---------------------------------------------------------- RV8-List Digest Archive --- Total Messages Posted Wed 06/30/10: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:45 PM - () 2. 08:01 PM - Jacking Point (Matt Dralle) 3. 08:07 PM - Lubing The Tail Wheel Fork Bearing... (Matt Dralle) 4. 09:08 PM - Re: Jacking Point (donkeyvet@aol.com) ________________________________ Message 1 _____________________________________ Time: 03:45:04 PM PST US From: Subject: RV8-List: I had always assumed that the reason most people took off without flaps is that the recommended flap speed of 100 is attained so quickly that they need to be retracted almost imediatly, but don't see why you couln't if you were right on the ball. Mark Rose RV8A 137MR ________________________________ Message 2 _____________________________________ Time: 08:01:11 PM PST US From: Matt Dralle Subject: RV8-List: Jacking Point Okay, so I'm sure this has been asked a few times already, and I should search the archive, but what the heck, let's start a new thread. I got my new tires today (Goodyear Custom Flight III, btw. Super sweet.) and started looking for ways to get them on. I can really only see two ways to jack the plane up easily with a normal jack. 1) I could put a short saw horse under the wing tie down and then put a hydraulic jack on it and lift the side of the airplane up by this point. If I just gently lift the plane by hand at this point, it seems like that's an awful lot of weight to be lifting that far out on the wing. Can the spars really handle this? 2) I could put a saw horse under the lower engine mount bolt to the firewall and use a hydraulic jack to lift the plane up. This seems less scary, but I question the shear strength of the bolt lifting all of the weight by this single point. What's the convential wisdom on jacking a tail dragger RV-8 to change the tires? There has to be a way with out building some elaborate dolphin contraption. BTW, with regards to my tire wear, since there's a fair amount of camber(?) afforded by the Grove gear, I've got nearly all the wear on the outside 50% of the tread. I could probably rotate them 180 degrees and get another 70 hours of flight time, which wouldn't be bad for 22-year old stock kit tires from Van's (remember, I swiped them from the RV-4 project after the brake incident). But, I probably should have rotated them a bit sooner. While there's not cord showing, the tread is gone. Live and learn; I'll be rotating these GYCFIII's in a more timely manner. If I can double my wear life by rotating because of the camber, I might get 1000 hours out of these babies! ;-) Matt Dralle RV-8 #82880 N998RV http://www.mattsrv8.com - Matt's RV-8 Construction Blog http://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV YouTube Channel Status: Enjoying The Fruits of 2500 Hours of Labor! ________________________________ Message 3 _____________________________________ Time: 08:07:00 PM PST US From: Matt Dralle Subject: RV8-List: Lubing The Tail Wheel Fork Bearing... How the heck do you lube the bronze bearing on the tailwheel fork short of taking the giant nut off. I lubed it up good during initial assembly, then at about 40 hours, it started to kind of stick, so I dissembled and lubed it again. Now at 70 its doing it again. I foolishly put a Zerk fitting in the body of the thing, thinking that next time I could just shoot some lube in there. Great idea except that it doesn't work for such a tight fit. Is there some "super lube" you can get that will last forever? I've used both graphite wheel bearing grease and Aeroshell #6 grease. Thanks! Matt Dralle RV-8 #82880 N998RV http://www.mattsrv8.com - Matt's RV-8 Construction Blog http://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV YouTube Channel Status: Enjoying The Fruits of 2500 Hours of Labor! ________________________________ Message 4 _____________________________________ Time: 09:08:50 PM PST US Subject: Re: RV8-List: Jacking Point From: donkeyvet@aol.com Matt, I modified a tall Harbor Freight hydraulic jack at the top to accomodate a screwed in tie-down ring. Tall enough to nix the saw horse. Seems to wo rk great. Seems like a 6g wing can handle some gentle jacking at that poin t. Chock all of the wheels. E-mail me @ donkeyvet@aol.com if you want a pi cture of the modification. Dennis Flosi -----Original Message----- From: Matt Dralle Sent: Wed, Jun 30, 2010 8:59 pm Subject: RV8-List: Jacking Point kay, so I'm sure this has been asked a few times already, and I should sea rch he archive, but what the heck, let's start a new thread. I got my new tires today (Goodyear Custom Flight III, btw. Super sweet.) and tarted looking for ways to get them on. I can really only see two ways to jack he plane up easily with a normal jack. 1) I could put a short saw horse under the wing tie down and then put a ydraulic jack on it and lift the side of the airplane up by this point. If I ust gently lift the plane by hand at this point, it seems like that's an awful ot of weight to be lifting that far out on the wing. Can the spars really andle this? 2) I could put a saw horse under the lower engine mount bolt to the firewa ll and se a hydraulic jack to lift the plane up. This seems less scary, but I uestion the shear strength of the bolt lifting all of the weight by this single oint. What's the convential wisdom on jacking a tail dragger RV-8 to change the tires? here has to be a way with out building some elaborate dolphin contraption. BTW, with regards to my tire wear, since there's a fair amount of camber(? ) fforded by the Grove gear, I've got nearly all the wear on the outside 50% of he tread. I could probably rotate them 180 degrees and get another 70 hou rs of light time, which wouldn't be bad for 22-year old stock kit tires from Van 's remember, I swiped them from the RV-4 project after the brake incident). But, probably should have rotated them a bit sooner. While there's not cord howing, the tread is gone. Live and learn; I'll be rotating these GYCFIII 's in more timely manner. If I can double my wear life by rotating because of the amber, I might get 1000 hours out of these babies! ;-) att Dralle V-8 #82880 N998RV ttp://www.mattsrv8.com - Matt's RV-8 Construction Blog ttp://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV YouTube Channel tatus: Enjoying The Fruits of 2500 Hours of Labor! -======================== ======================== =========== -= - The RV8-List Email Forum - -= Use the Matronics List Features Navigator to browse -= the many List utilities such as List Un/Subscription, -= Archive Search & Download, 7-Day Browse, Chat, FAQ, -= Photoshare, and much much more: - -= --> http://www.matronics.com/Navigator?RV8-List - -======================== ======================== =========== -= - MATRONICS WEB FORUMS - -= Same great content also available via the Web Forums! - -= --> http://forums.matronics.com - -======================== ======================== =========== -= - List Contribution Web Site - -= Thank you for your generous support! -= -Matt Dralle, List Admin. -= --> http://www.matronics.com/contribution -======================== ======================== =========== ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv8-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV8-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/rv8-list Browse Digests http://www.matronics.com/digest/rv8-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.