---------------------------------------------------------- RV-List Digest Archive --- Total Messages Posted Mon 05/31/10: 7 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:09 AM - Re: engine loping (thomas sargent) 2. 08:35 AM - Re: engine loping (Ralph E. Capen) 3. 08:45 AM - Re: Mags: Ignition (RICHARD MILLER) 4. 10:05 AM - RV-9(A) Completed Empennage FS in Milwaukee, WI Area (Paul Folbrecht) 5. 04:06 PM - Re: Re: capacitive fuel probes (was: engine loping) (thomas sargent) 6. 07:38 PM - Re: Trouble with Altimeter (david cook) 7. 09:52 PM - Fixing a bad hole... (Chris Colohan) ________________________________ Message 1 _____________________________________ Time: 08:09:24 AM PST US Subject: Re: RV-List: engine loping From: thomas sargent To finish out this thread - I repeated the process I went through that started it. I taxied to the pumps, and let the plane sit there heat-soaking the engine while I fumbled around for half an hour calibrating the right fuel level probe. However, before I restarted the engine, I used the purge valve (this is an AFP installation) and boost pump to pump fuel through the system for 30 seconds before starting. There was no problem taxiing back to the hangar. So, I think the problem was just vapor lock that wasn't quite bad enough to stop the engine completely. -- Tom Sargent ________________________________ Message 2 _____________________________________ Time: 08:35:51 AM PST US From: "Ralph E. Capen" Subject: Re: RV-List: engine loping Thanks for closing the loop on this one. Ralph Just got back from a fuel injector balance data collection test flight - and getting ready to change the oil..... More on that later..... -----Original Message----- >From: thomas sargent >Sent: May 31, 2010 11:08 AM >To: rv-list@matronics.com >Subject: Re: RV-List: engine loping > >To finish out this thread - I repeated the process I went through that >started it. I taxied to the pumps, and let the plane sit there >heat-soaking the engine while I fumbled around for half an hour calibrating >the right fuel level probe. However, before I restarted the engine, I used >the purge valve (this is an AFP installation) and boost pump to pump fuel >through the system for 30 seconds before starting. There was no problem >taxiing back to the hangar. So, I think the problem was just vapor lock >that wasn't quite bad enough to stop the engine completely. >-- >Tom Sargent ________________________________ Message 3 _____________________________________ Time: 08:45:51 AM PST US From: RICHARD MILLER Subject: Re: RV-List: Mags: Ignition check here www.tcmlink.com/pdf2/SIL648.pdf - rick --- On Sun, 5/30/10, R.C. Flyer wrote: From: R.C. Flyer Subject: RV-List: Mags: Ignition -I recently spoke to the mechanic who is checking out my mags..... says t hey're in good shape and only need the oil seals replaced.--My FWF-sy stem definitely needs-the shower of sparks to run. So if anyone has one t hey're not using, or know of one available, let me know. One other question ..... Tony B's FWF Book shows a diagram of an Ignition set up with S.O.S. u sing a Key Ignition Switch. Is it possible to use the S.O.S. using Toggles for the power management?- If so, does someone have a schematic of how to wire it up? Thanks in advance. R.C. The New Busy is not the old busy. Search, chat and e-mail from your inbox. Get started. =0A=0A=0A ________________________________ Message 4 _____________________________________ Time: 10:05:39 AM PST US Subject: RV-List: RV-9(A) Completed Empennage FS in Milwaukee, WI Area From: "Paul Folbrecht" http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item 0478375741 do not archive Read this topic online here: http://forums.matronics.com/viewtopic.php?p=299468#299468 ________________________________ Message 5 _____________________________________ Time: 04:06:44 PM PST US Subject: Re: RV-List: Re: capacitive fuel probes (was: engine loping) From: thomas sargent Matt: FYI I calibrated my right tank Princeton fuel level sensor. I should mention that mine are the 2 set-point models. I doubt that makes much difference since that