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Tandem Bike Conversion System

  • $1,140.79 - $1,520.79

Product Code: TANDEMDDR20-7-489

Tandem Bike Conversion System

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Description


Heavy-Duty kit for Tandem Bicycles.

Extras Included:

  • Pedal-Assist Extension Cable
  • Axiom Journey Rear Rack (for 9 and 20Ah batteries) or 2-Tier Rear Rack for 10Ah Batteries
  • Heavy-Duty Direct-Drive Motor

 

E-BikeKit Rear 500w Direct-Drive Hub Motor Conversion Kit with 48 Volt Li-ion Battery Pack and Charger.

This premium electric bike conversion kit system is for riders that require the increased durability of a direct-drive motor for heavier loads and the long term reliability of a lithium battery. The direct-drive hub motor used in this conversion kit system is for heavier applications and a MUST for any total load (bike+rider+cargo) of 300 lbs. or more. This system pairs the heavy-duty motor with a 48v battery pack for increased torque and a 20 mph top speed.

Direct-drive motors are strong, durable, and long-lasting due to zero internal friction. Some lower quality or larger direct-drive motors have resistance, but that should not be a concern with this E-BikeKit direct-drive hub motor.

System Specs:
Watts (Nominal/Peak): 500-1000w (EBK 22Amp controller)
Top Speed: Approx. 20 mph @48v in 26" Wheel
Range: 9-42 Miles
Charge Time: 2.5 hrs (from 0-100%)
Weight: 24 lbs. (11 kgs)
Performance: High
Efficiency: Medium
Stealth Factor: Low

Li-ion batteries provide a high level of performance for the duration of each discharge (unlike seal lead-acid where performance is diminished 1:1 as the pack is emptied). Li-ion batteries have a much higher power to weight ratio than lead-acid and 5-8 times the number of charge cycles (how many times a rechargeable battery can be charged from 0-100%). The li-ion option costs more initially, but over time, the "cost-per-cycle" is about half the cost of lead-acid. Li-ion packs also require less care as they can be left partially charged, and do not require immediate charging after each use. All batteries MUST be properly cared for during storage.



Battery Choice: 
We offer 3 battery packs for this kit - the 9Ah li-ion shrink wrapped battery is the lightest and smallest, at just 5.8 lbs. The 20Ah li-ion shrink wrapped battery is the longest-lasting, with a 19-42 mile range. The 10Ah li-ion aluminum case battery sports a rugged enclosure, carrying handle, and locks in place with a key.

48v 9Ah Bag Battery

  • Range: 9-18 Miles
  • Price: $1,140.79

This e-bike battery is a lightweight and easy to carry pack. Two of these packs will fit into one canvas battery bag (included) nicely, offering the option of taking one or two of these depending on your range needs. You do have to connect them one at a time as needed; same for charging.

** It is common to carry two 48v 9Ah batteries in the same canvas bag in order to double your range. However, these batteries can not be used in parallel with one another. In other words, you would have to physically unplug one, in order to use the other. **

48v 10Ah w/ 2-Tier Rack

  • Range: 10-20 Miles
  • Price: $1,335.79

This li-ion e-bike battery offers a nice finished look plus a locking mechanism for securing the battery in the middle section of an included 2-tiered rack. The top of the rack remains clear and available. 

48v 14Ah Water Bottle Battery

  • Range: 14-28 Miles
  • Price: $1,300.79

This electric bike battery pack is intended for mounting to your bikes existing water bottle mounts. This pack has a lock and key set plus it is side-released from the mount which makes it mostly universal. Please print the guide to be certain the pack will mount on your bike before buying. Although the mount is designed for the water bottle area, theoretically it can be mounted in many areas with some light fabrication. 

48v 20Ah Bag Battery

  • Range: 20-40 Miles
  • Price: $1,520.79

This e-bike battery is the largest capacity, longest range e-bike battery we offer. This pack weighs 14 lbs. and comes in our canvas battery bag with velcro straps for securing it to the top of a conventional rear rack (not included).

Choosing Your Wheel Size: You can find your wheel size written on your tire. Available size options for this conversion kit are: 16", 20", 24", 26", 700c, and 29er. Acceptable tire widths for the E-BikeKit rims: 1.15" (29mm) - 2.25" (57mm).

