Tomorrow we’re going to press in the driveshaft and crankshaft to the flywheels. It’s a tense moment as we’ll need to get them parallel and work quickly.

The shafts are in the freezer next to the peas, down to -16°C. The flywheels will go in the oven up to 230°C, taking the 5 thou’ heavy interference fit down to around 1. 9 tonnes of force to press the shafts in down to 600kg. (Well fingers crossed!).

Assuming they go in ok, the plan is to run a short weld around in three places. This is a belt and brace approach but at least the shafts will be in for good! In preparation I’ve bored some scrap steel and bar, so I can have a practice weld in them. Here goes…..