Editing Inline skates (section)

=== 165mm and 195mm frames ===

[[File:Speedskate Hyper-bg removed.png|thumb|right|220px|165mm speed boot]]

In 1974, Inze Bont, founder of the speed skate manufacturer Bont, created fiberglass-reinforced boots for short track racing, featuring 2 mounting holes spaced 165mm apart. An adjustable ice blade was attached to the boot using these holes. As inline skating gained popularity in the mid-1980s, companies like Darkstar, Mogema, and Raps began producing inline frames designed to mount onto these short track boots. This led to the establishment of the first inline skate mounting standard.<ref name="le-roller-en-ligne-interview-alex-bont"/><ref name="vegter-everything-about-frames"/>

[[File:Rollerblade.jpg|thumb|right|200px|Rollerblade Twister 80 with a 165mm mount]]

The 165mm mounting standard incorporates a height differential of approximately 10mm between the front and rear mounting points. This creates a heel lift, also known as pitch or heel-to-toe drop, allowing speed skaters to achieve more powerful push-offs through deeper dorsiflexion. Due to this height difference, the two mounting platforms on a frame are usually not contiguous. Other than the 165mm interaxial distance, the standard does not specify a frame width, mount width or exact mounting locations on the boot. In practice, Bont boots provide relatively small contact surfaces between the frame and the boot, compared to traditional rivet mounting. However, this is not an issue for rigid speed boots made from fiberglass, and even less so for Bont’s later innovations - kevlar boots (1986) and carbon fiber boots (1989).<ref name="bladeville-inline-skate-frames"/><ref name="powerslide-download-guides-frames"/><ref name="vegter-everything-about-frames"/><ref name="bladeville-glossary-terms-rollerblading"/><ref>{{cite web
|url=https://bont.com/pages/about-us
|title=Bont - About Us - Who we are
|website=Bont
|url-status=live
|archive-url=https://web.archive.org/web/20241126224141/https://bont.com/pages/about-us
|archive-date=2024-11-26
|access-date=2025-02-16
}}</ref>

Roces Impala skates from the mid 1990s were the first to adopt the '''165mm 2-point''' mounting standard outside of speed skating, paving the way for other inline skate manufacturers to follow. This standard became widely used across various inline skate disciplines, from recreational and aggressive skating to slalom skating. However, unlike speed boots, these disciplines do not rely solely on composite boots with extremely rigid soles. On softer soles, the small mounting platforms can cause the frame to wobble under load. To mitigate this, some boots reinforce the mounting areas with metal plates.<ref name="vegter-everything-about-frames"/><ref name="bladeville-inline-skate-frames"/><ref name="zecoprzepraszam-inerview-powerside-on-trinity-165mm-195mm"/><ref name="powerslide-different-mounting-systems"/>

[[File:P1030935k-speed-skate.png|thumb|right|220px|Relocated & reduced 2nd wheel to fit 165mm mounting]]

The 165mm standard, also known as '''SSM''' (Standard Speed Mount), was developed when speed skates primarily used five small wheels (e.g. 5x80mm). However, as longer frames with fewer but larger wheels became popular (e.g. 4x100mm), the positioning of the mounting bolts interfered with some wheels, forcing frames to become taller. This increased a skate's center of gravity and reduced a skater's performance. Some speed frames relocated middle wheels or reduce their sizes to fit the standard.<ref name="cadomotus-on-165mm-195mm-boots-on-ice-blades"/><ref name="bladeville-glossary-terms-rollerblading"/><ref name="zecoprzepraszam-inerview-powerside-on-trinity-165mm-195mm"/><ref name="bladeville-inline-skate-frames"/><ref name="publow-speed-skating-1999"/>{{rp|311–316}}

To address this, the '''195mm 2-point''' standard was introduced in 2003, also known as '''LSM''' (Long Speed Mount). By increasing the interaxial distance to 195mm, this standard prevented bolts from interfering with middle wheels, enabling the use of larger wheels and longer frames without increasing frame height. This design provides a stable ride at high speeds by maintaining a relatively low center of gravity in proportion to the longer wheelbase.<ref name="bladeville-glossary-terms-rollerblading"/><ref name="zecoprzepraszam-inerview-powerside-on-trinity-165mm-195mm"/><ref name="le-roller-en-ligne-on-165mm-195mm-triskates"/><ref name="powerslide-different-mounting-systems"/><ref>{{cite web
|url=https://powerslide.com/blogs/technologies/195-mounting
|title=195 Mounting
|website=Powerslide
|url-status=live
|archive-url=https://web.archive.org/web/20250217185608/https://powerslide.com/blogs/technologies/195-mounting
|archive-date=2025-02-17
|access-date=2025-02-17
}}</ref>

The 195mm standard retains the same heel lift as the 165mm standard. In general, only speed skating boots use 195mm, while most other inline boots continue to rely on 165mm. However, many inline frames include dual mounting slots on the front mount to accommodate boots of either standard.<ref name="inline-warehouse-frame-buying-guide"/><ref name="bladeville-inline-skate-frames"/>