patrickf

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About patrickf

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  • Gender
    Male
  • Location
    Brisbane, Australia
  • Interests
    Anything Flying, Science & Sport
  • Reg #
    VH OVH
  • Model
    M20R

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  1. Thanks Anthony, Still working fine, and I do have working versions for the 310 STC and the J's. Need to clean them up and issue. Busy at the moment completing an IFR rating - can't get distracted! @midlifeflyer - couldn't agree more. My sheet uses plenty of significant points to do the calcs but back to one decimal to output - to match the POH numbers. In practice I know a couple of the numbers and go to adjust to close unless I am in cruise and have plenty of time. I do check landing speed, and takeoff distance if I haven't had that config, or that strip before. Then again we aren't the guys that carry rulers onto a football pitch ? regards, and stay safe.
  2. + another one for those figures. On a trip @ 8000-10,000 I'll run wide open throttle, 2500, ROP leaning on EGT on the climb. Once on top I'll leave it and let it get some speed up then set rpm to 2400 and do a mixture pull to around 12.3 gph (65%) and let it settle down. I'll plan 165 (we are generally ISA +10) but this typically gives ~168kts. If I want to go a bit quicker I'll go to 2500 (+4%) and for more go closer to peak keeping an eye on the numbers. At 8000 + there's not much you can do to hurt the engine as you don't have the MP . I generally leave that mixture setting alone until short final and vary power on rpm or MP. One of our guys does do flat cruise climbs LOP for long trips and doesn't see any temp issues. If I'm on a low level sight seeing trip I'll still pull to LOP but make sure I've only got 22-23 MP. Once set LOP I don't have any issues varying MP and/or rpm and staying smooth while keeping cool.
  3. Thanks for the tip @flyingcheesehead I haven't tried that option but will give it a try. regards PatrickF
  4. You're right there is a fair bit of asphalt on the taxiways but it's not as flash as it looks in Google Earth ! Some of the grass is pretty rough too. We've had a number of conversations and would much rather be on a long bitumen strip. One of the big worries is how those fuel tank seals like getting regularly shaken on the grass. regards PatrickF
  5. All good @steingar - you may have missed it - we have another 4000 ft of grass after the tar before we get to trees. Just a fun challenge to get off and avoid the bounce on the grass ! regards PatrickF
  6. @carusoam - Crossed info - we are at sea level (40') at YCAB ! 800 foot of tar is just enough to get off if I'm solo with about 25 gallons on board - and not much else. And the sea breeze is usually good for a few kts. Grass at 5000' - now that would be a different game ! One advantage we do have here - we are pretty flat. I did the calc at 5000 to check my numbers against yours for the grass chart you have and it seems to match pretty well - which gives me some confidence on the factors quoted on that web site. regards
  7. We operate a long body O2 off grass in Aus. A lot of Mooney guys here would -the tar strips can be few and far between. No real issues except you do lose elevator authority when you get slow so need to get it right first time and catch the mains to look after the front. We have 800 feet of tar on one runway (YCAB) which we take any time we can. Can get off one up and light without using the grass but haven't managed to land on it yet ! I don't have any grass numbers in our POH so when I was doing my XL sheet I used these factors for ground roll - once you are off it doesn't matter: https://www.experimentalaircraft.info/flight-planning/aircraft-performance-7.php - I'd stay away from the long wet grass Anthony @carusoam my numbers come out to close to your book for short dry grass - certainly within the margin for error for the graphical/fat finger method ! Off POH Graph Takeoff Distance 1539 ft Takeoff Dist (50') 2928 ft Surface Dry short grass 1.1 Takeoff Distance 1693 ft Takeoff Dist (50') 3082 ft PatrickF