is probably just a software issue. At any rate both sensors seem to be working. The right one never shows more than 3/4 full, the left gets up to about 7/8. But they are repeatable. I'm not flying yet, so I haven't run the tanks down to see how it behaves. I did drain about 5 gal out of each tank (I don't want to do first flight with completely full tanks), but that didn't bring the level down far enough to register any change. The 6A tanks are 19 gallons, so they still each have at least 14 gallons in them which probably still has the probes completely submerged. On Sun, May 23, 2010 at 7:17 PM, thomas sargent wrote: > Matt: > Mine were pre-bent for the 6A. Maybe that makes a difference, I don't > know. Your experience and Dan's leaves me expecting lots of problems. > I'll keep the list appraised of my results. > > > Hi Tom, >>> >>> I'm really interested in your accuracy reports. Please post when you >>> have some data. So far, mine are completely worthless. I'm thinking of >>> recalibrating, but the first time I did the procedure went perfectly on both >>> sides so I'm thinking that won't change anything. >>> >>> Were your prebend by Princeton for the RV tanks? Kind of a "U" shape? >>> >>> Matt >>> >>> > -- > Tom Sargent > -- Tom Sargent ________________________________ Message 6 _____________________________________ Time: 07:38:26 PM PST US From: david cook Subject: Re: RV-List: Trouble with Altimeter Thanks for the replies. I will let you know the end result. David R. Cook N815DC RV-6 Flying ________________________________ From: david cook Sent: Sat, May 29, 2010 8:37:40 PM Subject: RV-List: Trouble with Altimeter Hi All My altimeter just went crazy. Jumped in the ole 6 and spotted the altitude had gone up 300 feet. Reset to field elevation and the pressure reading was 28.7. I looked around an there was no hurricane in sight. Any one have an explanation. The unit is only 3 years old from Vans. Do I just reset it or is there a problem? Dave David R. Cook N815DC RV-6 Flying ________________________________ Message 7 _____________________________________ Time: 09:52:16 PM PST US Subject: RV-List: Fixing a bad hole... From: Chris Colohan I've reached the horizontal stabilizer in building my RV-10. While drilling the 3/32" holes in the spar doublers for the forward spar, I mucked one of the holes up. In particular, the drill appears to have slid about 3/32" sideways while drilling, mis-placing the hole by 3/32". Perhaps better explained through pictures: http://picasaweb.google.com/lh/photo/YZEMcGR7IQ7RKKSRLDgTIKIqw9YRHPUJIjz5HHlTjwc?feat=directlink http://picasaweb.google.com/lh/photo/eN0TsDBeAFqGoRwnEt8-s6Iqw9YRHPUJIjz5HHlTjwc?feat=directlink http://picasaweb.google.com/lh/photo/e83Ltq54S8AOdpT-fXhSuKIqw9YRHPUJIjz5HHlTjwc?feat=directlink http://picasaweb.google.com/lh/photo/JklKOOxA-qYDu9BtPMZJeKIqw9YRHPUJIjz5HHlTjwc?feat=directlink So I know how to fix a hole when you make it slightly too large -- you drill it out larger and put an "oops" rivet in it. But what can you do to fix a hole which is misplaced? Is there a good fix for this? Drilling a hole large enough to cover this error would take a rivet larger than 1/8"... (At worst, I can just replace the spar -- I have a spare, due to an earlier error that Van's made, and so I'd just need to order some new spar doublers. But I'd like to first learn if I can fix this one.) Also, while I have your ear -- I made this error while using a brand new Rigid Cobalt drill bit (like this one: http://www.ridgid.com/Tools/332-Cobalt-Drill-Bit/EN/index.htm). The bit appears to be able to cut sideways just as well (or even better) than it can drill straight ahead in aluminum. It also takes about 20-30 seconds per hole drilling at 4000rpm (assuming my air drill is making its rated speed) while applying moderate pressure. Is this a known problem with this type of bit, or is my drilling technique off? I've ordered some "aviation" 3/32" bits from Avery, but wanted to know if I should expect it to be easier to drill straight with those bits. Thanks! 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