ElectricMotorcycleForum.com

You're making a couple of naive errors that many new solar converts make. First, your "345W" solar panels will never deliver that. They may approach "rated" voltage unloaded; "rated" current into a short circuit; together, never. That's just how they rate them. You'll be doing well to deliver 250 actual watts on a good day in direct summer sunshine, or around 500 watts (0.5kw) between the two.

Your primary mistake, however, is conflating kwh and kw. A battery's capacity is rated in kwh, power is rated in kw. You're saying you want to charge a 13kwh battery (your bike) from your buddy's 2.4kwh battery. Do you see the problem with this? You could gain a partial charge, but only very partial. The solar array's ~0.500kw will help, of course, but only slowly.

Sure, you could do it, but only over the course of many hours and/or several days.

Well...

...Not really, since you're only producing <0.7KWh per hour the sun is up.

Maybe if the batteries were fully charged, and you plugged in while the panels were in full sun, you could charge using the default charger.

But you'll want an inverter with a capacity 50% more than the wattage of the bike's charger.  The peak power an inverter can produce is different than the throughput power it can produce for the hours needed to charge the bike.  The electronics will heat up and become less efficient at what they do and need to shed that heat somehow.

That's not to say there might not be a way to trickle-charge the battery.  I dunno.

-Crissa

You shouldn't have to dismantle the caliper.  In fact don't do it!  You can remove the caliper by removing the two bolts that hold it to the fork. Then you take your hands and press the caliper and its pads against the brake disc, back and forth to spread the pads and force them back into the caliper. That will give you enough space to tilt the caliper to the outside and pass the wheel rim.  You can place some tape on the wheel rim to keep from scratching it while doing this. Be sure not to touch the brake lever while the caliper is off the fork. Reverse the process to install the caliper on the fork, then after the mounting bolts are replaced and torqued to the specified NM, squeeze the brake lever gently a couple of times to re-seat the pads against the disc and you are finished.