I tried to do the math, but I am not proficient with this subject although I looked at the formulas and understand how to calculate. However, I do not have the data needed to do the calculations. That's why I am asking.
As I mentioned earlier, I need to know this to figure out whether it makes sense to pursue some ideas I have, but this is not for LSR or for going fast, i.e. not for your typical application where the exhaust thrust of a low hp vehicle is minuscule. Even a few lb of thrust might be useful to me.
Let me ask something concrete. If I use the ratio from FC case (8000 hp -> 800 lb of thrust), and try to apply similar ratio of 10:1 to my bike's hp, how should I correct the result? Should I increase the ratio or decrease it, and if so by how much?
My thinking is that whatever fuel mixture goes in FC vehicle, it must have more energy per unit of weight than gasoline. So, to produce 1 hp in FC, would require less fuel mixture mass than to produce 1 hp from gasoline. Therefore, when my bike is generating 100 hp running on gasoline, the exhaust throws out more mass than in the case if my bike was powered by FC fuel mixture. So, the ratio should be decreased to maybe 9:1, or even 8:1 - which works to my advantage. If I assume the ratio of 8:1, this means 100 hp -> 12.5 lb of thrust, and 200 hp -> 25 lb of thrust - not a joke. Sure, if the bike's engine generates 500 lb pull at 200 hp in a certain gear, the extra 25 lb of thrust doesn't seem like much. However, for my purpose that would be very useful.
Does it make any sense?