Editing Inline skates (section)

=== Rockerable frames ===

{{multiple image
 | direction = vertical
 | width = 220
 | image_gap = 20
 | image1 = First Rollerblade brand inline skates with round heel brake-from early 1980s-IMG 5980-Rockerable Frame view 2-FRD.png
 | image2 = Nexus Rockerable 235mm inlne frame and axle bolts-IMG 5900-bg-FRD.png
 | image3 = Endless 90 Trinity inline skate frame-Undercover 110mm wheels-IMG 4095-Rocker annotated-bg-FRD.png
 | caption1 = Oblong mounting holes: 1980s
 | caption2 = Toggleable axle bolts: 2020
 | caption3 = Fixed rockered setup: 2025
}}

Wheel rockering can be achieved by using wheels of different diameters, or by using a frame with built-in support for a rockered arrangement of identical wheels. Modern inline skates of the 1980s came standard with oblong mounting holes as a standard feature on their frames. These holes allowed skaters to configure their skates with the same wheels in either a flat setup for long-distance skating, or a banana-rockered setup for highly maneuverable disciplines like hockey, with sharp turns and quick footwork.<ref name="rollerblades-dryland-training-1985"/>{{rp|81–86}}<ref name="markus-thierstein-wheel-rockering"/>

Skate manufacturers subsequently devised various toggleable hardware for quick and reliable switching of wheel setups. These involved the use of frame spacers, axle guides, mounting hole inserts, or axle bolts that fit oblong mounting holes in two or more ways, in order to shift the axle’s center to a preset position.<ref name="miller-get-rolling-2003"/>{{rp|44–45}}<ref name="naomi-grigg-2014"/>{{rp|20–21}}<ref name="joyner-inline-hockey-1995"/>{{rp|28}}{{efn-ua|name=notes-on-brennan-olson-1987-lightning-patent}}

With the advent of mounting standards and easily-swappable frames in the 21st century, some inline frames now eschew toggleable hardware in pursuit of reduction in complexity, weight, and number of components. Each brand specifies exact locations for mounting holes to create a wheel arrangement that it deems optimal. For instance, the Endless 90 Trinity frame presents a flat setup when configured with three 110mm wheels, and a slightly banana-rockered setup with four 90mm wheels.<ref name="endlessblading-86-frame-spec-comparison">{{cite web
|url=https://help.endlessblading.com/article/86-frame-spec-comparison
|title=Endless Frame Spec Comparison & Overview
|website=Endless Blading
|url-status=live
|archive-url=https://web.archive.org/web/20250216043024/https://help.endlessblading.com/article/86-frame-spec-comparison
|archive-date=2025-02-16
|access-date=2025-02-16
}}</ref><ref>{{cite web
|url=https://www.endlessblading.com/blogs/news/the-geometry-of-inline-skate-rocker-designs
|title=The Geometry of Inline Skate Rocker Designs
|website=Endless Blading
|date=11 July 2020
|url-status=live
|archive-url=https://web.archive.org/web/20250216043322/https://www.endlessblading.com/blogs/news/the-geometry-of-inline-skate-rocker-designs
|archive-date=2025-02-16
|access-date=2025-02-16
}}</ref> Wizard frames have a similar fixed setup that mimics an even milder banana rocker. Wizard frames are, in general, even longer than Endless frames. Therefore, even though both shift the two middle mounting holes by similar amounts (1mm to 2mm), the rockered profile on Endless is further attenuated.<ref name="bladeville-wizard-frames-and-rest"/>