countersinking tool

Countersink Extension

June 16, 2019 Nigel 0

The poppet valve crankcase has been bugging me and I wanted to fix the brackets from inside the crankcase with countersunk caphead bolts. There just wasn’t room or the right angle to get a bit [more…]

crankshaft

Crankshaft – Poppet Valve Single

June 2, 2019 Nigel 0

The crankshaft for the poppet valve single cylinder engine has been machined from mild steel and includes timing gear machined directly on the shaft.  This started with a piece of hexagonal mild steel, why hexagonal? [more…]