Where to get fresh air? - Zenith Aircraft Builders and Flyers2024-03-29T12:13:33Zhttps://zenith.aero/forum/topics/where-to-get-fresh-air?commentId=2606393%3AComment%3A712374&feed=yes&xn_auth=noThanks Arthur,
I just hadn’…tag:zenith.aero,2020-03-07:2606393:Comment:7123742020-03-07T03:01:52.517ZRobert Riathttps://zenith.aero/profile/RobertDRiat
<p>Thanks Arthur,</p>
<p> I just hadn’t realized it was a problem. I need to do my condition inspection in</p>
<p>April so I’ll look at changing it. Glad for this forum, I never stop learning from other</p>
<p>builders!</p>
<p>Thanks Arthur,</p>
<p> I just hadn’t realized it was a problem. I need to do my condition inspection in</p>
<p>April so I’ll look at changing it. Glad for this forum, I never stop learning from other</p>
<p>builders!</p> Robert,
I bought my engine in…tag:zenith.aero,2020-03-07:2606393:Comment:7122032020-03-07T02:15:45.780ZArthur E Graveshttps://zenith.aero/profile/ArthurEGraves
<p>Robert,</p>
<p>I bought my engine in 2019 and consulted with the UL Power rep at the open hangar last fall. I noticed that the installation on the Zenith factory plane did not match the Zenith installation instructions.</p>
<p>Please note the regulator position (6182) on the firewall and the cooling source position (6199) on the Zenith factory plane with the UL Power engine on the attached pictures. Now note the original regulator position indicated by the extra holes in the ignition…</p>
<p>Robert,</p>
<p>I bought my engine in 2019 and consulted with the UL Power rep at the open hangar last fall. I noticed that the installation on the Zenith factory plane did not match the Zenith installation instructions.</p>
<p>Please note the regulator position (6182) on the firewall and the cooling source position (6199) on the Zenith factory plane with the UL Power engine on the attached pictures. Now note the original regulator position indicated by the extra holes in the ignition mounting plate (6183) and the original cooling air source (6183).</p>
<p>Why do you think Zenith moved it?</p> Arthur, those are good ideas!…tag:zenith.aero,2020-03-07:2606393:Comment:7122792020-03-07T00:47:33.709ZDavid J. Beaulieuhttps://zenith.aero/profile/DavidJBeaulieu
<p>Arthur, those are good ideas! The R/R is actually offset aft and off the plate holding the ignition module and heat pasted. I hadn't considered using an alternate air pickup location/source...makes sense to me subjectively. Would be interesting to quantify the ram air temp rise is from ambient thru the baffles to the R/R blast tube somehow. Either way, it couldn't hurt to locate to the firewall and blast with ambient outside air direcrly. Cheers! </p>
<p>Arthur, those are good ideas! The R/R is actually offset aft and off the plate holding the ignition module and heat pasted. I hadn't considered using an alternate air pickup location/source...makes sense to me subjectively. Would be interesting to quantify the ram air temp rise is from ambient thru the baffles to the R/R blast tube somehow. Either way, it couldn't hurt to locate to the firewall and blast with ambient outside air direcrly. Cheers! </p> Arthur, Not doubting anythin…tag:zenith.aero,2020-03-07:2606393:Comment:7122772020-03-07T00:38:24.351ZRobert Riathttps://zenith.aero/profile/RobertDRiat
<p>Arthur, Not doubting anything you say here, but there are probably several of us who mounted the</p>
<p>regulator on the backside of the ignition module. I used Homebuilt Help videos when I installed my</p>
<p>engine and that’s the way they did it. I also read the UL installation manual and it said “firewall (or</p>
<p>elsewhere)” and that the back of the regulator against metal to help dissipate the heat. It did say you</p>
<p>could add thermal material to help with that. I did mount my…</p>
<p>Arthur, Not doubting anything you say here, but there are probably several of us who mounted the</p>
<p>regulator on the backside of the ignition module. I used Homebuilt Help videos when I installed my</p>
<p>engine and that’s the way they did it. I also read the UL installation manual and it said “firewall (or</p>
<p>elsewhere)” and that the back of the regulator against metal to help dissipate the heat. It did say you</p>
<p>could add thermal material to help with that. I did mount my regulator off to the side (not directly opposite</p>
