Happy Bottom Bikes Thunderbolt Cruiser Motor Kit | Cargo Bike King | Cargo Bike King

Thunderbolt Cruiser Motor Kit

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Cross Country Kit

Everyone of our Direct Drive Hub Motors are custom ordered for reliability for the higher power demands of carrying loads, going up hills and transporting passengers. These Hub Motors also have direct plugin cables for a Cycle Analyst, Regen, Temp Sensor Cut-off, and can run on across various Voltages.
SKU: S003
SHIPPING: Calculated at checkout
Add $250 for BMC motor

Here you will find our Electric Bike Conversion Kits!  These state of the art kits are available in power levels ranging from 1000W all the way to mind blowing 5000W power systems!  

Our Striker High Torque Motors deliver the best acceleration and hill climbing. The Thunderbolt motors are the most popular as they are a do-it-all type motor that does pretty much everything well.  Finally, if you are into speed, the black lightning motor is focused on speed but can still handle some light hill climbing.

Worried about being street legal in your city/state/country? Have no worries! With the optional E-Bike computer you can limit any of our systems to street legal limit in seconds! 

The wind rushes through your hair as you accelerate in silence past ordinary bikers. The crisp smell of the mountain air is all you think about as you use your new freedom bike to propel you to your destination. No sweat No hills to worry about just plain old fashioned fun! Bring a smile to your face with our Thunderbolt Complete Cross Country kit! Check out this Thunderbolt Cross Country package in action Here!

At the heart of this kit is the HPC "Thunderbolt." This motor comes standard with our new GEAR LESS version that is the most reliable and powerful unit on the market. You can also choose the original GEARED version as well. This motor revolutionized the electric bike industry as it became the first motor to combine light weight (8.9 lb.) high torque (aided by high strength internal composite gears) high speed (33+ MPH) and the ability to accept up to 10 speed freewheels. This motor is the ultimate balance of torque and speed for those who want to do a little bit of everything.

Hi-Power Cycles offers the best equipment money can buy! The 2800W is in our opinion the best balance of performance hill climbing durability and price. This is a COMPLETE kit and includes everything you need to convert your existing bike!

Choosing a Motor- We offer both geared and gear less brushless motors for the HPC Thunderbolt Motor.  The geared version weighs 8.9 lb. and delivers high torque in a small and light weight package! This motor is very reliable and can be run up to 2000W reliably.  The gear less version is larger has no internal moving parts so it is inherently more reliable. The downside is weight.  The 1000W-1500W Gear less motors weigh in at 12.6 lb.  The 2000W-4000W motors weigh 15.9 lb. and the 4500W+ motor weighs 17.2 lb.  All motors are rated at peak power output. Motors are all REAR motors as they are much safer with higher output levels and do not require dual torque arms like a front motor.  Plus ride dynamic is greatly increased with a rear motor vs a front motor.

Choosing a Power Package- Higher Wattage (W) means more power! The 1000W system has a bit over 1.25 hp and is a great basic motor for medium assist up medium grades. This system has a top speed of 26 MPH. The 1500W systems all employ a 52v battery system that can provide more than 2 hp and can handle steep grades.  These packages can go up to 33+ MPH and will climb hills much better than the 1000w system!! The 2800W system has more than 3.75 hp and the NEW 5000W system features a brand new wider motor with 5mm wider neodymium magnets and stator can deliver OVER 6 hp.  This Motor has been redesigned for 2014 and features revised magnetics for increased efficiency at 90V! ALL SYSTEMS ARE FOR OFF-ROAD USE ONLY ABOVE 750W! Please check your local laws and regulations. Most models can be made on road legal with cycle computer.  The 3500W+ Systems all offer SERIOUS power output so only consider these options if you feel like you can handle the extremely high power output these systems offer.  These systems can be dangerous to novice or inexperienced riders. 

Choosing a Battery- NEW CHEMISTRY FOR 2013! New batteries from HPC are a special Lithium based tri-metal blend of Nickel Manganese and Cobalt or Li-NMC for short. These batteries are 25% lighter than the outgoing LiFePo4 batteries and deliver consistently higher voltages across the voltage range which translates into slightly more speed and range.

Theoretically we can build a bike to suit any of your range requirements so please ask!

