jackssmirkingrevenge wrote:

crazyivan wrote:i cant afford a turbocharger...

Ah, but can you weld?

i cant weld metals too...

@Crazyivan: Remeber that this is water and not air. Any system will need to be tilted at an angle so all the water drains, and doesn't shoot both air and water out the nozzle. Although the acceleration may be enought to make the water cover the nozzle and stop air escaping. To keep the water in you...

CpTn_lAw wrote:Or you can simply build a gas turbine engine...like the ones on model planes. All you need is sch40 steel pipe, reducer, fittings, and a car turbocharger....some cool turbo props get bicycles to 70 mph.

i cant afford a turbocharger...

I'm not sure about what cptn is proposing but with that diagram apparently ivan still doesn't get it, are water guns allowed in your country cause its the same concept :roll: the air and water are in the same chamber the output is on the bottom with the water so when the output opens water comes ou...

how about something like this? the one u showed me above will be too long to fit on my rack. but how would i stop the water from pouring out of the nozzle?

about point 3a. if i dont put it at the exhuast where should i put it in order to release the water+air mixture? b)i m thinking of making a longer wooden lever to reach the valve at the back actually. and i am going to use class E upvc pipes. its rated to 15bar or 217psi. suppose i use a 1" nozzle.....

ok so i have made a rough diagram based on the length and width of my bicycle rear rack...i only have space for one of these. but i dont know what diameter should the ball valve/nozzle be to be strong enough to push a 70kg mass (bike+rider) on wheels. anyone knows how to calculate? :?: :?: and is th...

okay so how much water should there be in the chamber? 50% filled? sorry i have 0 experience with water rockets...

is using a fire extinguisher as a chamber a good idea? as i thought it could be pumped up to much higher pressures than pvc? also thanks for your help guys! very helpful

pardon me being a noob but why water and not air? asking cause my steel bike generally doesnt like water...and i prefer not to get wet.

yea i only want that short burst of speed just for fun....any idea what kind of pressures and how should i make it?

so far i have only made 2 pneumatic cannons with ball valves....

hi everyone...wonder if it is possible to make a cannon strong enough to propel a bicycle? i am toying with the idea of mounting a cannon on the rear of my bicycle.... rockets are not legal in my country so yea i am wondering if it is possible to generate enough energy to propel a bicycle with a rid...

thanks i live in singapore....i think i will go down the the plumbing shop tonight and take a look at the pipes and ratings and ask a bunch load of questions...and i think i will use the reducer u mentioned instead of a bushing... :D but about the dimensions u mentioned 300mm long 80mm diameter...th...

hi guys i am new here...i am 16 and i am making a mini cannon that fires small wooden balls(made myself) for my school project....i hope to achieve the most "cannon-like" gun thus i have chosen to use combustion instead of pneumatic....my english isnt very good hope u guys dont mind. i have made a v...