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Judaslefourbe posted this at the EMF Alta forum a while back: "One thing you need to consider with EVs is the motor efficiency also. The Redshift sweet spot is between 6,000 and 8,000 RPM."

Sure! At least it's cool that the Alta charger works on 208V - an older design might not.

Yes, but you'd need access to the 3-phase supply and a transformer to do it. You could use an autotransformer with the existing 208 to step it up to 240, but that's just another clunky and expensive solution. Maybe the track guy is unaware of the 208V situation and has regular split-phase 240...

It's probably 208VAC derived from a 3-phase 240VAC supply, which is fairly common in US non-residential 240V applications.

I think this is industry-standard for an MX race bike. I doubt any of the major ICE mfrs would replace a broken chain slider under warranty, though the dealer might do it out-of-pocket to keep you as a customer. Just my $02.

I agree 100% ! - but it was real hard for me to watch my swingarm & motor mounts get irreversibly chewed due to poor OEM design, knowing I could fix it immediately myself. It's still amazing to me that after only two model years Alta has more aftermarket support for dirt-type items than Zero...

If it were my bike I'd take off the black plastic mud guard / shock protector, and if there's a chamber in the upper subframe plastic (which I think may be inside that V-shaped area below the front tip of the black 'Future of Fast' graphic), I'd drill one small hole into the rear of it from the...

If your current slider is still mostly intact, a 9.50"/240mm x 1.50"/38mm x .125"/3mm steel strip JB Welded to the top of the lower slider section & drilled for the rear mtg screw should beef it up quite a bit. The raised ring around the screw hole would have to be cut off flush first, then the...

It can if the waveform shapes are different. AC utility power is often a slightly distorted sine wave, but generators & inverters can put out all sorts of 'modified sine' waves, some of which resemble stepped square waves. A 240VAC sine wave = 240V RMS, but a pure square wave can supply over...

I think so too, but I just searched 'heat' in the Alta manual and couldn't find anything specific about temperature monitoring. The Zeros use separate thermistors for each battery / motor stator / ambient, some of which can be accessed separately using the Zero app. Sometimes these can be off...

Hopefully Alta uses higher-temp rotor magnets than Zero. Both my Zeros were never the same after single first-level (no power limiting, only blinking temp light) hi-temp events, with reduced max torque at WOT from that point on. This was later corroborated by several other Zero owners after...

If you clean everything well and then JB Weld them in place, they'll be good to go. I've done this with plastic gas tank inserts, worked great.

I just tried mine - the 6.5 front seems to be tapered, and only goes on my spokes one way (wrench head hooks to the right) and is real tight; some of the front nipples look slightly deformed. The 6.8 rear goes on the rear nipples either way, easily.

When posting on Internet forums I try to always suggest things I know will work, especially when lethal voltages are involved.

These two Honda EU22i generators in parallel should put out 20A at 220V, about 4A more than the quick charger draws. One cool thing about inverter output is that the AC waveforms can be easily synched if the generators are identical.

Yes, could be - the Alta has so much torque available all the time, it might be happening more strongly & more often. Under acceleration my Zero does the teeter-totter thing to extremes, and if I set the shock rebound to compensate for what I call 'wheel hammer', the rear tire's spending most...

Just FWIW... if I gear up my Alta to 3.78:1 (14/53), I'll try 13/49 or 12/45 sprockets instead. After trying to live with huge (65 - 71T) rear sprockets on my direct-drive Zero, I found the anti-squat effect from large-diameter sprockets to be very real, and (IMO) NG for most dirt riding /...

My garage varies from 50F to 75F. In the winter I heat my Zero battery to 80F if possible, it makes a real difference in both performance and range. I think internal overheating during hard use is the real enemy, but Alta seems to have that covered.

Excellent - thanks !

Once you saw the app logon procedure (partial VIN required, kill switch off, kickstand down, etc.), you'd worry no more. :) A dealer would use a cable/laptop, unavailable to end users.