  8. Guys, I can't argue with X-plane and I've heard it's good. I was too invested in MSFS to change. Since I started flying in '97 (MS95?) I've tried to get a copy of any new plane I've flown, customise as much as I could, and check the basics. Certainly helps with rough numbers and panel layouts etc. Because I was tied to the MSFS world I jumped over to Prepare3D from Lockheed. It is very good and getting better, and I got to keep all my work. For anyone flying Garmin GNS or GTS I can't recommend RealityXP : http://www.reality-xp.com/ too highly - they have an Xplane version as well. Since we bought OVH I've put a bit of extra work to get the sim model as close as I can. This model is a stock P3D Acclaim modified with Mindstar G1000 and RealNAv data, custom performance data and custom textures. As real as it gets ? When the weather is really ordinary I just put in some IFR time at home. Practicing button pushing on the ground in the sim is a lot cheaper than burning gas. The instruments and add on GPS simulators are very good now. My full setup is probably less than 2 AMUs. The real trick is not to geek out too much and make sure you fly rather than fiddling with your set up - a challenge I occasionally fail!
  9. I like where you are heading here @carusoam - start with the book numbers and check against reality given the info we now capture. It was something I remember doing with the instructor in the C150 on about my 4th hour - check short field takeoff against the book. We used the cross runways and taxi entrances as the check points. Having said that a 150, 2 up, in summer in Canberra at 1800 ft elevation gave us plenty of time to check the lift off point ! You've prompted me to check the M20R against the book more carefully. We have a cyclone off the coast so no flying this weekend but I've done a quick desktop check. Our home strip YCAB only has 250m (780ft) of tar before the grass. If I'm one up and only 30 gal of fuel I can just get the wheels off before the tar ends (without doing a static full power, release brakes etc. short field takeoff). The book number on a typical day with 5kts of head is 628 ft. Given that I probably waste 40 ft rolling on and 50 ft with the rolling "soft start" the book numbers look close but a bit wishful - you'd want a good margin on these. PatrickF
  10. Guys, just caught up on this one. Thanks for the heads up @carusoam @midlifeflyer I am happy to generate a set of "Cessna style" tables. Will be pretty easy to pull automatically out of my sheet, and you are right they would be useful. My sheet just does the calcs on digitised versions of the charts, and draws over to confirm visually that results make sense. It is at least as accurate as doing it with a pencil, or thumb. I am working my way through the various models but am way behind on my promise to complete the set - dam work. I've just looked at the POHs I have and my M20J one has the table version rather than the chart. I've attached. Is it an earlier version ? PatrickF
  11. @Awful_Charlie That sheet looks in great shape, I'll cross it off my list. regards
  12. @laytonl Lee, thanks for the shout out. You beat me to it! I have a work in progress J version of my excel sheet and Open App using the same technique as the M20R one. I picked the J as one I had to do on the basis of how many are out there ! - and here in Aus. Have others in various stages as well - gets easier as you reuse the code. @Deb Debbie & David have been unbelievably thorough and helpful with some very detailed beta testing and feedback on the original XL sheet and App. The M20R App changes are live and I'll issue the final updated XL sheet with the rest. @mike_elliott also had got me POHs for the new models and I'm working through them - a fair bit of cross over between models which makes it easier. @carusoam - Anthony - I have a working version of your 310 STC option including the power charts. Just got to smash a couple of pesky bugs. @Awful_Charlie has sent me the charts for the M20M so it's on my list as well. Intention is to get them done as a job lot so I don't do multiple posts but keep to the concept ( in my case) of providing a simpler way to pull book figures (and cross reference original POH charts) Now if I didn't have to work to pay for the Avgas these things would happen quicker ! PatrickF
  13. Harden up Mike - you should try it with 4 kids ! Great to see you out in Aus
  14. Robert, agree - ours doesn’t either ! The aim of my sheet was to make pulling numbers from the POH charts easier to do if you need to and as a cross check. The app does the same thing. Perhaps if I add a % adjustment to the book number that you can leave set, or change ( like I have in the take off/ landing distances) Suggestions welcome. Sorry for the delay -we have our PSP program this weekend in Bathurst NSW. I was doing my homework. Regards
  15. Mike, Saw that one drop on Friday. I think I'll leave that one for the OzRunways boys! You have prompted me to add a disclaimer. I've done the spreadsheet as a way to go back to the POH for a cross check, or the app to do those quick checks. The EFB guys do a great job of the detail planning. Look forward to catching up next weekend. Have a good flight over.