Can anyone help explain how Joseph Day’s designs for two-stroke petrol engines influenced Alfred Scott. I had understood that Scott was the originator of the design but have discovered through research that this might not have been the case.
What (if anything) can Scott be credited for as a designer or developer of the two-stroke engine?
It’s about using the piston to control the inlet timing of the fuel as apposed to controlling the inlet using a valve (rotary or read ) down in the crankcase and using crankcase compression and transfer ports
This reply was modified 3 years, 2 months ago by Barrie.
Really? I thought that it was Joseph Day that invented the valveless two-stroke engine although I read somewhere that it was one of Day’s employees (a Mr Cock I think) who came up with the idea of using the skirt of the piston to control the inlet port and hence do away with valves altogether.
If this is correct I can’t see that Alfred Scott designed anything new?
An engine design does not necessary have to use all your own ideas , he borrowed other people’s, the same as happens today,
I think Scott was the only one to use the bottom end layout , overhung 3 piece crank, flywheel in the centre.
Good question, well put , don’t know.
Scott was the first to use a kickstart, triangulated frame, probably Scott, also used as a design feature in air ships and later by Barnes Wallace and other geodetic structures. You mean telescopic forks, again Scott was the first I believe.
As far as I can remember Werner introduced springer forks in 1905 and Rex was using telescopic spring forks in 1906.
Joah Phelon claimed to have invented the kick-start before Scott but I don’t think that he sued Scott for it, like he did the 2 speed gear.
So perhaps it was only the triangulated frame then? However, I think Alexander Graham Bell developed the “spaceframe” for nautical engineering purposes prior to 1908. I can’t see that Scott’s frame was anything new in 1909.