Saving Old Seagulls

I have now tested it on the water, there is no change in top speed... same speed that I achieved with this engine when running on petrol pre mix. Ah well.

Moving from Petrol to 80% Ethanol: Does it Increase Power Output?

A fair question. Alcohol fuels have long been used in motorsport, so yes — they are inherently capable of producing more horsepower for a given displacement.

The extra power comes from two main factors:

Cooler intake temperatures ...

... in the meantime...

I’ve just completed a project: converting a smoky, smelly Century 100 into a clean-running, alcohol-fuelled “vaping” Century 100.

The issues I wanted to tackle:
Petrol smell in the car when transporting or storing the engine

Two-stroke smoke on the water while the engine is ...