---------------------------------------------------------- RV10-List Digest Archive --- Total Messages Posted Sat 04/10/10: 8 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:11 AM - Re: Re: To Magento - Or Not To Magento (John Cumins) 2. 05:58 AM - Re: Re: To Magento - Or Not To Magento (Bob Leffler) 3. 07:25 AM - Re: Re: To Magento - Or Not To Magento (Kelly McMullen) 4. 01:57 PM - Anybody need an "Extra Hand" in building their RV ?? (Garey Wittich) 5. 02:59 PM - Gretz GA-1000 Wiring (Sean Stephens) 6. 04:39 PM - Re: Gretz GA-1000 Wiring (Jim Berry) 7. 04:49 PM - Re: Gretz GA-1000 Wiring (Bob Leffler) 8. 04:57 PM - Re: Re: Gretz GA-1000 Wiring (Bob Leffler) ________________________________ Message 1 _____________________________________ Time: 12:11:37 AM PST US From: "John Cumins" Subject: RE: RV10-List: Re: To Magento - Or Not To Magento Bob I will be going with the 3G system that's for sure. I am looking forward to their demo at Oshkosh also. John G. Cumins 40864 Emp almost complete winds kit sitting on the shelf -----Original Message----- From: owner-rv10-list-server@matronics.com [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Bob and Karen Brown Sent: Friday, April 09, 2010 9:18 PM Subject: RE: RV10-List: Re: To Magento - Or Not To Magento As I noted on my earlier post, if you'll contact Larry Vetterman, he'll give you the rundown on his experiences running the G3 over two years. I'm pretty sure he did a writeup on his test results and posted it on VAF. He was a "beta tester" for G3 if I recall. I remember that a measurable reduction in fuel burn at cruise was documented, and a "much smoother engine"...but it's been two years since I read his writeup there. Larry does 3 leg GPS runs on almost all of his tests (you can check out his website for some other testing he's done on fairings and stuff), he'll have that info. One thing he told me in person was that he could easily feel the difference in power between having the G3 system turned off (running on stock mags) and turning it on. By the way, the magnetos used with the G3 are stock, they only have a small hole drilled in them to run a wire, no modifications to the operation or function of the magneto. I think I've almost talked myself into buying it... Bob Brown 40871 Do not archive It would be even better if they were able to do a 3 leg GPS run with G3 enabled, followed by one with it disabled, on stock magnetos, so we could have a real world estimate of power difference. ________________________________ Message 2 _____________________________________ Time: 05:58:36 AM PST US From: "Bob Leffler" Subject: RE: RV10-List: Re: To Magento - Or Not To Magento Larry's write up can be found on his web site: http://www.vettermanexhaust.com/ Here's the section about the G3: Before I started the prop tests, I was very interested in the new electronic ignition that I had seen on the web. www.g3ignition.com . I called Tom and he agreed to install one on my 7A. I found the installation was simple for even me as electricity and I just don't get along. I tell people that I am so electrically challenged that I hire my neighbor to change my flashlight batteries. Oh well, I would bet that some electronics guru can't weld either. The hardest part of the installation was removing the Bendix mags. and installing the post that hooks up the G3. Now after flying it almost 100 hours, here are the reasons that I really like the G3. #1. Easy to install, even I could follow the wiring diagrams. 2. the system uses the existing mags and if there is an electrical failure, the mags operate normally. 3. the engine starts very well both hot and cold. 4. I can now run lean of peak if desired whereas before my M1B, with standard mags balked at anything beyond peak EGT. 5. I see a lower ghp with the G3 vs standard mags. 6. The M1B engine is extremely smooth with the G3. 7. I used the expensive Champion fine wire spark plugs(I had a set on the shelf) gapped to .021 however I understand that an inexpensive automotive plug can also be used. Aircraft RV-7A, IO-360 M1B 180HP standard air intake and standard crossover system. Test #1 Standard Mags vs. G3 ignition Hartzell Blended Airfoil prop. A series of flights were made in this configuration and the data was compiled and averaged. The flight data system was used for all of the following tests as in all prior tests. The G3 is a type of system that is easily forgotten and all it takes is to reach over and turn it off and see the difference in smoothness. DA 7500ft. MP 22.7 RPM 2400 OAT 45.1 GPH 9.1 IAS 166mph TAS 189mph EGT #1 1387 #2 1358 #3 1370 #4 1340. G3 ignition OFF DA 7500ft MP 22.7 RPM 2400 OAT 45.1 GPH 8.9 IAS 168mph TAS 191mph EGT #1 1400 #2 1372 #3 1377 #4 1345. G3 ignition ON Note: The G3 will allow a higher peak EGT which allows a fuel savings. Tests were also conducted at 10,500DA and the important data shows 20.9 MP 2400RPM at 50 degrees rich of peak the IAS 158 TAS 186 9GPH while 50 degrees lean of peak yields IAS 154 TAS 182 8GPH. G3 ignition on. In every test conducted with both props, there is a definite engine smoothness noted with the G3 on vs operating in the standard mag mode. -----Original Message----- From: owner-rv10-list-server@matronics.com [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Bob and Karen Brown Sent: Saturday, April 10, 2010 12:18 AM Subject: RE: RV10-List: Re: To Magento - Or Not To Magento As I noted on my earlier post, if you'll