tag:blogger.com,1999:blog-7041272795548534045.post3483996849600620509..comments2023-08-26T03:15:36.194-05:00Comments on Letters from Flyover Country: Flight test follies: Part TwoBob Collinshttp://www.blogger.com/profile/04422722044859589459noreply@blogger.comBlogger12125tag:blogger.com,1999:blog-7041272795548534045.post-69694043715891936202012-06-13T16:47:16.900-05:002012-06-13T16:47:16.900-05:00This is not true at all, actually. I've read M...This is not true at all, actually. I've read Mahlon Russell's "How to Break in an Engine" and while it's true you have to run 75% to break in the engine, you do NOT have to run it at 75% AT ALL TIMES. That said, I fully understand the need to run it at 75%, but this was a first flight to understand handling characteristics. There was no immediate need to work on breaking in the engine, especially when the FIRST thing that needs to be done is establish stall speeds, which, of course, you can't do at 75%.<br /><br />There's no penalty for waiting until -- well -- tonight to start breaking in the engine.Bob Collinshttps://www.blogger.com/profile/04422722044859589459noreply@blogger.comtag:blogger.com,1999:blog-7041272795548534045.post-26846071987084368042012-06-13T16:11:01.421-05:002012-06-13T16:11:01.421-05:00Congrats. Great to see you flying. However, you m...Congrats. Great to see you flying. However, you must run your engine at 75% power or over at all times during break-in. Any credible engine expert as well as the factories will tell you this. If you don't do this the rings will not set to the cylinder walls and you will have high oil consumption until the cylinders are rehoned and the break-in done properly. You must run at high power for the first 50hrs or until oil consumption stablizes whichever comes first. Don't baby it. High power will not hurt an engine unless something else is wrong. And you won't be able to detect high temps or other problems early on without running it hard. Good luck!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-7041272795548534045.post-9988741776403929792012-06-13T08:22:29.219-05:002012-06-13T08:22:29.219-05:00You... wanted... to... hug? Oh, your plane. Yes, t...You... wanted... to... hug? Oh, your plane. Yes, that makes sense. ;-) <br /><br />Glad you had fun and loved hearing about the unbelievably gorgeous landing.Julia Schrenklerhttps://www.blogger.com/profile/09101271024435688393noreply@blogger.comtag:blogger.com,1999:blog-7041272795548534045.post-50755585582461760322012-06-12T23:29:34.816-05:002012-06-12T23:29:34.816-05:00// why on earth do you want to stall it ????? love...// why on earth do you want to stall it ????? love, your sister<br /><br />Wing stalls, not engine stalls. Being able to determine the airspeed at which a wing stalls (no longer provides lift) is critical to calculating proper landing speed, among other things.Bob Collinshttps://www.blogger.com/profile/04422722044859589459noreply@blogger.comtag:blogger.com,1999:blog-7041272795548534045.post-30232056805279035392012-06-12T22:09:42.005-05:002012-06-12T22:09:42.005-05:00Bob, saw your VAF posts about the break-in. MAkes ...Bob, saw your VAF posts about the break-in. MAkes since to me and coming from Mahlon is about a good of advice there is. <br /><br />Have some fun.Brian Cnoreply@blogger.comtag:blogger.com,1999:blog-7041272795548534045.post-34965746908536407282012-06-12T18:39:35.634-05:002012-06-12T18:39:35.634-05:00why on earth do you want to stall it ????? love, y...why on earth do you want to stall it ????? love, your sisterUnknownhttps://www.blogger.com/profile/16671302076835755896noreply@blogger.comtag:blogger.com,1999:blog-7041272795548534045.post-19391979655358288422012-06-12T17:39:58.358-05:002012-06-12T17:39:58.358-05:00HOORAY! I knew you and 4EF were going to bond jus...HOORAY! I knew you and 4EF were going to bond just fine. and just think when you come back to the hangar, she's right as you left her....waiting and wanting to go fly. Way to go Bob.<br /><br />BTW-I was told to keep MP as high as possible or comfortable(24") during the first 10hrs to help break in. Low MP can cause ring seating issues. That engine should be able to run 2700rpm all the way to TBO.Brian Cnoreply@blogger.comtag:blogger.com,1999:blog-7041272795548534045.post-48074114153952261812012-06-12T17:31:54.932-05:002012-06-12T17:31:54.932-05:00I know I've said this before, BUT...thank you ...I know I've said this before, BUT...thank you for taking us all along for the ride. I'm grinning too.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-7041272795548534045.post-58582917338717402632012-06-12T16:32:00.499-05:002012-06-12T16:32:00.499-05:00Sweet.Sweet.Anonymoushttps://www.blogger.com/profile/17187620655151227485noreply@blogger.comtag:blogger.com,1999:blog-7041272795548534045.post-4642018424557415952012-06-12T15:24:38.864-05:002012-06-12T15:24:38.864-05:00That is awesome! Hurry up and finish so you can...That is awesome! Hurry up and finish so you can take me for a ride!Brad Bensonhttps://www.blogger.com/profile/15950074080558099455noreply@blogger.comtag:blogger.com,1999:blog-7041272795548534045.post-43429130413764642192012-06-12T14:42:08.990-05:002012-06-12T14:42:08.990-05:00Wow, Part Two has such a happier ending than Part ...Wow, Part Two has such a happier ending than Part One! Congratulations!Greg Eppichnoreply@blogger.comtag:blogger.com,1999:blog-7041272795548534045.post-58685381670336432522012-06-12T14:37:39.761-05:002012-06-12T14:37:39.761-05:00Congrats, Bob! What a great story.Congrats, Bob! What a great story.snyde043https://www.blogger.com/profile/06323445615476388042noreply@blogger.com