Calcifer The battery voltage has nothing to do with what the servos get... the esc provides metered voltages to components. Usually the escs have tags on the wires to show voltage outputs. So, yes, fine for WPL toys

Calcifer You don't need to glue them on a brushed machine. When I made one of my HSP's brushless, on the first run, 2 of these tires came off and I could only watch where one tire went, I lost the other one. I recommend glue them anyway... stops them twisting on the rim.

Calcifer No, the brushes are a dead give away... as is the 2 wires as stated in the specs for the XK A800. If the XK A800 had a brushless motor and stronger wings, it would be perfect.

Calcifer It comes with what is said in the ad. If it had the silenced board in it, it would be written in the ad and be about $80 more expensive. I have two stock ender 3 pros with the old board and they print fine and are not excessively noisy. I bought a silenced board for each machine but have not bothered fitting them yet, I have not found the need. Both machines are in my bedroom and I sleep fine with both running.

Calcifer The ender 3 pro has pulleys that can be adjusted to tension the belts. I have two ender 3 pros and I bought alot of upgrades, however, the only upgrades I have fitted yet are the yellow springs under the bed, the metal extruder drive on the extruder motor and the blue bowden tube and better fittings... the rest of the upgrades, which include silenced boards, smoothers, fans etc etc are just in a drawer for if I ever feel like fitting them. The ender 3 pro prints very well straight out of the box. I bought a bunch of nozzles from 0.2 - 1.0 and plenty of 0.4 nozzles... I have used 0.3 and 0.5 and find them handy. I am sure you will like the ender 3 pro.

Calcifer I got my Ender 3 Pros from BG Australia so they came with AU plugs... they are a standard PC cable, I didn't use my ender 3 cables, they were too short at only 1m or so, I just used longer desktop cables I had already. If you haven't got any PC desktop cables, measure how far your E3 will be from a power point and buy a cable the correct length to suit.

Calcifer The main wings are the only parts unable to buy as spares, not to mention, they would never survive undamaged in transit. The only way to get spare wings is to buy another plane for parts. The main wings are very prone to damage as they are unsupported. They crack from the aileron cut out to the rear of the wing root, so strengthening this are with tape prior to the first flight (top and bottom) can help stop this happening. It is a shame these can not be bought BNF.