Get a altimeter from a model rocket place, stick it in/on avocado. Find maximum height, apply maths etc.
L-Plate Rider
Get a altimeter from a model rocket place, stick it in/on avocado. Find maximum height, apply maths etc.
Hardcore Biker
you actually have good ideas?Originally Posted by BMW_RACER
Custom User Title
that'll only work if you attach altimeters to all your avocados...it'll also only work if you're high enough to witness and record the highest altitude, unfortunately for you glue does not always work but it seems to keep your posts consistent.
high def video camera :P
only $1800...
Highway Biker
Mate, if you want the velocity of the avocado the best thing you can do is find a wall, measure 10m from the wall to the end of the nozzle, shoot and measure the time it takes to hit the wall, do a couple of these, average it out and you will have a fairly good average velocity.
i.e
Distance= 10m
Time taken to hit wall = 1.7s
Velocity = 10/1.7 = 5.9 m/s x 3.6 = 21.2 km/h
This is a) an infinite amount of times easier, b) most likely a lot more accurate as statistically speaking human error should be normally distributed having a mean error of zero, and wind resistance is negligible.
Not to mention all the difficulties in measuring angle of deflection on impact, actually hitting the block, assuming no friction loss in the roatation of the block.
If you really want an accurate measure of velocity, set up a video camera and a scale beside the muzzle and play back the clip measuring the distance the avocado moves per frame.
Homo Sapiens Vulgaris
You got a filthy mouth on you BMW_RACER - any progress with the DEI kit yet?
The altimeter idea doesn't work for the simple reason that they are not very precise. Even with state-of-the-art GPS gear it'll take a couple of seconds to get the height just fairly precise.
A common altimeter which works based on air pressure is far less accurate and sensitive.
HD doesn't matter. What is important is the FPS - and how consistent this is.
You can do that yourself - you should be a senior member by now. (Think edit...)
Good idea - except that the speed is likely to be considerably higher than 21.2 km/h and therefore it becomes very tricky to measure the time precisely with a handheld stopwatch -> specialist equipment -> dollars.
Then you may say that we'll just use a distance of 50 meters - however then we get into trouble with the trajectory and the fact that you are measuring the average speed over said distance.
It is preferential to refrain from the utilisation of grandiose verbiage in the circumstance that your intellectualisation can be expressed using comparatively simplistic lexicological entities. (...such as the word fuck.)
Remember your humanity, and forget the rest. - Joseph Rotblat
L-Plate Rider
Who cares, just shoot shit with it.
Loud and Uncouth
Who frikin cares about how bloody fast an avocado will goo...sheesh, get a life!
Winding up drongos, foil hat wearers and over sensitive KBers for over 14,000 posts...........
" Life is not a rehearsal, it's as happy or miserable as you want to make it"
e mare libertas
Faster than the Eagle auw!
kiwibiker is full of love, an disrespect.
- mikey
Highway Biker
maybe i'm just an idiot but why on earth would he need it very precise?
also if it's done over a distance of say 20-30m all it would take to get a good average reading would be 10 shots with 2-3 people recording the time taken. This should give a fairly sufficient estimate at what the velocity is, especially considering the variability in mass of avocado and air/fuel mixture
Hardcore Biker
Me i have an interest in trajectorys and maths i like to know how stuff worksWho frikin cares about how bloody fast an avocado will goo...sheesh, get a life!
L-Plate Rider
Was that directed at me? If so I think you misinterpreted my postWho frikin cares about how bloody fast an avocado will goo...sheesh, get a life!
Homo Sapiens Vulgaris
If you're going to do a job - at least do it well.
Either do or don't - the half-arsed approach is a waste of time.
Now, this is more of an exercise in how to do the measurement without all sorts of fancy specialist equipment - and still get a fairly accurate measurement.
It is preferential to refrain from the utilisation of grandiose verbiage in the circumstance that your intellectualisation can be expressed using comparatively simplistic lexicological entities. (...such as the word fuck.)
Remember your humanity, and forget the rest. - Joseph Rotblat
Bogeyman
Point the fucker straight up.
Measure off 100M horizontally.
Get a sextant... OK so it’s moderately specialised… use a protractor and a sighting tube.
Fire said fucker.
Pick the max altitude with the protractor/sight.
Make with the trigstuff.
Clamp the fucker to a skateboard along with enough weight to make up, say, 10kg.
Weigh the avo.
Fire fucker.
Measure recoil distance.
Make with the numbers.
Go soothingly on the grease mud, as there lurks the skid demon
Hello
i remember our science center used to have a cricket net where you bowled the ball and it told you how fast it was.... that could work
Forum whore
Wot he said. Somebody (or maybe a gun shop if you ask nicely enough and maybe flick 'em some cash) must have one you can borrow. FFS don't tell them what you are measuring though. Tell 'em you're reloading cartridges for a .303 or something.
And by the way you need a firearms license to possess or use a spud gun.
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