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Activity Stream



  1. ChrisBolkan added a post in a topic Odyssey PC545 differences   

    Yes MJ = Metal jacket. The metal jacket is just a metal box that the battery fits into. The metal jacket can also be used as a battery box. The battery is the same whether it is slid into a metal jacket or not. The metal jacket adds a bit of weight, so if you already have a battery box it is not necessary. The difference between the power sport and the other version I do not know. Could be the terminals. If you get the MJ version, you can always slide the battery out of the jacket and use it that way.

    I use the PC 680MJ because I do not have a battery box. It is pretty small and light and packs a whallop for its size. No problems for two years starting my 0-320 winter and summer.

    Chris
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  2. 4aplat added a post in a topic Odyssey PC545 differences   

    Hi

    2 ref in the odyssey catalogue

    same spec for the pc-545P and PC 545 MJ P

    MJ = metal jacket
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  3. akflyer added a post in a topic Odyssey PC545 differences   

    When I got mine I found it on flea bay for 89 bucks delivered to my house in AK from Florida. Not sure on the differences. One thing I have learned, especially in the cold weather. The battery is not a great place to save a couple pounds. Get the biggest capacity you can within reason. I run the 625 and she has never let me down, even at -30.


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  4. FoxDB added a post in a topic Odyssey PC545 differences   

    I was only able to find (2) 545's. The difference seems to be size and what motorcycles they fit.
    http://www.odysseybatteries.com/battery/pc545.htm
    http://www.odysseybatteries.com/battery/pc545mj.htm
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  5. C5Engineer added a topic in Avidfoxflyers General Hangar   

    Odyssey PC545 differences
    Does anybody know the differences between the PC545, PC545 Powersport and PC545MJ? I am finding very little on the specs page. Amazon has the 545 Powersport on sale for $109 right now but I want to make sure it's the one I want as they have three 545 versions on there for 3 different prices.
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  6. akflyer added a post in a topic 582 was over heating   


    I am kicking myself in the butt for not having it done already! Last kid graduates next month, then its time for me to focus on me and the toys instead of the kid's!


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  7. EDMO added a post in a topic C-box ratios   

    Randy, I have to get my fuselage to the welder this week for mods. Will look in my schoolbooks and see what is written on the MAP and hopefully copy it and post it if usefull - Have my doubts tho, because they only concern the old long-stroke engines, running like 24 Map / 2400 rpm, etc. Dont know how that converts to our modern short-stroke efficient engines.
    Ed in MO
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  8. EDMO added a post in a topic C-box ratios   

    A note from a dum ole machinist who knows nothing about etronics: sometimes a 470 ohm resister is used in front of a LED.
    Dont know what this means - but 2 cents worth.
    ED in MO
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  9. Bandit added a post in a topic 3 blade or 2 blade prop   

    Yes, you are right. My airspeed is off about 7mph. At 76 IAS, my ground speed is around 69mph. I am using a Tiny Tach for rpm. I am going to try pitching my prop down so I show around 6350 on takeoff. It seems if I keep my IAS above 76 my airplane flys so much better, anything under it seem's sluggish. Can I run the 503 at 6000-6100 cruise? Would it be any advantage to use a C gear box, with a 3.47 ratio turning a 72" 2 blade prop?
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  10. EDMO added a post in a topic C-box ratios   

    Randy,
    Not saying you are "wrong" on your figures, but "WOW, those are totally LOW compared to what I have read about the Stratus.
    I know that the cam regrind raised the torque, but the figures I have read are more like 4800 static/cruise and 5600 unload.
    Maybe you need to contact Stratus, as I think you are running this engine under-powered with the WD.
    Of course, I am like the blind man describing the elephant in this case.
    Are you running the Soob computer? Mine is old tech, timing set at 28 BDC, two-brl Holley carb, point distributer.
    Maybe check your timing, dwell?
    I dont have the HP as yours is advertised. Yours is supposed to be 115. Mine is somewhere between 80 and 100, and the heads have been milled .040, but dont know if the cam has been reground.
    Owner said to set my WD at 10 degrees - guess that is with the protractor from WD. However, I did not get the prop with the engine.
    Mine was supposedly run at 5400 and a prior owner "blew the crank". A new or regrind crank was installed and the heads milled.
    The seller said, "Don't even go there!" And, I don't plan on pushing it that much, He sold it because it was too heavy for his Pelican and two people on floats. He bought a 912, 100hp to replace it.
    Anyhow, just had concerns about your figures not being the same as I have read about the Stratus. Hope you check on this.
    Many thanks for the WD info.
    Good Flying, ED in MO
    P.S. I just went to Stratus 2000, and they are saying 100hp @ 5400??? (Of course, if you want it to last, then run slower, IMO.)
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  11. akflyerbob added a post in a topic 3 blade or 2 blade prop   

    I think I would look at other things.
    If you have enough pitch in the prop that you only get 6050 on take off
    your cruse should be higher.
    I think I would look at the IAS,
    what tach and how accurate.
    Are you getting full throttle, and ballanced carbs
    Are any of these things different than before?

    An example..my airspeed will change by 20mph if I open the door
    or 10mph if I close the heatmuf vent..changes the air psi
    in the cabin
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  12. Bandit added a post in a topic 3 blade or 2 blade prop   

    Could I take one blade off and try it as a 66" 2 blade or is that to short?
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  13. Av8r3400 added a post in a topic Happy Easter   

    Same to you and yours and all of the family here at AFF.
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  14. High Country added a topic in Hangar Talk   

    Happy Easter
    Just wanted to wish everyone a very Happy Easter. I hope you all have a good time with your families today. Jesus Christ is risen and is alive and well to day!!! Praise God.

