Motorcycle frame

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Motorcycle Frames

Motorcycle frames come in a varity of shapes and materials, frames have been made from titanium, aluminium, magnesium, steel and carbon-fibre along with combinations of these materials.

Contents

[edit] Frame Materials

[edit] Steel

Examples

Early Honda CBR600

[edit] Aluminium

Examples

Honda VFR750

[edit] Aluminium and carbon-fibre

Examples

Bimota SB8K (composed of two aluminium alloy beams and carbon fibre plates)

[edit] Carbon Fibre

Bimota TESI 3D

[edit] Titanium

Examples

1971 Titanium Husqvarna

[edit] Magnesium

Examples

Elfr 1986

[edit] Magnesium and Aluminium

Examples

Aprilia ETV 1000 Caponord (aluminium alloy welded on to aluminium-magnesium alloy castings)

[edit] Frame Types

[edit] Single cradle

The motorcycle engine is held in a single cradle with a single spine.

[edit] Half-duplex cradle frame

The motorcycle engine is held in a double cradle with a single spine and single downtube.

Examples

Suzuki GSX250 Suzuki TS50ER

[edit] (Full) duplex cradle frame

The motorcycle engine is held in a full by two separate cradles, normally with a single spine.

Examples

Suzuki GSX400 Suzuki TS50X

[edit] Double cradle or perimeter frame

Two cradles follow the perimeter

Examples

Early Suzuki GSXR750, Suzuki GSXR1100 Suzuki RG250

[edit] Spine or backbone frame

The motorcycle engine is suspended from a single spine.

Examples

Honda CD200-T Benly Lots of (new) Triumphs.

[edit] Beam

Twin beams join headstock to swingarm pivot in as straight and short a line as possible.

Examples

Honda VFR750 Kawasaki ZXR750

[edit] Monocoque

Supports structural load using the frames external skin.

Examples

Honda NR500

[edit] Trellis

Similar to the beam frame, connectting the steering head and swingarm pivot point directly as possible. The frame is made up of a large number of short steel (or aluminium) tubes welded together to form a trellis.

Examples

Most modern Ducati's Suzuki SV650

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