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Thread: [Acro] Re: Box markers - suggestions on how to ...
Message: [Acro] Re: Box markers - suggestions on how to make them?
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From: Brian Howard <BK at newattaero.com>
Date: Sat, 16 Feb 2002 04:34:06 UTC
Peter, >Anybody got any clever ideas on the simplest way to make a box marker? One of the easiest types of markers to put out are made of sail cloth with metal grommets sewn into the corners and along the sides. Small "camping tent" type stakes can then be driven into the grommets to secure the panels on to the ground. Makes it even easier if you have the T's and L's premade so you don't have to deal with all the individual panels. After the contest, throw the markers in the wash and you'll have a set of nice white markers the next time you need them. You can either have the markers sewn by a professional, or find a willing chapter member volunteer. For markers which are permanently left out, painted concrete pads are the gold standard, but more practical (and cheaper!) are either painted sheets of corrugated aluminum, or white plastic 55-gal drums which have been cut in half lengthwise and then staked to the ground. Two or three drums have to be laid end-to-end to make the markers long enough. The plastic drums can be bought new, but depending on where you live, finding a supply company may be hard or easy. >Also, anybody know the width of the lines? I've only seen absolute >dimensions mentioned. The "official" dimensions for each rectangular panel making up a T or L, is 2m x 9m. Most chapters don't go that large, however. I've found that making each panel 3' x 9' provides good visibility from the air. I would let the width be driven by the width of the fabric bolts so it doesn't have to be cut. Best, Brian Howard ---------------------------------------------------------------------------- Brian K Howard, CFI BK at NewAttAero.com Chair, IAC Rules Committee voice: 520.360-ROLL Editor, IAC Heads Up! Column fax: 801.912.7069 FAI, National, & Teaching Judge Extra 300/L, N343BH New Attitude Aerobatics "Confidence Building For All Pilots" ----------------------------------------------------------------------------