Yeah I know- kind of an odd thread, but you'll see what I'm on about.
Down here in the South Island, haybales are commonly used as crash protection by street race organisers. In the good old days they could easily get the old fashioned 'conventional' bale. A dry standard bale weighs about 20 to 25kg, so even if there's a stack of them when you go flying into them they'll move easily enough and slow you down fairly gently(ish).
Lately the supply of conventional bales is drying up. I doubt theres an agricultural contractor in NZ that still makes them. The most comon types of bale are now medium squares and large squares. A medium squre is equivalent to 10 to 12 conventional bales, a large square is equivalent to 12 to 15.
Because of this lack of supply, street race organisers have started using Medium or Large square bales. I've seen them at a couple of races lately. If you slide into a Medium or Large square bale, it's not gonna move much...if at all, because it weighs at least 10 times what the old conventional bales did.
A decent haybale is definitely NOT soft (I know this because I moved thousands of the bloody things in my youth). If you flew into an old conventional bale that was sitting against a wall, it would BLOODY HURT. The reason they worked is because they were small and light, so if you flew into a stack of them, you would only be effectively hitting one or two, and you would knock them out of the way, slowing down in the process. They were a lot softer than concrete and because they were small and held together by two bits of twine, they would bend or fly to bits. If you fly into a wall of Medium squares, you'll hit something that weighs about 250kg, so it wont move much and it definitely isn't going to bend or fly to bits.
Thats what I'm concerned about. I'm going to write a letter to MNZ pointing out this out and see if they can produce some guidelines. Anyone got any suggestions/ thoughts that are worth adding?
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