---------------------------------------------------------- Tailwind-List Digest Archive --- Total Messages Posted Fri 05/21/04: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:38 AM - Re: Autopilot (William Bernard) 2. 09:18 AM - Re: Autopilot (Jim and Donna Clement) 3. 05:52 PM - Re: Autopilot (ROBERT MATTESON) 4. 07:08 PM - Re: Autopilot (Mcculleyja@aol.com) 5. 09:03 PM - Cowling woes (Brian Alley) ________________________________ Message 1 _____________________________________ Time: 05:38:47 AM PST US From: "William Bernard" Subject: Re: Tailwind-List: Autopilot --> Tailwind-List message posted by: "William Bernard" Jim, I don't suppose you got a picture or two of the installation behind the seat? Bill ----- Original Message ----- From: "Jim and Donna Clement" <168x@merr.com> Subject: Re: Tailwind-List: Autopilot > --> Tailwind-List message posted by: "Jim and Donna Clement" <168x@merr.com> > > You can over ride the servos without disengaging but you can still tell it > is trying to do something. A disengage switch is mounted on the stick.The > servo arms are connected to the aileron bellcrank and elevator tube with > 3/8" aluminum rod with heim type rod ends. I drilled a 3/8" hole thru the > aileron bellcrank and welded in a bushing for a 3/16" bolt. On the elevator > tube I made a 1" long clamp from 7/8X.058" tubing and one of the two clamp > bolts is used to fasten the rod end. With the auto pilot off you can't tell > it is there. Jim C > > > ----- Original Message ----- > From: > To: > Sent: Thursday, May 20, 2004 8:30 PM > Subject: Re: Tailwind-List: Autopilot > > > > --> Tailwind-List message posted by: Mcculleyja@aol.com > > > > Jim, > > > > How do the servos attach to the bellcrank and to the elevator tube from > the > > standpoint of disengaging the servo? Is the de-coupling handled by some > type > > of electrically activated "clutch" or similar device within each servo? > If the > > disengagement mechanism failed to release can the servo be manually > > overpowered? > > > > In a message dated 5/20/04 1:49:22 PM Eastern Daylight Time, 168x@merr.com > > writes: > > > > > The aileron servo connects to the left bellcrank and the > > > pitch servo to the long elevator 3/4" tube. > > > > > > > > > > > > > > > > > > > > ________________________________ Message 2 _____________________________________ Time: 09:18:03 AM PST US From: "Jim and Donna Clement" <168x@merr.com> Subject: Re: Tailwind-List: Autopilot --> Tailwind-List message posted by: "Jim and Donna Clement" <168x@merr.com> Bill, I was going to take some pictures before Bob came to pick it up but forgot the camera. I think he will be back, I'll try then. JimC ----- Original Message ----- From: "William Bernard" Subject: Re: Tailwind-List: Autopilot > --> Tailwind-List message posted by: "William Bernard" > > Jim, I don't suppose you got a picture or two of the installation behind the > seat? > > Bill > ----- Original Message ----- > From: "Jim and Donna Clement" <168x@merr.com> > To: > Sent: Thursday, May 20, 2004 8:57 PM > Subject: Re: Tailwind-List: Autopilot > > > > --> Tailwind-List message posted by: "Jim and Donna Clement" > <168x@merr.com> > > > > You can over ride the servos without disengaging but you can still tell it > > is trying to do something. A disengage switch is mounted on the stick.The > > servo arms are connected to the aileron bellcrank and elevator tube with > > 3/8" aluminum rod with heim type rod ends. I drilled a 3/8" hole thru the > > aileron bellcrank and welded in a bushing for a 3/16" bolt. On the > elevator > > tube I made a 1" long clamp from 7/8X.058" tubing and one of the two clamp > > bolts is used to fasten the rod end. With the auto pilot off you can't > tell > > it is there. Jim C > > > > > > ----- Original Message ----- > > From: > > To: > > Sent: Thursday, May 20, 2004 8:30 PM > > Subject: Re: Tailwind-List: Autopilot > > > > > > > --> Tailwind-List message posted by: Mcculleyja@aol.com > > > > > > Jim, > > > > > > How do the servos attach to the bellcrank and to the elevator tube from > > the > > > standpoint of disengaging the servo? Is the de-coupling handled by some > > type > > > of electrically activated "clutch" or similar device within each servo? > > If the > > > disengagement mechanism failed to release can the servo be manually > > > overpowered? > > > > > > In a message dated 5/20/04 1:49:22 PM Eastern Daylight Time, > 168x@merr.com > > > writes: > > > > > > > The aileron servo connects to the left bellcrank and the > > > > pitch servo to the long elevator 3/4" tube. