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ZMR-X Custom ZMR Build

As FPV racing matures, new rules and classes are put into place. One of the rule is the “250” size racing quads need to stick with 5″ props. To breath new life into those of use who has the popular H-style ZMR250 frame, I came had an epiphany and learn that you can configure it to have the motors in an X style configuration. Where roll and pitch are exactly the same.

Beyond that…I had a few wish list items I challenged myself with. I wanted all the weight shifted to the center of gravity as possible. Including the lipo…which is the holy grail IMHO. And one day, frame designers and engineers will take this concept more seriously. In the case of us local guys that is racing with the ZMRX…it’s a 4S 1000mAh pack. For me, I like agility for racing tight tracks…so a 3S 850-1000mAh LIHV is ideal.

So begins the next step of the ZMR Lite build

I think more fun to come up with a design where others can easily follow along with their own frame. So I played with where the existing holes lined up into a perfect X. And then figured out how to cut so it’s easy for others to do. In the end, you essentially “connect the dots” for the most part.

ZMRX_center_plate

Prototype #1.

daryoon_ZMR_racerX

Messed with it some more in SolidWorks…

ZMRX2

Frame currently looks like this now. Fellow local Team WarpQuad squad is building one. Will update with final build pictures of his and mine at a future date.

Daryoon_ZMRX

Here’s a photo I took before the new antenna plate. Figured it would be easier and more robust with 3D printed antenna mounts.
daryoon_zmrX_1000mah_3s_lipo_hacksmods

Some ppl have been asking about my arm mounted ESC treatment…so here’s a closer look on how I do it now. It consist of mylar tape in the color of your choice. I like red. It’s thin, so I feel the FETs can exhaust the heat quicker through this type of covering. Follow by a CF vinyl weave. I use my Silhouette machine to cut it out. The ESC is secure mounted to the arm with Scotch Exterior Mounting Tape. Then cut a strip of Self fusing silicone tape. I wrap the wire/soldered joint and around the arm. The silicone tape only sticks to itself. Holds strongly. And I can easily remove to access the ESC for repair/maintenance.
daryoon_hacksmods_esc_arm_treatment_wrap

And a couple of shots from the second ZMR X I put together…

Built with parts I have on hand. So a rev2 AfroMini 32. The new AfroMini 32 rev3 that I used on my ZMRX #1 is even easier to use.daryoon_zmrx_afromini_fc

A look at the the rear where the plugs come out of. The receiver and VTX are attached vertically to the XT60 on the 10mm standoffs. The XT60 mounting board can be purchased at BangGood for $1. Or $1.99 with the XT60 soldered. I like the bare plate and solder on my own black, XT60.
XT60_mount_and_wiresdaryoon_zmrx_weight
I plan on designing a top plate that doubles as a action cam mount for GoPro or Xiaomi Yi camera. This will put the camera at the COG, so you can record your flight without making the quad’s handling too bad.
daryoon_zmrx_pdb_version

LED light ring. Color selectable via dip switch on the board.
ZMRX_light_ring__hacksmods_red_LED ZMRX_light_ring_LED

1st rev of the antenna mount… may add more features to it.
zmrx_antenna_mount

One without the VTX since the current build recommendation has the VTX antenna sticking straight out the rear. So it’s protected by the arms. And still give a good video feed during fast forward flight.
zmrx_antenna_mount_no_vtx

CAD and STL file download:

Update to add (2016-02-08) MultirotorMania has their Switchblade FPV quad frame design that I recommend to those who doesn’t have existing ZMR50 frame…or don’t like to mod their own frame into a X configuration. Perhaps built it with the ZMRX concept would take it to the next level.

Here’s a video of me cutting the plates in realtime to show you the amount of effort it takes so you can make a better decision to tackle this project.

