---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Wed 02/23/11: 10 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:27 AM - Trim tab slaving? () 2. 08:55 AM - Great ebay deal on Kroy K4100 shrink wrap label printer (Jim S) 3. 11:41 AM - Re: Trim tab slaving? (Glen Matejcek) 4. 02:22 PM - Re: Battery box being demanded (RayStL) 5. 02:42 PM - Re: Re: Battery box being demanded (Robert Borger) 6. 02:48 PM - Re: Re: Battery box being demanded (n801bh@netzero.com) 7. 07:14 PM - Re: Re: Trim tab slaving? (Jared Yates) 8. 07:43 PM - How should I use the AeroElectric Panel Grounding Hub? (jhclarkfl) 9. 10:14 PM - Re: How should I use the AeroElectric Panel Grounding Hub? (Tim Andres) 10. 11:04 PM - Re: How should I use the AeroElectric Panel Grounding Hub? (Robert L. Nuckolls, III) ________________________________ Message 1 _____________________________________ Time: 04:27:04 AM PST US From: Subject: AeroElectric-List: Trim tab slaving? 2/23/2011 Hello Andy, Is it possible to reduce the length of the lever arm between the pushrod end and the trim tab surface thereby gaining increased movement of the trim tab arc for each longitudinal movement of the pushrod? 'OC' Baker Says: "The best investment we can make is the time and effort to gather and understand knowledge." ========================================================== Time: 07:13:04 AM PST US From: " Dr. Andrew Elliott" Subject: AeroElectric-List: Trim tab slaving? Gang: On my 601XL, the elevator trim tab is not effective enough to trim out all control forces on a full-flap final when the CG is in the front half of the allowed range. Although the remaining elevator forces are light, I would like to be able to trim them away. The trim tab is inset on one side of the elevator, and takes the entire width, minus about 20 mm on each end. Servo is RAC One option would be to add another trim tab to the other side of the elevator. But to do that I would need some way to slave the two sides together. Does anyone have an idea about how to do that electronically without very high cost, or perhaps some way already exists and I haven't found it? (The elevator design doesn't allow for a simple mechanical connection.) Another option, of course, would to be to increase the size of the trim tab, either making it full width (probably not too effective - delta area <10%), or extending it aft 20-25 mm (probably would work, but ugly), or both. I might go that way, but thought I'd ask about the saving first. Thanks, Andy ________________________________ Message 2 _____________________________________ Time: 08:55:33 AM PST US From: Jim S Subject: AeroElectric-List: Great ebay deal on Kroy K4100 shrink wrap label printer I hope this is allowed on this list - great tool for wiring. Check out this new Kroy shrink wrap-label printer - purchased new for aircraft wiring p roject - never used --7 boxes of shrink wrap and 1 box of wire marker inc luded. - http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=160550371023&ssPageNam e=STRK:MESELX:IT - If this link doesn't work just go to ebay and search Kroy K4100.- Contact me through ebay or gjs55@yahoo.com Thanks. - Jim=0A=0A=0A ________________________________ Message 3 _____________________________________ Time: 11:41:25 AM PST US From: Glen Matejcek Subject: AeroElectric-List: Re: Trim tab slaving? Hi Andy- For what it's worth, I'd suggest there are a couple questions to answer prior to modifying your plane. You may have already run these issues to ground, and if so please disregard the first portion of this note. The first question is, is this trait common to the design? If it is not a common issue, I would suggest verifying your ASI operation / calibration and CG calculations prior to making any changes. The other observation is to be aware of the effect of increased up trim authority on go around performance. There is the possibility that using increased nose up pitch trim for a low power or power off gliding situation could lead to unexpectedly (startlingly?) high pitch up tendencies when go around power is applied. YMMV- >Time: 07:13:04 AM PST US >From: " Dr. Andrew Elliott" >Subject: AeroElectric-List: Trim tab slaving? > >Gang: > > >On my 601XL, the elevator trim tab is not effective enough to trim out all >control forces on a full-flap final when the CG is in the front half of the >allowed range. Although the remaining elevator forces are light, I would >like to be able to trim them away. The trim tab is inset on one side of the >elevator, and takes the entire width, minus about 20 mm on each end. Servo >is RAC > > >One option would be to add another trim tab to the other side of the >elevator. But to do that I would need some way to slave the two sides >together. Does anyone have an idea about how to do that electronically >without very high cost, or perhaps some way already exists and I haven't >found it? (The elevator design doesn't allow for a simple mechanical >connection.) > > >Another option, of course, would to be to increase the size of the trim tab, >either making it full width (probably not too effective - delta area <10%), >or extending it aft 20-25 mm (probably would