Choosing a Charger- By default any battery system you purchase from us will come with a 2A Charger. This means that if you have a 10Ah battery system it will charge in about 5 hours. You can choose to upgrade to a 4A charger which is twice as fast and will charge in half the time (2.5 hours for a 10Ah pack). Finally the fastest charger we carry is a 6 Amp Charger which can charge in about 1.6 hours (or 3x as fast as the standard charger).

Choosing a Wheel Build- Choose the kit with the same size wheel as the bike you wish to convert. If you have a 26" bike you would like to convert then choose one of the 26" wheel options. Be sure to pick your preference of an all silver or all black wheel and the size. All of our wheel builds feature the best spokes (Sapim) you can find and very sturdy double walled aluminum rims. Our wheel builder has 20+ years of experience building wheels. PLEASE SPECIFY AT CHECKOUT IF YOU REQUIRE A V-BRAKE COMPATIBLE RIM!

Choosing a Throttle- This is totally up to the end user- It comes down to personal preference do you prefer a motorcycle type twist grip throttle or a thumb throttle? 95% of our bikes come with a twist throttle if your shifters are thumb throttles

Choosing a Freewheel- Choose the number of speeds on your freewheel based on the number of rear speeds on your bike. Most 21 speed bikes use a 7 speed freewheel 24 speed bikes use an 8 speed 27 speed bikes use a 9 speed freewheel and 30 speed bikes use a 10 speed freewheel.

Choosing a Rack/Bag system- If you have a basic battery system that is 10Ah the standard rack is fine. However if you would like a stronger sturdier rack opt for the upgraded rack that is rated to carry more weight.

We also offer our exclusive Frame Bag battery system. The frame bag allows a much more central weight balance These bags are hand made in the USA with exceptional attention to detail and make for an incredible ride! These new bags for 2013 are waterproof feature lockable storage and hardshell sidewalls to protect from punctures. At this time our half-frame bag can fit up to a 90V 12.5Ah NMC battery system!

Torque Arm: For systems below 2000W a torque arm is not necessary Anything above 2000W it is definitely recommended. The torque arm will save your motor from falling out/spinning  of your dropouts.

E-Bike Diagnostic Computer: The E-Bike Diagnostic computer is a very useful tool for your electric bike and is highly recommended. It delivers vital information about your electric kit at your fingertips such as: speed distance relative battery level RMP torque (Nm) and efficiency. It also allows you to limit your power level to your desired level so you can save battery. It also has a 3 speed function which allows you to set your speed (low medium high). With this computer you have the ability to make any kit street legal!

Performance Stats:

1000W System: 27 MPH (37V High Performance Li-NMC)

*22 Mile Range battery weight: 5.6 lb. Motor Weight: 8.9 lb. (Geared) or 12.6 lb. (Gear-less)

1500W System: 33 MPH (52V High Performance Li-NMC)

*32 Mile Range battery weight: 7.8 lb. Motor Weight: 8.9 lb. (Geared) or 12.6 lb. (Gear-less)

2000W System: 34 MPH (52V High Performance Li-NMC)

*32 Mile Range battery weight: 7.8 lb. Motor Weight: 8.9 lb. (Geared) or 15.9 lb. (Gear-less)

2800W System: 41 MPH (63V High Performance Li-NMC)

*38 Mile Range battery weight: 9.5 lb. Motor Weight: 15.9 lb. (Gear-less)

3500W System: 46 MPH (78V Ultra High Performance Li-NMC)

*46 Mile Range battery weight: 11.7 lb. (Li-NMC) 9.9 lb. (LiPo) Motor Weight: 15.9 lb. (Gear-less)

4000W System: 50 MPH (90V Ultra High Performance Li-NMC)

*57 Mile Range battery weight: 13.4 lb. (Li-NMC) 11.3 lb. (LiPo) Motor Weight: 15.9 lb. (Gear-less)

5000W: 52 MPH (90V Ultra High Performance Lithium)

*57 Mile Range battery weight: 13.4 lb. (Li-NMC) Motor Weight: 16.9 lb. (Gear-less)


**Range Estimates are a maximum figure based on FLAT ground no pedaling 170 lb. rider 18-20 MPH steady cruise with OPTIONAL 12.5Ah Li-NMC battery.**

This upgraded kit includes EVERYTHING you need to convert your personal bike into a High Performance Electric bike!

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