've owned several over the years & in my job I've worked on much larger ones (100kW) so the concept is familiar. A high-voltage, high-power inverter setup is one of the most...

I really hope it works out - just seems so ideal. Ray

After a quick read-over, it appears this setup should fully power either standard or fast Alta chargers (it's 5kW at 50Hz, so figure 4kW+ at the reduced duty cycle; it may be available in 60Hz too, idk). Yes, it's probably expensive, may be difficult to install, inverter unit bulky, etc. - but...

My Zero has headlights (running lights only) and a speedo/dash unit, nothing else. I've ordered an EX headlight unit for the MXR (non-functional, just for show). I've only been to Thomaston with a street-plated ICE bike, the guy there was only interested in the plate (the dam is Army Corps of...

AFAIK, CT still considers e-bikes scooters, and doesn't require registration. I've been pulled over twice and also talked to several curious cops, and haven't had any issues. As soon as the CT DMV thinks they're losing tax revenue, this will change. :( Here's some CT DMV info from dmv.org...

I'd say yes, definitely. Here's two excerpts from the Alta manual: Page 10, #1: Turn the key clockwise to the ON position... You may also hear the coolant pump power up and begin to circulate coolant through the frame. Page 75, #7: Turn the key to the ON position to activate the coolant pump...