contact Larry Vetterman, he'll give you the rundown on his experiences running the G3 over two years. I'm pretty sure he did a writeup on his test results and posted it on VAF. He was a "beta tester" for G3 if I recall. I remember that a measurable reduction in fuel burn at cruise was documented, and a "much smoother engine"...but it's been two years since I read his writeup there. Larry does 3 leg GPS runs on almost all of his tests (you can check out his website for some other testing he's done on fairings and stuff), he'll have that info. One thing he told me in person was that he could easily feel the difference in power between having the G3 system turned off (running on stock mags) and turning it on. By the way, the magnetos used with the G3 are stock, they only have a small hole drilled in them to run a wire, no modifications to the operation or function of the magneto. I think I've almost talked myself into buying it... Bob Brown 40871 Do not archive ________________________________ Message 3 _____________________________________ Time: 07:25:11 AM PST US Subject: Re: RV10-List: Re: To Magento - Or Not To Magento From: Kelly McMullen Thanks for extracting that write-up Bob. Good info. Anyone know of similar comparison for Lightspeed vs mags? Obviously not as easy to compare since hardware has to be changed. On Sat, Apr 10, 2010 at 6:00 AM, Bob Leffler wrote: > > Larry's write up can be found on his web site: > http://www.vettermanexhaust.com/ > > Here's the section about the G3: > > ________________________________ Message 4 _____________________________________ Time: 01:57:18 PM PST US From: Garey Wittich Subject: RV10-List: Anybody need an "Extra Hand" in building their RV ?? Greetings: I have time to help someone on their Project. I have completed building the RV-8A empennage ( Acid etched, Alodined and Mil Epoxy Primed the interior skins and assembled) and have run out of room to continue building. Have tools to help someone on their Project. I am a retired electrical engineer and have designed my own Electrical System for the RV. Also designed an "Pilot Aux Warning System" that monitors Vans analog engine gauges and provides a Warning for - "Low Fuel", "Hi Oil Temp", "Low Voltage", etc Spent many ours researching the best way to do things on Matronics from other Builders. Hoped to use this info on my Project, but ran out of room to build, thus hoping to share ideas and help someone on their "Project". Garey Wittich (CFI, MEI) Santa Monica, CA (310) 392-1682 ________________________________ Message 5 _____________________________________ Time: 02:59:51 PM PST US From: Sean Stephens Subject: RV10-List: Gretz GA-1000 Wiring Quick question regarding the four wires coming from the GA-1000 pitot. The P+ and P- wires are marked, but I just wanted to verify that the two smaller wires are the thermistor. The instructions don't specifically say and the wires aren't marked. Thanks, -Sean #40303 (back at it after a few years hiatus) ________________________________ Message 6 _____________________________________ Time: 04:39:55 PM PST US Subject: RV10-List: Re: Gretz GA-1000 Wiring From: "Jim Berry" Sean, You are correct. Also, check your Gretz pitot for leaks before installing it in your wing. It is a pita to discover a leak later on. Ask me how I know. Jim Berry 40482 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=293780#293780 ________________________________ Message 7 _____________________________________ Time: 04:49:06 PM PST US From: "Bob Leffler" Subject: RE: RV10-List: Gretz GA-1000 Wiring Your assumption is correct. Andrew has installation instructions on his web site. http://www.angusaviation.com/ bob -----Original Message----- From: owner-rv10-list-server@matronics.com [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Sean Stephens Sent: Saturday, April 10, 2010 5:59 PM Subject: RV10-List: Gretz GA-1000 Wiring Quick question regarding the four wires coming from the GA-1000 pitot. The P+ and P- wires are marked, but I just wanted to verify that the two smaller wires are the thermistor. The instructions don't specifically say and the wires aren't marked. Thanks, -Sean #40303 (back at it after a few years hiatus) ________________________________ Message 8 _____________________________________ Time: 04:57:19 PM PST US From: "Bob Leffler" Subject: RE: RV10-List: Re: Gretz GA-1000 Wiring Not only check for leaks, but proper operation. I had a thermistor that had one lead shorted to ground. It worked well on the bench, when the pitot body wasn't grounded. It got squirrelly when it was installed. It took quite a bit of testing to find the root cause. The good news was Andrew was prompt sending a replacement. Bob -----Original Message----- From: owner-rv10-list-server@matronics.com [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Jim Berry Sent: Saturday, April 10, 2010 7:39 PM Subject: RV10-List: Re: Gretz GA-1000 Wiring Sean, You are correct. Also, check your Gretz pitot for leaks before installing it in your wing. It is a pita to discover a leak later on. Ask me how I know. Jim Berry 40482 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=293780#293780 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv10-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV10-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/rv10-list Browse Digests http://www.matronics.com/digest/rv10-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.