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The plan is for the bike to have three buttons on the left side. start/stop, map-up, map-down. On the right side we have only the throttle. Any idea how to engage reverse?

At first I saw that as 5' instead of of 5". There was a piece of junk on the screen. Reminded me of the Spinal Tap Stonehenge scene, but reversed. Sure you don't want 5 feet instead - would be a lot more spectacular.

In addition of putting on a large media event a bunch of other things need to be done. The factory needs to start running. This is not isolated from the development engineers. The behavior of the bike is in large part dependent on the software -- a lot of work remains especially with regard to...

The charger is rated 3.3kW _output_ power. I would expect low 90s efficiency so it works out to about 16A input which is the current rating for the common european plug.

The software is behind the hardware (because in this case you need the hardware to write the software). To really push the bike -- especially with the media riding it -- the software needs to be more mature. The last thing you want to do is change the software from day to day while the press are...

It is considerably more powerful than the Alta. A number of riders have ridden both bikes. If it was less than the Alta the media would rip it to shreds.

There is a fan. It is an actual radiator fan designed to be exposed to the elements -- not some computer fan. The electronics measures fan current draw and warns you if there is some problem with the fan. During charging the coolant pump and fan is controlled to bring the coolant temperature and...

First, let me state this. Alta is the first legit electric dirt bike. Second, the "IP" that BRP acquired is just about completely without value. This is not because Harley holds some blocking methods by which they can screw BRP. Where are the design and R&D engineers? The pieces of paper and...

They are not stupid questions. I do not have an Alta so I cannot check. Perhaps the bike spits data out on CAN regardless if multitool is connected or not. If somebody connects a CAN dongle to it and there is a bunch of traffic on the bus then the bike is probably spitting out the data and...

I have played around with a non-rooted phone running Termux. I got it to use a USB serial device (normally /dev/ttyACM0) under linux, but it didn't show up as such device. I hade to use libusb to get it to work. Also, it doesn't work on every phone. IMO, that route is painful. It is much easier...

Is there some sort of published protocol or does it need to be reverse engineered? It would be much easier to just pipe CAN to WiFi or bluetooth and do the processing on the phone.

ESP32 would do the job nicely. Could be a neat project for someone who has the time to do it.

The data port is CAN or something else? Can you pick up 12V or 5V from the same connector?

I think the motor to counter shaft gear ratio is 3.53 The speedometer assumes default sprocket count and tire size, so you can calculate the relationship between the shown speed and the motor RPM.

This is all from memory so I may be 500 to 1000 rpm off. At about 7000 rpm the voltage generated by the motor equals the battery voltage. To go above 7000 rpm the inverter starts to weaken the field (caused by the magnets on the rotor). At about 13k rpm 70 amps RMS is required just for field...

About those 20 pounds. I guess in Swedish that would be the fet varg. In all seriousness what is being done doesn't have any real effect on the mass. The prototypes are not highly tuned machines made with unobtanium and expensium that will then be switched to cheap metals for production. The...

It is not quite so simple. Let me try and explain. The first two bikes are hand built prototypes -- including hand built electronics, wiring, etc. Things that are designed initially to be hand built are not conducive for mass production. So we have bikes which are in a sense evolving -- they...

As I said, the DC/DC is not in the battery. We are not using the inverter to charge. Several things are done differently than in the Alta. The solution is simple and elegant; it is easy to package. Take a pencil and a piece of paper a play with a schematic if you like; you will likely figure out...

You might be able to get it down to a little over 5 minutes. I helped in a swap a few times (on prototype bikes) but we didn't time it. Some of the plastics had to be removed to reach the connectors, etc. We were careful when screwing the plastics back on because we didn't want to cross thread...

Call it what you want. A tool or simple jig; something to aid in battery swap. So, was it designed to be quick swapped? No - that was made abundantly clear. However, if you want to swap anyways, you can make a tool (simple jig) to make that easier. Nowhere did I claim "ideal".