Equipmake Hybrid To Battery Powered LT11
The bus in this video from Public Transport UK, may look like any of the thousand New Routemasters on the streets of London.
But it’s not, as it’s been given a transmission transplant by Equipmake of Snetterton in Norfolk.
The observant amongst you will notice, it has a refurbished interior, as I wrote about in My First Ride In A Refurbished New Routemaster.
There is also this press release from Equipmake, which is entitled Equipmake Showcases Sector-Leading Repower Technology With Fully-Electric New Routemaster Bus.
Some points from the press release.
- Equipmake’s cutting-edge Zero Emission Drivetrain (ZED), uses a 95% British-built component content.
- With pre-service trials already started in London, operated by Metroline, the electric version of the New Routemaster will continue to be assessed over the next six months.
- The repowered New Routemaster, developed by Equipmake at its base in Snetterton, Norfolk, features a 400kWh battery enabling an expected in-service range of 150 miles – more than enough for a day’s running.
- The development of the all-electric New Routemaster has come about thanks to a programme part funded by the UK Advanced Propulsion Centre (APC).
- Over the coming months, Equipmake will be trialling additional repowered buses with other bus operators across the UK.
- Featuring an advanced water-glycol cooling circuit, the system has the added benefit of providing interior heating during cold conditions with captured thermal energy.
- When the battery is depleted at the end of a complete duty cycle, it can be recharged at the depot overnight via a CSS DC charging point.
But this is the bit I really like.
Under the skin, the New Routemaster also features Equipmake’s HTM 3500 electric motor. Seamlessly integrated into the prop shaft without the need for a separate transmission, the motor is precisely engineered to meet the demanding requirements of a fully-laden double-decker bus by producing 3,500Nm torque at a motor speed of just 1,000rpm and delivering 400kW maximum power.
It sounds a bit like a modern reincarnation of a TASC unit (torque and speed control unit), which was an industrial drive from the 1960s, used to precisely control industrial machines. I never used one, but I worked in a section at Enfield Rolling Mills, that did.
One car manufacturer of the time, was using them as an automatic transmission for a small car. It might have been Hillman.
A Comparison With The Wrightbus Streetdeck Electroliner BEV
The Wrightbus Streetdeck Electroliner BEV is the company’s latest electric double decker bus and a comparison can be made.
Seats
Equipmake LT11 – 87
Electroliner BEV – 96
Battery Size
Equipmake LT11 – 400 kWh
Electroliner BEV – 340 or 454 kWh
Range
Equipmake LT11 – 150 miles
Electroliner BEV – 200 miles with 454 kWh battery.
Conclusion
This New Routemaster, is certainly no ordinary electric bus.
With the batteries on hybrid buses needing to be replaced regularly, Eqipmake’s transmission transplant could also be scheduled, when a bus needs a new battery.
With Lotus just up the road, the engineering is certainly Normal for Norfolk!
The Anonymous Widower 