The final assembly has us installing the top deck, bumper, battery holders and the electronics.
Ok, on to the build!
![](http://static.competitionx.com/uploads/2010/07/section-nav-arrow1.gif)
One thing to note – the stock spur gear that comes with the TRF419XR is not suitable for stock class racing. Top top it off, the spur gear mounting setup is a little odd as well, meaning not just any spur gear will work. I found that the Panaracer-Xenon spur gears work the best.
Since your electronics will probably not match what I have, I left the install of these out of the build. It’s pretty straightforward, however, so you shouldn’t have a problem installing yours.
![Tamiya TRF419XR Touring Car Build - Part 8 - Final Assembly | CompetitionX](http://static.competitionx.com/uploads/2019/04/tamiya-trf419xr-final-assembly-p1.jpg)
The first step is to assemble the servo horn and attach it to the servo. You can use the included servo saver setup or, like I did, attach a standard horn. I’m not to keen on the Tamiya servo savers – they seem to flex a bit too much for me.
![Tamiya TRF419XR Touring Car Build - Part 8 - Final Assembly | CompetitionX](http://static.competitionx.com/uploads/2019/04/tamiya-trf419xr-final-assembly-p2.jpg)
Assemble the servo mount. Blue threadlock is suggested here.
![Tamiya TRF419XR Touring Car Build - Part 8 - Final Assembly | CompetitionX](http://static.competitionx.com/uploads/2019/04/tamiya-trf419xr-final-assembly-p3.jpg)
Attach the servo to the mount. Blue threadlock is suggested here as well.
![Tamiya TRF419XR Touring Car Build - Part 8 - Final Assembly | CompetitionX](http://static.competitionx.com/uploads/2019/04/tamiya-trf419xr-final-assembly-p4.jpg)
Attach the mount to the chassis. You’ll notice it’s only attached on one side – this is an example of a floating servo mount. This helps retain the correct tweak on both sides of the car. Don’t forget to pop the drag link onto the servo horn.
![Tamiya TRF419XR Touring Car Build - Part 8 - Final Assembly | CompetitionX](http://static.competitionx.com/uploads/2019/04/tamiya-trf419xr-final-assembly-p5.jpg)
Here is where you’ll have some options; I went with the carbon brace as a starting point. I also attached the weight in the center, however I chose to do it after I had already built the car. (See the end of the manual for chassis rigidity options).
![Tamiya TRF419XR Touring Car Build - Part 8 - Final Assembly | CompetitionX](http://static.competitionx.com/uploads/2019/04/tamiya-trf419xr-final-assembly-p6.jpg)
Attach the motor. I will be running in the 17.5T class but, since my motor hadn’t arrived at the time of the build, I dropped a R1 Wurks 10.5T in for show.
![Tamiya TRF419XR Touring Car Build - Part 8 - Final Assembly | CompetitionX](http://static.competitionx.com/uploads/2019/04/tamiya-trf419xr-final-assembly-p7.jpg)
Assemble the belt tensioner.
![Tamiya TRF419XR Touring Car Build - Part 8 - Final Assembly | CompetitionX](http://static.competitionx.com/uploads/2019/04/tamiya-trf419xr-final-assembly-p8.jpg)
Attach the tensioner assembly to the top deck.
![Tamiya TRF419XR Touring Car Build - Part 8 - Final Assembly | CompetitionX](http://static.competitionx.com/uploads/2019/04/tamiya-trf419xr-final-assembly-p9.jpg)
Attach the top deck. I would NOT recommend using blue threadlock on these screws.
![Tamiya TRF419XR Touring Car Build - Part 8 - Final Assembly | CompetitionX](http://static.competitionx.com/uploads/2019/04/tamiya-trf419xr-final-assembly-p10.jpg)
Attach the battery pad. It’s a bit long so I cut it down a little to fit.
![Tamiya TRF419XR Touring Car Build - Part 8 - Final Assembly | CompetitionX](http://static.competitionx.com/uploads/2019/04/tamiya-trf419xr-final-assembly-p11.jpg)
Slip a wheel spacer onto the axle followed by the serrated nut. The spacers can be left off to help tune the width of your TRF419XR.
![Tamiya TRF419XR Touring Car Build - Part 8 - Final Assembly | CompetitionX](http://static.competitionx.com/uploads/2019/04/tamiya-trf419xr-final-assembly-p12.jpg)
Attach the rear body posts.
![Tamiya TRF419XR Touring Car Build - Part 8 - Final Assembly | CompetitionX](http://static.competitionx.com/uploads/2019/04/tamiya-trf419xr-final-assembly-p13.jpg)
Attach the front body posts to the front bumper.
![Tamiya TRF419XR Touring Car Build - Part 8 - Final Assembly | CompetitionX](http://static.competitionx.com/uploads/2019/04/tamiya-trf419xr-final-assembly-p14.jpg)
Attach the front bumper assembly to the chassis.
![Tamiya TRF419XR Touring Car Build - Part 8 - Final Assembly | CompetitionX](http://static.competitionx.com/uploads/2019/04/tamiya-trf419xr-final-assembly-p15.jpg)
Slide the foam bumper into place, then the carbon bumper mount. Secure with the 2 8mm screws.
![Tamiya TRF419XR Touring Car Build - Part 8 - Final Assembly | CompetitionX](http://static.competitionx.com/uploads/2019/04/tamiya-trf419xr-final-assembly-p16.jpg)
Install the battery bumper. This can be adjusted (more or less spacers) to move the battery in or out.
![Tamiya TRF419XR Touring Car Build - Part 8 - Final Assembly | CompetitionX](http://static.competitionx.com/uploads/2019/04/tamiya-trf419xr-final-assembly-p17.jpg)
Assemble the 2 battery holders. These additional screws can be adjusted (more or less spacers) to move the battery in or out or front to back.
![Tamiya TRF419XR Touring Car Build - Part 8 - Final Assembly | CompetitionX](http://static.competitionx.com/uploads/2019/04/tamiya-trf419xr-final-assembly-p18.jpg)
Attach the battery holders to the chassis.
And, just like that, you have a completed Tamiya TRF419XR Touring Car! Now install your electronics, mount that body and get to some racing!
Tekno ET410 Truggy Build – Opening Page
Tamiya TRF419XR Touring Car Build – Part 1 – Chassis/ Bulkheads
Tamiya TRF419XR Touring Car Build – Part 2 – Rear Differential
Tamiya TRF419XR Touring Car Build – Part 3 – Driveline
Tamiya TRF419XR Touring Car Build – Part 4 – Steering
Tamiya TRF419XR Touring Car Build – Part 5 – Suspension
Tamiya TRF419XR Touring Car Build – Part 6 – Anti-Roll Bars
Tamiya TRF419XR Touring Car Build – Part 7 – Shocks
Tamiya TRF419XR Touring Car Build – Part 8 – Final Assembly