Thursday , 28 March 2024

Team C TM4 Buggy Build – Part 8 – Rear Suspension

Team C TM4 Buggy Build – Part 8 – Rear Suspension
Team C TM4 Buggy Build – Part 8 – Rear Suspension

The Build – Part 8
In Part 8 of the Team C TM4 build we’ll be assembling and installing the rear suspension. Pretty straightforward.

Build Notes:
There were a few manual mistakes that I found, mainly the droop setscrews and anti-roll bar setscrews being mixed up. The manual also calls out a 1.2mm rear anti-roll bar, however a 1.1mm one was included. I’ve addresses these differences in their corresponding build steps.

Team C TM4 Buggy Build Step 76
Team C TM4 Buggy Build Step 76
Let’s start by pressing a 5×13 and 5×10 bearing into each rear hub. The hubs are not directional so there is no need to worry about which side they go on.

Team C TM4 Buggy Build Step 77
Team C TM4 Buggy Build Step 77
Insert the 62mm CVDs into the rear hubs. Slide the axle pin in place followed by the wheel hex. Secure the wheel hex with the M2x5 screw.

Team C TM4 Buggy Build Step 78
Team C TM4 Buggy Build Step 78
The rear suspension arms come in a left and right gullwing design, so pay attention here. Using a M3x10 setscrew (instead of the M3x8 the manual says), insert it into the rear arms. You can get the M3x8 screws from the anti-roll bar link parts.

Team C TM4 Buggy Build Step 79
Team C TM4 Buggy Build Step 79
Also, find the rear, outer hinge pins. You’ll notice the recessed groove where the setscrew will seat.

Team C TM4 Buggy Build Step 80
Team C TM4 Buggy Build Step 80
Slide the outer hinge pin through the suspension arm and rear hub. There are 2 spacers that allow you to adjust the overall wheelbase of the TM4. For now, let’s put one on each side of the rear hub. Like we did with the front, screw a M3x3 setscrew up through the bottom of the rear hub to capture the hinge pin. Don’t overtighten!

Team C TM4 Buggy Build Step 81
Team C TM4 Buggy Build Step 81
Your assembled rear suspension arms should look like this.

Team C TM4 Buggy Build Step 82
Team C TM4 Buggy Build Step 82
As with the front, the rear uses inserts in the arm mounts. These are used to adjust anti-squat, roll center and rear toe. We’ll be using the 0° RF inserts and 1° RR inserts.

Team C TM4 Buggy Build Step 83
Team C TM4 Buggy Build Step 83
Press the 0° inserts into the RF arm mount.

Team C TM4 Buggy Build Step 84
Team C TM4 Buggy Build Step 84
Slide the long, inner hinge pin into the through the rear arm assembly and into the RF arm mount. Pay attention to the direction of the rear arms; the shock mounting holes in the arm should face forward.

Team C TM4 Buggy Build Step 85
Team C TM4 Buggy Build Step 85
Press the 1° inserts into the RR arm mount. Note that the ‘indicator’ on the insert should face out, like the picture.

Team C TM4 Buggy Build Step 86
Team C TM4 Buggy Build Step 86
Slide the RR mount into place and over the hinge pins, securing it with the M3x12 screws.

Team C TM4 Buggy Build Step 87
Team C TM4 Buggy Build Step 87
Screw one long ballstud into the center hole in the rear hub and one into the middle hole in the shock tower. Secure the shock tower ballstud with a M3 nut.

Team C TM4 Buggy Build Step 88
Team C TM4 Buggy Build Step 88
Key the CVD into the outdrive and pop the rear turnbuckles on that we built in Step 73.

Team C TM4 Buggy Build Step 89
Team C TM4 Buggy Build Step 89
Build 4 anti-roll bar links. You want to use a M3x8 setscrew instead of the M3x10 the manual says. These were the ones we were going to use as droop screws. We’re going to attach the front bar first, then the rear.

Team C TM4 Buggy Build Step 90
Team C TM4 Buggy Build Step 90
Pop the anti-roll bar links onto the balls molded into the front arms. Make sure the anti-roll bar ballstud faces the front of the car. I popped the front camber link off so you could see the anti-roll bar mount a little better.

Team C TM4 Buggy Build Step 91
Team C TM4 Buggy Build Step 91
Using the 1.2mm bar, slide the ends into the anti-roll bar mounts you just attached to the arms. Press the bar into place where the arrow shows.

Team C TM4 Buggy Build Step 92
Team C TM4 Buggy Build Step 92
Set the anti-roll bar cap into place and secure. Screw the M3x3 setscrews into place until the JUST TOUCH the bar, then back them off a teeny, weeny bit. They are there to keep the bar from moving back and forth, not to hinder it’s rotation.

Team C TM4 Buggy Build Step 93
Team C TM4 Buggy Build Step 93
Follow the same procedure to attach the rear anti-roll bar. You will be using a 1.1mm bar in the back even though the manual says it’s a 1.2mm (my rear one was labeled, however my front wasn’t).

Great job. A few extra build steps than we’ve encountered so far but it’s starting to look like a real car now!

Team C TM4 Buggy Build – Part 1 – Main Chassis Prep
Team C TM4 Buggy Build – Part 2 – Differentials
Team C TM4 Buggy Build – Part 3 – Gearboxes
Team C TM4 Buggy Build – Part 4 – Center Clutch
Team C TM4 Buggy Build – Part 5 – Steering
Team C TM4 Buggy Build – Part 6 – Top Deck/Shock Towers
Team C TM4 Buggy Build – Part 7 – Front Suspension
Team C TM4 Buggy Build – Part 8 – Rear Suspension
Team C TM4 Buggy Build – Part 9 – Shocks
Team C TM4 Buggy Build – Part 10 – Electronics
Team C TM4 Buggy Build – Part 11 – Wheels, Tires, Body

Back to the Team C TM4 Buggy Build List

About Tony Phalen

Tony Phalen - As an avid RC enthusiast, Tony has been building, bashing and racing RC Cars for over 30 years. He has participated in every kind of surface racing events - 1/18 scale trucks, 1/10 scale TC, Rock Racers, Rally - if it had wheels, he's raced it! He's also worked on both sides of the industry fence; collaborating with many major manufacturers (as well as being a sponsored driver) to working for a high-profile industry magazine. During this time he has learned many tricks, tips and techniques and is sharing that knowledge on CompetitionX - the most informative RC website on the internet!

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