---------------------------------------------------------- Zenith-List Digest Archive --- Total Messages Posted Thu 04/01/04: 37 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 01:53 AM - Re: UMHE...pztzle....gurble...plastic stuff? (Phil & Michele Miller) 2. 04:19 AM - Re: Zenith-List Digest: 92 Msgs - 03/31/04 (WOldejr@aol.com) 3. 05:00 AM - Re: skydat (Scott Laughlin) 4. 05:52 AM - Re: Zenith-List Digest: 92 Msgs - 03/31/04 (Grant Corriveau) 5. 06:07 AM - subject line (Jim and Lucy) 6. 06:19 AM - Re: Re: Savannah vs CH701 -- punched holes (Larry Martin) 7. 06:24 AM - Re: Fuel selectors (Jeff Page) 8. 06:33 AM - Re: Zenith-List Digest: 92 Msgs - 03/31/04 (Grant Corriveau) 9. 07:45 AM - Re: Fuel tanks (HINDE,FRANK (HP-Corvallis,ex1)) 10. 07:45 AM - Re: Re: Savannah vs CH701 (Garrou, Douglas) 11. 07:46 AM - Re: Dead Horse (HINDE,FRANK (HP-Corvallis,ex1)) 12. 07:49 AM - Re: Fuel tanks (HINDE,FRANK (HP-Corvallis,ex1)) 13. 07:53 AM - Re: Fuel tanks (bad luck?) (HINDE,FRANK (HP-Corvallis,ex1)) 14. 07:55 AM - Re: Re: Physics of Vapour lock (HINDE,FRANK (HP-Corvallis,ex1)) 15. 08:19 AM - Re: Plastic-protection (Dabusmith@aol.com) 16. 08:24 AM - Is the Savannah a copy of the 701??? (Thomas F Marson) 17. 08:55 AM - Re: Fuel selectors (Leo J. Corbalis) 18. 10:26 AM - Re: Is the Savannah a copy of the 701??? (Gordon Duke) 19. 10:50 AM - Re: Re: Is the Savannah a copy of the 701??? (jnbolding1) 20. 11:18 AM - List etiquette (Jeff Small) 21. 11:50 AM - facet pump (Jim and Lucy) 22. 12:22 PM - Re: facet pump (HINDE,FRANK (HP-Corvallis,ex1)) 23. 01:41 PM - Re: facet pump (Filtering gasoline) (Gary Gower) 24. 02:09 PM - Re: facet pump (Thomas F Marson) 25. 02:14 PM - Re: Re: Physics of Vapour lock (Thomas F Marson) 26. 02:22 PM - Re: Re: Is the Savannah a copy of the 701??? (Thomas F Marson) 27. 02:31 PM - Re: facet pump (Bryan Martin) 28. 02:55 PM - Re: Re: Physics of Vapour lock (HINDE,FRANK (HP-Corvallis,ex1)) 29. 03:14 PM - Plastic protection, fuel pumps and header tanks (Christoph Weber) 30. 03:46 PM - Re: Re: Is the Savannah a copy of the 701??? (Cy Galley) 31. 04:09 PM - Re: Hoses & Pumps (Wayne McIntosh) 32. 04:17 PM - Savannah vs 701 (Stephen Johnston) 33. 05:02 PM - Re: Re: Is the Savannah a copy of the 701??? (jnbolding1) 34. 06:24 PM - Re: Fuel tanks (Tim & Diane Shankland) 35. 07:26 PM - Dynon Avionics EFIS-D10 (Larry Martin) 36. 08:16 PM - Re: Microair 760 radio (Ron DeWees) 37. 09:31 PM - Sebastian Heintz interview (Jim and Lucy) ________________________________ Message 1 _____________________________________ Time: 01:53:56 AM PST US From: "Phil & Michele Miller" Subject: RE: Zenith-List: UMHE...pztzle....gurble...plastic stuff? --> Zenith-List message posted by: "Phil & Michele Miller" Hi, Grant, I've seen all the replies you've had to this post and I can't for the life of me understand why everyone makes such a simple thing so difficult (if I'm missing something here, I apologise in advance). I suggest that you do what I did when I decided to rebuild my 701 nose gear - buy the bits you want from ZAC!!!. In upgrading mine to the latest specs I simply ordered the bearings from ZAC and they arrived a few days later (correct size, thickness and 2 inch hole already machined). Didn't cost much and saved a hell of a lot of shagging about. Cheers, Phil M -----Original Message----- From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of Grant Corriveau Subject: Zenith-List: UMHE...pztzle....gurble...plastic stuff? Does someone remember offhand how big and thick a slice is needed to do all the top and lower gear strut bearings? And a good source? ________________________________ Message 2 _____________________________________ Time: 04:19:12 AM PST US From: WOldejr@aol.com Subject: Zenith-List: Re: Zenith-List Digest: 92 Msgs - 03/31/04 --> Zenith-List message posted by: WOldejr@aol.com Greetings All: Please accept this in the spirit in which it is intended. As the number of participants in this discussion group grows it is becoming increasingly cumbesome to have to sort through all the posts reposted and reposted again with replys. By all means include the subject line, and if necessary a few words gemain to the topic in your reply, but for all our sake, please stop including the entire original post, over and over again. My scrolling finger is getting tired...sigh! Not to mention taking up disk space with duplicate information. My Deepest respect to all Ted ________________________________ Message 3 _____________________________________ Time: 05:00:47 AM PST US From: "Scott Laughlin" Subject: RE: Zenith-List: skydat --> Zenith-List message posted by: "Scott Laughlin" Reply to: "Has anybody tried this yet?: http://www.sportflyingshop.com/Instr/Stratomaster/Ultra/ultra.html" Bill: I saw one Tuesday in a Sonex. The owner said he liked it a lot. It was a clean installation and took care of all instrumentation including engine monitoring. I plan to install one in my airplane. Scott Laughlin www.cooknwithgas.com Get reliable access on MSN 9 Dial-up. 3 months for the price of 1! (Limited-time offer) ________________________________ Message 4 _____________________________________ Time: 05:52:24 AM PST US Subject: Zenith-List: Re: Zenith-List Digest: 92 Msgs - 03/31/04 From: Grant Corriveau --> Zenith-List message posted by: Grant Corriveau > Are both top and bottom bearings wearing or just the bottom ones? > > Dan Hi Dan, It's mainly the bottom bearing -- but the top may be slightly as well. I looked at the main gear more closely yesterday and they seem fine... maybe also a function of my heavier engine and so more 'working' in the nose strut during taxii? Grant ________________________________ Message 5 _____________________________________ Time: 06:07:08 AM PST US From: Jim and Lucy Subject: Zenith-List: subject line --> Zenith-List message posted by: Jim and Lucy At 07:18 AM 4/1/2004 -0500, you wrote: >--> Zenith-List message posted by: WOldejr@aol.com > > By all means include the subject line, Even better is if you reply to a digest message make the subject something to do with what you want to say. Subject: Zenith-List: Re: Zenith-List Digest: 92 Msgs - 03/31/04 This subject means nothing and stands a good chance of getting deleted without being read. Do not archive Jim Pollard Merlin Ont ________________________________ Message 6 _____________________________________ Time: 06:19:10 AM PST US From: "Larry Martin" Subject: Re: Zenith-List: RE: Savannah vs CH701 -- punched holes --> Zenith-List message posted by: "Larry Martin" Even with punched holes, aren't these holes just pilot holes? You still have to drill them to the needed size. I really don't see a problem here. It just saves a lot of measuring and makes for nice straight rivet lines. do not archive ----- Original Message ----- From: "Thomas F Marson" Subject: Re: Zenith-List: RE: Savannah vs CH701 -- punched holes > --> Zenith-List message posted by: "Thomas F Marson" > > Dont know if Vans RVs are punched or drilled but they are "preholed". > Thousands of Kits. Tom > ----- Original Message ----- > From: "Gordon Duke" > To: "zenith list" > Subject: Zenith-List: RE: Savannah vs CH701 -- punched holes > > > > --> Zenith-List message posted by: "Gordon Duke" > > > > Hi: > > > > On the issue of punched holes, a friend who took a metal-working class > > tells me that the instructor specifically said not to punch aluminum for > > aircraft structural parts. His explanation was that (1) punching stresses > > the metal in ways that drilling does not and (2) punching may create > > micro-cracks that could propagate and these cannot be deburred out on > > the front side of the punched hole and (3) the back side of the punched > > hole should be deburred for the same reasons as a drilled hole. > > > > == Gordon Duke > > St. Paul, MN USA > > 701 rudder > > > > --> Zenith-List message posted by: "Rick Morawski" > > > > > > Hope I can have some meaningful input into this thread. > > I built a 701 over three years (1300+ hours) and then pranged it after > just > > 56 hours flying. > > I didn't want to go through all that building again so I bought a Savannah > > ( I call it a Savannoh one) > > I have completed all assembly (rivetting etc) after just 132 hours and > > should be ready to paint in a few more hours work. How?? > > All (99%)the parts are made and accurately. You just assemble. Mostly you > > dont even have to deburr because the holes are punched not drilled, just > > whack em together and rivet. For example, one wing in a weekend, all slats > > in a day, all ailerons in a day, horizontal stab in a day, rear fuse in a > > day. > > The metal is stamped and looks to come from the same mills as the ZAC > parts > > and most parts are beautifully cut and finished. > > There are some small but nice improvements which 701 scratch builders > could > > use. (Could they sue if you copied?) and I think it is every bit as strong > > if not more so. Mine is legal for 520kg MTOW. > > I can't say anything about flying qualities yet as I havent flown but will > > let you know when it happens > > I havn't grappled with the moral/ ethical question - I just want to fly > > sooner than later. > > Rick Morawski > > morawski@highway1.com.au > > > > > > --- ________________________________ Message 7 _____________________________________ Time: 06:24:26 AM PST US From: Jeff Page Subject: Re: Zenith-List: Fuel selectors --> Zenith-List message posted by: Jeff Page Tom, Thank you for taking the time to some-up the fuel thread. I'm relatively new to the list, so the topic doesn't feel so beat to death for me, and your post helped me to better understand the discussion. -Jeff Page in Vermont (Just getting started on a 601XL) >>>> SNIP from Toms post > Sorry, it is not either/or there are several > subjects that have been beat to > death. > > Such as: > > 1. Use a fuel selector valve when using two wing > tanks? > 1a. How about using two fuel pumps and a selector > valve also. (dont see a > reason for the selector valve). Switching pumps will > control fuel flow. > >>>> SNIP Do not archive __________________________________ http://promotions.yahoo.com/design_giveaway/ ________________________________ Message 8 _____________________________________ Time: 06:33:56 AM PST US Subject: Zenith-List: Re: Zenith-List Digest: 92 Msgs - 03/31/04 From: Grant Corriveau --> Zenith-List message posted by: Grant Corriveau should be able to read about it here: http://www.worldtranssiberia.com/index1.php > Hey Grant, > > What's the story about the "STOL 701 that flew 3/4 > of the way around the world"? Why is it parked at your strip? > > Dan ________________________________ Message 9 _____________________________________ Time: 07:45:02 AM PST US From: "HINDE,FRANK (HP-Corvallis,ex1)" Subject: RE: Zenith-List: Fuel tanks --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" Definatly on the discharge (outlet) side...See the discussion about not sucking fuel thru restrictions...Get a spring loaded check (mine have 0.3 psi springs) absolute max should be 1 psi spring. The springs positively prevent backflow but you lose the spring pressure in the forward direction. I thought about the crowbar circuit but decided against it...not sure I can remember why?..Probably cos I've never personally heard of an alternator failing that way. Frank -----Original Message----- From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of Joemotis@aol.com Subject: Re: Zenith-List: Fuel tanks --> Zenith-List message posted by: Joemotis@aol.com Frank How about the "Crowbar" O.V . protection mentioned in the Aeroelectric Connection? Also where would one place checkvalves to supplement the ones on the Facet Pumps? Intake or the outlet side? At the pump? Joe Motis 601 XL working on wings advertising on the Matronics Forums. ________________________________ Message 10 ____________________________________ Time: 07:45:20 AM PST US Subject: Re: Zenith-List: RE: Savannah vs CH701 From: "Garrou, Douglas" --> Zenith-List message posted by: "Garrou, Douglas" Free advice from the flying lawyer (and worth what you paid, cuz this isn't exactly my area....) Larry has this basically right, although of course I will pick nits. Under U.S. law, generally "copyright" is a noun, rather than a verb. The person who draws or writes something original automatically has "the copyright," quite literally the right to make copies (and, crucially, "derivative" works), unless that person has made other arrangements (i.e., is creating a work for hire, has assigned the copyright to someone else, etc.). This is true whether or not you put a little (c) on it, in fact. You can also register a copyright -- some people rather loosely refer to this as "copyrighting" -- but that really doesn't matter much for our purposes. So, we can probably safely assume that Zenith or Chris Heintz has the copyright in the plans for the 701. Now if somebody sat down and copied those plans, or