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Before you buy any dextrose or rocket making supplies look at this web page www.jamesyawn.com The methods on his page worked pretty well for me. P.S. the corn syrup is not necessary just experience with casting the grains. PPS. Does anyone know why Tripoli doesn't allow sucrose engines at their EX l...

Does the bottle have a web page where you could look up the msds? I did this with the Spectricide brand and it turned out to be 99%. After going through several bottles at $5/lb. I soon realized it would be a lot cheaper to buy a bag of fertilizer. I got 50 lbs. for just $27.00. It is prilled, but t...

Let me add just a few things. I keep hearing people say that rocket propellant is low energy (rocket candy in particular). What do you mean by low energy? Rocket candy may not have enough energy to shatter steel, like a high explosive, but enough to ruin your day (or life). Rocket candy has more pow...

Ben that sounds great could you post some of the video:0 Oh I have a potential rocket idea just your thoughts on this. Ammonium nitrate is soluble at over 1000g/100g of water at 100 C. Has anybody ever heard of a monopropellant rocket that would use 90% liquid AN similar to a H2O2 rocket? Can the AN...

Quick question; How much does residual moister, in sugar propellants, effect the ISP? I know it will drop the burn rate, but that can be compensated for with a higher KN value. How much does it actually change the efficiency? You have Nakka saying he is getting ISP's of 124, and he really doesn't go...

Anders The magical 86% has actually been substantiated by research, if applied properly. This shouldn't be a problem because I will have the machine take out the guesswork. It is kind of like exercise, it can do a lot of good, nothing at all, or even harm you depending on how it is applied. The bigg...

Thanks Pezman I have already contacted a few attourneys and will be going for the preliminary filing asap.

Hello Everyone I have a great invention idea that is worth millions maybe even hundreds of millions that I need to bring to market. I know we have all thought of good ideas from time to time, who hasn't. In fact I have thought of thousands of ideas in my life and all of them in the end had something...

Dang I have noticed that no matter if I am using corn syrup, sucrose or dextrose, if I go by the standard 65/35 ratio it just doesn't cast good. The propellant that was like dough was made out of 44 grams corn syrup (estimated to be roughly 35 grams actual sugar) 65 grams KNO3 1 gram iron oxide re-c...

Ray thanks for the info on the bates grains. I should be making some fine rockets with my new propellant formula. It casts so easy it is almost like dough when it is still hot but cold enough to touch.

This might be the end for the end burner:(. I just don't think that it has enough mass flow to really do much. My initial reason for wanting to make an end burner was to get a longer burn time. As I am finding out it might be a lot easier to work with a slower burning propellant. I made a batch of p...

14,600 ft Not bad at all! Sounds like it was pretty fun. I didn't even know about the event until it was too late to go. It really isn't that far from my neck of the woods. Hopefully I will make it next year.

It worked!! My end burner finally worked. I tested a motor with a reinforced nozzle and it worked! I don't have any way to measure the thrust. Does anybody know a simple way to do this so I can get an idea of the burn time and power output of this engine? Or can I guesstimate what it is doing if I t...

You can easily make ethanol from just about any sugar source. However the yeast are very finicky. Most yeast's won’t ferment past 12% alcohol or they begin to die off, so make your starting gravity accordingly. Also yeast need nutrients to grow properly and a good aerobic cycle at the start of the...

I tested some more end burners this weekend. None of them worked, they kept blowing out the nozzle after a second or two. The rush of the exhaust is really powerful and definitely looks like they should work. I have just been cementing the nozzle into place without the end cap. I will try this next ...