Freewheel Choice and OLD Spacing: Our motors are intended for a 7-speed freewheel and provide 135mm OLD (dropout) spacing with a 7-speed freewheel and 15mm disc-offset.

When using an 8, 9, or 10-speed freewheel, this will increase the OLD by about 3.5mm per speed. When we assemble the motor here, we will dish and space it correctly to fit this. To install the wider wheel, you may need to spread the dropouts of the bike open in order to fit.

If you are not using disc brakes, so don't need the 15mm disc-offset, we can reconfigure the spacing to fit 135mm in many cases.

Learn More: Top 25 FAQ | Front vs Rear Wheel | Compatibility | Pedal Assist Compatibility

Helpful Resources: Helpful Videos | Owner's Manuals

Note: Our kits include parts to fit a wide variety of bikes, but do not fit every bike without modification or extra parts. Our representatives are available to help with compatibility questions and make recommendations on additional parts that you may need.

Questions? Call us toll-free at 1-866-882-3245 and an experienced professional can assist you. Monday – Friday 9 am - 5 pm EST. Outside of business hours get help fast via e-mail.

Shipping Note: Li-ion batteries are shipped separately from electric bike kits. Li-ion battery packs are shipped via FedEx Hazmat and are require a signature for delivery. You may receive your kit, battery, and possibly the battery rack (if applicable), on separate days.

Motor Specs


Brand: Electric Bike Technologies, Inc.
Type: Direct-Drive (brushless, disc brake compatible)
Power: 500w Nominal / > 1000 @48v
Max Torque: 46N-m @48v
Max RPM: 259 @48v
Cable: 8" Axle Exit, 3-Phase / 5 Hall Effect
Connector: Round 8-Pin 19/32" (10.4mm)
Weight: 12.8 lbs. (5.8 kg)
Warranty: 1 Year (up to 48v - 600 lbs. max load)

Battery Specs


Nominal Voltage: 48v
Nominal Capacity: 9Ah / 10Ah / 20Ah (0.2C)
Battery Energy: 421Wh / 468Wh /  936Wh approx.
Total Weight: 5.8 lbs. / 9.7 lbs. / 14 lbs.
Cell Assembly: 18650-3.6v-13S  4P / 5P / 10P
Life Cycles: 800-1000 Cycles
Max Continuous Discharge: 20A / 22.5A / 50A 
BMS Protection Current: 30A / 30A / 60A
Discharge Cut-Off Voltage: 39v
Max Charge Voltage: 54.6v
Inner Resistance: 180mΩ / 180mΩ / 220mΩ 
Charge Time: 4 hours / 3 hours / 5 hours
Operation Temperature Range: Charge: 0°C – 45°C / Discharge: -20°C – 60°C
Storage Temperature: 0°C – 40°C (Extended Storage: 15°C – 25°C;)
Battery Case Material: Blue PVC Heatshrink / Aluminum / Blue PVC Heatshrink
Assembled Pack Certificates: UL; UN38.3; MSDS; RoHS; SGS
Limited Warranty: 1 Year
Manufacturer: Electric Bike Technologies, Inc.

**System includes battery carrying rear rack.

UN 38.3 Certified e-bike battery 
Assembled Pack Certificates: UL; UN38.3; MSDS; RoHS; SGS

Includes


Every E-BikeKit conversion kit comes with all of the parts you'll need for your conversion.
1 x USA Hand-Built Wheel w/ Disc-Brake Compatible Hub Motor
1 x 48V Compatible 22Amp 12FET Controller
1 x Programmable LCD Dashboard
1 x PAS 12-Magnet Split Disc
1 x PAS Sensor Left Side Mount (right side mount by request)
1 x Thumb Throttle
2 x Left and Right E-Brake Levers
1 x Motor Cable
1 x Accessory Cable
1 x Battery Wire Harness (kits w/o batteries only)
1 x Freewheel (rears only)
1 x Battery
1 x Battery Charger
1 x Owner's Manual (an online PDF)
**Zip Ties, C-Washers, and Torque Arms in Every Kit!