Categories: Builds, Quadcopters, ZMR
39 Comments on ZMR-X Custom ZMR Build

ZMR 250 Lite Build

daryoon_zmr250_flight_controller_access_hatch daryoon_zmr250_flight_controller_programming_header daryoon_zmr250_fpv_pod daryoon_zmr250_fpv_pod_front daryoon_zmr250_fpv_pod_front_angled1 daryoon_zmr250_fpv_pod_fronttop_angled

daryoon_zmr250_fpv_pod_tilt daryoon_zmr250_lipo_battery_connector_and_distribution_center  Dimon372_599791_zmr250_bumper_big_side_shielding  ZMR250_KISSPDB_KISS_ESC Daryoon_ZMRLite_250_LED_inside_afromini_amaze Daryoon_ZMRLite_250_FrSky_X4R-SB ZMR250_KISSPDB_SN20a_ESC

Alternate configuration with the battery plate. Allows more space to hide things.
daryoon_zmr250_double_deck_configuration

Categories: Builds, Uncategorized
20 Comments on ZMR 250 Lite Build

Soma’s WarpQuad

Just gonna share photos of the acro quad I am building. Thanks to Soma for coming up with the WarpQuad. Looks the best out of all the acrobatic quads out there.

Here’s the center frames. It sandwiches the 4mm carbon fiber legs.

soma_warpquad_center_plate_ninja_stars

 

I switched out some of the hardware. Such as the aluminum washer below. And used power cables that comes attached together. For a neater run of the brushless motor wires to the center of the WarpQuad.

soma_warpquad_motor_wire_routing

 

Another change from the standard build out. I added 1.72mm washers so I can run the 22guage motor wire underneath the top plate.

 

soma_warpquad_flat_motor_wires

 

Then I modified the XT60 lipo connector so that it can be sandwiched between the frames. Filed down the connector so it can conform to the curve of the top plate.

soma_warpquad_XT60_connector_location

 

You can see where the power distribution harness will solder to and subsequently run to each of the ESC.

soma_warpquad_XT60_connector_location_topdown

Those were the early photos. These upcoming photos are where the WarpQuad build out is at now. It took forever to source red aluminum washers with the same bevel as the blue ones I had on hand. Still not perfect but very close. The aluminum TeeNut that the frame is resting on is just to temporary hold the arms in place. And make it easy to disassemble without tools. This frees up my hand to ensure the cable runs are neat and nothing is pinched.

I switch to button head screws. Red aluminum 5mm. The hex size will take the same allen wrench to be consistent with the rest of the screw head used on this quad. The four button head should be strong enough to secure the motor.

daryoon_soma_warpquad_build_motor_6mm_red_aluminum_button_head_screw

 

Here is a closer shot of the red washers and where I intend on placing the ESC. In the center of the quad instead of on the arms like the reference build out by Soma.

daryoon_soma_warpquad_build_countersunk_screw

 

A look at the cable run and how it meets up with the brushless motor. I created a stagger cut because I didn’t want to seperate the wires to fit heatshrinks. The stagger will keep the wires from shorting. As extra precaution, I applied Liquid Electrical tape to insulate. Then follow by a larger heatshrink to cover up the area. To dress up the heatshrink…I used chrome tape and nail art tape. This brings some blink down to this end of the arms.

Additionally, I hope the chrome take will help reflect some of the LED lights up to the props once I place one there.

daryoon_soma_warpquad_build_motor_wire_dressed

 

Here is a look at the stagger cut I mentioned before. Some folks have asked why I choose to use four motor wires when brushless motors only require three. The simple answer is for symmetry once it gets to the center of the frame and have to go to the left and right of the screw.

daryoon_soma_warpquad_build_motor_wire_stagger_cut2

 

The quad is ready for the ESC to be soldered on. Easy to do. However, I need to figure out how I want to route the power wires and still have room to fit the Flight Controller between the frame. There’s really no room for both. :)

daryoon_soma_warpquad_build_frame_red_aluminum_washer_sunnyskies

 

added August 13, 2014: Check out the complete rev1 build here… http://www.rcgroups.com/forums/showthread.php?t=2176239#post28508149

2 Comments on Soma’s WarpQuad