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I would be curious to know if an Alta's motor with a housing, a reduction gear, a battery, inverter and controller, etc. is a lot heavier than a 450cc 4-stroke motor, a gearbox, exhaust, and a full 2-gallon gas tank.

Ok, so 115kg is 253 lbs. Is the HP 50hp like on the MXR or 40hp like on the MX. Are zero motors never water cooled? Just trying to access here whether Alta has achieved any extraordinary on-paper performance specifications, or whether it can be replicated by anyone with a garage and a welder.

The rear Alta wheels are exactly the same as KTM's. The front Alta wheels have hubs that are wider by 7mm on each side. KTM wheels will fit too, just with 7mm axle spacers and 7mm caliper spacers.

WHAT??! I was late to call Warp 9 by a few minutes today, they just closed. Need to find out what exactly BRP told them.

+1 ! I am very curious to know what power/weight numbers were you able to achieve on this DIY build, once you have your 5.3 kWh battery.

Ebay -- Alta Redshift

www.altamotors.co is down... then back up

A Hall Effect sensor produces a digital frequency signal, not an analog voltage (or is it not the case with slow moving magnets??). It is probably much less noisy too, which is a very good thing if you have 50hp.

LHFF -- Left Hand Fast Throttle !!!

Beautiful bike. Looks like you value it more than the current depressed marketplace does. If this is the case, then keep it!

If you call Elite Motorsports and they say they do not have them anymore, you can either make one yourself or ask someone to make one for you. Here are the instructions: 240v female to 110v male adapter

Steve, you should edit the poll to add an option for those who want a new and improved battery. I would buy a battery only if it was better (lighter, or had a bigger capacity, or was cooled and could give me 60+ hp!).

Judging by the rear sprocket, it looks like there is no gearbox, and so the motor is relatively low-RPM, just like on the Zero. Am I guessing it right? Or is this the Zero's motor?

More interesting stuff about Tiveni from https://www.linkedin.com/company/tiveni About us Helping to drive down costs for the EV and energy storage industries by developing and licensing designs for fire-safe, standardized, slide-in/out replaceable, energy-dense, low cost, high volume...

Yes, please! Are they still in business? How much do these bikes cost? Why, with all this carbon fiber, are they heavier than the Altas? Are the controller and the battery not cooled? How do they handle? Are they as precise and flickable as the Alta?

Hey, that was my idea! Install 2-3 piggyback controllers between all bike's components and we won't need to worry about the original firmware. :D

Nerds/geeks are supposedly honorary titles in the modern tech world.

Apparently the Lithium batteries self-discharge at less than 1% per month. Freezing the pack slows this down further. It you throw a 70% pack in a deep freezer if may last 10 years. Or it might last for 10 years even without a deep freezer. I would check and charge this battery once a year...

Yes, you'd have to use your own inverter, motor controller and firmware. The geeks on this forum are itching to lay their hands on some open-source firmware.

Do it. I would buy a 2 kWh add-on to ride to work. Not sure how it would work though without having to run 85 wires to the main battery, or without hacking the firmware.