Technical Specification
 
Motor:  Wisper High efficiency, 250W hi torque brushless motor, easily ridden past 15.5mph with almost no motor drag
 
Throttle:  Standard: Thumb throttle to 4mph (6km/h) and Thumb throttle to 15.5mph (25km/h) when pedalling. Full throttle option available.
Throttle only range:  ( Optional extra ) Using your Wisper bike on throttle only will reduce your range by up to 30%. If your bike has been upgraded so it works on the throttle only, we still suggest pedalling when you are able to do so. Use the throttle only function when you need to rest or to help you pull away when setting off.
 
Battery:  Lithium standard slimline 360Wh or long range 540Wh ( Optional Extra ) Lithium
 
Max Range 360Wh: 50 miles (80km)

Max Range 540Wh: 70 miles (110km)
 
Controls:  Wisper Back lit LCD display with remote controls
 
Weight:  360Wh: 21Kg  540Wh: 22kg
 
Frame:  Wisper Tailwind 6061 alloy hand welded, custom butted tubing / tapered headtube / BB68 / Internal cable routing / replaceable hanger
 
 
Mudguards: Aluminium custom made
 
Frame Size:  19″ 48cm
 
Colour:  Black or Stone
 
Fork:  Alloy twin blade
 
Chain-set:  Black alloy 48T chainring Crank length 170mm
Rear Derailleur:  Shimano Alivio Shadow design 9 speed derailleur
 
Shifter:  Shimano Alivio 9 speed M3100 rapidfire shifter
Cassette:  Shimano CS HG400 11-34T
Chain:  KMC X9 rust resist 9 speed
Stem:  Alloy 6061 oversized 31.8mm / 1 1/8″  Adjustable
Handlebar:  Alloy 6061 Flat  9°  740mm
Lights: Alloy super bright front and rack mounted rear, run from bike battery
Seat post:  Black anodised alloy 30.9 x 350mm
Saddle:  Wisper Comfort
Brakes:  Wisper Hydraulic 180mm disc front and 160mm disc rear
Wheels:  Alloy black anodised double wall 27.5” x 1.24″ (31.4mm)
Tyres:  Kenda 27.5” 2.2 high puncture resistance with reflector
Rear Rack: Aluminium 15kg load with cable tidy
Max Load: including luggage 21 Stone / 135kg
 
 
Why We Offer Wisper Full Throttle eBikes
Full Throttle eBikes offer a quick, eco friendly and cost efficient option for city commuters at a time when everyone is looking to save on rising fuel and transport costs.
Full Throttle eBikes offer commuters better control and enhanced safety when moving slowly in traffic.
Full throttle eBikes offer immediate power when accelerating especially useful at traffic lights or on hills.
Full Throttle eBikes allow a rider to “take a breather” and cool down from time to time during a journey, particularly useful when commuting in hot weather.
Full Throttle eBikes make cycling even more inclusive, enabling those of us with for example impaired movement to enjoy the benefits and freedom eBikes bring.
Fully Legal in the UK
Continuing our journey of pro-active leadership, innovation and progression within the e-bike industry we are proud to be able to offer fully UK legal, full throttle eBikes that will power our bikes up to 15.5mph without pedalling.
As well as making our bikes safer and more easily controlled at low speeds, offering faster acceleration from stand still, Wisper full throttle electric bicycles make cycling even more inclusive than ordinary eBikes, enabling those that need a little extra help when discovering, or returning to the joys and freedom cycling offers.
How It Works
Once we receive your order for a Wisper full throttle bike we arrange to have your bike tested by the DVSA and Type Approved as an L1e in the category 250W LPM (250Watt Low Powered) Moped.  This can take between 2 and 8 weeks as the bike has to be taken to a specially approved MVSA centre for the Type Approval tests to be carried out.  The tests are to make sure our standard eBike is safe and complies to current EAPC (Electrically Assisted Pedal Cycle) regulations.  Once these tests have been completed we are presented with a British National Type Approval, Minister’s Approval Certificate bearing your bike’s frame number, this ensures the certificate can only be used in conjunction with your specific Wisper bike. The certificate must be kept in a safe place just like an MOT certificate although we and the Driver and Vehicle Standards Agency will keep a record of your Bike’s Type Approval.
Unlike an MOT Certificate, the Type Approval Certificate lasts for the lifetime of the bike and does not need to be renewed.
Full throttle eBikes will continue to work in exactly the same way a standard eBike works when the throttle is not used. The rider only uses the throttle when needed, it will not effect any other standard EAPC function.
Exclusions
To obtain Type Approval bikes must be fitted with front and rear lights operated together on one switch. Because the Tailwind Trail, Tailwind City and Wayfarer Mountain do not have lights these bikes cannot yet be Type Approved.  We are working on a solution and hope to offer these bikes with a full throttle by mid 2023.
The Regulations
L1e electric bikes are a sub-group of Low Powered Moped that meets the criteria laid down in the Electrically Assisted Pedal Cycle Regulations 1983 (SI 1983 No. 1168) as amended by SI 2015 No. 24. The requirements are that the vehicle:
Be fitted with pedals by means of which it is capable of being propelled
Be fitted with no motor other than an electric motor, which has a maximum continuous rated power, which does not exceed 250 watts and cannot propel the vehicle when it is travelling at more than 15.5 mph
In essence, our bikes, when Type Approved, can be ridden legally on roads and private land within the UK at speeds of up to 15.5mph using just the throttle.