Extras for Recumbent Tandem Bicycle Kit:
1 x Pedal-Assist Extension Cable
1 x Axiom Journey Rear Rack (for 9 and 20Ah batteries) or 2-Tier Rear Rack for 10Ah Batteries

 

 

extra kit image

Heavy-Duty kit for Tandem Bicycles.

Extras Included:

  • Pedal-Assist Extension Cable
  • Axiom Journey Rear Rack (for 9 and 20Ah batteries) or 2-Tier Rear Rack for 10Ah Batteries
  • Heavy-Duty Direct-Drive Motor

 

E-BikeKit Rear 500w Direct-Drive Hub Motor Conversion Kit with 48 Volt Li-ion Battery Pack and Charger.

This premium electric bike conversion kit system is for riders that require the increased durability of a direct-drive motor for heavier loads and the long term reliability of a lithium battery. The direct-drive hub motor used in this conversion kit system is for heavier applications and a MUST for any total load (bike+rider+cargo) of 300 lbs. or more. This system pairs the heavy-duty motor with a 48v battery pack for increased torque and a 20 mph top speed.

Direct-drive motors are strong, durable, and long-lasting due to zero internal friction. Some lower quality or larger direct-drive motors have resistance, but that should not be a concern with this E-BikeKit direct-drive hub motor.

System Specs:
Watts (Nominal/Peak): 500-1000w (EBK 22Amp controller)
Top Speed: Approx. 20 mph @48v in 26" Wheel
Range: 9-42 Miles
Charge Time: 2.5 hrs (from 0-100%)
Weight: 24 lbs. (11 kgs)
Performance: High
Efficiency: Medium
Stealth Factor: Low

Li-ion batteries provide a high level of performance for the duration of each discharge (unlike seal lead-acid where performance is diminished 1:1 as the pack is emptied). Li-ion batteries have a much higher power to weight ratio than lead-acid and 5-8 times the number of charge cycles (how many times a rechargeable battery can be charged from 0-100%). The li-ion option costs more initially, but over time, the "cost-per-cycle" is about half the cost of lead-acid. Li-ion packs also require less care as they can be left partially charged, and do not require immediate charging after each use. All batteries MUST be properly cared for during storage.



Battery Choice: 
We offer 3 battery packs for this kit - the 9Ah li-ion shrink wrapped battery is the lightest and smallest, at just 5.8 lbs. The 20Ah li-ion shrink wrapped battery is the longest-lasting, with a 19-42 mile range. The 10Ah li-ion aluminum case battery sports a rugged enclosure, carrying handle, and locks in place with a key.

48v 9Ah Bag Battery

  • Range: 9-18 Miles
  • Price: $1,140.79

This e-bike battery is a lightweight and easy to carry pack. Two of these packs will fit into one canvas battery bag (included) nicely, offering the option of taking one or two of these depending on your range needs. You do have to connect them one at a time as needed; same for charging.

** It is common to carry two 48v 9Ah batteries in the same canvas bag in order to double your range. However, these batteries can not be used in parallel with one another. In other words, you would have to physically unplug one, in order to use the other. **

48v 10Ah w/ 2-Tier Rack

  • Range: 10-20 Miles
  • Price: $1,335.79

This li-ion e-bike battery offers a nice finished look plus a locking mechanism for securing the battery in the middle section of an included 2-tiered rack. The top of the rack remains clear and available. 

48v 14Ah Water Bottle Battery

  • Range: 14-28 Miles
  • Price: $1,300.79

This electric bike battery pack is intended for mounting to your bikes existing water bottle mounts. This pack has a lock and key set plus it is side-released from the mount which makes it mostly universal. Please print the guide to be certain the pack will mount on your bike before buying. Although the mount is designed for the water bottle area, theoretically it can be mounted in many areas with some light fabrication. 

48v 20Ah Bag Battery

  • Range: 20-40 Miles
  • Price: $1,520.79

This e-bike battery is the largest capacity, longest range e-bike battery we offer. This pack weighs 14 lbs. and comes in our canvas battery bag with velcro straps for securing it to the top of a conventional rear rack (not included).

Choosing Your Wheel Size: You can find your wheel size written on your tire. Available size options for this conversion kit are: 16", 20", 24", 26", 700c, and 29er. Acceptable tire widths for the E-BikeKit rims: 1.15" (29mm) - 2.25" (57mm).

