It's a concept - you should learn how it works it's really not that complicated
all in all it is cool and with some improvment it would work very well, I do thing that going to a wider chamber will help
pluss it was spewing out some some fuel witch is a waste, I know some of my first engines did the same thing but once i built my later ones i put them tought alot of testing before i post them, i am not fully shure how much this was tested,
it would not start thr first 3 times then it would start after the 4th time, its not reliable, if you were to use this in space ( it would spew out to much radiation if used on earth) there is a chance that iw would not start.
It's a concept - you should learn how it works it's really not that complicated
all in all it is cool and with some improvment it would work very well, I do thing that going to a wider chamber will help