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Specifications and Extras

Can I attach a trailer to my bike?

There are many options to choose from when selecting a bike trailer. Most trailers are typically attached with a seat tube-mounted hitch or with a rear axle hitch.

Frame-mounted hitches allow the trailer to be easily attached for the different kind of bicycles. While using the frame-mounted hitch, make sure that the frame angles accommodate the hitch and that you can pedal freely with the trailer attached.

Axle hitches are the  most commonly used type of hitch. As Ampler bikes have a rear motor, the number of suitable axle hitches is limited. The rear axle of all Ampler bikes is fixed to the motor. The axle has a diameter of 12 mm and a thread of M12x1.25. If an adapter is modified accordingly, it might be possible to mount it to our bikes. Always take proper care when mounting any additional equipment in order to not to damage the motor cable or any other part of the bike.

You can find a rear axle adapter designed for attaching Thule trailer mounts from our online shop. This adapter fits the Ampler rear motor axle and makes installing a Thule trailer hitch possible. The Ampler Thule trailer mount is suitable for the Curt, Stout and Stellar models. It is not compatible with the Hawk, Bilberry or Pennon models.

 

The assembly guide for the cargo adapter for Thule trailers is available below:

 

What is the right model size for me?

You can find your perfect frame size based on your height:

160 – 170 cm = Small frame
170 – 185 cm = Medium frame
185 – 200 cm (and above) = Large frame

The geometry of the bike is made according to the most ergonomic and optimal seating position.

If your height is right in the middle of two frame sizes (e.g. 185 cm) we recommend choosing the smaller frame.

Tyre size and tyre pressure

You will find the correct tyre size from the specifications of your bike model page.

Here’s a short overview of the suitable sizes:

2016-2017 models

  • Hawk (Ladies’ and Men’s): 35-622 mm
  • Bilberry (Ladies’ and Men’s): 47-622 mm
  • Pennon (Ladies’ and Men’s): 47-622 mm

2018 models

  • Curt: 32-622 mm
  • Stout: 47-622 mm
  • Stellar: 47-622 mm

We recommend either Continental or Schwalbe tyres. The frame geometry is meant to fit the sizes listed above, and generally we don’t recommend any wider tyres. However, wider tyres may fit by removing mudguards. If you want to use tyres with spikes or tyres with a stronger pattern, make sure they properly fit your bike before riding.

We recommend checking the tyre pressure regularly. You can find the recommended pressure on the side walls of your tyres.

Can I have a higher handlebar?

The handlebars assembled on the bikes by default are the only ones we provide. We do not provide nor recommend using any other handlebars on our bikes. The handlebards come in standard sizes and can’t be adjusted higher.

The bikes’ geometry and components are designed and chosen to provide the most ergonomic position for each bike model, where the upper body – from hands and arms up to the lower back – support the load of the entire body, thus providing the most optimal riding position.

Having a higher handlebar and a more upright position would transfer more vibrations to your spinal cord, increasing the risk of injury.

Can I have different integrated lights on my Ampler?

The Busch+Müller EYC E front lights have an integrated power supply of 6 V DC and a limited current supply of 0.5 A. The lights are connected by custom developed connectors, added to the bike upon assembly.

Installing more powerful lights is not possible. They can’t work at their full brightness due to insufficient power supply. The overload can lead to failure in the motor controller unit.

Installing any other integrated light set will void warranty on the motor controller unit – we will not offer any technical support to aid the installation or repairs in these cases.

The original setup of Busch+Müller EYC E and the Lightskin 5-LED seatpost rear light is the brightest set of lights currently approved for our bikes.

Why does Curt not have a kickstand?

The Curt is designed to be fast and lightweight, stripped of all excess. Adding a kickstand would have meant compromising on weight and looks, and making the bike look and feel more bulky, which is the one thing the Curt’s personality would not be.

Curt is equipped with everything you need to hit the streets, including lights, mudguards and puncture-protected tyres, while keeping the rest at a minimum.

What is the maximum weight load?

The total maximum weight load is 120 kg, including the rider and additional load.

Should I get the single-speed belt drive or the 10-gear configuration for Curt?

Single-speed belt drive

The Gates Carbon Drive belt system makes your Curt lightweight and quiet. In addition to the exceptional look, the belt drive is clean, durable, maintenance-free and quiet. Carbon fibres give the belt drive a longer lifespan, compared to a conventional chain.

The single-speed belt drive is for you if you live in a mostly flat area where the climbs are either short or not very steep.

 

10-gear configuration

In need of extra gears on your daily rides? The 10-speed configuration gives you all the options to choose from when you next tackle a hill. This setup includes the high quality Shimano M6000 derailleur with the M6000 10-speed shifter.

The 10-gear configuration is for you if you live in a very hilly area where your rides include long and steep climbs.

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