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Wednesday, February 21, 2024

Team C TM4 Build – Steering

Team C TM4 Build – Steering

The Build – Part 5
Time to install the steering. The TM4 uses a dual bellcrank system that rolls along on a set of quality bearings. This system also incorporates an adjustable servo saver.

Team C TM4 Buggy Build Step 37
Attach a horn and mounts to your servo. Do not tighten down the mounts yet. For our build we’ll be using a Savox SC-1257TG servo.

Team C TM4 Buggy Build Step 38
Screw the servo assembly to the chassis. The ‘loose’ servo mounts should make that easy. Once secure, tighten down the servo mount screws.

Team C TM4 Buggy Build Step 39
Precompress the servo saver spring a few times to give it a set.

Team C TM4 Buggy Build Step 40
Here’s a little trick I learned to help keep the servo saver from getting crusty. Apply a little bit of black grease to the ‘flex’ area prior to installation.

Team C TM4 Buggy Build Step 41
Assemble your servo saver as shown. Tighten the servo saver adjustment nut until there is an 8mm gap between the nut and the bottom of the servo saver arm.

Team C TM4 Buggy Build Step 42
Assemble the steering rack. Don’t overtighten the M3 swivel screws; tighten them down and then test the steering. If it’s tight, loosen the screws 1/8 of a turn and try again. You want the rack to swing freely.

Team C TM4 Buggy Build Step 43
Install the two steering posts to the chassis. A dab of threadlocker is suggested.

Team C TM4 Buggy Build Step 44
Press the 4×8 bearings into the steering arms and slide the assembly into place over the steering posts. Make sure everything swings freely. Don’t include the orange 4×6 washers just yet.

Team C TM4 Buggy Build Step 45
Install a long ballstud into the steering arm and a short ballstud into the servo horn.

Team C TM4 Buggy Build Step 48
Build a steering link. I’m not a fan of turnbuckles so I like to use tools that make this task easier. Duratrax’s ballcup holder and Schelle Racing’s multi-tool are great items to have in your toolbox.

Team C TM4 Buggy Build Step 49
Once built, pop the link onto the ball ends.

Steering complete. Moving on to the top deck and shock towers.

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