Dan, I think the shape of the header tank has got a lot to do with it. Mine is not a big rectangular, mostly flat bottom shape but rather is very shallow at the front and sort of swells untill reaching max at a point +/- 170 mm forward of the spar. At this point it follows the contour of the front deck on the top surface and forms a point at its lowest point in the centre. The whole tank slopes down to this point. I had to purchase the XCOM760 radio because the Microair was just too long and would have come up against the tank!
Regards Dene Collett KR2SRT builder South africa Whisper assembler See: www.whisperaircraft.com mailto: av...@telkomsa.net ----- Original Message ----- From: "Dan Heath" <da...@alltel.net> To: <kr...@mylist.net> Sent: Sunday, January 07, 2007 23:16 Subject: Re: KR> header tanks > This got me wondering, so I went to my W&B Spread sheet to check. From full > to 45 min reserve, mine moves .856" aft. Header tank only, 12 gallons.
