For users with greater propulsion needs, which rims are most appropriate?

• A. Small diameter handrims.
• B. Rim projections.
• C. Covered rims.
• D. Large diameter handrims.

Answer: (D)

Rim diameter directly affects how much propulsion you get per push. A larger diameter increases the leverage (radius) at which you apply force, so the same push creates more torque and, crucially, covers more distance with each stroke. For users who need more propulsion, this means you can move faster or with less effort per unit of travel, making larger diameter handrims the most efficient choice. Smaller rims demand more force to achieve the same torque and distance, which is harder for someone needing greater propulsion. Rim projections or covered rims don’t by themselves boost propulsion as much as simply having a larger handrim, though they can affect grip or comfort. So, the best option for greater propulsion needs is large diameter handrims.