---------------------------------------------------------- Zenith601-List Digest Archive --- Total Messages Posted Thu 12/15/11: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:48 AM - Re: Weight & Balance (DaveG601XL) 2. 07:11 AM - Weight & Balance (BobbyPaulk@comcast.net) 3. 07:43 AM - Re: Weight & Balance (Mark Hubelbank) ________________________________ Message 1 _____________________________________ Time: 03:48:01 AM PST US Subject: Zenith601-List: Re: Weight & Balance From: "DaveG601XL" My numbers are more similar to your friends, but I do not need a bunch of fuel to stay inside the rear limit. I have a Jabiru 3300, gear flat side forward, XL-B upgrade. R=283@625mm L=299@625mm N 7@-530mm -------- David Gallagher 601 XL: flying, 200+ hours now Next project: Pietenpol/GN-1 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=360952#360952 ________________________________ Message 2 _____________________________________ Time: 07:11:55 AM PST US From: BobbyPaulk@comcast.net Subject: Zenith601-List: Weight & Balance Thanks Mark and Others who responded. Both aircraft have the gear slanted forward. Both aircraft were leveled in pitch and roll axis on the scales. Nose wheel is 200.2# at -508 mm. Right wheel is 290.2# at 657.224 and Left wheel is 306.6# at 650.875 Mark If you notice the nose wheel is only 2 mm difference from yours while the mains are over 20 mm. difference. By your numbers your aircraft is 941 lbs. I do not understand how it can be that heavy. I also have a problem with some light weights showing 730 Lbs. with multicolored paint jobs. I am not doubting anyone - just looking for a logical explanation. Bobby ________________________________ Message 3 _____________________________________ Time: 07:43:08 AM PST US From: Mark Hubelbank Subject: Re: Zenith601-List: Weight & Balance Bobby, I should have stated that the weights posted were with full (30 gal) fuel. Take 180 pounds off to get the empty weight of 761. It was more like 730 before the "upgrade". There is no paint. I have been reluctant to add the weight of paint aft of the wing. Other than some error in wheel location measurement, I have no ideas why the two planes you are checking are so different. Once, I did make an aircraft weight measurement error by leaving a rope attached to the tail. It was a very small weight error but way back there it made a big difference in CG. Just saying something small at the very tail or nose could make a disproportional difference. I personally believe the Jabiru engine mounts are too short. For the weight of the engine, it should have been further forward in this design. On 12/15/2011 10:09 AM, BobbyPaulk@comcast.net wrote: > Thanks Mark and Others who responded. > Both aircraft have the gear slanted forward. Both aircraft were > leveled in pitch and roll axis on the scales. > Nose wheel is 200.2# at -508 mm. Right wheel is 290.2# at 657.224 and > Left wheel is 306.6# at 650.875 > Mark > If you notice the nose wheel is only 2 mm difference from yours while > the mains are over 20 mm. difference. By your numbers your aircraft is > 941 lbs. I do not understand how it can be that heavy. I also have a > problem with some light weights showing 730 Lbs. with multicolored > paint jobs. > I am not doubting anyone - just looking for a logical explanation. > > Bobby > > * > * ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message zenith601-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Zenith601-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/zenith601-list Browse Digests http://www.matronics.com/digest/zenith601-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.