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Xpress builds a 115 AJ Laser - PICTURE HEAVY!

Discussion in 'Giant / Scale ARF Build Threads' started by Xpress, Apr 10, 2018.

   
  1. Xpress

    Xpress GSN Sponsor Tier 1

    Time to get crackin' on my 115 Laser. Beautiful airplane through and through :)

    First things firs,t get that glamor before shot on the table:
    30629084_10217006379098605_6222306957814923264_o.jpg

    The firewall already has a nice epoxy coating brushed on.
    30629085_10217006379578617_5624525476753047552_o.jpg

    S/N 110.
    30629827_10217006380418638_2682743595076681728_o.jpg

    Excellent construction quality.
    30581337_10217006381018653_5184276751794044928_o.jpg

    STURDY rudder tray.
    30516204_10217006381658669_4359576841221046272_o.jpg

    Down the TD.
    30629626_10217006382258684_264431945184706560_o.jpg

    Down the exhaust tunnel. I think I might even try filling it in this time!!
    30571876_10217006382738696_6416056106518315008_o.jpg

    SUPER nice hardware kit included.
    30516686_10217006383418713_1220647619831791616_o.jpg

    Assembling the LG. You'll need all of these fasteners from the LG bag.
    30516672_10217006384698745_7236635713230340096_o.jpg

    Assemble LG bolts in this order: bolt, lock washer, flat washer - flat washer, lock washer, nut.
    30571405_10217006385618768_985254644320043008_o.jpg

    BLUE loctite goes on everything! Especially with the ZDZ180 on the nose.
    30582358_10217006391978927_5252195358863261696_o.jpg

    LG bolted up. Covering has wrinkles, I won't touch any of it up for a few days because the wood needs to acclimate to its new environment first. A lot of the wrinkled covering on the bottom will be cut away anyways.
    30594657_10217006392658944_8129469309949837312_o.jpg

    Tailwheel uses 4 bolts, there were 4, 4-40 bolts in these holes when the fuselage came out of the box.
    30516758_10217006394618993_8319936729976930304_o.jpg

    2 things will ensure the tailwheel stays put: 1. Blue loctite, and 2. Bonded washers. I use bonded washers on just about every bolt.
    30594522_10217006396739046_6581275840468746240_o.jpg

    Blurry photo of the tailwheel installed. All 4 bolts are loctited and have bonded washers.
    30581866_10217006402499190_8503081746160418816_o.jpg

    Installing the rudder is easy peasy, just slide the rudder rod in place (it's installed in the rudder out of the box) and you're done. Will do horns later.
    30516298_10217006406419288_4318530440068595712_o.jpg

    Wheel cuffs have these nice plywood inserts to reinforce them.
    30571718_10217006407019303_7974825864246329344_o.jpg

    Slide them up the leg, butted up against the fuse.
    30530449_10217006407459314_7118730979690151936_o.jpg

    The LG already has the holes for these pre-drilled. You may need to make some slight adjustments.
    30656868_10217006407899325_8001665432706613248_o.jpg

    This was the point where I realized I ran out of bonded washers, will need to order more before bolting any of the cuffs/pants in place. At least I can mock them all up for photos.
    30531422_10217006408419338_4341296932128292864_o.jpg

    Assembling the axles and wheels.
    30572142_10217006409019353_4772944023004381184_o.jpg

    Spacing set, flat spots ground in.
    30531513_10217006409659369_592843368183103488_o.jpg

    Wheel in place. Blue loctite used on the set screws.
    30530556_10217006410219383_7317930871388897280_o.jpg

    Spacing to clear the pants.
    30623731_10217006410579392_3051724025022644224_o.jpg

    A little trick I lifted from a buddy, roughen up the axle end....
    30581653_10217006411419413_3821330530369011712_o.jpg

    Apply goop, foam tac, or some other goopy type of silicone based glue. Once this dries, the collet will never come off.
    30628914_10217006413299460_1370744812587712512_o.jpg

    That's all for now. Here's a poseur shot:
    30530736_10217002892491442_8551055689043148800_o.jpg

    Tucked away for the night. Will have to figure out how I'm going to fit the 105 in here tomorrow.
    30442638_10217002892851451_3150096269502840832_o.jpg
     
    stangflyer, Snoopy1, 49dimes and 3 others like this.
  2. AKNick

    AKNick 150cc

    1,070
    1,194
    113
    Alaska
    What a pretty bird! Thanks for sharing this! You are going to have to trade in your van for a bigger one here pretty soon buddy!
     
    stangflyer likes this.
  3. Xpress

    Xpress GSN Sponsor Tier 1

    Nonsense, I could pile a lot more in there!!

    24254779_10215822267416553_8503014365220504691_o.jpg
     
  4. Xpress

    Xpress GSN Sponsor Tier 1

    For this airplane I will be using the Hitec HSB-9381TH servos. These servos are the most powerful servos that you can buy in a standard size case due to their no-fade power output- unlike coreless digitals, whos torque can easily drop 200-300 oz/in when the load is applied to them.

    20180410_145919.jpg

    The only problem is these are the only 2 in stock and they're already going to another customer :oblong: More are coming early May :cryin::(:rolleyes:

    For throttle servos, I always use the HS-5565MH. I have had awesome luck using this servo as it's super quick, HV compatible, and its coreless motor is extremely accurate and smooth. Metal geartrain too, in all of the throttle applications I've used this in none of them have given any kind of slop. Since the ZDZ-180 carb is inside of the motor box, I use the HS-5565MH on the choke as well.
    HS-5565MH_servo.jpg

    For extensions, I prefer to use TailDragger RC for all of my extension needs. The wing harnesses use a MPX 10 pin connector that makes plugging your wings in super easy and quick, and the connectors fit extremely snug so there's no chance of it coming out in flight.
     
    Last edited: Apr 10, 2018
  5. dhal22

    dhal22 GSN Sponsor Tier 1

    I have the Hitec 9380TH's and they are amazing.
     
    stangflyer, Xpress and 49dimes like this.

  6. 49dimes

    49dimes Damn I'm hungry

    Nice! Nice! Nice!

    Seen this same combo fly down here. With your skills I'm sure you will "Waltz" with it in slow-motion :attaboy:.
     
    stangflyer and Xpress like this.
  7. What is the PAD used for or how does it work?
     
  8. Luchnia

    Luchnia 70cc twin V2

    Nicely done! Very sweet looking bird and excellent quality.
     
    49dimes, stangflyer and Xpress like this.
  9. What exact bonded washers do you buy? I would like to stock up on them! Thanks.
     
  10. Xpress

    Xpress GSN Sponsor Tier 1

    The PAD is a device used to soak up the regenerative current function of the brushless servos. Some switches or receivers won't let the current pass back into the battery so it bounces back to the servo- the backflow of current is 100% harmless and causes no harm to your equipment, but you will notice the servos may jump around center for a split second when they return from deflection. The PAD solves this as it is essentially a small capacitor that soaks up the energy and dissipates it.



    RTL Fasteners is where I buy everything from:

    http://www.rtlfasteners.com/RC/bw.html
     
    49dimes and pawnshopmike like this.
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