Back in 2011 I found myself in Sydney needing a new car. One capable of driving on the highway, but also leaving the bitumen behind. At a car yard on Parramatta Road I found a tidy 2003 KJ Jeep Cherokee Red River Edition with very low kilometers. It was reasonably standard with a 3.7L V6 automatic, but more importantly, it had a transfer case.
As this car was going to be used extensively on the highway, I spent some time and money removing the fuel system and installing a dedicated LPG vapour injection system controlled by a Haltech ECU, with the help of the now defunct Tweakit Performance in Sydney. This was quite a bit more effort than I would have liked as apparently nobody converts Jeeps to LPG, but the end result was a well behaved, medium sized 4x4 that didn't break the bank to fuel. It remained like this for 7 years and xxx,000km until the engine started misbehaving, the LPG started freezing and I finally diagnosed a blown head gasket.
This very well may have been where the story would end, except that I had been wanting to convert a car to electric propulsion for quite a while. I had already purchased some EV parts, including a previously converted Mitsubishi Starion that needed some love, and now I was looking at the unfortunate engine problem as an opportunity to build an epic EV.
The plan was simple. Remove the Kostov 11" DC motor from the Starion, mate it to a Jeep manual transmission and install it in place of the current engine and transmission along with the Soliton1 controller. After all, I already had most of the gear needed for a complete EV, and all I needed was a transmission and a battery.