Well, Frist some history about me. Just so you can see that i am serious about this. I started my pulse jet career with a small valvless enging that did work but only make some big noice. After that one i manage with some help to build a valved engine that produced about 5kg of thrust, both where powered by LPG.
And now I have some big ides and the money needed
A 200lb (thrust) valved Pj engine
with reedvalve. This will power a "trike" that is covered with fiberglas cowling. With this vehicle I am planing on challenge (just fore fun) Erik and his teem next year on the frozen lake.
I am going to feed this beast with metanol or atleast that is what i am hoping fore. Car pertole maybe a better choise after the engine is funning fine.
This is going through two fuelinjectors from a old steam boiler ( I am restoring these for a living so i can choose diferent ones going by what you have to say)
But I need the experts word about somethings.
My numbers are
exhaust tube length:48,75" and 7,8" wide
"Comebustionchamber" length:16,25" and 9,84" wide
And here comes the first question.
My calculations shows that i need a aeria of 24squair inches and that i need to make the valveholes 34,3 squair inches, is this right? I am going by that the reedvalves are leting 70% of the air through.
Now to the second question.
Can i have a reedvalve thai is 6cm long and 2cm wide or do i need to split the so that i will have two rows (one on top of the other) that is 3x2cm.
Is it better to have short valves? I am a bit afraid that the long ones will take to long to shut resulting in "flopp".
What aluminum aloy whould be best fore the valveseet?
I am just guesing now but whould a fuel flow of 6L/min be somewhat accurate fuelconsumption