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Second Ride App & Updates

Before you start the conversion/app usage

The intended purpose of the above-mentioned accessory component is installation according to this assembly manual, as well as its use on public roads according to the user manual. Please understand that during the development of the conversion kit and accessories, we based everything on the original condition of the mentioned Simson models. In case of modifications with parts that do not correspond to the original, or changes to the original parts due to accident, wear, or intentional modifications, we cannot guarantee that the conversion kit and accessories will work properly and safely, or that they can be installed at all. If you are unsure about your vehicle, feel free to contact us.

This document is provided by Second Ride GmbH and is intended as a supplement to the original manufacturer’s manual. Both documents are to be seen as one unit. They belong together, while explanations about the combustion engine can be disregarded.

Please read this document carefully and completely before starting the conversion and before taking your first ride. Here you will find warnings and notes, information and advice, as well as emergency measures and other important notes about your vehicle. Failure to follow these instructions can result in minor or severe injuries, as well as danger to life. In addition, the performance of the vehicle may be impaired. Please also carefully read the warnings and notes next to the symbols, especially those concerning high voltage. Only in this way can proper installation of the conversion kit and accessories, as well as proper use of the vehicle, be ensured. Ignoring these warnings and notes means accepting potential damage to people and the vehicle.

All technical data and descriptions contained herein were current at the time of printing. However, since continuous improvement is one of our main goals, we reserve the right to make changes to the products at any time. If you notice errors or omissions in this document, please post them in the Discord channel (see chapter “Useful Links”).

Compatibility

Supported Smartphone Models

The app is compatible with the following devices:

  • iOS devices from iOS 15 (at least iPhone X or newer)
  • Android devices, built from 2019 and at least Android 10

Supported Conversion Kits

The app and update tool work with the following conversion kits:

  • SR23 in combination with our Bluetooth module
  • SR24 partly without additional hardware and partly only in combination with our Bluetooth module (see next section)
  • SR22 is not compatible, as the hardware differs significantly and is not supported

Identifying whether your seat bench supports Bluetooth

If your seat bench has a USB-C port directly next to the main connector, then it already has a BT module integrated. To use it, you only need to perform the seat bench update. How this works is explained in the chapter “Update Process”.

BT Module

The BT module is only required if you have a seat bench without a USB-C port next to the seat bench connector.
If your seat bench has a USB-C port next to the logo, you can skip this chapter.

Scope of Delivery & BT Module

  • 1x BT module
  • 7x Cable ties
  • 2x M4x10 Hex socket screw
  • 2x M4 Spring washer
  • 1x M6x50 Hex socket screw
  • 2x M6 Hex nut
  • 2x M6 Washer

Required Tools

  • 10mm open-end wrench
  • 10mm socket, ratchet, and extension
  • Allen key SW3
  • Allen key SW4
  • Side cutter
  • Phillips and flathead screwdriver

3. Mounting the BT Module

Take a photo of or note the 5-digit BT module ID on the side of your BT module. You will need this later during the connection setup.

S50, S51, S70

Open the left side cover and remove the upper hole cover of the central housing section. This cover is no longer needed and can be set aside. Then loosen the nut at the ground point in the heart box and remove it together with all ring cable lugs and washers. Next, open the right side cover. Hold the bolt of the ground point and loosen the nut on the left side. Remove this nut along with the washer and lock washer. Remove the bolt and replace it with the M6x50 screw (1). Now reinstall all previously removed parts and cables in reverse order and close the right side cover. Screw on a new M6 nut (2), followed by a washer (3), about 20 mm onto the end of the screw.

Slide the BT module with its eyelet onto the screw, followed by the second washer and the nut. Ensure that the BT module’s button points in the driving direction. The module must not protrude beyond the heart box (4), so that the side cover can later fit back on properly.

Once the desired position is reached, hold the rear nut (2) with a 10mm wrench and tighten the front nut with a 10mm socket at 6 Nm. To mount the cable, continue with section 4.

