Understanding Of 3-Wheel Inline Speed Frames

Standard3-wheel Frame Sizes and Mounting Specifications

3×100mm: Mounting Length: 150 mm

Application: Designed for children's speed skates or junior models.

3×110mm: Mounting Length: 165 mm

Application: Fits smaller adult feet, compatible with wheels up to 84 mm. Used for fitness skating, entry-level speed skating, and smaller-footed adults.

3×125mm: Mounting Length: 195 mm

Application: Optimized for larger wheels (90 mm+) and elite speed skating. Common in marathon and road racing due to higher speed potential.

2. Frame Dimensions and Structural Features

Material: High-strength alloys (e.g., AL7003, AL7075, magnesium) to balance lightweight design and rigidity.

Height setups maintain a similar strength ground improve aiding agility application fitness skating entry speed skating smaller footed adults common marathon poential

Height: 3×125 setups maintain a similar ground clearance to 4×110 frames, contrary to misconceptions about excessive height.

3. Performance Comparisons

Weight: 3×125 frames are lighter than 4×110 configurations, aiding agility.

Length: Despite larger wheels, 3×125 frames are shorter than 4×110 frames, improving maneuverability.

Stability: 4×110 excels in cornering stability (e.g., track racing), while 3×125 dominates straight-line speed and efficiency on roads.