Springs, Grips, Pegs, Risers, etc.
DROK Coulomb Counter
Below is a summary of modifications made as I gained experience with the bike. Most are discussed in detail elsewhere.
Installed a softer fork spring. Tech sells three different progressive springs. Besides standard, they offer one softer and one stiffer. As a lightweight rider, I immediately benefited from this change. However, the standard rear spring is working well for me as I tend to land primarily on the rear.
Installed an adjustable fork compression damping valve. Again, of extra benefit to a lightweight rider. This is mostly for comfort.
Increased rear spring preload. This had a profound effect on how well the bike turned. I found raising the fork tubes in the triple clamps insufficient. Increasing the rear preload tends to tip the bike on its nose and aids in turning. However, taken too far, it can adversely affect front ground-clearance and jumping ability.
Made a tungsten-copper flywheel weight. I felt sure I would appreciate more motor inertia. It was a large amount of work, but well worth it!
Configured controller's regeneration input to provide a small constant “engine braking” effect off-throttle. This yields a more familiar feel - something akin to an ICE bike in 3rd gear. A small positive side-effect is that it yields about a 1% increase in range.
Robust battery side covers. I can't take credit for this one, it was done by the prior owner. There is a section describing them in detail.