SPIDER Automation | Tricycle Freewheel Adapter | 27mm Mounting Bore & 10mm Fixing Interface
Product Overview
The Tricycle Freewheel Adapter is a mechanical interface component intended for compatible freewheel mounting arrangements used in small tricycles, bicycles and scooters. It provides a mounting bore and fixing interface for integrating a suitable freewheel assembly with the corresponding drivetrain shaft arrangement.
The adapter has a 27mm mounting bore, a 34mm outer diameter and a 30mm body length. A 10mm fixing screw hole and metric thread pattern are also specified. These dimensions help identify the adapter’s mechanical interface when selecting components for a drivetrain assembly.
It is suitable for custom mechanical projects where the freewheel, shaft, fixing method and available mounting space match the adapter’s dimensions. Check the mating component dimensions and thread compatibility before installation.
Technical Features & Functional Characteristics
- Freewheel Mounting Adapter: Provides a mechanical interface for compatible freewheel assemblies in small vehicle drivetrains.
- 27mm Mounting Bore: Designed around the specified 27mm mounting-hole dimension.
- 34mm Outer Diameter: Provides the external mounting profile of the adapter body.
- 30mm Body Length: Compact axial length for suitable mechanical arrangements.
- 10mm Fixing Screw Hole: Includes the specified fixing-hole interface for securing the assembly.
- Metric Thread Pattern: Uses a metric-thread arrangement; the exact thread pitch and designation should match the mating fastener.
- Small-Tricycle Application: Intended for compatible small-tricycle freewheel and shaft arrangements.
- Multi-Platform Use: Can be considered for compatible bicycle and scooter drivetrain projects where the mechanical interfaces match.
Mechanical Interface & Mounting Dimensions
The adapter’s mounting dimensions are important when selecting a compatible freewheel, shaft and fixing arrangement. The specified 27mm mounting bore identifies the main mounting interface, while the 10mm fixing screw hole provides the stated securing feature.
| Interface | Dimension / Detail |
|---|---|
| Mounting Bore | 27mm |
| Outer Diameter | 34mm |
| Body Length | 30mm |
| Fixing Screw Hole / Shaft Interface | 10mm |
| Thread Pattern | Metric thread pattern |
Applications
- Small Electric Tricycles: For compatible tricycle drivetrain assemblies using the specified mounting interface.
- Manual Tricycle Drivetrains: For suitable freewheel mounting arrangements in small tricycle designs.
- Electric Bicycle Conversion Projects: For custom drivetrain arrangements where the freewheel and shaft dimensions match.
- Electric Scooter Projects: For compatible scooter transmission assemblies requiring a mechanical freewheel adapter.
- Custom Chain-Drive Systems: For mechanical prototypes using a compatible freewheel and shaft arrangement.
- Workshop Repair & Replacement: For replacing an existing adapter when its mounting dimensions and thread interfaces match.
Package Contents
| Quantity | Component |
|---|---|
| 1 | Tricycle Freewheel Adapter with 27mm Mounting Bore |
Product Specifications
| Parameter | Specification |
|---|---|
| Product Category | Mechanical Drivetrain Adapter |
| Item Type | Freewheel Adapter |
| Primary Application | Small tricycle freewheel mounting arrangement |
| Mounting Bore / Inner Diameter | 27mm |
| Outer Diameter | 34mm |
| Overall Length | 30mm |
| Fixing Screw Hole / Shaft Diameter | 10mm |
| Thread Pattern | Metric thread pattern |
| Compatible Vehicle Types | Small tricycles, bicycles and scooters with matching freewheel interfaces |
| Product Weight | 110g |
| Package Quantity | 1 adapter |
Installation & Operating Recommendations
Select the adapter according to the mating shaft, freewheel and fixing arrangement. Correct dimensional matching and secure mounting are important for reliable drivetrain operation.
- Check the Mounting Bore: Confirm that the mating shaft or mounting component matches the specified 27mm bore interface.
- Match the Fixing Arrangement: Use a compatible fixing screw and ensure that the 10mm fixing interface matches the intended mounting design.
- Confirm Thread Compatibility: The thread is identified as metric, but its exact diameter and pitch are not provided. Match the fastener to the actual thread before assembly.
- Check Freewheel Compatibility: Confirm the freewheel’s mounting geometry and engagement arrangement before installing the adapter.
- Maintain Alignment: Align the adapter and connected drivetrain components correctly to minimise uneven loading and chain-tracking problems.
- Secure the Assembly: Tighten the fixing hardware appropriately and ensure that the adapter cannot loosen during operation.
- Inspect After Initial Operation: Check mounting security and drivetrain alignment after initial low-speed testing.
