---------------------------------------------------------- Zenith701801-List Digest Archive --- Total Messages Posted Mon 07/06/09: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:39 AM - Re: Re: 701 fuel system design (BokKat) 2. 06:41 AM - Re: Garmin GTX 330 Transponder & SL40 Radio (George Race) 3. 06:41 AM - Chat Room Reminder (George Race) 4. 06:54 AM - Re: Garmin GTX 330 Transponder & SL40 Radio (Rene Felker) 5. 03:18 PM - placement of fuel sender on extended range tanks, washers (Benjamin Q) ________________________________ Message 1 _____________________________________ Time: 05:39:48 AM PST US From: "BokKat" Subject: Re: Zenith701801-List: Re: 701 fuel system design Yes, I'd sure recommend the digital fuel flow sensor on the Dynon. When it tells you that you have say, 5.7 gallons on one tank and 4.3 in the other, it is right on! Always within a tenth of a gallon or so. Actually I found my 10 gallon tanks hold close to 11, so when I calibrated it, I put a gallon in them and then 'told' it that it was empty, etc. So I have 1 - 2 gallons more than the gauges tell me. A bit of a fudge factor. Like Les, I'd highly recommend any fuel flow meter. My neighbor has another make on his RV-8 but I don't recll the make or mode. In the rare instance when you start to get low with a few gallons in a tank, it will flash and yell at you to remind you to fuel up. It does everything to alert you short of a hand popping out of the Dynon and slapping you on the cheek! Maybe Les's autopilot grabs the stick from the pilot and flies to the nearest airport on the GPS database! Hah! ----- Original Message ----- From: Les Goldner To: zenith701801-list@matronics.com Sent: Sunday, July 05, 2009 9:07 PM Subject: RE: Zenith701801-List: Re: 701 fuel system design Gary, If you don't want to get nervous about your "trusty" electric needles to determine fuel availability, consider a fuel flow measuring system. The fuel flow sensor added about $100 to the cost of my Dynon engine monitoring. When I fill up now I rarely have to add over a quarter-gallon more or less than the Dynon tells me that I have used. Also, we have discussed the uneven draw from the tanks in earlier threads. I always fly with both inner tanks or both outer tanks open so that I can't forget to switch tanks. My tanks may drain unevenly because my autopilot uses the ailerons to steer the plane, which means the wings are not always level. Frankly I won't worry about this unless I'm low on fuel because if one tank empties the plane should just draw from the other one. However, I have never been really low on fuel and the tanks have never had more than a 4-gallon difference to see what would happen. Les From: owner-zenith701801-list-server@matronics.com [mailto:owner-zenith701801-list-server@matronics.com] On Behalf Of Gary Gower Sent: Wednesday, July 01, 2009 10:22 AM To: zenith701801-list@matronics.com Subject: Re: Zenith701801-List: Re: 701 fuel system design Hello Dan, I installed the same (one valve in each side of the cabin). My 701 with only the main valve (floor valve), will always use first the gasoline from the right wing. No problem in short flights (less than an hour), when the plane is parked both tanks will even in a few minutes. In long XCountry flights (more than 2.5 hrs a leg) this has worked for me: Take off with both side valves open, for security, at cruise altitude I close the right tank for one hour (in use the left tank), at one hour, I open the right valve (keep both valves opened for the rest of the flight) and when landing I always land with both tanks (almost) even. For "Simplicity and lightness" I should only add the right wing valve, left one never closed for balance fuel. I always plan my flights for less than 3 hrs a leg... I get a little nervous when the "trusty" electric needles get close to 1/4... :-) :-) Here there are only a few landing strips, less with gasoline available. Saludos Gary Gower Flying from Chapala, Mexico Coordenadas Google Earth. 20=B018'33.86"N 103=B0 9'36.99"W 701 912S 251 hrs of fun Building a 601 XL Jab 3300. --- On Wed, 7/1/09, Dan Wilde wrote: From: Dan Wilde Subject: Re: Zenith701801-List: Re: 701 fuel system design To: zenith701801-list@matronics.com Date: Wednesday, July 1, 2009, 11:10 AM I just installed valves at each wing root inside the cockpit. I can easily reach each valve and use it to balance fuel use between tanks. I added a note in my preflight checklist to make sure all fuel valves are on for takeoff. Dan Wilde > > Too true Curt but that is the only way to control your fuel and proper fuel managment is part of flying. General aviation is full of fuel related incidents as well as commerical aviation. I'm trying to reduce other fuel related problems excessive fuel imbalance can be just as dangerious as fuel starvation. My thinking on the two fuel selectors at the wing roots is it's very visable (I.E.unlike John Denver's) and easy to get at. > > Reguards. Dave > > > >&nNavigator?Zenith701801-List" target=_blank>http://www.matronics.com/Navig========= =============== Navigator Photoshare, and href="http://www.matronics.com/Navigator?Zenith701801-List">http://www. matronics.com/Navigator?Zenith701801-List Web Forums! href="http://forums.matronics.com">http://forums.matronics.com href="http://www.matronics.com/contribution">http://www.matronics.com/c =========== ________________________________ Message 2 _____________________________________ Time: 06:41:01 AM PST US From: "George Race" Subject: RE: Zenith701801-List: Garmin GTX 330 Transponder & SL40 Radio Hi Stan: I have found that SteinAir has been very competitive, price wise, in the past. www.steinair.com Give them a chance at giving you a quote. George "Fellow 701 Builders: I am currently searching for the best prices on the Garmin GTX 330 transponder and SL 40 radio. Aircraft Spruce lists the former at $3,621 and the latter at $1650. I am wondering if there is anywhere they can be purchased at a lower price? I recognize that there are less expensive alternatives but the traffic information the 330 provides to the GRT Sport EFIS seems a wise choice given the difficulty in seeing a polished aircraft. I live in the Denver area. Stan Challgren 701/3300 " ________________________________ Message 3 _____________________________________ Time: 06:41:24 AM PST US From: "George Race" Subject: Zenith701801-List: Chat Room Reminder Live Chat Room every Monday evening around 8:00 EDT www.mykitairplane.com Click on the Chat Room link on the page. Check out my new "Zenith Logo" Data Plate, really cool! George Do Not Archive ________________________________ Message 4 _____________________________________ Time: 06:54:05 AM PST US From: "Rene Felker" Subject: RE: Zenith701801-List: Garmin GTX 330 Transponder & SL40 Radio I second www.steinair.com. He did my RV-10 panel and sent me to Stark to get the garmin radios. At the time, it was cheaper to get them from Stark, I don't know if that is still the case. See my panel at http://www.steinair.com/panels.htm Rene' Felker RV-10 N423CF Flying 801-721-6080 -----Original Message----- From: owner-zenith701801-list-server@matronics.com [mailto:owner-zenith701801-list-server@matronics.com] On Behalf Of George Race Sent: Monday, July 06, 2009 7:24 AM Subject: RE: Zenith701801-List: Garmin GTX 330 Transponder & SL40 Radio Hi Stan: I have found that SteinAir has been very competitive, price wise, in the past. www.steinair.com Give them a chance at giving you a quote. George "Fellow 701 Builders: I am currently searching for the best prices on the Garmin GTX 330 transponder and SL 40 radio. Aircraft Spruce lists the former at $3,621 and the latter at $1650. I am wondering if there is anywhere they can be purchased at a lower price? I recognize that there are less expensive alternatives but the traffic information the 330 provides to the GRT Sport EFIS seems a wise choice given the difficulty in seeing a polished aircraft. I live in the Denver area. Stan Challgren 701/3300 " ________________________________ Message 5 _____________________________________ Time: 03:18:38 PM PST US Subject: Zenith701801-List: placement of fuel sender on extended range tanks, washers From: "Benjamin Q" I ordered the extended range tanks for my 701 and the plans indicate that the inboard fuel sender is the side-mounted and the outboard is the top-mounted. I called Zenith and requested the old instructions for the top mounted because the new instructions only covered the new fuel sender. The gentleman I talked to said that I should be using the side mount for both and told me to send back the top mounted senders for replacement side mounted senders. This is a little embarrassing but when I was working on the outboard tank I saw that the side mounted fuel sender would be possibly damaged if I put it under the fuel cap so I started the installation on the other side without thinking about the consequences of not having access to it once it was installed. So at least one fuel tank is getting the side mounted fuel sender in the middle. I want to do everything I can to make sure it doesn't leak. In hindsight this was probably why the outboard is the top mounted style. So does anyone have some suggestions as to which side I should put the other side mounted fuel sender on? The second issue that came up is that my installation kit didn't include any paper washers. After a quick check on the forums I see that a few people have had trouble with the paper washers leaking and breaking. There were a few alternatives presented out there. Using EZ Turn (Fuel lube) seemed to do the trick for most people. Some others suggested using copper washers or self sealing washers. What combination would give me the best chance not to have leaks in the future? Another quick questions, I will probably be taking the wings off the trailer the airplane fairly often. What kind of quick disconnect would you recommend to put in the fuel line. 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