used those plans to make his own plans -- i.e., if somebody created plans that were a derivative work -- you would likely be looking at a copyright violation. Sort of like if I wrote a book using the Superman character, I'd be making a derivative work and violating DC Comic's copyright in the Superman story (unless my book was a satire, or fell into some other exception). There might well be trademark issues there also. Meanwhile, I am fairly certain of the following: unless there is a patent at issue (and I'm not yet aware of any here), you can reverse engineer someone else's product and then sell your own product just like it. For example, absent a patent, I can go out, take measurements of a Lexus, and build my own car just like it. I can't use copies of the Lexus plans to do it (a copyright issue), I can't put a Lexus logo on it (a trademark issue), and there may even be some aspects of the Lexus that I can't replicate because they constitute "trade dress" (sort of like the shape of a Coke bottle), but aside from that, I can build a Lexus. By the way, that "absent a patent" condition is a BIG one. In real life there are probably about 6 zillion patents covering all sorts of stuff in a Lexus, so you would be in DEEP patent doo-doo if you tried this stunt. Anyway, my long-winded point is that the Savannah may well be perfectly legal even if it is *exactly* like the 701. The ethical issues are another matter, and I have definite views about that, but I think I have the law right. How many times you can use legit 701 plans to build a 701 is also a separate issue. It may be limited by your contract with ZAC (if any), so I won't venture an opinion there. Cheers Doug G. -----Original Message---- Time: 07:34:16 PM PST US From: "Larry Martin" Subject: Re: Zenith-List: RE: Savannah vs CH701 --> Zenith-List message posted by: "Larry Martin" You are correct, the plans are copyrighted. Which means you can't copy the plans without their permission. Has nothing to do with how many times or what you can use them for. I bought the plans with the rights to use them as I please except to copy or republish without ZAC's permission. I don't remember any contract stipulating the number of times I could use the plans. I have no idea how many parts are interchangeable. With the pegastol wings, there are none that I know of. I looked at the Savanna real hard and there are a lot of differences/improvements, so I really doubt too many parts are interchangeable. Do not archive ----- Original Message ----- From: "Gordon Duke" Subject: Zenith-List: RE: Savannah vs CH701 > --> Zenith-List message posted by: "Gordon Duke" > > I disagree. I am certain that the plans are copyrighted. There are > probably no patents. However, you cannot build more than one airplane > from a set of plans without violating the contract, the law and ethics. > So, a manufacturing company cannot (in my opinion) obtain a copy of > the plans for a CH701 and manufacture more than one completed plane or > one kit. > > The issue in my mind is how many parts are identical in the two planes. > If the answer is zero, then the Savannah is a legitimate plane. > > Can someone give me the answer as to how many of the parts of the > two planes are interchangeable? Thanks. > > == Gordon Duke > St. Paul, MN USA > 701 rudder > > --> Zenith-List message posted by: "Larry Martin" > > >I guess it doesn't really matter, because I don't remember seeing any > >copyright or design patents by Zenith. So it's open season, and Zenith or > >anyone else doesn't have a right to bitch. I looked at the Savannah very > >hard before I bought my 701 kit. There are some significant differences, > > ________________________________ Message 11 ____________________________________ Time: 07:46:48 AM PST US From: "HINDE,FRANK (HP-Corvallis,ex1)" Subject: RE: Zenith-List: Dead Horse --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" Yup it does..Not ideal but not as bad as sucking up frim a low wing tank...I would put a single pump at the discharge to the tank. Frank Do not archive -----Original Message----- From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of ZSMITH3rd@aol.com Subject: Zenith-List: Dead Horse --> Zenith-List message posted by: ZSMITH3rd@aol.com The fuel tank, vapor lock, selector valve horse has been badly mauled. Beaten to death is more correct. However, is there anyone on the list who has built and flown a 701 with only the firewall-mounted "header tank" as in the earlier plans BEFORE the wing tanks became either standard or an option? Reason for the question is that the bottom of the tank, and therefore the gascolator, is below the bottom of the engine. This arrangement would then depend on the Rotax engine-mounted fuel pump being able to suck fuel uphill. This is the method ZAC shows on plans up to about 2001. Comments solicited. Thanks, Zed Smith/801/R912/92.xxx% do not archive advertising on the Matronics Forums. ________________________________ Message 12 ____________________________________ Time: 07:49:27 AM PST US From: "HINDE,FRANK (HP-Corvallis,ex1)" Subject: RE: Zenith-List: Fuel tanks --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" Like I said I have two batteries seperated by a diode so if the alternator goes away I have a few hours left. Alts usually fail by going dead rather than going O.V....At least that's been my experience...I'm more mechanical than electrical though. FRank -----Original Message----- From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of Dave Pepper Subject: RE: Zenith-List: Fuel tanks --> Zenith-List message posted by: "Dave Pepper" --> One alternator and one voltage regulator? and no engine pump or gravity feed system! Trees! Even airliners have have total electrical failures, but engines keep running because they suck fuel from the tanks. A total electrical failure is not beyond the realm of possibilities. Dave > > Well that requires two independent failures which I do not plan for in > any of my critical systems...Think about it, you have two independent > ignition systems...not three, correct? > > The reason the pumps are independent is they have two different > sources of fuel (one per each tank) and they are driven by two > independent batteries...Both charged by the same alternator but > seperated by a diode. > > I make sure there are no potential interconnecting points between the > two electrical systems such as any changeover switches...evertyhing > has its own > on/off switch > > About the only thing that can go wrong as far as I can see is if the > alternator voltage regulator goes whacko and over volts > everything....couldn't find good solution for that one. > > Frank > > advertising on the Matronics Forums. ________________________________ Message 13 ____________________________________ Time: 07:53:48 AM PST US From: "HINDE,FRANK (HP-Corvallis,ex1)" Subject: RE: Zenith-List: Fuel tanks (bad luck?) --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" Yes but its not that simple Dave....My electrical system is completely redundant apart from an O.V. situation.The crowbar circuit would presumably fix this if you so desire..My main batt/alt could short to ground catch fire and melt the plane but the other pump will still keep the engine running for over an hour from the second battery, which of course also runs the second ignition system... Frank -----Original Message----- From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of Dave Pepper Subject: RE: Zenith-List: Fuel tanks (bad luck?) --> Zenith-List message posted by: "Dave Pepper" --> Gary, Think total electrical system failure. And think that if one pump can fail, then so can the other one.....and it always happens in flight. > > I think first our wife will keep us home working on mantainance or a > new volcano below our fight path will make explosion, this will be bad > luck :-) :-) :-) > > Then aviation engines will require 3 magnetos (4 will be better, one > as back up of each magneto)... > > I am sure each pump has his own fuse and switch, and is tested every > preflight, so if one fails I am sure nobody will dare to fly the plane > until it is changed. One pump working (if one pump fails in flight) > will take you safetly to the next alternate airstip in your map or > GPS... Never wait until the tank is completly empty to change > tanks... > > Saludos > Gary Gower. > > PLEASE Do not archive. > > > --- Dave Pepper wrote: > > --> Zenith-List message posted by: "Dave Pepper" > > > > > > Frank, > > > > What will you do if you lose both wing fuel pumps, and you don't > > have an engine pump as a backup? Don't you think the trees will be > > getting bigger > > and bigger? > > > > > > > No! it's far better to be deposited (fuel) all around you...or if > > it's in > > a > > > compromised wing tank with a collapsed gear running into the > > cockpit > > through > > > the lightening holes. Face it, if you crash your going to die > > because > > the G > > > loads are going to get you. If you land, you may bend your plane > > but > > > survive. > > > > > > And no thanks on dumping the fuel pump, I'll keep my engine driven > > fuel > > pump > > > attached right where rotax designed it to be. > > > Do not archive > > > > > > > > > > > > > > > > > > > > > > > > > __________________________________ > http://promotions.yahoo.com/design_giveaway/ > > advertising on the Matronics Forums. ________________________________ Message 14 ____________________________________ Time: 07:55:51 AM PST US From: "HINDE,FRANK (HP-Corvallis,ex1)" Subject: RE: Zenith-List: Re: Physics of Vapour lock --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" Or even a cold line with a plugged filter, restrictive check valve are still potential sources of vapour lock. Frank Do not archive -----Original Message----- From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of Thomas F Marson Subject: Re: Zenith-List: Re: Physics of Vapour lock --> Zenith-List message posted by: "Thomas F Marson" --> Vapor forming between the final pump and the carb would just move up the Carb bowl and percolate out. No Problem there. A hot line between the tank and the pump is the source of potiential vapor lock. ----- Original Message ----- From: "Bob Miller" Subject: Re: Zenith-List: Re: Physics of Vapour lock > --> Zenith-List message posted by: "Bob Miller" > > Yep, there is a section like that, and the electric pump sucks fuel > downstream of the gascolator in the engine compartment. But where > would vapour form in this system upstream from the elec pump? And if > it did form, > wouldn't it move upward to the tank? > Bob > > ----- Original Message ----- > From: "Thomas F Marson" > To: > Subject: Re: Zenith-List: Re: Physics of Vapour lock > > > > --> Zenith-List message posted by: "Thomas F Marson" > > > > > Probably is eliminated ---- but not if you have a section of fuel > > line between the header tank and the electric pump AND IF THAT LINE > > IS EXPOSED > TO > > HOT ENGINE COMPARTMENT TEMPS. Tom > > ----- Original Message ----- > > From: "Bob Miller" > > To: > > Subject: Zenith-List: Re: Physics of Vapour lock > > > > > > > --> Zenith-List message posted by: "Bob Miller" > > > > > > > > Frank, > > > Thanks for bringing us back to the elementals. I have a 16 gallon > header > > > tank only, with an electric fuel pump parallel to the mechanical > > > pump. Since the electric pump is below the header tank, does this > > > mean that > > vapour > > > lock is eliminated or overcome when this pump is on? > > > Bob > > > ----- > > > > > > > > > > > > advertising on the Matronics Forums. ________________________________ Message 15 ____________________________________ Time: 08:19:35 AM PST US From: Dabusmith@aol.com Subject: Re: Zenith-List: Plastic-protection --> Zenith-List message posted by: Dabusmith@aol.com Chris It is easier to use a push broom handle. Just lay the handle across the sheet and turn the broom end like a crank. When all the plastic has been rolled up on the handle, take a pocket knife and slice it off. I don't think the plastic wrap will protect against corrosion. I have seen terrible corrosion on aluminum with the plastic left on too long. Dave Smith N701XL 137 Hr. ________________________________ Message 16 ____________________________________ Time: 08:24:45 AM PST US From: "Thomas F Marson" Subject: Zenith-List: Is the Savannah a copy of the 701??? --> Zenith-List message posted by: "Thomas F Marson" This has been beaten about a lot the last few days. As ZAC shows on their website several different European manufactures are building airplanes to the general outline of the 701.. The pictures leave no doubt of that. ( An aside --- there have been many "knock offs" of he Kitfox general outline too in the USA and most come from Idaho, Oregon Washington area) In fact the Kitfox was a knock off of the Avid. In each case the planes are different considerably but they do look a lot alike. Like several kids from the same family resemble each other they are different. Back to 701 / Savannah. The two airplanes have a general outline similarity and in many ways it appears share a lot of the same dimensions. The changes (improvements) made in the Savannah are really quite significant. 