<p>of the modules) but the modules are spaced from that backing plate and I didn’t see them an issue.</p>
<p>Also, the manual shows the hose flange mounted as David’s picture shows and my thinking is that the </p>
<p>forced air at that location has not passed by the cylinders yet so shouldn’t be all that hot.</p>
<p> I only have 140 hours on my engine so time will tell if I have it wrong. My manual was from 2017 and</p>
<p>it seems like they should have been more specific if it was that big a problem.</p>
<p></p>
<p>ll.</p> It looks like you mounted the…tag:zenith.aero,2020-03-06:2606393:Comment:7121832020-03-06T22:51:38.935ZArthur E Graveshttps://zenith.aero/profile/ArthurEGraves
<p>It looks like you mounted the voltage regulator to t he backside of the ignition module. Per the UL Power rep at the last open hangar, that will burn up the regulator. The voltage regulator needs to be mounted to the firewall with thermal paste behind it. Also, if you take the air from a flange at the back of the engine baffle, you have pre-heated the cooling air. Why would you want to do that?</p>
<p>Either mount a 1 inch flange to the air scoop in front of the left cylinder bank (this is…</p>
<p>It looks like you mounted the voltage regulator to t he backside of the ignition module. Per the UL Power rep at the last open hangar, that will burn up the regulator. The voltage regulator needs to be mounted to the firewall with thermal paste behind it. Also, if you take the air from a flange at the back of the engine baffle, you have pre-heated the cooling air. Why would you want to do that?</p>
<p>Either mount a 1 inch flange to the air scoop in front of the left cylinder bank (this is what Zenith ended up doing AFTER they burned up 3 regulators), or use a NACA vent on the lower cowling and then a 2 inch flange ($10) to the regulator baffle.</p> Yestag:zenith.aero,2020-01-12:2606393:Comment:7059182020-01-12T02:23:12.654ZDavid J. Beaulieuhttps://zenith.aero/profile/DavidJBeaulieu
<p>Yes</p>
<p>Yes</p> Dave does your side nacho sco…tag:zenith.aero,2020-01-11:2606393:Comment:7058212020-01-11T23:05:40.221ZMark Pensenstadlerhttps://zenith.aero/profile/MarkPensenstadler
<p>Dave does your side nacho scoop go to your cabin heat?</p>
<p></p>
<p>Dave does your side nacho scoop go to your cabin heat?</p>
<p></p> David is right - it was the w…tag:zenith.aero,2020-01-10:2606393:Comment:7057572020-01-10T03:15:54.453ZRobert Riathttps://zenith.aero/profile/RobertDRiat
<p>David is right - it was the way UL instructions said to install the cooling hose. I did mine on</p>
<p>the right, but it doesn’t matter which side.</p>
<p>David is right - it was the way UL instructions said to install the cooling hose. I did mine on</p>
<p>the right, but it doesn’t matter which side.</p> Mark, most installs I've seen…tag:zenith.aero,2020-01-10:2606393:Comment:7056162020-01-10T02:06:38.213ZDavid J. Beaulieuhttps://zenith.aero/profile/DavidJBeaulieu
<p>Mark, most installs I've seen pics of (including mine) take air for that blast tube to the R/R from the rear of the left cylinder bank. Use a one inch flange for ducting <a href="https://www.aircraftspruce.com/pages/ha/flanged/ductflanges.php" rel="nofollow noopener" target="_blank">https://www.aircraftspruce.com/pages/ha/flanged/ductflanges.php</a> cut a hole, rivet flange, clamp hose, done.…</p>
<p></p>
<p>Mark, most installs I've seen pics of (including mine) take air for that blast tube to the R/R from the rear of the left cylinder bank. Use a one inch flange for ducting <a rel="nofollow noopener" href="https://www.aircraftspruce.com/pages/ha/flanged/ductflanges.php" target="_blank">https://www.aircraftspruce.com/pages/ha/flanged/ductflanges.php</a> cut a hole, rivet flange, clamp hose, done.</p>
<p><a href="https://storage.ning.com/topology/rest/1.0/file/get/3812301189?profile=original" target="_blank" rel="noopener"><img src="https://storage.ning.com/topology/rest/1.0/file/get/3812301189?profile=RESIZE_710x" class="align-left"/></a></p> The UL Power install kit come…tag:zenith.aero,2020-01-10:2606393:Comment:7058482020-01-10T01:20:28.464ZMark Pensenstadlerhttps://zenith.aero/profile/MarkPensenstadler
<p>The UL Power install kit comes with all the plumbing for it so I'm guessing that's a 'yes'!</p>
<p>The UL Power install kit comes with all the plumbing for it so I'm guessing that's a 'yes'!</p>