For cracked mounting tops, the best fix is "sistering." Sandwich the cracked area between two pieces of 3mm steel or aluminum plate. Bolt through the sandwich so the new plates take the structural load, leaving the cracked original piece as a mere spacer. Epoxy and Cold Weld
In the world of high-torque direct drive wheels and load-cell pedals, "rig flex" is the enemy. When a RaceLab top cracks, that rigidity vanishes, replaced by a mushy feeling that makes it impossible to be consistent. racelab top cracked
For non-structural cosmetic cracks, a high-quality two-part epoxy (like JB Weld) can fill the gap. However, 4. When to Contact Support For cracked mounting tops, the best fix is "sistering
Loose bolts allow parts to "shuck" back and forth, which hammers the material. Tighten them to "snug plus a quarter turn," but don't overdo it. Final Thoughts When a RaceLab top cracks, that rigidity vanishes,
If your wheelbase has a small footprint, use a larger baseplate to spread the torque over a wider surface area of the RaceLab top.
Be ready to tell them exactly which wheelbase or peripherals you were using. 5. Preventing Future Cracks