Category: Transmission

A New Coupler

22/10/2017

One of the first pieces of work that I commissioned for MR02EV was the coupler, a component which connects the electric motor to the Toyota MR2 gearbox.

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Changing Gears (Regen Override)

6/12/2016

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When MR02EV was first registered for road use as an EV by the certifying authority it was classed as having and automatic transmission. The reason for this? I removed the clutch so the motor and transmission are deemed to be permanently engaged. Not a big deal from a paperwork perspective, but it does raise a few issues when driving the car.

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New (Modified) Transmission Installation

21/8/2016

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The modified Corolla gearbox which is now a 2 speed was finally installed into MR02EV (see earlier posts for details on the modifications).

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Transmission Modification - Change the Gear Selector Pattern

21/5/2016

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(Making a Two Speed Gearbox From a Five Speed Gearbox)

One of the neat things about electric motors, like those used in electric vehicles, is the amount of torque they produce. In MR02EV, which has a standard Toyota gearbox for convenience, the plentiful torque means that only 2nd and 3rd gears are used when driving. 2nd gear gets the car smartly of the line and 3rd gear is for cruising above 60kph.

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Transmission – interlude.

8/4/2016

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MR02EV has been a registered road going vehicle for 3 years and covered about 12,000 kilometers in that time, mostly through commuting to work and running around town. It’s a fun car to drive. But right from day one the gearbox has been plagued with problems, excessive noise and excessive backlash, which has just gotten worse over time.

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The Adapter Plate and Coupler

4/4/2016

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One of the first major pieces of work that I commissioned for MR02EV was the adapter plate and coupler. The adapter plate allowed me to mount the electric motor to the existing MR2 gearbox. The coupler connects the motor to gearbox input shaft. Note: the MES motor has an involved spline (a spline on the inside).

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Michael Day

I have a Degree in Electrical Engineering from the University of Technology Sydney and am employed in Broadcast Television Industry. My hobby is the (continuing) modification of MR02EV. I am also the National Treasurer of the Australian Electric Vehicle Association.

A New Coupler

Changing Gears (Regen Override)

New (Modified) Transmission Installation

Transmission Modification - Change the Gear Selector Pattern

(Making a Two Speed Gearbox From a Five Speed Gearbox)

Transmission – interlude.

The Adapter Plate and Coupler

Michael Day

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