Freewheel Choice and OLD Spacing: Our motors are intended for a 7-speed freewheel and provide 135mm OLD (dropout) spacing with a 7-speed freewheel and 15mm disc-offset.

When using an 8, 9, or 10-speed freewheel, this will increase the OLD by about 3.5mm per speed. When we assemble the motor here, we will dish and space it correctly to fit this. To install the wider wheel, you may need to spread the dropouts of the bike open in order to fit.

If you are not using disc brakes, so don't need the 15mm disc-offset, we can reconfigure the spacing to fit 135mm in many cases.

Learn More: Top 25 FAQ | Front vs Rear Wheel | Compatibility | Pedal Assist Compatibility

Helpful Resources: Helpful Videos | Owner's Manuals

Note: Our kits include parts to fit a wide variety of bikes, but do not fit every bike without modification or extra parts. Our representatives are available to help with compatibility questions and make recommendations on additional parts that you may need.

Questions? Call us toll-free at 1-866-882-3245 and an experienced professional can assist you. Monday – Friday 9 am - 5 pm EST. Outside of business hours get help fast via e-mail.

Shipping Note: Li-ion batteries are shipped separately from electric bike kits. Li-ion battery packs are shipped via FedEx Hazmat and are require a signature for delivery. You may receive your kit, battery, and possibly the battery rack (if applicable), on separate days.

Brand: Electric Bike Technologies, Inc.
Type: Direct-Drive (brushless, disc brake compatible)
Power: 500w Nominal / > 1000 @48v
Max Torque: 46N-m @48v
Max RPM: 259 @48v
Cable: 8" Axle Exit, 3-Phase / 5 Hall Effect
Connector: Round 8-Pin 19/32" (10.4mm)
Weight: 12.8 lbs. (5.8 kg)
Warranty: 1 Year (up to 48v - 600 lbs. max load)

Nominal Voltage: 48v
Nominal Capacity: 9Ah / 10Ah / 20Ah (0.2C)
Battery Energy: 421Wh / 468Wh /  936Wh approx.
Total Weight: 5.8 lbs. / 9.7 lbs. / 14 lbs.
Cell Assembly: 18650-3.6v-13S  4P / 5P / 10P
Life Cycles: 800-1000 Cycles
Max Continuous Discharge: 20A / 22.5A / 50A 
BMS Protection Current: 30A / 30A / 60A
Discharge Cut-Off Voltage: 39v
Max Charge Voltage: 54.6v
Inner Resistance: 180mΩ / 180mΩ / 220mΩ 
Charge Time: 4 hours / 3 hours / 5 hours
Operation Temperature Range: Charge: 0°C – 45°C / Discharge: -20°C – 60°C
Storage Temperature: 0°C – 40°C (Extended Storage: 15°C – 25°C;)
Battery Case Material: Blue PVC Heatshrink / Aluminum / Blue PVC Heatshrink
Assembled Pack Certificates: UL; UN38.3; MSDS; RoHS; SGS
Limited Warranty: 1 Year
Manufacturer: Electric Bike Technologies, Inc.

**System includes battery carrying rear rack.

UN 38.3 Certified e-bike battery 
Assembled Pack Certificates: UL; UN38.3; MSDS; RoHS; SGS

Every E-BikeKit conversion kit comes with all of the parts you'll need for your conversion.
1 x USA Hand-Built Wheel w/ Disc-Brake Compatible Hub Motor
1 x 48V Compatible 22Amp 12FET Controller
1 x Programmable LCD Dashboard
1 x PAS 12-Magnet Split Disc
1 x PAS Sensor Left Side Mount (right side mount by request)
1 x Thumb Throttle
2 x Left and Right E-Brake Levers
1 x Motor Cable
1 x Accessory Cable
1 x Battery Wire Harness (kits w/o batteries only)
1 x Freewheel (rears only)
1 x Battery
1 x Battery Charger
1 x Owner's Manual (an online PDF)
**Zip Ties, C-Washers, and Torque Arms in Every Kit!

Extras for Recumbent Tandem Bicycle Kit:
1 x Pedal-Assist Extension Cable
1 x Axiom Journey Rear Rack (for 9 and 20Ah batteries) or 2-Tier Rear Rack for 10Ah Batteries

 

 

extra kit image


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