Taiser's Hummel H5 Build... Yes I'm at it again...!

Discussion in 'Member Project Logs' started by Taiser, Nov 15, 2015.

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  1. Nov 15, 2015 #1

    Taiser

    Taiser

    Taiser

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    Well... I finally started working on my H5 build. Started a bit later than I thought because the weather is holding out here and I'm still flying my 750 STOL! I think this will be the last week-end though. Getting to the point where I have to start pre-heating it, and that is just a PITA to do so I'll probably park it tomorrow... but we'll see. Today was nice, but they were forecasting high winds, which didn't happen :mad2: so I wound up starting on the new build instead of flying, so I started on the H5.

    Now I plan on making this a completely scratch build and I'm not in a rush (since I can fly the 750 when I get the bug :) ) so I'm hoping to get it done as near perfect and as light as possible. Some highlights I'm looking at doing on this build...


    Airframe

    I want it light and I want it slick, so...
    -Flush rivet as much as I can! It's not a bullet by any means but I like the look better so I'll solid flush rivet where I can, especially the wings.
    -Use titanium where I can, if it's worth the effort. I'll figure out how much 4130 is in the plane and figure out the weight but it's something I'd like to try.
    -The firewall will probably be kept as SS though. Titanium might just be too hard to work with to make tabs, but I'll check that out as well.


    Engine

    -I am looking at making this a turboprop, just too cool, even if it's impractical. But initially I'll probably put piston engine unless I can find a JFS-100 13a first for a good price during the build. I'm looking at putting a Honda in if I can find something suitable. Not a great fan of the VW conversions, but I hear it has good cooling in this airframe, so I'll look into that a bit more closely.


    Avionics

    -Looking at a MGL X-Treme EFIS with the engine monitor features. I've had good luck with the MGL in my STOL and am happy with it. The H5 has a very small panel so this should work out great.


    Conventional or Tri-Gear?

    -Not sure about this one. Apparently it works great either way but will be a hair faster without a nose wheel. If I go for a "fighter" look I'll probably go for the conventional. Probably better for a bigger prop as well.


    So hopefully this will keep me out of trouble and from going stir crazy this winter when the temp really starts to drop. This will probably take years to build, but should be a pretty fun project! :)
     
    Joe Fisher and steveair2 like this.
  2. Nov 15, 2015 #2

    Taiser

    Taiser

    Taiser

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    [​IMG]

    Starting off pretty simply. I bought a 4x8 foot sheet of 3/4" plywood for the forms. I also need to make a beam for the fuselage jig. I couldn't find anything to straight so I bought some particle board strips. Couldn't find any 12' so I wound up getting some 16' long ones. They will stay straight and make a decently solid beam once put together!




    [​IMG]

    Started assembling the beam. Pre-drilled the holes first just because screws can damage the wood pretty easily.
     
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  3. Nov 15, 2015 #3

    Taiser

    Taiser

    Taiser

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    [​IMG]

    Beam going together. Nice and straight.





    [​IMG]

    Done! Rock solid, kinda heavy and it's white to boot so will be easy to make marks on. I'll trim it once I start assembling the bulkheads.
     
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  4. Nov 15, 2015 #4

    Taiser

    Taiser

    Taiser

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    [​IMG]

    This section of plans is about 8' long!!! It's a page designed to be cut out and used as templates... don't like that idea, so...





    [​IMG]

    Bought some carbon paper...
     
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  5. Nov 15, 2015 #5

    Taiser

    Taiser

    Taiser

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    [​IMG]

    Tapped up the sheets big enough to cover the bulkhead patterns.





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    Need something smooth tipped to trace with. Rear end of a small brush seems to fit the bill.
     
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  6. Nov 15, 2015 #6

    Taiser

    Taiser

    Taiser

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    [​IMG]

    Double checking the template, you have to make sure you make the forms on the proper lines.




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    Started to trace. Used a ruler where I could but most of it is free-hand. Needless to say, took a while and really sucks, but it's not something you want to rush.
     
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  7. Nov 15, 2015 #7

    Taiser

    Taiser

    Taiser

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    [​IMG]

    Works pretty well!




    [​IMG]

    Another bulkhead. Lots of cutting to come!
     
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  8. Nov 15, 2015 #8

    Taiser

    Taiser

    Taiser

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    Finally found a use for the big-ass drawer in my new tool box! Perfect to keep my plans safe! :D
     
    Abraham Leket, mchesney, Joc and 5 others like this.

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