1. VISUAL IMPROVEMENTS. After considering the 701 design for many years as a potiential but reluctant customer, the 701 to many has many unattractive visual features, the lowered cabin/raised wings being one, and the whole tail assembly the other. I am not a lurker, but a doer. I have built 3 airplanes since I first considered the 701. I am still attracted to it and repulsed at the same time. The Savannah has corrected many of the design elements that have alway held me back. 2. PRACTICAL BUILERS IMPROVEMENTS. After building 3 planes, one being an RV 6, with its 14,000 rivets, holes, deburring, bucking etc, and at age 74 I dont have the will to build another such kit. The Savannah comes along and from what it appears has done the "heavy lifting" for me on the endless detail. 3. PERFORMANCE IN THE AIR The takeoff/landing performance is the real strong point of the 701. Its in air cross country speed is on the low side if XC is important, to me, it is. Sometimes I just want to be in the air flying low and slow and sometimes I want to go somewhere. The Savannah appears to claim the same low takeoff speeds but with higher tops speeds. Are these claims factual? Only someone who as flown both and recorded factual data can say. 4. SAFETY OF THE DESIGN. Only someone who has used a critical experienced eye will be able to evaluate that. That person must be completely familiar with the 701 and the Savannah. Not just on an overall level but on a fitting by fitting shape and thickness but strength of materials view. Tom in Wisconsin. ________________________________ Message 17 ____________________________________ Time: 08:55:58 AM PST US From: "Leo J. Corbalis" Subject: Re: Zenith-List: Fuel selectors --> Zenith-List message posted by: "Leo J. Corbalis" I have a semi-idiotproof system on my 601HDS. I have the 16 gal main tank and 2 7.5 gal wing tanks. I have a check valve on the outlet of the main tank, 2 Facet pumps on the wing tanks feeding a tee to a transfer valve to another tee below the main tank check valve. In flight, all I do is flip the DPDT center OFF switch to aux tanks and the pumps alternatly feed directly to the engine. The other side of the DPDT turns on anothe Facet pump in paralell with the engine pump.( I can't put the wing and boost pumps ON at the same time which might flood the carbs.) A timer circuit switches the wing tank pumps about every 8 minutes. It also operates a red/green LED to show which tank is feeding. The LED blinks if the tank is empty and then switches back to the other tank. I start the engine, switch on the aux tanks, open the valve and go fly until I notice the blinking LED. Then switch off and close the valve.There some GOTCHYA's as it is only semi-idiot proof (they keep making better idiots) but you wont hear the sound of SILENCE until there's no fuel left. You MUST keep the transfer valve closed when the wing tanks are not being used. I may put in an electric valve. . I am writing an article for KITPLANES laying out both the electronic and mechanical details. Leo Corbalis do not archive ________________________________ Message 18 ____________________________________ Time: 10:26:28 AM PST US From: "Gordon Duke" Subject: Zenith-List: RE: Is the Savannah a copy of the 701??? --> Zenith-List message posted by: "Gordon Duke" Yes, you may reverse engineer under some conditions. Software, for example, has specific rules about those conditions. Two more airplane examples, Aviat admits that they were unable to obtain the type certificate for the super Cub, so they designed a plane, the Husky, with the same functionality. No interchangeable parts, new design, similar look, flying prototype, did not copy the blueprints for the cub or take measurements. Throp builders tell me that the first Van RV series were very similar to the T-18, but again, no interchangeable parts, did not copy blueprints, new design even if similar, built a prototype. I am unaware of anyone who has accused Aviat or Van of copying their designs. I am certain that there are no patentable aspects of the CH701. I will venture the opinion that one set of plans allows one authorized airplane and no more. Interestingly, if you are an authorized builder and your plane is destroyed, you may build a new plane without an second authorization. That is, the rights to one plan do not expire if the physical airplane is destroyed. == Gordon Duke St. Paul, MN USA CH701 rudder and wishing for more Is the Savannah a copy of the 701??? --> Zenith-List message posted by: "Thomas F Marson" < < Subject: Re: Zenith-List: RE: Is the Savannah a copy of the 701??? --> Zenith-List message posted by: "jnbolding1" >Throp builders tell me that the first Van RV series were very similar to the >T-18, but again, no interchangeable parts, did not copy blueprints, new >design even if similar, built a prototype. > >I am unaware of anyone who has accused Aviat or Van of copying their >designs. My next door neighbor has built two t-18s, I built an Rv-3 and the ONLY RV-1 is two doors down from us. I can emphatically state that anyone that states that those airplanes share more than both being low wing and made from aluminum doesn't have a good grasp on the situation. LOW&SLOW John ________________________________ Message 20 ____________________________________ Time: 11:18:32 AM PST US From: "Jeff Small" Subject: Zenith-List: List etiquette Seal-Send-Time: Thu, 1 Apr 2004 14:21:04 -0500 --> Zenith-List message posted by: "Jeff Small" On April 2nd our host Mr. Dralle will send out his monthly reminder about etiquette on the various Matronics lists. It's obvious from the onslaught of omissions of those guidelines over the past two days that many of you have never read them. Escapes me how some folks can write but not read. do not archive ________________________________ Message 21 ____________________________________ Time: 11:50:06 AM PST US From: Jim and Lucy Subject: Zenith-List: facet pump --> Zenith-List message posted by: Jim and Lucy Someone may have some experience with this . Are the finger strainers in the tank adequate for filtering the fuel good enough to protect the facet pump. Facet instructions say there should be