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  15. C5Engineer added a post in a topic 3 blade or 2 blade prop   


    2 blade 70" warp tapered tip 2.62:1...1100fpm climb at 6350rpm cruise at 85mph at 57-5800... at 6100rpm cruise was 93mph. I pitched it for 6000 at climb recently and I picked up 10mph indicated. I could hit 100mph in level flight fairly easily but my climb suffered quite a bit. You guys with IFA have it made!
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  16. EDMO added a post in a topic C-box ratios   

    Randy, Thanks for all the WD info - I am going to print it for future reference.
    As for the MAP gage, I think you should ask Stratus what they recommend.
    The MAP gage will read atmospheric pressure when the engine is not running - you can check it with the local Pressure.
    Anytime the engine is running, the MAP will be less than atmospheric pressure - unless you have a turbo, and there you can get into more trouble. Will have to get my school books out to tell you more than that. I,m sure there are some pilots who know more than I do about MAP.
    I have 2 or 3 MAP gages, different sizes, that I would sell cheap - not familiar with your choice of gages, but will check Spruce.
    Got to hide eggs tomorrow. Happy Easter.
    Ed in MO
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  17. SuberAvid added a post in a topic C-box ratios   



    Hi Bob,
    Hope you found it; if not it is on the first page of this post that Chris says the diagram is a post he did on the Yahoo Avid web site. I managed to find it after browsing around on there a bit. I wish I could get my scanner to work with this new computer and I would post the modified diagram using two automotive 5 pin relays to replace the manual IVO switch so it is controled by the micro-switches on the stick. The relays just take the full motor amperage when you to trigger them with the stick switches, and one for each polarity direction to the motor; otherwise the wiring diagram is the same and the LED lights are wired parallel to the polyswitches as per the diagram.
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  18. SuberAvid added a post in a topic C-box ratios   



    Ed,

    I assume that that tap in to the manifold is in the intake manifold behind the carbs? I have a balancing tube between the intake manifolds on my motor; can I put a tee in it for the line to run to the manifold pressure gage? I used to have a vacume gage on a couple of my past rigs and if I remember correctly the line was run from a port somwhere at the base of the carbs. It seems like this would be measuring the same thing so is the manifold pressure gage measuring absolute presure instead of gage pressure which would be a negative (vacume)?

    Also, what would be the "correct" pressure for the Subaru in cruise at 3800 rpm?

    I looked up a manifold gage on the MGL web site and they are $270 so not too bad. I have all MGL gages in mine and I really like them.
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  19. saskavid added a post in a topic 582 was over heating   

    HI Leni:
    Glad to hear you got it sorted out, but I really wanna know when you are going to get that horsepower barking artic cat sled motor horseshoed under the cowling and start really chewing some holes in that Alaska sky?!

    Mike
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  20. SuberAvid added a post in a topic C-box ratios   



    Hi Ed,

    With the Warp Drive I was running the 72" 3 blade square tip with the HP hub. My Stratus redrive is 2.2:1 so you will have to do some conversion to see what you would have for prop speed at your rpm or RPM at the same prop speed. I found that for me the best pitch setting was 14 degrees at the tip. I set mine with the blade horizontal and lined it up with my horizontal stabilizer; the degrees is the difference between the prop hub face and the tip. At 14 degrees my takeoff RPM was 4250 and climb was around 700 fpm solo. At 14 degrees the cruise that I typically used was 3850 RPM and that was about 80 mph and it burned about 4 gph. If I backed off to 3600 rpm it was about 70 mph and burned around 3 gph. It would fly just fine at 3400 rpm and burned around 2.5 gph. When I ran the cruise RPM up to 4000 it would burn around 5 gph but it didn't seem to get much additional speed; it would only get to around 82-83 mph. That is why I am so amazed that the IVO gives me 93 mph when I crank the pitch in at 3800 rpm. I know the blade shape on the IVO is much different than the Warp Drive and the IVO is much more flexible than the Warp Drive; it is very soft in comparison so I am sure it is not nearly as strong as the Warp Drive.

    With the 1.84:1 redrive I think you will probably need to pitch your prop closer to 11 or 12 degrees to get your RPM where you need it to be. 3800 RPM is about the max torque for the EA81 and that seems to be where it is happiest in cruise. It is a whole lot different than the 582 in cruise which as others have said on here, changes rpm constantly with the changes in wind ; headwind/tailwind/turbulence, etc. The Subaru just purrs along at the same rpm no matter what you are getting hit with in the air.
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  21. akflyer added a post in a topic 582 was over heating   


    I have the belly mount and cowling from you on it.


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  22. Av8r3400 added a post in a topic 80 Yr old woman lands plane after husband has heart attack   

    Years ago She had taken lessons through solo but net got her license.

    Never the less she did an amazing job.
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  23. jackak added a post in a topic 582 was over heating   

    Leni,
    Which cowling and radiator were you using when she was running cool?
    Jack
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  24. EDMO added a post in a topic 80 Yr old woman lands plane after husband has heart attack   

    Wonder if her husband ever thought about sending her to the "pinch-hitter course" that at least teaches a non-pilot how to use the radio and instruments and hopefully have some landing skills? This was a great course, IMO.
    Yes, she is a trooper!!!
    Ed in MO
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  25. EDMO added a post in a topic 582 was over heating   

    My father was a gunsmith, machinist and toolmaker. I was raised in a machine shop. When I got my toolmaker apprenticeship, an old toolmaker wisely told me, "Everyone makes mistakes. The secret to being a good toolmaker is to be able to fix your F-UPs before anyone else sees them." Of course, we often warn others about the mistakes "we have been told about or seen".
    Congratulations of fixing your F-up all by yourself. (and warning others)
    Ed in MO
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