Honda CX500 cafe racer engine and frame in the Canarin Garage workshop

Build Log

Honda CX500 Canarin Build

A 1981 Honda CX500 reinterpreted as a neo-retro, endurance-inspired cafe racer: oldschool longitudinal V-twin character, modern sportbike geometry, custom 17-inch spoked wheels, CAD and ANSYS-backed monoshock chassis work, and a clean Motogadget ecosystem.

1981 CX500CAD + ANSYSYSS Monoshock17-inch Spoked WheelsMotogadget SuiteGSX-R750 K7 Front

0.199 mm

ANSYS Max Deflection

160 MPa

Peak Stress Check

1.56

Minimum Safety Factor

17 in

Custom Spoked Wheels

Progress

Build Timeline

The project is moving from documented engineering and frame work into coating, assembly, systems packaging, and first-fire checks.

  1. Source Bike & Documentation

    The 1981 CX500 donor, import paperwork, parts references, and build notes were gathered before the project moved from old bike to full reinterpretation.

  2. CAD & Static Analysis

    Rear chassis and monoshock conversion modeled in CAD, then checked in ANSYS with documented stress, deformation, and safety-factor outputs.

  3. Teardown & Fabrication

    Frame, engine, and drivetrain separated. The rear section was opened up for the custom subframe, gussets, shock mounts, and compact Motogadget wiring layout.

  4. Coating, Assembly & Systems Prep

    Coated chassis parts, custom 17-inch spoked wheels, KTM Duke 390 radiator packaging, and electronics are being staged before final assembly.

Engineering

Not just a visual build

This is not a restoration of the original CX500. It is a performance-minded reinterpretation with CAD layout, static structural analysis, fabricated reinforcement, modern suspension geometry, and a road-and-track stance.

SolidWorks CAD model of the CX500 rear frame and monoshock conversion

CAD-modeled rear conversion

The custom subframe and monoshock conversion were modeled before fabrication so shock position, upper mounts, and tail structure could be evaluated as one system.

ANSYS equivalent stress plot for the CX500 rear chassis conversion

ANSYS stress review

Static structural outputs give the build a paper trail: 160 MPa peak equivalent stress, 0.199 mm max deformation, and a 1.56 minimum safety factor.

Close-up of welded gusset reinforcement on the CX500 frame

Welded reinforcement

The frame work is reinforced with formed plates and careful welds around the load path instead of treating the rear section as a simple visual hoop.

Workbench

Latest Shop Notes

A tighter view of what is happening on the bench right now: fabrication, Motogadget wiring, geometry, and finishing decisions.

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Engineering

Static Chassis Check

ANSYS static structural review documented a 160 MPa peak equivalent stress, 0.199 mm total deformation, and a 1.56 minimum safety factor for the rear conversion concept.

Report: Nov 2024

Fabrication

Gusseted Rear Section

The custom rear frame uses welded reinforcement around the shock and seat support area so the cafe tail is structural, not just cosmetic.

Process: TIG + fit-up

Geometry

Modern Front + 17-inch Stance

Suzuki GSX-R750 K7 USD forks, a Cognito Moto triple tree, 30 mm offset, and custom 17-inch spoked wheels push the CX platform toward a modern endurance stance.

Direction: road + Grobnik

Setup

Build Sheet

The current parts map, grouped by system so the build reads clearly on desktop and phone.

Engine & Drivetrain

  • CX500 497cc longitudinal V-twin, full rebuild in progress
  • OEM brown-code connecting rod bearings on order
  • Murray's twin carb kit with K&N pod filters
  • Custom stainless 2-into-2 exhaust layout in progress

Chassis & Suspension

  • CAD-modeled custom subframe and monoshock conversion
  • ANSYS static structural analysis with 1.56 minimum safety factor
  • YSS TCFX-MZ-366-280-TRL rear shock
  • Suzuki GSX-R750 K7 USD forks with Cognito Moto triple tree
  • 30 mm offset setup with custom 17-inch spoked wheel stance

Electronics

  • Motogadget M-Unit control system
  • Motogadget Motoscope Pro display
  • Modern digital controls and compact wiring layout
  • Integrated lighting and control system
  • Rae-San programmable ignition paired with OEM pickup

Cooling & Brakes

  • KTM Duke 390 radiator conversion
  • Cleaner cooling packaging around the USD front end
  • Modernized rear braking direction
  • Brembo rear caliper conversion and GSX-R K7 rear disc setup under review

Finishing

  • Matte black surfaces with industrial metal details
  • Neo-retro endurance cafe racer proportions
  • Black rims, brushed hubs, and gold anodized spoke nipples
  • Minimal cockpit, short seat, and raised exhaust direction

Garage Blog

Latest Garage Notes

Longer CX500 build notes now live in the blog, while this page stays as the main project overview.

Open garage blog
Honda CX500 engine and frame in the Canarin Garage workshop

May 6, 2026 · 4 min read

Honda CX500 Canarin Garage Build

A 1981 Honda CX500 is being reinterpreted into a neo-retro endurance cafe racer with modern geometry, custom 17-inch spoked wheels, and a clean Motogadget control system.

Read note
ANSYS equivalent stress analysis for the CX500 rear chassis conversion

May 6, 2026 · 5 min read

CX500 Monoshock Conversion And Chassis Analysis

The rear of the CX500 is being rebuilt with a custom subframe, YSS shock, welded reinforcement, CAD layout, and ANSYS static checks before final assembly.

Read note

Contact

Share Feedback or Get Involved

Want to collaborate, sponsor parts, or schedule a shoot of the finished build? Reach out and let's make it happen.

Location
Velika Gorica, Croatia
Ignition
Rae-San programmable + Motogadget ecosystem

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