Gear Puller for Hornby Motor and Model Trains

Ideal tool to remove gears from Hornby motors fitted to model locomotives.

This pinion gear puller is ideal for many uses, including remote control models, car inner rings, bearings, and other tight parts.

It comes with five pins in different sizes: three cylindrical pins (0.9mm, 1.75mm, 1.9mm) and two semicircular pins (1.75mm, 2.8mm), allowing you to efficiently pull gears of various sizes. It can handle gears with a maximum outer diameter of 11mm and a height of 12mm. Made from high-quality materials, this tool is durable, easy to use, versatile, and practical, making it a must-have for both beginners and experienced hobbyists. 

Gear Puller Set Includes:

• 5 pins for motor shaft diameters:
  • 0.9mm
  • 1.75mm (semi-circle)
  • 1.75mm (cylinder)
  • 1.9mm
  • 2.8mm

FAQ – Product FAQs

Frequently Asked Questions

What is this pinion gear puller designed for?

This pinion gear puller is designed to remove gears from Hornby motors fitted to model locomotives. It is also suitable for many other small mechanical jobs, such as working on remote control models, car inner rings, bearings, and other tight parts within the stated size limits.

What sizes of gears can this tool handle?

The tool can handle gears with a maximum outer diameter of 11mm and a maximum height of 12mm. As long as your gear fits within these dimensions and matches one of the included pin sizes, it is suitable for use with this puller.

What pin sizes are included in the set?

The gear puller set includes five pins for different motor shaft diameters:

• 0.9mm (cylindrical)
• 1.75mm (semi-circle)
• 1.75mm (cylindrical)
• 1.9mm (cylindrical)
• 2.8mm (semi-circle)

Is this tool suitable for beginners?

Yes, the tool is described as practical and easy to use, making it suitable for both beginners and experienced hobbyists. As long as you work slowly and carefully, it is a very helpful tool for anyone starting out in model railway maintenance or small mechanical work.

Can I use this gear puller on non-Hornby motors?

Yes, you can use it on other small motors and mechanisms, provided the gears fit within the 11mm outer diameter and 12mm height limits, and the motor shaft matches one of the included pin sizes. Always check measurements before use.

What is the tool made from, and how durable is it?

The tool is made from high-quality materials and is described as durable, versatile, and practical. With normal hobby use and sensible handling, it should provide long-lasting service on model locomotives and other small mechanisms.

The gear will not move when I start tightening the puller. What should I do?

If the gear does not move, stop tightening and check that you are using the correct pin size and that the pin is properly centered on the motor shaft. Make sure the gear is fully supported in the puller and that you are not exceeding the maximum gear size of 11mm diameter and 12mm height.

The pin keeps slipping off the motor shaft. How can I fix this?

First, confirm that the pin diameter matches the motor shaft. Try one of the other included pins if necessary. Ensure the tool is aligned squarely with the shaft and that the motor is held firmly so it cannot twist while you apply pressure.

I am worried about damaging the gear or motor. Any tips?

Apply pressure gradually and never force the tool if you feel sudden resistance. Double-check that the gear fits within the specified size limits and that you are using the correct pin. Working slowly and keeping everything aligned will greatly reduce the risk of damage.

The gear came off at an angle. Is that a problem?

If the gear comes off at an angle, inspect both the gear and the motor shaft for visible damage or bending. In future, ensure the gear sits level in the puller and that the pin is centered before you start tightening. If parts look damaged, do not refit them until you are sure they are safe to use.

The tool feels stiff or rough when I use it. What should I check?

Make sure there is no debris caught in the moving parts of the puller and that the pins are clean and straight. If the stiffness persists, work more slowly and avoid over-tightening. Do not use excessive force, as that can damage both the tool and your model parts.

How do I choose the right pin for my Hornby motor gear?

Measure the motor shaft diameter and select the pin that most closely matches it from the included sizes: 0.9mm, 1.75mm (semi-circle), 1.75mm (cylinder), 1.9mm, and 2.8mm. The pin should fit snugly over or against the shaft without excessive play, to provide controlled pressure when pulling the gear.

Can I use this tool when assembling or modifying model locomotives?

Yes, the gear puller is very useful when assembling, modifying, or upgrading model locomotives, especially when you need to remove existing gears from Hornby motors or other compatible motors within the stated size limits.

Is this tool suitable for fitting new gears as well as removing them?

The tool is specifically described as a pinion gear puller, intended for removing gears. It can help you prepare the motor shaft by safely removing old gears, after which you can fit new gears using appropriate methods and tools that are suitable for pressing or positioning them.

How can this help with remote control models and other small mechanisms?

Many remote control models and small mechanical assemblies use tight-fitting gears, inner rings, and bearings. As long as the parts fall within the 11mm outer diameter and 12mm height limit and match one of the pin sizes, this puller can help remove them cleanly during maintenance, upgrades, or repairs.

Do I need to paint or finish this tool before using it?

No painting or finishing is required. The tool is ready to use as supplied. You can keep it clean and dry to maintain its appearance and performance, but no additional coating or treatment is necessary for normal hobby use.