Contact Us

Address: 
Unit 15 Dunkirk Business Park
Southwick
Wiltshire
BA14 9NL

Email:
sales@icenicycles.co.uk

Telephone:
+44 (0)1225 938078

 

Name *
Name

Frome Road
Trowbridge, England, BA14 9NL

01225938078

Iceni Cycles Ltd. design and manufacture pedal and electrically assisted trikes for multiple uses. The Chariot Trike, Carry Trike and the Cargo Trike are manufactured and assembled at our premises in Southwick, Wiltshire in the UK. 

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Range

Range


What is the range of your Trike?

This is a very difficult question to answer, all depends on many factors;

  • Gross weight of trike plus options, box, battery, motor etc

  • Weight of rider

  • Average weight of load being carried over delivery round

  • Terrain, gradient of hill for example

  • Traffic conditions, start/stop, lights

  • Weather conditions, wind factor for example

  • Rider ability and style

  • Drag coefficient

  • Average speed

  • Use of gears and gear ratio of motor

  • Capacity of battery in watt hours

  • Power of motor fitted, 250w, 500w, 750w, 900w


So many factors, too many variables, so what is the answer?

Iceni Cycles propose the use of a simple factor system, this will help the customer compare different Trikes but will not give the range in distance.  Every delivery round is different, only you the customer will know the range by experience.

  1. Ask the Trike supplier for the real and definitive weight of their Trike and options as delivered to you, this should include basic rolling chassis, box option, motor kit, battery and any other extras.

  2. Add weight of rider, 75kg average.

  3. Add weight of average cargo load, let’s assume you start at 150kg and reduce to zero, therefore 75kg average.

  4. Capacity of battery fitted in watt/hours, don’t forget to de-rate any lead acid, including AGM by at least 20% (up to 50% after 250 charge cycles).

  5. Capacity of spare battery carried with you, usually only applies to Lithium Ion solutions in watt/hours.

  6. Rated power of motor, a 750W rated motor will use more energy in the same way as a high performance car due to its increased torque and acceleration. This motor is for the North American market and is not legal in the UK or EU.

Now, add up all the weight to give you a gross weight in KG, calculate the watt/hour of fitted battery and any spares carried.  Divide the watt/hour by the gross weight, assuming all Trikes are using the UK and EU legal 250W motor the result is the range factor, the higher the number the better.

What if the motor fitted is of a higher power? Or You are using a lower ratio gear to give improved torque but reduced top speed?

Well as a rule of thumb, you need to compare like for like, so assume all Trikes geared for 25kmh, if you specify a lower top speed, say 20kmh then you will get better range.

If you have a 750w motor fitted then this will significantly reduce your range as you are generally using 3 x as much energy, of course you can hold off the throttle but experience shows the rider will always use max power to reduce his own effort.

Lead Acid batteries, even AGM technology need to be de-rated by 20% of quoted Ah capacity, after 250 recharge cycles this figure will be closer to 50%.

Here are some examples, shown as two scenarios based on our own research of various Trikes on the market, we have included our own product for comparison.


Scenario A

General cargo trike with traditional chassis, add on modular cargo box up to 1700 litre capacity and 250W hub motor complete with 36v x 20Ah Lion battery.

Weight of rolling chassis = 65kg

Weight of cargo box 1700l = 45kg

Weight of motor kit and battery = 13kg

Weight of rider = 75kg

Average weight of cargo = 75kg

Total weight = 273kg

Watt / hour: 36 x 19 = 684wh

Range Factor: 684/273 = 2.5


 Scenario B - Iceni Cycles

Next generation cargo trike with integrated monocoque chassis, add on cargo box of 1470 litre capacity and 250W hub motor complete with 2 off 36v x 14.25Ah Lion battery.

Weight of rolling chassis = 55kg

Weight of cargo box 1470l = 30kg

Weight of motor kit and 2 x battery = 11.7kg

Weight of rider = 75kg

Average weight of cargo = 75kg

Total weight = 246.7kg

Watt / hour: 36 x 14.25 x 2 = 1026wh

Range Factor: 1026/246.7 = 4.16

Additional range is accommodated simply by the addition of spare batteries, each battery weighs 3.5kg and provides 513wh.