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Post by The Urban Mythbuster on Feb 19, 2016 20:44:23 GMT
They should have "supersized" the drifting part. Would you trust Adam & Jamie with a tank? On today's Mythbusters, we're testing the myth that you cannot make an Abrams tank explode using only road flares & piano wire.
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Post by silverdragon on Mar 10, 2016 7:26:23 GMT
Watched the drifting thing last night as it aired in UK.
Couple of things....
That was a "Reasonable" track to test, so no complaints, it had a fair mixture of corners.
But. And wait until you get to the "However" before you decide...
The car was wrong. WRC, world rally, the thing that makes those cars faster is 4WD. Its OK to try sliding the corner in a 2wd, but, the 4wd just leaves 2wd behind on fast rally stages, because all four wheels are getting a grip on the exit, the idea of "drift" in rally is a quick change of direction, and as soon as you are pointing in the right direction, straighten up and put the power on..... you dont OVER-Drift a corner unless you "messed it up"?... So you plan the corner, and at the apex, start the straighten up, to pull out straight.
Therefore, they car they used, was a "Compromise" between flat racing and Rally.
I would have loved them to get in say Travis Pastrama to show them a trick or two to better the times. And then get a real WRC car on the stage with right choice of tyres, suspension setup, and balanced for clay. Just to show what changes can be made in the actual car and not just how you drive it...
Rally is the car, the course, the driver, in that order. You can take the worlds best, even Sebastian Ogier, but put him in a standard production base line model of his preferred VW Polo, against the hugely altered Polo "R" he races in, and the time differences will be in calendar months?... Even take Petter Solburg's Subaru WRC against the standard road production WRX, and compare the times after fettling the rally stage car, you will see vast differences between a car fettled for tarmac against dry clay dust.
The tyres alone, get the wrong compound or tread pattern, that can be worth a second a stage on the WRC.
Jamies driving would suit a 2wd race car, where the extra weight of a 4wd drive system would just slow you down. If you have 4wd, this is when you use it. Also, "Drifting" is different. Drifting on tarmac "For show" just involves letting the back end get loose... Drifting for corners on WRC times lap involves a lot more control of how much how far and how to let go of the drift to power out.....
I do think the experience of a trained driver could have improved Adams lap times.
However.....
The result is "Valid" in that, they proved, drifting is NOT faster just by using it... it depends more on the car the condition and the driver than just yanking the handbrake....
I have experience of WRC, but am not that good to be competitive, what makes a competitive WRC driver is more time practising WRC stages and preparing the car than I spend on the road every week.
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Post by silverdragon on Mar 10, 2016 7:38:25 GMT
For the fish tank, each test involved the team using an open-air tank. Thus, no filter. Would a filter be bullet-proof? Someone could test a filter on its own outside of the tank, then inside of a tank to see if it would prevent the back wall from shattering (and thus still posing a chance of injury via shrapnel). That "Depends". There are many varieties of filter, In tank and Under tan, down flow and upflow, under gravel, air moved and pump moved. On under-gravel inside the tank systems where air in tubes is used to create a flow up from under the gravel filter, there is no motor inside the tank, and only a couple of thin tubes full of slowly moving water and air at a couple of points in the tank... not much to stop anything at all there. On the In tank pumped water systems, if you hit the pump, good change the metals in the pump may stop the bullet?.. If all you have is an overflow in the tank and the main filter is under the tank, all you have is an extra 2 walls for the bullet to go through if the overflow is central, one wall if its a side of the tank. In tank also depends on the filter medium. If you use a matting, then that matting edge on, may act a little like the Kevlar idea, many strands may catch the bullet. If you use Sponges, it may not do anything at all. If its a gravel filter, well, that will stop the bullet "eventually", just depends on how much gravel you get to go through.
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Post by OziRiS on Mar 20, 2016 11:25:57 GMT
For the fish tank, each test involved the team using an open-air tank. Thus, no filter. Would a filter be bullet-proof? Someone could test a filter on its own outside of the tank, then inside of a tank to see if it would prevent the back wall from shattering (and thus still posing a chance of injury via shrapnel). That "Depends". There are many varieties of filter, In tank and Under tan, down flow and upflow, under gravel, air moved and pump moved. On under-gravel inside the tank systems where air in tubes is used to create a flow up from under the gravel filter, there is no motor inside the tank, and only a couple of thin tubes full of slowly moving water and air at a couple of points in the tank... not much to stop anything at all there. On the In tank pumped water systems, if you hit the pump, good change the metals in the pump may stop the bullet?.. If all you have is an overflow in the tank and the main filter is under the tank, all you have is an extra 2 walls for the bullet to go through if the overflow is central, one wall if its a side of the tank. In tank also depends on the filter medium. If you use a matting, then that matting edge on, may act a little like the Kevlar idea, many strands may catch the bullet. If you use Sponges, it may not do anything at all. If its a gravel filter, well, that will stop the bullet "eventually", just depends on how much gravel you get to go through. I still have an inkling the water will have more effect on the bullet than the filter ever would, regardless of filter type.
