I used 3 bathroom scales BUT I calibrated them. I got 6 plastic drums of water each weighing 20kg (verified on certified scales) I then stacked these on the scales taking readings as I add each drum. (found that the scales were very in accurate over 80kg, in fact one set of scales was reading 98kg with 120 kg on it) With these readings I was able to determine a calibration calculation for each scale to apply to the readings when actually weighing my KR2. I then weighed my KR2 using all 3 scales at each point and averaging the calibrated values which were within 2% from min to max. This was very acurate as after I had a few hours on it I then flew to Mareeba and had it weighed on certified aircraft scales by a qualified person. The results were less than 1% from my bathroom scales excersize.
Tips: ------- When weighing on bathroom scales ensure that you have a solid board that covers the whole of the top surface to ensure the load is distributed evenly. (Weigh the board and take off from readings AFTER applying the calibration calculations) Ensure the wheel is centered on the board/scales. Ensure the ground is level and even, no lumps or dirt under the scales. Do not roll the aircraft on to the scales, pickup each wheel (I used the leg) and place it gently on the scales. Do not change the weight of the aircraft while on the scales as this spreads the gear and puts side loading on the scales and causes them to be inaccurate. Hope this helps Regards Barry Kruyssen Cairns, Australia RAA 19-3873 k...@bigpond.com http://www.users.bigpond.com/kr2/kr2.htm ----- Original Message ----- From: Dan Heath To: kr...@mylist.net Sent: Tuesday, November 01, 2005 12:09 PM Subject: KR> W & B dilemma Jerry and I have a dilemma. Our WB gave us very conflicting results with each scenario that we performed. It had Jerry weighing 35 pounds and me weighing 37 pounds different from the empty weight. You guys, WHO HAVE DONE THIS, what did you use to weigh your planes? We are using 2 bathroom scales with a board over them under each wheel and one under the tail. The tail weights are consistant and are reasonable, but the other ones are all over the place.
