Re: Warp11 Hv
Jacks cobra is one of the reasons I chose to go with the 11hv.
I spent hours upon hours compiling research from the EVTV blogs/videos and many more on this forum, as well as studying heavily all info in could find on John Metric's "DC Plasma" and John Wayland's "White Zombie". Even then I wasn't satisfied, so I figured I should just call up NetGain and see what they had to say.
I ended up speaking with George himself. I asked him a ton of questions and he was more than generous with his time (Thanks George). We talked about different motor and controller options, gearing and probably a hundred other variables. I hung up the phone with a solid understanding of his product and what it is capable of within it's recommend limits.
This was great, however a new problem had surfaced. For those not familier with the Porsche 944, it has a transaxle, meaning the transmission is combined in one unit with the differential at the rear of the car. That by itself is a good thing, it actually gave the factory car almost perfect weight distribution. Alas though my 944 was born without a turbo so the tranny and diff are somewhat weaker than the turbo version. I needed to find a diff to handle the torque of the 11hv and the correct gear ratios to run. After a bit more research and a few calls to some petrol-headed friends I had my answers.
Out here in So. Cal there is company that does a lot differentials for 4x4 and hotrods called Currie; they make a ford 9" just like the "Zombie" but this one is independent so can retain the factory rear suspension. Differential problem solved - a bare 9" IRS housing that I could mount in place of the factory transaxle.
Now for the 'transmission'. The 11hv would develop enough torque at lower RPMs, but how to keep it in the power band for road driving? - Enter the Gear Vendors overdrive. With a 1:1 'first' gear and a .78 'second' feeding into a 4.86 rear end I was reasonably sure this is was a good solution. After one last look at the dyno curves from Jacks cobra I called EV Source (NetGain distributor and maker of the warpdrive controllers) and placed my order.
Disclaimer: non of this has been tested, not yet anyway, it's all just figures on paper.
I should have the proof in a few weeks once I drop the motor in.
I really should start a build log, but I'm not much one for documentation. I will surely though report my results once the car is off its jack stands and back on the road.
Last edited by danh818; 06-17-2012 at 11:23 PM.