As a person who grew up and lives in a cycling culture... if your pedals prevent you from (mostly) extending your legs it means the bike is to small/tiny for you. The Saddle extension is not supposed to be the fix for this. Just get yourself a bigger bike. The storage solution is GREAT!!! Made something similar from wood this is as amazing!
I have an Arial Rider Kepler. Love it. I used tinker cad to model up a couple of spacers for water bottle cages and 3d printed them. I also 3d printed a thumb adapter for the throttle on my Neptune 2S.
Neat helmet mount idea. I went with 3M command strip cable/hose loop. The loop fits through a ventilation hole in the helmet and slots into place in the wall portion.
I know this isn’t the video you did the action figures but I had an idea. Have you tried mixing in a small amount of flexible rubber like 3D resin to make the joints more durable and easier to pop into place?
Not really that fast... I have one that the speedometer maxes out at 99 kph (61 mph) and I can feel it surging forward after that. I have to get my gps app out and see where it tops out at. The one i have is a dual wheel drive bike, and I am 6'2 200 lbs and it hops forward when I put the hammer down lol