some sort of filter before the pump. I am hoping I can get away with this because I want any extra filters after my gascolator. thanks Jim Pollard ________________________________ Message 22 ____________________________________ Time: 12:22:26 PM PST US From: "HINDE,FRANK (HP-Corvallis,ex1)" Subject: RE: Zenith-List: facet pump --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" Yup Frank Do not archive -----Original Message----- From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of Jim and Lucy Subject: Zenith-List: facet pump --> Zenith-List message posted by: Jim and Lucy Someone may have some experience with this . Are the finger strainers in the tank adequate for filtering the fuel good enough to protect the facet pump. Facet instructions say there should be some sort of filter before the pump. I am hoping I can get away with this because I want any extra filters after my gascolator. thanks Jim Pollard advertising on the Matronics Forums. ________________________________ Message 23 ____________________________________ Time: 01:41:23 PM PST US From: Gary Gower Subject: Re: Zenith-List: facet pump (Filtering gasoline) --> Zenith-List message posted by: Gary Gower Just one idea we learned from the old pilots here, We always fill the tank(s) of our planes and UL's using a funnel with a "Chamois" (dont know the name in english, probably the same) is a piece of deer leather cloth, this keeps all water dirt and debris from entering the tank. A plastic foldable funnel (with a Chamois of course) travels with the plane in XCounties. Saludos Gary Gower. --- Jim and Lucy wrote: > --> Zenith-List message posted by: Jim and Lucy > > Someone may have some experience with this . > Are the finger strainers in the tank adequate for > filtering the fuel good enough to protect the facet > pump. Facet instructions say there should be some > sort of filter before the pump. > I am hoping I can get away with this because > I want any extra filters after my gascolator. > > thanks > > Jim Pollard __________________________________ http://promotions.yahoo.com/design_giveaway/ ________________________________ Message 24 ____________________________________ Time: 02:09:53 PM PST US From: "Thomas F Marson" Subject: Re: Zenith-List: facet pump --> Zenith-List message posted by: "Thomas F Marson" The normal fingerstrainer is to keep bugs and leaves etc from plugging up the bottom opening of the fuel tank. I am almost certain that it would not qualify for " a filter" for the Facet pump. For the record I have dual parallel Facet pumps on my plane and have no other filter. I have had no pump failures in 8 years and 350 hours. Tom In Wis ----- Original Message ----- From: "Jim and Lucy" Subject: Zenith-List: facet pump > --> Zenith-List message posted by: Jim and Lucy > > Someone may have some experience with this . > Are the finger strainers in the tank adequate for > ________________________________ Message 25 ____________________________________ Time: 02:14:12 PM PST US From: "Thomas F Marson" Subject: Re: Zenith-List: Re: Physics of Vapour lock --> Zenith-List message posted by: "Thomas F Marson" Yes to the plugged filter or restrictive check valve. However the plugged filter was going to bring you to a stop soon any way. Tom in Wis -----> Or even a cold line with a plugged filter, restrictive check valve are still > potential sources of vapour lock. > > ________________________________ Message 26 ____________________________________ Time: 02:22:27 PM PST US From: "Thomas F Marson" Subject: Re: Zenith-List: RE: Is the Savannah a copy of the 701??? --> Zenith-List message posted by: "Thomas F Marson" Hey, John you are so right. Isn't amazing who many time you hear someone (or see someone ) say something without the slightes modicum of knowledge and say it with a straight face as if the actually knew something. Tom in Wis. ----- > > > >Throp builders tell me that the first Van RV series were very similar to the > >T-18, but again, no interchangeable parts, did not copy blueprints, new > >design even if similar, built a prototype. > > > >I am unaware of anyone who has accused Aviat or Van of copying their > >designs. > > My next door neighbor has built two t-18s, I built an Rv-3 and the ONLY RV-1 is two doors down from us. I can emphatically state that anyone that states that those airplanes share more than both being low wing and made from aluminum doesn't have a good grasp on the situation. LOW&SLOW John > > ________________________________ Message 27 ____________________________________ Time: 02:31:26 PM PST US Subject: Re: Zenith-List: facet pump From: Bryan Martin --> Zenith-List message posted by: Bryan Martin on 4/1/04 2:49 PM, Jim and Lucy at jpollard@mnsi.net wrote: > --> Zenith-List message posted by: Jim and Lucy > > Are the finger strainers in the tank adequate for > filtering the fuel good enough to protect the facet > pump. Yes. -- Bryan Martin N61BM, CH 601 XL, Stratus Subaru. Airframe construction complete. Panel and engine installed. Nearly done. do not archive. ________________________________ Message 28 ____________________________________ Time: 02:55:23 PM PST US From: "HINDE,FRANK (HP-Corvallis,ex1)" Subject: RE: Zenith-List: Re: Physics of Vapour lock --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" Yes but a filter plug on the discharge of a pump will show up as a gradual decrease in fuel pressure. The engine will keep running even at zero pressure at the carb. If you put the filter before the pump it will show up as a sudden flow stoppage (and therfore engine stoppage) without appreciable warning. In other words the negative pressure on the downstream side of the filter will degrade (as the filter blocks) until the suction exceeds the vapour pressure of the fuel...Then you get instant vapour lock. Just put the screen (in the tank) before the pump, nothing else. Frank Do not archive -----Original Message----- From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of Thomas F Marson Subject: Re: Zenith-List: Re: Physics of Vapour lock --> Zenith-List message posted by: "Thomas F Marson" --> Yes to the plugged filter or restrictive check valve. However the plugged filter was going to bring you to a stop soon any way. Tom in Wis -----> Or even a cold line with a plugged filter, restrictive check -----> valve are still > potential sources of vapour lock. > > advertising on the Matronics Forums. ________________________________ Message 29 ____________________________________ Time: 03:14:13 PM PST US From: "Christoph Weber" Subject: Zenith-List: Plastic protection, fuel pumps and header tanks --> Zenith-List message posted by: "Christoph Weber" Well, I sat down in front of the computer on April 1st and decided to write something silly, didn't expect it to pop up on the digest of March 31. This international dateline in the pacific stuffs things up, on the other hand here in Australia the new year is still nice and fresh when it comes our way, while it is sort of handed down around 3/4 of the planet by the time it hits the USA ;-) But I sure hate that plastic stuff, especially on the wing skins! In regard to the neverending fuel pump discussion, my last 601HD with Subaru had leading edge tanks, no header, a pump in each wing next to the tank, seperate fuses for those pumps. As a backup a master pump, electric, hooked up to the ignition circuit, with it's own fuse. If my electrics go I can switch off the master, and just keep her flying on ignition and master pump, if everything goes there is the BRS where the header tank would have been. Paranoid, but safe. Heavy, too! My current baby gets the normal header tank and one electric pump to back up the 912 mechanical pump. It will not be vented through the cap, but via a seperate fitting and a hose through the bottom of the plane, no smell. It is KIS, lightweight, sightgauge beats the inaccurate electric tankgauges. I repaired a friends Zodiac a few month ago, he had torn off his undercarriage, and in the process stove the firewall in with the nose leg. When we took the header tank out the tank was cracked at the bottom, but only trickled fuel. Lucky, lucky, lucky! The nosewheel leg acts like a lever, and it pivots around the upper bearing, pushing the lower bearing and firewall in. The upper bearing moves forward a bit, but is fairly flexible, and the floor of the cockpit caves in, pushing the skin and the heel support upwards. Beyond a certain point the tank is in harms way as the leg bends the firewall inwards, and 6061 T6 tanks crack, because of the tensile strength they don't deform softly. The nosewheel is like mounting a can opener to your plane! My 601's have all been taildraggers, lighter, faster, safer, and really easy to handle. My first 601 with 912 and GSC prop maxed out at 110 miles, no fairings, cruising comfortably at 100 miles. If you consider building, do consider the taildragger! Cheers from downunder, Chris > Let me get this right. You are placing plastic tape in between the metal > pieces that you are riveting together? My gut feeling is this will destroy > the strength of the riveted joint. I would make a phone call to ZAC for > approval if this is what you are doing. > > Cy Galley, TC - Chair, Emergency Aircraft Repair, Oshkosh > Editor, EAA Safety Programs > cgalley@qcbc.org or sportpilot@eaa.org > > Always looking for articles for Sport Pilot > > ----- Original Message ----- > From: "Chris Weber" > Subject: Zenith-List: Plastic-protection > > > > --> Zenith-List message posted by: "Chris Weber" > > > > Hello Listers, > > > > I am currently building a 601 HD from scratch, it is the second scratch > > built Zodie I have tackled so far. With the first one I had spent > agonizing > > hours trying to pull, peel and force the plastic protection layer of the > new > > sheets, and then later on spent days priming and painting. I am able to > > learn, and this time I am very carefull in handling the sheets, and > simply > > keep the plastic on. It is durable as anything, and I found a very tough > > white packing tape that will cover joints neatly, sticks like buggery. I > > don't have to prime the joints either, as the plastic keeps the metal > from > > touching. > > Only disadvantage is the colour, you can get any, as long as it is > white. > > Guess a few taped on blue cheat lines will do the trick. > > Building is so much easier this way, thought I'd let you guys know! > > > > Cheers, Chris > > 50% done on the plastic fantastic > > -- +++ NEU bei GMX und erstmalig in Deutschland: TV-geprfter Virenschutz +++ 100% Virenerkennung nach Wildlist. Infos: http://www.gmx.net/virenschutz ________________________________ Message 30 ____________________________________ Time: 03:46:48 PM PST US From: "Cy Galley" Subject: Re: Zenith-List: RE: Is the Savannah a copy of the 701??? --> Zenith-List message posted by: "Cy Galley" Van started with a Stits Playboy. Then modified it for Van RV-2. ----- Original Message ----- From: "jnbolding1" Subject: Re: Zenith-List: RE: Is the Savannah a copy of the 701??? > --> Zenith-List message posted by: "jnbolding1" > > > >Throp builders tell me that the first Van RV series were very similar to the > >T-18, but again, no interchangeable parts, did not copy blueprints, new > >design even if similar, built a prototype. > > > >I am unaware of anyone who has accused Aviat or Van of copying their > >designs. > > My next door neighbor has built two t-18s, I built an Rv-3 and the ONLY RV-1 is two doors down from us. I can emphatically state that anyone that states that those airplanes share more than both being low wing and made from aluminum doesn't have a good grasp on the situation. LOW&SLOW John > > ________________________________ Message 31 ____________________________________ Time: 04:09:03 PM PST US From: "Wayne McIntosh" Subject: Re: Zenith-List: Hoses & Pumps --> Zenith-List message posted by: "Wayne McIntosh" Sounds like you have a good club Gary. I have barbs also on my ultralight and I change fuel hose every year also. Wayne McIntosh Lafayette IN ----- Original Message ----- From: "Gary Gower" Subject: Re: Zenith-List: Hoses & Pumps > --> Zenith-List message posted by: Gary Gower > > > --- wizard-24@juno.com wrote: > > --> Zenith-List message posted by: wizard-24@juno.com > > > > > > > What I find VERY important in ZAC's airplanes is that they all have > > > this things in common: Very simple airplane with KIS in capital > > > letters, very strong, very light, easy to build (even that someones > > > > > of us get lost in this simplicity:-) > > > > Gary, I certainly agree with that in concept, and in fact, it was the > > sole reason why I elected to stay with the hose/barbed fittings for > > the > > fuel system, and my facet pump being mounted as per the plans (aka > > sucking some fuel) parallel to the engine driven pump. I figured > > Chris > > Heintz knows a hell of a lot more about building an airplane than I > > do. > > > > BUT, then you read the Bingelis books, and he advises not even to > > consider barbed fittings (same advice given by the Corvair expert > > William > > Wynne). So, where does a dummy like me go to get the right advice? > > Even > > those on this list (whose credentials I don't know, but seem to know > > a > > heck of a lot more than me!) are divided on these important issues. > > > > So in the end, my plane will have the simplicity of ZAC's design, and > > hopefully there won't be any I-told-you-so'd later! I know that in > > all > > the cars I've ever owned, I've never had a fuel hose blow out on me. > > And > > if the clamp starts to dig into the hose over the barbed fitting, I > > should be able to see traces of slight leakage before it becomes a > > major > > problem. Or at least that's what I'm hoping. > > > > Mike Fortunato > > 601XL > > > > Mike, > > I advise to change the hoses and clamps every year or two... > > In our Club, we have several Ultralights (FAI stds) and a few > homebuilts, about 40 planes in total, 30 members closed membership. > > Most of the planes have rather simple fuel systems with easy reach and > mantainance, we always use the hoses type advised by the manufactures. > > > One of the "clubs particular" rules included in our yearly "full check > out" of our planes; is to change all the fuel hoses and clamps (no more > than every 2 years), most of us change them every year. > The cost of this "peace of mind" is only two or 3 yards of hose, about > 10 new clamps and a few nylon ty wraps (sp?) (nylon straps), we all > help each other. > > Also the Clubs Safety Commite (with I am part), "signs off" the planes. > > We look at each other as family, we all have kids... so we take care of > all of us. > > Saludos > Gary Gower > > __________________________________ > http://promotions.yahoo.com/design_giveaway/ > > ________________________________ Message 32 ____________________________________ Time: 04:17:49 PM PST US From: "Stephen Johnston" Subject: Zenith-List: Savannah vs 701 --> Zenith-List message posted by: "Stephen Johnston" www.flypass.com has a comparison sheet on the Savannah and the 701. ________________________________ Message 33 ____________________________________ Time: 05:02:06 PM PST US From: "jnbolding1" Subject: Re: Zenith-List: RE: Is the Savannah a copy of the 701??? --> Zenith-List message posted by: "jnbolding1" ---------- Original Message ---------------------------------- From: "Cy Galley" >--> Zenith-List message posted by: "Cy Galley" > >Van started with a Stits Playboy. Then modified it for Van RV-2. Actually I think you will find that the modified Playboy IS the RV-1 (saw Ted flying it recently) the RV-2 was a glider project that never got finished. An interesting side note, before the RV4 was introduced, I along with about 5 others tried to convince Dick to bring the RV6 in first. His comment was one of the FEW times he's ever missed the mark. " The side by side market is saturated with the T18, Tailwind, Sidewinder, Mustang II and others The tandem configeration is a bigger market, plus I like that configuration " He also said he would never do a 4 place, as he says "we reserve the right to get smarter" And the rest is history. Low&SLOW John ________________________________ Message 34 ____________________________________ Time: 06:24:56 PM PST US From: Tim & Diane Shankland Subject: Re: Zenith-List: Fuel tanks --> Zenith-List message posted by: Tim & Diane Shankland If you want overvoltage protection you can buy 800 watt transient voltage suppressers from Digi-Key for $0.56 each. Tim Shankland Bryan Martin wrote: >--> Zenith-List message posted by: Bryan Martin > >on 3/31/04 8:00 PM, HINDE,FRANK (HP-Corvallis,ex1) at frank.hinde@hp.com >wrote: > > > >>About the only thing that can go wrong as far as I can see is if the >>alternator voltage regulator goes whacko and over volts >>everything....couldn't find good solution for that one. >> >>Frank >> >> >> > > >http://www.bandc.biz/cgi-bin/ez-catalog/cat_display.cgi?26X358218 > >Overvoltage protection. > > > > ________________________________ Message 35 ____________________________________ Time: 07:26:34 PM PST US From: "Larry Martin" Subject: Zenith-List: Dynon Avionics EFIS-D10 --> Zenith-List message posted by: "Larry Martin" I am about to purchase an EFIS-D10 from Dynon Avionics. They have a concern about the pitot tube on a slated wing. I haven't built my Pegastol wings yet and can't find any reference to the location of the pitot tube in the instructions. I would think it would be in the same location as on the Zenith 701 wings. I know it's on the left wing but I can't tell how far the tube extends past the slat. I also have Zenith drawings but it only shows the tube on the wing and doesn't reference it to the slats. I need to know if it extends past the slats and how well it works. Take a look, www.gyrostabs.com --- ________________________________ Message 36 ____________________________________ Time: 08:16:30 PM PST US From: "Ron DeWees" Subject: Zenith-List: Re: Microair 760 radio --> Zenith-List message posted by: "Ron DeWees" Hi LIst, I have a question for anyone who uses a Microair 760 radio. I just finished wiring mine up in the panel and the volume isn't very loud unless the signals are quite strong. With the volume all the way up there is little background hiss or sizzle even with the squelch fully open. When there is a weak signal I have to turn the volume all the way up to hear it comfortably, but when a stronger signal comes on the channel it will blast me out of my sox. The volume seems proportional to the signal strength to a greater degree than any radio I have experienced and I've been a ham radio operator for 45 years. The sensitivity is good and I can hear a lot of distant AWOS signals that other radios don't receive. Transission is fine and I am told the voice quality of transmitted signal is good. Anybody else had this problem? It's an earlier radio that I have had for a couple of years and maybe there is a mod? Thanks in advance, Ron DeWees ________________________________ Message 37 ____________________________________ Time: 09:31:03 PM PST US From: Jim and Lucy Subject: Zenith-List: Sebastian Heintz interview --> Zenith-List message posted by: Jim and Lucy Here is an internet radio show with Sebastian Heintz being interviewed about zenith aircraft http://www.kitplanes.com/Redirect/radio/1013003.asp for your listening pleasure Jim Pollard