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IMAC Pattern - Cadence w/ DA 35

Discussion in 'Giant / Scale Scratch and Kit Build Threads' started by Alky6, Jan 6, 2019.

  1. dhal22

    dhal22 GSN Sponsor Tier 1

    I have some YS 60 short strokes that you can't have. Put some 30% in one of those and see something come alive. Incredible power.
    Alky6, 49dimes and Snoopy1 like this.
  2. Alky6

    Alky6 150cc

    Been doing some calc’s and looking at putting the 1” holes Mike suggested. To get the same result as what I had intended would require a few more than 150 1” holes. If I used 1/2” holes I would need to use more than 600! Haha. Great idea, but I am not gonna spend the time to plunge cut 1200 1/2” holes :eek:. Reinvestigating cutting the fuse sides down 1.5” versus the amount of wood and reinforcing required to make that happen weight wise. Also drew up a couple different renditions of firewalls to make sure there is plenty of fuse to tie to....

    Now, if I had one of these....... :fist_pump: Would have been solved a long time ago!!

    AKNick, 49dimes, Snoopy1 and 2 others like this.
  3. GSNadmin

    GSNadmin Staff Member

    If anyone needs some laser or router cutting let me know.
  4. AKNick

    AKNick 150cc

    For future reference, what format do the files need to be in?
    Alky6 likes this.
  5. Snoopy1

    Snoopy1 640cc Uber Pimp

    That would be nice to have one. I keep looking but the price is just to much.
    Alky6 likes this.
  6. GSNadmin

    GSNadmin Staff Member

    DXF, soildworks or dwg
    49dimes, BalsaDust, Alky6 and 2 others like this.
  7. Bartman

    Bartman Defender of the Noob!


    Are you adjusting the size of the plane at all for the engine? Based on weight? Wing loading? More than one thing?

    I ask because @WMcNabb was nice enough to bestow upon me an Evolution 26cc gasser and I bought a tuned pipe for it with the plan being to scratch build a pattern airframe for it. Probably something loosely based on a Kaos 90 but I can't seem to settle on a size. 73" is about a 30cc plane for 3D but I'd rather go a little bigger even if it means the power isn't enough to do 3D.

    Just wondering if there were any baseline rules of thumb that you applied or if you're building to the plans.


    (the engine didn't fit in the Cub Wade! not enough room for the muffler under the cowl without pushing it way forward)
    Alky6 and WMcNabb like this.
  8. Alky6

    Alky6 150cc


    No change in size for the DA 35. Has a 77" wing span - shooting for 10# dry. For comparison, my piedmont 2m focus had a 74" ws and was 78" long with a YS 140 sport (23cc). Thought it was underpowered as it would slow down on uplines. The Focus weighed in at 10lbs-3oz dry.

    What I am learning is the newer style 2m pattern planes continue to create more inherent drag requiring more hp (slower flights). This is in contrast to the old days of .60 size piped with retracts. The Focus had about a 4.75" fuse width. The Cadence is 6".

    Not an expert in this, but hope the information helps give you some context.
    49dimes and Jetpainter like this.
  9. Bartman

    Bartman Defender of the Noob!

    The Super Kaos 60 was designed to have three standard servos side by side so it's about that wide. I was going to make the 90 size but more narrow and a little taller. Probably not much wider than the engine mounts and spinner.

    Maybe I'll keep the fuselage the same length as the 90 but scale the wing area to keep wing loading about right for the heavier engine and bring the engine back a little for balance.

    Sorry to hijack your thread but there aren't very many gasser pattern build threads out there! Long live GSN!!
    AKNick, dhal22, Alky6 and 2 others like this.
  10. Alky6

    Alky6 150cc

    No problem, and yes not many gasser pattern plane builds! So.... build thread here too? I would love it!
    49dimes and Jetpainter like this.

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