Yes, I believe the header tank should be vented in any case. Hartmut
> Date: Mon, 19 Nov 2007 19:03:37 -0500> From: [EMAIL PROTECTED]> To: [EMAIL > PROTECTED]> Subject: RE: [ercoupe-tech] Re: Cowl fuel indicator> CC: > [email protected]; [EMAIL PROTECTED]> > While on the subject of > gas caps....> > Should the cap on on the header tank (with the sight guage) > be vented? > > Thanks,> Fred> ---- Hartmut Beil <[EMAIL PROTECTED]> wrote: > > > =============> Jim,> > I experienced these bubbles myself.> > After a > closer inspection of the cap of the gauge tube , I could see that it was > cracked and thus acting as a special vent.> Replacing the cap solved the > problem until the new cap cracks again . They go away fast in the California > sun> > So the fix should be simple.> > > Hartmut> > > To: [EMAIL PROTECTED]: > [EMAIL PROTECTED]: Sun, 18 Nov 2007 20:41:52 -0500Subject: [ercoupe-tech] Re: > Cowl fuel indicator> > > > > The last few times I've been aloft in my 415-C > (4/46, #1286), the cowl tank quantity indicator, a glass tube, apparently, > with a plastic cap, and the rod from below with an kind of ovoid shaped > (looks metallic) topknot for one to see has been the scene of weird > activity.The behavior is, after climb out, which can depress the indicator > maybe 1/2" or so for a while, pumps back up on level off. Then all seems > right with the world. After about 20' of this reverie, I would start to get > bubbles coming into the bottom of the tube. This in the next 10' to 20' it > would get worse - it looks like a stinkin' coffee percolator, albeit no > column of fuel seems to crawl up into the tube, but just lots and lots of > bubbles. It seems to cause 0 ill effect, beyond the natural anxiety that any > odd fuel system behavior might engender. After landing and subsequent climb > out all seems fine until about another 20' pass.Background: I had a leaking > terneplate tank that seemed incorrigible and John Wright, Jr. sold me a > stainless steel custom made cowl tank which I had installed summer before > last (2005). Roughly in that time frame I replaced the fuel tank gaskets with > new ones from Mr. Cooper (100 Lotsa-Lead versions). All seemed ok. This > "perking" effect I think I've only noticed in the past month or two (maybe > more - my mind is gone). Seems totally nutty, as the top cap of the cowl > glass seems to be sealed properly and no fuel escapes up and out. Oh, by the > way, wing tanks are capped with float-wire-"meter"-caps with the obvious > central vents. I leave them in as I keep it under a roof (I used to swap them > with solid caps when it was tied down in the weather - I carry them along > just in case).??????Jim BrennanNC63963 / #1286 / 4/26/46WST / RI > > > > > > > > _________________________________________________________________> Your > smile counts. The more smiles you share, the more we donate. Join in.> > www.windowslive.com/smile?ocid=TXT_TAGLM_Wave2_oprsmilewlhmtagline _________________________________________________________________ Put your friends on the big screen with Windows Vista® + Windows Live™. http://www.microsoft.com/windows/shop/specialoffers.mspx?ocid=TXT_TAGLM_CPC_MediaCtr_bigscreen_102007
