[TR] Anyone on this list converted a triumph to an EV using their original triumph gearbox?

[Michael Porter]

On 6/2/2017 10:53 AM, Sujit Roy wrote:
> I met a guy who converted an MGBGT to an EV but he used a Nissan gearbox.

I've only seen a couple of them.  One is a Spitfire in CA that doesn't 
use a gearbox (used IGBTs to control polyphase power to the motor), and 
a Spitfire in the car museum in Nashville that did use the Spit 
transmission, with an adapter to mount the DC motor.

Just to be clear about this, the original drivetrain is likely only 
necessary if you intend to use a DC motor to drive the thing, and while 
using DC is pretty simple, these days, it's like saying, "well, I _like_ 
1909 technology."  High-power switching technology today has enabled 
polyphase AC, and the chief attraction of that is that a polyphase AC 
motor can achieve max torque at _zero_ rpm, thus eliminating most of the 
drive train, and enabling a higher efficiency than is possible in simple 
DC systems.

This technology has already been fairly well-developed because it's been 
used in diesel-electric trains for a while.  M'self, I'd start looking 
at what technology is currently available before worrying about 
transmissions.  You may discover that's a waste of time.  In fact, it's 
common enough today that it may be cheaper to buy a written-off 
EV/hybrid wreck from the junkyard and adapt the pieces to whatever 
project you're contemplating than to buy pieces to fit around the 
traditional car and drivetrain.


Cheers.

-- 


Michael Porter
Roswell, NM


Never let anyone drive you crazy when you know it's within walking distance....