A standard Pitts S-1S uses a 76” diameter propeller - more than 1/3 rd the wing span - that turns up to 3250 RPM. With power on, it is a big gyroscope. One quickly learns that pulling hard requires plenty of left rudder to go straight, and when pushing hard, plenty of right rudder.Some interesting stuff to ponder when you consider your propellor as a spinning disc from about 15 minutes in.
Most of the packs I've worked on recently had spot welded tabs, I've made some CD spot welders in the past and lots of plans on the interwebsMy RC friend Mac skimming the pond in his Skyraider last Saturday in Williamston, GA (video - click picture to play it).
He keeps offering to give me dual instruction in the same plane.
My RC friend David's FPV RC airplane videos.
Waiting on a TS-100 soldering iron - I have $220 of 5000mah Li-ion 21700's in my refrigerator to solder up into 4s/6s battery packs for long range FPV. Never made them before. Can't wait to get my TX-16s and DJI FPV goggles. L-)