This guy is a 6x1 scooter wheel, but I left the thing open for a bit more tire if i needed. with the wings folded, the tailwheel weight is actually pretty high, so I may go to a 6x2 wheel back thereKitchen chop boards are a good source of HDPE and they come in other colours. There's also some plumbing pipe. The black underground supply stuff is PE but rather thin in the US. The crimp fitting PEX stuff may be worth trying. it's crosslinked so you can't heat form it, though.
I'm considering one of those scooter wheels for my 103. The 8x2 ones are a bit heavy for my liking, so I'll likely go for the 6x2, unless I need tail ballast...
I agree. I know it will fly, no question there. The factory polini motor is 38hp claimed (usually meaning cold day sea level downhill with tailwind) this is a legit 45hp at any altitude, any temperature and any battery SOC over 10%. Time to overheat power reduction is just at 3 mins on an 80 degree day, where it drops to 80% power where temperature stabilizes.Farfle, when is the first test flight scheduled?
Trust me, for right now FORGET about all the minimum sink, electrical and mechanical efficiency, how many amperes it takes to accelerate a propeller to any given RPM, what the gravitational force does to mouse turds as they fall from the mouse, etc. All that crap is getting in the way of what you NEED to be thinking about.
If you hook up your aircraft to a spring scale, run up the motor to full power, and it pulls 150 pounds or more on the fish scale, you are DONE with the scientific testing for the moment, because the airplane should have enough thrust to fly, and then you can take off the nerd hat and put on the test pilot hat.
The test pilot hat is the ONLY one that will be worn for the first two hours of flight test. No nerd hats allowed once the door closes and you move the throttle forward. If the motor is making enough thrust to get the airplane off the ground and climb, without overheating the components (battery, controller, motor) then that is all you need to know about the power system for the first couple of hours.
You need to be thinking about stability and control of the airframe, control response, handling qualities, stall recovery, takeoff and landing characteristics, groundloop tendency. You need to be listening for where the gremlins are playing around in your airframe. With an electric motor you will be able to hear the little bastards much better too. What makes clunking or banging noises? What feels like it's vibrating or stretching. Do the controls get more friction when the airplane is in flight, and can you feel the control pushrods scraping on something when there are air loads on them?
That is the stuff you really need to be concerned about once you know you have enough thrust to fly.