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > ________________________________ Message 3 _____________________________________ Time: 05:52:25 PM PST US From: "ROBERT MATTESON" Subject: Re: Tailwind-List: Autopilot --> Tailwind-List message posted by: "ROBERT MATTESON" Barnaby Wainfan had a good article on gear fairings in May's Kitplanes. According to him, a faired gear (leg and wheel) has less than 20% of the drag of an unfaired gear. The faired gear leg contributes the major portion while the pant only reduces the drag by about 8% in his example. ----- Original Message ----- From: Subject: Re: Tailwind-List: Autopilot > --> Tailwind-List message posted by: Mcculleyja@aol.com > > Jim, > > Do you have any flight measurements that show whether it's the gear leg > fairings or the wheel pants that provide the majority of the speed gain, and what > are the percentage numbers for each? I think I once saw something on this but > can't find it now. > > In a message dated 5/20/04 1:31:06 PM Eastern Daylight Time, 168x@merr.com > writes: > > > Get the fairings on, it makes a lot of difference. Jim C > > ________________________________ Message 4 _____________________________________ Time: 07:08:01 PM PST US From: Mcculleyja@aol.com Subject: Re: Tailwind-List: Autopilot --> Tailwind-List message posted by: Mcculleyja@aol.com Yes, I saw Wainfan's Kitplanes article but assumed that he was describing a generalized case that may not fit the Tailwind gear design per se. I was hoping some one (or several) Tailwinders had made some accurate speed measurements in the "before" versus "after" condition. The most useful info would be in terms of actual speed change rather than in percent of drag change. Anyone out there with such data? In a message dated 5/21/04 8:53:19 PM Eastern Daylight Time, ROBERTMATTESON@peoplepc.com writes: > Barnaby Wainfan had a good article on gear fairings in May's Kitplanes. > According to him, a faired gear (leg and wheel) has less than 20% of the > drag of an unfaired gear. The faired gear leg contributes the major portion > while the pant only reduces the drag by about 8% in his example. > ----- Original Message ----- > From: > To: > Sent: Thursday, May 20, 2004 9:39 PM > Subject: Re: Tailwind-List: Autopilot > > > > --> Tailwind-List message posted by: Mcculleyja@aol.com > > > > Jim, > > > > Do you have any flight measurements that show whether it's the gear leg > > fairings or the wheel pants that provide the majority of the speed gain, > and what > > are the percentage numbers for each? I think I once saw something on this > but > > can't find it now. > > ________________________________ Message 5 _____________________________________ Time: 09:03:15 PM PST US From: Brian Alley Subject: Tailwind-List: Cowling woes TailwindForum --> Tailwind-List message posted by: Brian Alley I came accross this link in the RV forum http://www.rv-8.com/Cowl.htm. It highlights the challenges in mounting a Sam James fiberglass cowl on a RV-8. This builder spent months on finishing the cowl to paint specs. The biggest complaint was pin holes and surface problems to repair. I hope most of these issues have been addressed by using polyester gel coat, carbon fiber and Coremat to reinforce the cowl. The bottom mold for the W-10 is now complete and will yeild it's first part early next week. I'll post pictures as soon as possible. ===== BRIAN ALLEY (N320WT) CARBON FIBER COMPOSITES 304-872-7938 shop 304-562-6800 home How are you going to win by a nose if you don't stick out your neck?