The Build – Part 5 In Part 5, I’ll be assembling the transmission of the TLR 22SCT. Although we have the option to build it as a MM (Mid Motor), I’ve opted to build it as a RM (Rear Motor) layout. That’s the most popular at my local track.
Build Notes: I’ll be working with greases to build the differential. Get some paper towels to help keep things clean.
The slipper pads fit into grooves on the spur gear. The fit is not tight, nor do they ‘snap’ into position, so be careful during this part of the assembly that they don’t fall out of the grooves
TLR 22SCT Build – Step 55 The first step is to build the differential. Put a dab of grease on the outdrives and then seat the rings in place. The grease helps keep the rings attached to the outdrives.TLR 22SCT Build – Step 56 Slide a thrust washer over the thrust screw and apply a liberal amount of black grease…TLR 22SCT Build – Step 57 …and ‘roll’ it over the small, 2mm balls to ‘pick them up’.TLR 22SCT Build – Step 58 Make sure the balls seat flat against the thrust washer. Now slide the 2nd thrust washer over the assembly.TLR 22SCT Build – Step 59 Insert a 5×8 bearing into the ‘female’ diff housing, then slide the thrust washer assembly into place as shown.TLR 22SCT Build – Step 60 It’s always a good idea to pre-compress any springs. Do this with the diff spring prior to installation.TLR 22SCT Build – Step 61 Drop the spring into the ‘male’ diff half followed by the diff nut housing.TLR 22SCT Build – Step 62 Slide the 5×8 bearing onto the ‘male’ diff housing followed by the diff gear.TLR 22SCT Build – Step 63 Fill the diff ball holes with clear grease. Drop the 14 diff balls onto the diff gear as shown…TLR 22SCT Build – Step 64 …and move into position, pressing them down into the holes.TLR 22SCT Build – Step 65 Slide the two diff assemblies together and tighten the diff thrust screw. Tighten down until it bottoms out, working the diff every turn or two. Once bottomed out, back it off approximately 1/8 of a turn. It should feel nice and smooth.TLR 22SCT Build – Step 66 Slide the diff thrust nut protecting piece into place.TLR 22SCT Build – Step 67 Attach the transmission case half to the motor plate with the single screw as shown. Add a small dab of threadlock here.TLR 22SCT Build – Step 68 Slide a 5×10 bearing onto the top shaft and insert that assembly into the transmission case.TLR 22SCT Build – Step 69 Assembly the idler gear with two 5×10 bearings as shown.TLR 22SCT Build – Step 70 Slide a pair of 10×15 bearings on to each side of the differential.TLR 22SCT Build – Step 71 Slide the idler gear assembly into place followed by the differential. Make sure the diff thrust screw is facing AWAY from the motor plate.TLR 22SCT Build – Step 72 Slide the opposite transmission case half into place and secure with the three screws (1 3×16, 1 3×35, 1 3×40). A small drop of threadlock on the two longer screws will help keep them from backing out.TLR 22SCT Build – Step 73 Pre-compress the slipper spring.TLR 22SCT Build – Step 74 Slide the red washer onto the top shaft followed by a slipper plate. Both plates are the same and feature a flat spot to key to the top shaft.TLR 22SCT Build – Step 75 Press a slipper pad into the grooves of the spur gear. Slide the gear assembly onto the top shaft. I found it easiest to face the top shaft down (as shown) to make sure the pad stays in the grooves on the gear during assembly.TLR 22SCT Build – Step 76 While holding the spur gear assembly tight (making sure the pad doesn’t fall out of the grooves in the gear)…TLR 22SCT Build – Step 77 …slide the second slipper pad, second slipper plate, slipper spring, slipper washer and slipper nut into place.TLR 22SCT Build – Step 78 Tighten down, making sure the slipper pads stay in the grooves of the gear. I tighten down quite a bit; final adjustment will need to be done at the track. You can also attach your motor and pinion gear at this time.TLR 22SCT Build – Step 79 Attach the gear cover, followed by the slipper adjustment plug.
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!