KR51/2, KR51/1, KR51

Loosen the wing nut on the engine tunnel and remove it. Slide the BT module from the front, starting before the cross brace (1), between the frame tubes (2) to the back until it reaches the corrugated tube (3). Make sure the button points in the driving direction and the logo faces upwards. For fastening, pull one cable tie through the upper (4) and then through the lower tab of the module, then place them around the adjacent frame tube (2). For a secure fit, all cable ties should be positioned behind the cross brace (1).

Once the BT module is in position, tighten all cable ties evenly. To mount the cable, continue with section 4.

SR4-2, SR4-4

Remove the side panels to gain access to the battery compartment. If the old battery is still installed there, remove it, as the BT module will be mounted in this place. Slide the BT module from the left side into the battery compartment until the eyelet (1) passes the stop (2). Make sure the button faces upward and the logo points backward. For fastening, first pull a cable tie through the tab (3), loop it around the stop (2), and tighten it securely.

Then guide another cable tie through the tabs (4), pull it through the hole in the battery support surface (5), and tighten it as well.

To mount the cable, continue with section 4.

SR50, SR80

Clamping the vehicle into a motorcycle lift and then raising it makes installing the BT module significantly easier. Loosen the wing nut and remove the engine and electrical covers. Under the air guide plate (1) there are two holes (2) in the frame plate.

Place the BT module as shown with the underside on the frame plate, so that the threads on the underside of the module align with the holes (2) in the plate. A look from below helps to check alignment.

Now place a spring washer on each M4x10 socket head screw. Insert each screw through one of the holes, screw it into the BT module, and tighten to 3 Nm (hand-tight, not too tight). To install the cable, continue with section 4.

Duo 4, Duo 4-1, Duo 4-2

To fasten the BT module behind the mounting plate for the battery (1), press the top of the module against the mounting plate and rest it on the cross brace of the former lead battery holder (2), with the button facing upward. Pass a cable tie through the upper tabs (3), loop them around the cross brace (2), and tighten them securely. Another cable tie is passed through the upper tab (4) and around the mounting plate (1). The last cable tie is passed through the upper and lower tab (5) and fastened to the left tube (6), which connects into the handlebar tube.

Finally, tighten all cable ties evenly to securely fix the module. To install the cable, continue with section 4.

4. Connecting the BT Module

The male connector of the BT module (long cable) is connected to the diagnostic cable of the drive module. This creates a new diagnostic point, which is now the short cable end on the BT module.

Long Diagnostic Cable

On drive modules with serial number #00193 and higher, there should be a cable about 40 cm long coming out of the bottom of the drive module. The plug has a rubber cap on it. If this is the case, continue with step 2.b.

Short Diagnostic Cable

On drive modules with serial numbers #00038 to #00192, you will find the update cable as follows:

Removing the Cable Cover

Remove the cable cover from the drive module by unscrewing the M4 cylinder head screw (1) on the right side. You will need a 3 mm Allen key for this. If your cable cover has an oval cutout on the top left in the driving direction, then underneath it hides a second M4 cylinder head screw, which only needs to be loosened one turn to remove the cover.

Identifying the Diagnostic Cable

Now you have found the Vehicle Control Unit (2) (we affectionately named it “Günter”). From Günter, a short cable (3) goes out, which is not connected further and is covered with a rubber cap.

5. Cable Installation

Remove the rubber cap and connect the long cable of the BT module. Important: Make sure the arrows on the male and female connector align before pushing them together firmly. Now use the supplied cable ties to fasten the cable between the BT module and the drive module to the vehicle frame. Avoid sharp bends in the cable. If the cable is too long, loop it and secure it with a cable tie.

Now your BT module should be securely installed and connected to your vehicle.

Second Ride App

Commissioning

Installing the App

To connect your vehicle with your smartphone, please first download the Second Ride App:

App Store Link

Google Play Store Link

Caution

Make sure you are using the latest version of the app. This is the only way to ensure that all functions work reliably.