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Post by silverdragon on Mar 20, 2016 13:19:07 GMT
I have a suggestion. Fire a bullet into a long tank of water and see how far it travels before it stops. Now fire a bullet into a sand bag (try a one-ton bag) and see how far it goes.
Try again with damp sand, just for reference....
Some people use a sand filter for final filtering, it does stop micro-fine particles, but they are a bugger to clean.
In my own Gravel filter, the chunks that go in the top are anything up to the size of a zippo. (Anything that size or bigger gets hit with a hammer to break it up?..) I use a Limestone gravel, it hardens the water and adds salts to it, which are good for the fish. I also introduce fresh water into that tank to mix with pond water, as you have to change out about a quarter of your water every week to ensure you get a good cycle going on there and it stops toxins building up. Mine is set on a trickle fill, so its constant, at about 1,000 gallons over a week, which allows it to mix nicely with the filter water, and as I also mix in Rain water in that as well, its a nice flow of fresh water for the fish. The limestone also helps get rid of any water treatments in the tap water. Its about 3ft wide, its a plastic 50 gallon water tank you would find on the end of a drainpipe for watering the garden, and its half full of Gravel, unless your using "the magic 50 mill" or specialised rounds, I dont think your getting through that one with a standard bullet.
I would however like to see someone try... just not with mine, ok?.. it takes about 2 days to empty and refill on the cleaning cycle, that gravel gets heavy...
Yeah, I know, its a POND, but, I have seen massive indoor tanks that can hold upwards of over a thousand gallons, so it really depends on the size of your tank and how clean you want your water...
I have also seen some tanks that use a "waterfall" type filter that have a metal mesh (Stainless steel) strainer below the overflow from the tank that catches the larger lumps, that mesh can start at 5mm and go onwards in decreasing sizes to 1mm in the sheets of mesh before it hits anything else, can be up to a half inch think in metal strands, over a 4inch thick filter "wad", that much metal may deflect or catch a bullet?..
That type of filter is just great for high population tanks, as the waterfall puts oxygen into the water at a good rate... I have three waterfalls on my own filters, and extra Air balls in the pond.
Again, there are as many different filter types as you can think of.
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Post by the light works on Mar 20, 2016 14:37:16 GMT
I have a suggestion. Fire a bullet into a long tank of water and see how far it travels before it stops. Now fire a bullet into a sand bag (try a one-ton bag) and see how far it goes. Try again with damp sand, just for reference.... Some people use a sand filter for final filtering, it does stop micro-fine particles, but they are a bugger to clean. In my own Gravel filter, the chunks that go in the top are anything up to the size of a zippo. (Anything that size or bigger gets hit with a hammer to break it up?..) I use a Limestone gravel, it hardens the water and adds salts to it, which are good for the fish. I also introduce fresh water into that tank to mix with pond water, as you have to change out about a quarter of your water every week to ensure you get a good cycle going on there and it stops toxins building up. Mine is set on a trickle fill, so its constant, at about 1,000 gallons over a week, which allows it to mix nicely with the filter water, and as I also mix in Rain water in that as well, its a nice flow of fresh water for the fish. The limestone also helps get rid of any water treatments in the tap water. Its about 3ft wide, its a plastic 50 gallon water tank you would find on the end of a drainpipe for watering the garden, and its half full of Gravel, unless your using "the magic 50 mill" or specialised rounds, I dont think your getting through that one with a standard bullet. I would however like to see someone try... just not with mine, ok?.. it takes about 2 days to empty and refill on the cleaning cycle, that gravel gets heavy... Yeah, I know, its a POND, but, I have seen massive indoor tanks that can hold upwards of over a thousand gallons, so it really depends on the size of your tank and how clean you want your water... I have also seen some tanks that use a "waterfall" type filter that have a metal mesh (Stainless steel) strainer below the overflow from the tank that catches the larger lumps, that mesh can start at 5mm and go onwards in decreasing sizes to 1mm in the sheets of mesh before it hits anything else, can be up to a half inch think in metal strands, over a 4inch thick filter "wad", that much metal may deflect or catch a bullet?.. That type of filter is just great for high population tanks, as the waterfall puts oxygen into the water at a good rate... I have three waterfalls on my own filters, and extra Air balls in the pond. Again, there are as many different filter types as you can think of. keep in mind they were testing a fish tank that was in the 20 gallon size range. I have little doubt your "fish tank" would stop most anything that qualified as man portable.
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