90º V twin/V8 section MDF model demonstration. Not a firing order video (breaks but doesn't explode)

I made the model from the last video more robust by making the "cylinder walls" higher and screwing strips of lexan/polycarbonate/plexiglass/plastic/whatever over the top to hold the "pistons" down.The stopwatch was to time how long this lasted but the drive dowel broke after not very long. Managed to get it over 900 RPM for a fair while though.

I also did a rough balancing job on the crankshaft by gluing two large washers to the bottom of it (the round MDF pieces in the washer holes were there to hold them on better, the other bits were already there to space the counterweight to where it needed to be)

I used the same lav mics I use in my firing order videos for a bit more interesting sound than the camera mic would pick up. Filmed in 50FPS, hence the lower resolution.

Not sure what was knocking, probably everything.

Видео 90º V twin/V8 section MDF model demonstration. Not a firing order video (breaks but doesn't explode) канала William Moser