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Bill Hempel Yak 55

Discussion in 'Giant / Scale ARF Build Threads' started by HRRC Flyer, Feb 26, 2019.

   
  1. dhal22

    dhal22 GSN Sponsor Tier 1

    Same, always wanted one. Someday.
     
    pawnshopmike, HRRC Flyer and AKNick like this.
  2. AKNick

    AKNick 150cc

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    Don't worry about it! Even some come with heat shrink to protect the center conductor (aka Antenna) coming out of the gray shielding section of the coax. It covers about half the exposed antenna.
    I also saw that one of your antennas appears to be kinked. I had one kink recently on my 7014SB that you probably saw in a recent post. Any kink coming from a coax will create some sort of reflected energy back to the receiver, luckily I don't think it matters too much with the exposed portion of the non-directional antenna. Impedance may have changed depending on the extent of the kink. I have found that there are plenty of 150mm IPEX port antennas on ebay, and as long as they did a good job building them a guy could change a matched set with equal impedance, meaning the OAL and exposed center conductor is the same length. The IPEX ports snap on and off for an easy swap. Like I said, You are probably fine. Mine bugged me like crazy, so I took a sacrificial receiver and borrowed the antenna from it. FutabaUSA told me there would be a six-seven week turnaround time to change the antenna which they did not have in stock... but only if I had proof of purchase or the US FCC sticker was still there.
     
  3. AKNick

    AKNick 150cc

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    I'll hop on that "always wanted one" train too. My first gasser was almost a Redwing Yak-55, those guys were willing to drop ship from china to me... ended up with an AJSlick. At any rate, the Yak-55 is one cool bird.
     
  4. dhal22

    dhal22 GSN Sponsor Tier 1


    It has a pattern plane look to me so there's that.
     
    HRRC Flyer and pawnshopmike like this.
  5. HRRC Flyer

    HRRC Flyer GSN Sponsor Tier 1

    Well Fella's,

    What was left of Hurricane Dorian, kept me out of the shop this afternoon. There was a little bit of moderate wind this afternoon, but quite a bit of rain. Tomorrow morning is going to be spent at my Buddy's house trying to nail down the flooding problem I'm still having on my DA-50. We are beginning to think the metering valve in the carburetor is sticking. If there is any time to work on the Yak tomorrow afternoon, that is what I will do. Hopefully, Sunday will be dry enough to fly my Extra. . . . .:yesss:.
     
    Snoopy1, WMcNabb and pawnshopmike like this.
  6. HRRC Flyer

    HRRC Flyer GSN Sponsor Tier 1

    Howdy Fellas,

    As busy as I was this weekend, I managed to put a few minutes into working on my Yak. I decided it was time to go ahead and mount the ignition module for the red headed Beast. I decided to install it on the top hatch of the motor box.

    Yak 86.jpg

    I talked to my flying Buddy about mounting the ignition module. He told me he has mounted all of his modules like this.
    Yak 87.jpg

    That's a 2-56 bolt going through to a blind nut on the bottom of the top hatch. There is also a washer above and below. The fuel tube acts as a vibration isolator which is why the bolts are not cinched down tight. The ignition battery is also mounted, but I still haven't made up my mind where I am going to put the switch for it. I need to get this plane done so I can have something to fly. The covering is really starting to come off quite badly because of age and I am getting leary of flying it any more until it is recovered. Hopefully I will get some time to work on it in the evenings this week.
     
    Snoopy1, dhal22 and pawnshopmike like this.
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