New Build TREX 700xn | Forum

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Andrew Webb Treasurer
Andrew Webb Jul 22 '18
I have my new project coming soon.... looking to build my Trex 700xn 

I will be putting an OS105 HRZ in with a MRSI tuned Diamond Carbon Muffler(blue) in it. Planning to run 20% Nitro. 


Will be using MSH Brain FBL and Spektrum setup.


The Un - Boxing of the power plant and the contents that come with the engine. 



The manuals are about the only complaint that I have around the whole package. They are one dimensional and printed black and white paper. However this is not too much of an issue as I usually download the manuals onto my Ipad.



In the box itself is the glow plug and the one way value for the tank compression. Goes between the base plate and the tank. With the muffler I chose, there is no option to hook up the tank compression to the muffler. So the HR-Z would be the only motor that would work for now.


The contents of the box are very interesting, with the engine being wrapped with plastic. Included is glow plug, check value, Velocity Stack and Head Gaskets (0.1mm and 0.2mm). 

The next set of photos is a series of the engine itself. I took from a number of angles that show the quality. I am in love... Almost want to mount it in a glass case as a display piece.

  


The second part is the muffler that I ordered. Now this muffler is supposed to be the quietest on the market with out the compromise in the performance. (Read this piece on line, so is not confirmed). So here is the un-boxing of the muffler all the way from Italy...




So first out of the box is the mounting items to fit on the O.S. Power plant.




Next out the muffler - Wrapped in a towel.




The Italians make the most beautiful stuff... Customer service>>> Not so much. Had to fight them for this...





WOW - Really want to get this into the air... Did a dry fit the engine and the muffler to see what it would look like.






Really want to start with the build ASAP.... Next up is the un-boxing of the kit. 


Really well packed kit...

\





First box out is the "Main rotor head set", which tore a little while trying to extract. Included in the box was the head, main shaft, main gear, frame hardware, tail rotor parts and blades, fan housing and the gear for main drive.














And then there was the head itself... Not ready to build so did not remove from the packets.




More to follow.


The Forum post is edited by Andrew Webb Aug 9 '18
James Roney Chairman
James Roney Jul 25 '18
Nice looking project Andrew!  You are the camera man, so give us a step by step picture progress post!
Andrew Webb Treasurer
Andrew Webb Jul 25 '18
Was going to do a part by part and step by step picture build... Want to take my time with this one... With pictures.Going to to be amazing. I find builds are over too quickly and I really want to stretch this one out.
The Forum post is edited by Andrew Webb Jul 25 '18
Andrew Webb Treasurer
Andrew Webb Aug 9 '18
The next box that was unpacked is the "electronics box" which includes the following: 3 x Cyclic Servos DS820M, 1 x Tail Servo DS825M, one throttle servo DS530. All servos are High Voltage and I will post the specifications. One governor sensor and B6XT 2 in 1 Voltage Regulator Regulator.







DS820M Specifications: 

Torque: 7.4V: 305 oz/in (22kg.cm) | 8.4V: 320 oz/in (23kg.cm) 
Speed: 7.4V: 0.06 sec/60 degrees | 8.4V: 0.055 sec/60 degrees 
Input Voltage: 
6v-8.4v 
Temperature Range: -20*C - 60*C 
Dimensions: 40x20x39mmm (LxWxH) 
Weight: 80g 


DS825M Specifications: 

Torque: 7.4V: 138 oz/in (10kg.cm) | 8.4V: 173 oz/in (12.5kg.cm) 
Speed: 7.4V: 0.03 sec/60 degrees | 8.4V: 0.02 sec/60 degrees 
Input Voltage: 
6v-8.4v 
Temperature Range: -20*C - 60*C 
Dimensions: 40x20x39mmm (LxWxH) 
Weight: 72g


B6XT 2 in 1 Voltage Regulator Specifications:


Input voltage: DC7.4V 2 Cell Lithium or Li-Poly battery

Output Voltage: DC7.4V(BEC)/1.5V(Glow Plug)

Max. Continuous Current: 6A

Weight: 53.5g (Including Wires)

Regulator size: 80x30x13.3mm

Control Board size: 35x24x10mm

The Forum post is edited by Andrew Webb Aug 9 '18
Andrew Webb Treasurer
Andrew Webb Aug 9 '18
The next box that was pulled was the Canopy box. In the box was the following: Canopy, Carbon Frames, Fuel tank, landing gear, blade holders, Manual and a new Align towel.












Andrew Webb Treasurer
Andrew Webb Aug 9 '18
The final box in the kit is the "Main Blade" Box. This box contained the tail boom, tail supports, torque tube, and main blades...






Stay tuned for the build... coming soon...

Andrew Webb Treasurer
Andrew Webb Aug 10 '18
Final un - boxing for the project. The MSH Brain 2 Flybarless controller. I have also acquired the blue tooth module to make setup easy and quick and adjustments seamless. 







Will start the build soon, so stayed tuned...

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