work, but ugly), or both. I >might go that way, but thought I'd ask about the saving first. > > >Thanks, > >Andy > > >------------------------ > >Andy Elliott > >N601GE/Z601XL/TD/Corvair > >298 hrs since 11/08 > > Glen Matejcek ________________________________ Message 4 _____________________________________ Time: 02:22:10 PM PST US Subject: AeroElectric-List: Re: Battery box being demanded From: "RayStL" Here is an excerpt from an email I received yesterday... > Hello ray, > > After further review, Transport Canada has no objection that you continue operating aircraft registered C-GJRL in the present configuration. Yay. --ray :D -------- Ray St-Laurent 701/Pegastol wings/Suzuki engine Read this topic online here: http://forums.matronics.com/viewtopic.php?p=331962#331962 ________________________________ Message 5 _____________________________________ Time: 02:42:14 PM PST US Subject: Re: AeroElectric-List: Re: Battery box being demanded From: Robert Borger Ray, CONGRATS!! Bob Borger Europa Kit #A221 N914XL, XS Tri-Gear, Intercooled 914, Airmaster C/S Prop http://www.europaowners.org/forums/gallery2.php?g2_itemId=60232 http://www.biplaneforumgallery.com/index.php?cat=10046 Europa Flying! 3705 Lynchburg Dr. Corinth, TX 76208 Home: 940-497-2123 Cel: 817-992-1117 On Feb 23, 2011, at 16:18, RayStL wrote: > > Here is an excerpt from an email I received yesterday... > > >> Hello ray, >> >> After further review, Transport Canada has no objection that you continue operating aircraft registered C-GJRL in the present configuration. > > > Yay. > --ray :D > > -------- > Ray St-Laurent > 701/Pegastol wings/Suzuki engine ________________________________ Message 6 _____________________________________ Time: 02:48:53 PM PST US From: "n801bh@netzero.com" Subject: Re: AeroElectric-List: Re: Battery box being demanded Hmmmm. Transport Canada must read this list too. do not archive Ben Haas N801BH www.haaspowerair.com ---------- Original Message ---------- From: "RayStL" Subject: AeroElectric-List: Re: Battery box being demanded Here is an excerpt from an email I received yesterday... > Hello ray, > > After further review, Transport Canada has no objection that you conti nue operating aircraft registered C-GJRL in the present configuration. Yay. --ray :D -------- Ray St-Laurent 701/Pegastol wings/Suzuki engine Read this topic online here: http://forums.matronics.com/viewtopic.php?p=331962#331962 ======================== =========== ======================== =========== ======================== =========== ======================== =========== ____________________________________________________________ $65/Hr Job - 25 Openings Part-Time job ($20-$65/hr). Requirements: Home Internet Access http://thirdpartyoffers.netzero.net/TGL3241/4d658d525791f408f02st03vuc ________________________________ Message 7 _____________________________________ Time: 07:14:13 PM PST US Subject: Re: AeroElectric-List: Re: Trim tab slaving? From: Jared Yates Some airplanes also benefit from a little ballast in the baggage compartment. Yours might be a candidate for 25 pounds of kitty litter, which can also come in handy if you really need to pee. On Wed, Feb 23, 2011 at 2:37 PM, Glen Matejcek wrote: > aerobubba@earthlink.net> > > Hi Andy- > > For what it's worth, I'd suggest there are a couple questions to answer > prior to modifying your plane. You may have already run these issues to > ground, and if so please disregard the first portion of this note. The > first question is, is this trait common to the design? If it is not a > common issue, I would suggest verifying your ASI operation / calibration and > CG calculations prior to making any changes. > > The other observation is to be aware of the effect of increased up trim > authority on go around performance. There is the possibility that using > increased nose up pitch trim for a low power or power off gliding situation > could lead to unexpectedly (startlingly?) high pitch up tendencies when go > around power is applied. > > YMMV- > > > >Time: 07:13:04 AM PST US > >From: " Dr. Andrew Elliott" > >Subject: AeroElectric-List: Trim tab slaving? > > > >Gang: > > > > > >On my 601XL, the elevator trim tab is not effective enough to trim out all > >control forces on a full-flap final when the CG is in the front half of > the > >allowed range. Although the remaining elevator forces are light, I would > >like to be able to trim them away. The trim tab is inset on one side of > the > >elevator, and takes the entire width, minus about 20 mm on each end. > Servo > >is RAC > > > > > >One option would be to add another trim tab to the other side of the > >elevator. But to do that I would need some way to slave the two sides > >together. Does anyone have an idea about how to do that electronically > >without very high cost, or perhaps some way already exists and I haven't > >found it? (The elevator design doesn't allow for a simple mechanical > >connection.) > > > > > >Another option, of course, would to be to increase the size of the trim > tab, > >either making it full width (probably not too effective - delta area > <10%), > >or extending it aft 20-25 mm (probably would