First Connection Setup

To ensure the security of your data and connection, we have implemented a secure connection process. This only needs to be performed once when connecting to a new smartphone that your vehicle does not yet recognize.
Keep your seat bench ID (laser-engraved on the bottom of your seat bench) or the BT module ID (on the side of your BT module) ready.

BT Seat Bench:

To connect your Second Ride App with your vehicle, the vehicle must be switched on so that the button on the ignition lock is pulsing.
Press and hold the seat bench button for 3s until a beep sounds and the logo LED pulses blue.
Now open the Second Ride App and tap “Connect” at the top right. A window opens, showing a device named “SecondRide”. Tap it and confirm the pairing request that may appear.
You will now be asked to enter the seat bench ID. Please enter the 5-digit number of your seat bench ID and confirm with “send”.
Now a connection will be established. Confirm any pairing request that may appear.
After a short moment, the connection should be successful and the app dashboard will appear.

BT Module:

To connect your Second Ride App with your vehicle, the vehicle must be switched on so that the button on the ignition lock is pulsing.
Press and hold the BT module button for 3s until a beep sounds and the logo LED pulses blue.
Now open the Second Ride App and tap “Connect” at the top right. A window opens, showing a device named “SecondRide”. Tap it and confirm the pairing request that may appear.
You will now be asked to enter the BT module ID. Please enter the 5-digit BT module ID and confirm with “send”. Make sure that “BT” is written in uppercase.
Now a connection will be established. Confirm any pairing request that may appear.
After a short moment, the connection should be successful and the app dashboard will appear.

Automatic Connection

After your smartphone has been successfully connected once, it will automatically connect in the future when you open the app and your BT seat bench is within range or your BT module is powered.

System Reset

Holding down the BT module button for 10s while switched on will cause it to forget all known smartphones and reset the BT name and all changed vehicle settings. If you previously changed vehicle settings, they will be reset to their original parameters.

App Usage

Dashboard Screen

The dashboard gives you a digital speedometer where you can view all relevant driving parameters. To understand the individual displayed parameters, you can read about them in the diagnostics screen of the app. Tap the small “i” info symbol next to the parameter name for more details.

Diagnostics Screen

The diagnostics screen provides deep insight into system parameters. These are divided into status messages, battery, and drive module. Under status messages, you will receive current information about the system state.
Take a moment and again use the option to tap the individual parameter names to get a more detailed description.

Vehicle Screen

The app allows you to adjust settings on your vehicle. These are divided into Pro Features and Standard Features. To understand what changing these settings does, please use the small “i” info symbol next to the parameter name in “Settings”.
Pro Features are only available if Pro is unlocked on your BT seat bench or BT module. How this works is explained in the following section.

Caution

By changing vehicle settings, you actively alter the driving behavior of your vehicle. Read the description of the respective driving property beforehand and drive carefully after making adjustments to get used to the changed behavior.

Unlocking Pro Features

To unlock Pro Features, an 8-digit Pro Code must be entered on the app’s “Vehicle” page.

Where do I find the Pro Code?

If you ordered a BT module including Pro Code, you will find it on the enclosed delivery note. If you purchased a Pro Code in our shop, it will be sent to you by email.

If you haven’t purchased a Pro Feature yet but want to use it, you can get your personal Pro Code at this link.

What if I have two phones / change phones / change vehicles?

With the Pro Code, you unlock the BT module or your seat bench. This means that regardless of whether you use a different phone later or the BT module/seat bench with a different vehicle, the Pro Features are usable.

In the app, there is an info button at the top left. This takes you to the app’s info page.
There you will find the “Report a Problem” field. With this, you can send us feedback including the log file of your last ride and app usage. If you encounter problems with the app or system, use this function to inform us.

Additionally, you will find all information about data protection & its settings, the imprint, licenses, and app version.

Data Protection

We take data protection very seriously and protect your data in the best possible way. You can find all information on data protection at this link.