Here is the build log for a RotorX Raiju (RX155) FPV 155mm Micro Hex. You can find more info about it on RotorX Racing’s website. This build log followed RotorX’s provided guide on the Lift RC website found here.
For this build I’m using Airbot mini 18a “Bearhug” ESCs . Since all my parts haven’t arrived yet and I couldn’t wait to get started I went ahead and prepared the ESCs to the frame.
When I received the motors I was surprised at how small they are! Unfortunately I did not order the RotorX motors because they were out of stock with no restock date i could find and due to my impatience and coming to the last week of my “staycation” from work I wanted to complete this build before shelving it for however long. So I opted for Eachine 1104 4000kv motors from Banggood. Supposedly Eachine, DYS and another company I believe RCTimer, got a hold of RotorX’s motor plans and have begun cloning them. Its highly unfortunate but like many other products in this hobby RotorX’s fell victim too. There is talk in the Raiju thread on RCGroups.com that RotorX is coming out with a new improved version of the motors… Once those start getting stocked and get good reviews, I’ll probably upgrade. I’m a sucker for improving. lol
This is the FPV cam I’ll be using. I purchased it from MyRCmart.com
And then in my excitement in seeing the end of this build coming close I didn’t take photos of my FPV cam, 5v Pololu step-down or MiniM OSD soldering! I’m sorry! I can go back and update this post with those if anyone is interested. But here is a photo of all things connected! 😀 I mainly referred to the build guide provided at LiftRC.com’s page for the Raiju.
With a 900mah MyRCmart.com battery.
So depending on battery used my thrust ratio varies from 3.08 to 3.19 to 1. Based on Eachine’s technical data for this motor showing 118g of pull on 3S at 3.5 amps and 44.4k rpm’s.
Another thing I like about this build beside how awesome it looks is the Minim OSD. I normally use Power OSD’s but for a build this size it didn’t seem logical. I recently discovered I can do PID tuning via OSD in my goggles with the Minim!!! How awesome is that!
My only concern is that withe the ESC wires semi exposed underneath the Raiju it may be a delicate multi rotor. We’ll see how it holds up during future fly’s. This was my most challenging build to date. But it looks so awesome!
Videos to come!