work, but ugly), or both. I > >might go that way, but thought I'd ask about the saving first. > > > > > >Thanks, > > > >Andy > > > > > >------------------------ > > > >Andy Elliott > > > >N601GE/Z601XL/TD/Corvair > > > >298 hrs since 11/08 > > > > > > > Glen Matejcek > > ________________________________ Message 8 _____________________________________ Time: 07:43:52 PM PST US Subject: AeroElectric-List: How should I use the AeroElectric Panel Grounding Hub? From: "jhclarkfl" I purchased the Panel Grounding Hub because it sounded like a great device and because it comes from Bob. But since getting the hub, I have read about concerns about grounding avionics through the hub because of current limitations of the individual pins and the potential of exceeding the current capability of the hub and the 4 or 5 20 ga ground wires run to the Forrest of Tabs. Something was also mentioned about all ground wires not being equal such as when a 16 or 18ga wire is split into two 20ga wires for insertion into the hub. I understand that low power grounds such as from LED Panel lights are a good choice for the hub. But I am installing a g430W, a SL-40, a GTX-327, a PS5000EX, Dual GRT HX Displays, the GRT Autopilot when it is released, a AFS Sport AoA, GRT EIS and a TruTrac Turn and Bank indicator. Some of these individually have fairly low current requirements but as a collective, the current is considerable. I need some advise from the experts as to what can be run to ground via the hub and what needs to be run directly to the Forrest of Tabs. I would optimally like to utilize the hub as much as possible merely to control the wire runs. Thanks for your help, -------- Jack Clark RV-8A Fuselage http://www.mykitlog.com/jackclark/ Read this topic online here: http://forums.matronics.com/viewtopic.php?p=331983#331983 ________________________________ Message 9 _____________________________________ Time: 10:14:37 PM PST US From: Tim Andres Subject: Re: AeroElectric-List: How should I use the AeroElectric Panel Grounding Hub? On 2/23/2011 7:41 PM, jhclarkfl wrote: > -I have read about concerns about grounding avionics through the hub because of current limitations of the individual pins and the potential of exceeding the current capability of the hub and the 4 or 5 20 ga ground wires run to the Forrest of Tabs. Something was also mentioned about all ground wires not being equal such as when a 16 or 18ga wire is split into two 20ga wires for insertion into the hub. > > > -------- > Jack Clark > RV-8A Fuselage > http://www.mykitlog.com/jackclark/ > > > I used Bob's Avionics ground bus and liked it. The only difficulty, and it's no big deal, is the Comm grounds. Both of mine (A210 and 430W) require 18 awg wire. So I just ganged the 18 awg wire into 2 pins with 20 awg wire using solder sleeves. No big deal, easy to do. Nothing else on my panel comes close to the limit for the pins except I do have an electric nose lift (10 amps max) that is not grounded yet. I have been debating putting this on the bus with 3 20awg wires/pins. Bob? HTH, Tim Andres ________________________________ Message 10 ____________________________________ Time: 11:04:27 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: How should I use the AeroElectric Panel Grounding Hub? At 10:41 PM 2/23/2011, you wrote: I purchased the Panel Grounding Hub because it sounded like a great device and because it comes from Bob. But since getting the hub, I have read about concerns about grounding avionics through the hub because of current limitations of the individual pins and the potential of exceeding the current capability of the hub and the 4 or 5 20 ga ground wires run to the Forrest of Tabs. So how much current do you anticipate your panel grounds will need? Something was also mentioned about all ground wires not being equal such as when a 16 or 18ga wire is split into two 20ga wires for insertion into the hub. Don't split stranding of wires. What items on the panel require 16 or 18 AWG ground wires and how much current is flowing in these wires? I understand that low power grounds such as from LED Panel lights are a good choice for the hub. But I am installing a g430W, a SL-40, a GTX-327, a PS5000EX, Dual GRT HX Displays, the GRT Autopilot when it is released, a AFS Sport AoA, GRT EIS and a TruTrac Turn and Bank indicator. Some of these individually have fairly low current requirements but as a collective, the current is considerable. Define "considerable". The current drains of all these devices is known . . . by somebody. The total current that can be loaded to 5x20AWG bundle to the forest of tabs is 25A . . . do you think you're going to push this? If necessary, you can use more leads to the firewall, or solder 12AWG wires to the bottom of the panel bus . . . but please do these kinds of things because you KNOW it's necessary/useful, not because lots of folks poured their own uncertainties into your worry bucket. Bob . . . ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-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/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-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.