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		Sam, I reckon you might be alright without the tether. I think that rule is more aimed at grade 3 arenas or less (i.e. with a net/fabric roof). The Robo Challenge arena can stand all sorts of punishment (Bitzawood's disc shattering with an almighty bang last year was proof of that) so it should be more than capable of coping with a stray axe head. Heck, your tether would probably give way before the welds on the axe do!
Best bet if you're struggling would be to give James or Grant a ring (their numbers are in the event info pack) and just double-check with them where they stand on it.
	 
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		I was thinking along the same lines tbh the axe is so strong I can't see it going and if it does its hardly going to do much damage to the walls that have spinners flying out the arena and bashing into them, ill double check with James or grant though just to make sure
	 
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		So i was in the middle of putting Hatchet back together and i've been called into work early but i thought i'd just post a couple of pics to show the new scoop, i think it really completes the look of the machine, i do need to cut the bolts down on the sides but here it is....
http://i921.photobucket.com/albums/a...ps4da5e1f7.jpghttp://i921.photobucket.com/albums/a...pscebd0c54.jpg
	 
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		The steel armour makes it a much tougher proposition to beat - is that some more steel around the back?
	 
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		It's Ali at the back, only brackets holding on the HDPE plate. The front is only 2mm stainless (better than nothing). I should have made it from something thicker.
	 
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		What Dave said, tbh the front scoop is only to help get underneath other robots to help with pushing and to stop the front of the robot jumping when i fire the axe it provides very little in the way of 'armour', the ali at the back is just to brace the corners so a spinner couldn't get so much of a grip and pull the join out. The back and sides will be getting some 11mm polycarb as extra armour so hopefully Hatchet should stand up.
	 
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		Spent today putting Hatchet fully back together and just generally checking everything is how i want it, all that's left to do now is make up a cradle of some sort, a top panel and knock up a couple of spare chains. Here it is just having a pre test charge...http://i921.photobucket.com/albums/a...pse67c7f24.jpg
	 
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		Looks good Sam, looking forward to our fights :) started painting today, although all may be in vain :p
	 
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		Thanks Chris i'll try not to mess up your paint job too much :), tbh i say we both go for the Aussie in the first fight
	 
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		Ha before he makes a mess of both of us? :p