---------------------------------------------------------- Lightning-List Digest Archive --- Total Messages Posted Mon 08/09/10: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:07 AM - Re: hackman mixture unit (flylightning) 2. 04:23 PM - Re: Lightning Elevator flutter (Dave) 3. 08:31 PM - Re: Lightning-List Digest: 5 Msgs - 08/08/10 (...) ________________________________ Message 1 _____________________________________ Time: 06:07:51 AM PST US From: "flylightning" Subject: RE: Lightning-List: hackman mixture unit Only to remember to screw it back in when you come down.done that once or twice engine doesn't like the lack of fuel! Nick _____ From: owner-lightning-list-server@matronics.com [mailto:owner-lightning-list-server@matronics.com] On Behalf Of Tex Mantell Sent: Sunday, August 08, 2010 6:48 PM Subject: Lightning-List: hackman mixture unit I have recently installed the Hackman Mixture control in my Lightning and it seems to work as advertized. At cruse at altitude its save about a half gallon an hour as indicated by the flow meter. I would like to know who else is using this device and what experiences, precautions, etc. that others have found. Thanks TEX ________________________________ Message 2 _____________________________________ Time: 04:23:09 PM PST US From: "Dave" Subject: Re: Lightning-List: Lightning Elevator flutter Smokey I have an Esqual, installed gap seals, had stick "shimmy" thinking it to be "flutter". Removed gap seals and all is good, this was happening at 135 to 140. My question, do you have gap seals on? Dave ----- Original Message ----- From: robert keen To: lightning-list@matronics.com Sent: Sunday, August 08, 2010 5:13 PM Subject: RE: Lightning-List: Lightning Elevator flutter Nick, I have experienced elevator flutter twice at around 140 knots indicated. I was told by the Australian agent Dennis, that it would be a loose tape under the wing. I have not yet retaped the wing joint yet, but I would like the Mass Balance figures so I can check the elevator myself. Can you send me the info please? I will keep you posted on what I find. Also do you have the mass balance figures for the ailerons? Should the Lightning have bungie cords on the elevator pushrod to hold some weight? Thanks Smokey. From: owner-lightning-list-server@matronics.com [mailto:owner-lightning-list-server@matronics.com] On Behalf Of flylightning Sent: Thursday, 5 August 2010 11:06 PM To: lightning-list@matronics.com Subject: RE: Lightning-List: Lightning Elevator flutter No. Did you experience this or just simply asking? The prototype was mass balanced at first but when looking at light sport and saving weight we removed the balances and retested. There was no evidence of flutter. We dive test every LSA Lightning to Vne, 180knts IAS ( 208mph) with proper attempts to induce flutter with no issues. It is required by the ASTM on every aircraft. Nick Otterback Arion Aircraft, LLC ------------------------------------------------------------------------- ----- From: owner-lightning-list-server@matronics.com [mailto:owner-lightning-list-server@matronics.com] On Behalf Of robert keen Sent: Thursday, August 05, 2010 3:06 AM To: lightning-list@matronics.com Subject: Lightning-List: Lightning Elevator flutter Has anyone had a problem with elevator flutter? Can anyone tell me the mass balance limits of the lightning control surfaces? Thanks Smokey http://www.matronics.com/Navigator?Lightning-List http://forums.matronics.com http://www.matronics.com/contribution http://www.matronics.com/Navigator?Lightning-Listhttp://forums.matronics. comhttp://www.matronics.com/contribution Internal Checked by AVG - www.avg.com 18:25:00 ________________________________ Message 3 _____________________________________ Time: 08:31:30 PM PST US Subject: Lightning-List: Re: Lightning-List Digest: 5 Msgs - 08/08/10 From: "..." Nick and Buz, I'm liking the Aussie tape explanation for Smokey's perceived elevator flutter. Went roaring out of PHX solo in a turbo 310 doing its post-annual test flight years back... in a year the 400 series were regularly shedding empennage (turned out they needed trim tabs on *both* elevators, not just one). As I pushed over and accelerated toward 200 at cleared altitude, yoke became a thrashing blur and tailcone a buzzing megaphone. Pulled power and declared Big M rolling into the 180, getting the always welcome "cleared to land any runway any taxiway". Vibrations slowed in frequency and lessened in amplitude during the fully controlled turn and slow descent but remained perceptible into flare... which began with crash truck guys roaring alongside pointing and laughing at something I couldn't see from left seat. A long slender (like six feet by inches) starboard dorsal wing root aluminum fairing (engineered to reduce interference drag between wing and fuselage slab side) had peeled back and distorted airflow, I guess undulating same. It had been put back in place by one guy before lunch who inserted dozens of screws but hadn't finished torquing all down and didn't flag it. Chief glanced at area during lunch and signed and handed me the airplane. I poked and prodded the usual suspects, glanced there, and flew. Oops. Have brought along the Swiss Army or other multitool since... to positively check and not just eyeball shyte like that at times like that. ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message lightning-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Lightning-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/lightning-list Browse Digests http://www.matronics.com/digest/lightning-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.