Stuart high speed engines part 1

This is a pile of stuart enclosed crank high speed engines. Made either just before or just after the 1st war. To the right of the three MTB1b engines is a sadly chopped up Star, which was the replacement for the aluminium MTB1a. It came out in the mid thirties and disappeared around WW2.

This big green meanie is the MTB3, its over 8 inches long and 4 wide. Weighs about 5.5 pounds and will drive a 150 watt dynamo. Replaced by the stuart Sirius, i think this one may well be one of the most attractive stuart engines.

1 inch 'square' engine

I call this engine my Square engine because its 1 inch bore and stroke and because its.... Square. Its dated 1952 on one side.

Its a flash steam hydroplane engine, with a piston valve for inlet and again a uniflow exhaust. Its also ballraced, and has a fully adjustable eccentric driving the inlet valve. I intend to have this engine in a boat and racing in the A/S class for the 2015 season.

Bassett Lowke Uniflow poppet valve engine

It is beautifully made, and relies on a crankshaft driven cam to actuate the inlet poppet valve. Its another uniflow design. The cam has slipped on the shaft so it currently doesnt run. I need to work out how to adjust the timing, the cam is hidden between two ballraces in the main casting.

It dates from around the early fifties. Heres an ad i found in a 1952 edition of ME–

Be seeing you
Sp.

3 cylinder valveless engine

This is my favourite engine. Its big, and wierd, and sounds like a spitfire when its running. I have no idea who made it, it is unsigned.

It has three cylinders of 1 inch bore and stroke and a grand total of 12 moving parts, and roughly two dozen parts to the engine as a whole. It works by covering and uncovering ports in the spigots at the tops of the cylinder heads. Its also a uniflow design. It is brutally powerful, and did i mention it sounds like a spitfire?