Porsche 914 EV Conversion

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Wiring and Rewiring - Getting Close!

Porsche 914 EV Conversion

Ugh, I'm dehydrated, exhausted and mad at this inanimate object. must love doing this conversion. Here's the fusible link in the front battery box.

2007 11

Saying Goodbye to my 2007 Dream Project

Porsche 914 EV Conversion

I contacted someone who expressed interest in purchasing the 914 a few months ago and that contact came through for me. Farewell 914EV. Cheers, Tim

Time to sell the 914

Porsche 914 EV Conversion

It's time to sell the electric 914. The car has been good to me and made the electric Civic project go so much faster.

Bypassing theCharger

Porsche 914 EV Conversion

Since my battery voltage never gets above the cutoff point for the Zivan charger bulk phase, I made a special charging cord with a timer built into it.

Fixing the Aux Battery Killer

Porsche 914 EV Conversion

If you remove the front dashboard cover and look under the steering column, you should see two connectors. Remove the right one as shown above.

2000 miles and counting

Porsche 914 EV Conversion

I broke 2000 miles with the 914 EV this week. The car has been running smoothly with no complaints. I'm getting more involved with the OEVA club.

Fixing PakTrakr Signal Integrity

Porsche 914 EV Conversion

Here's my experimental setup. added series 100-ohm resistor to the green wire going into the PakTrakr module and all the noise cleared up.

Charging Up on Roadtrips

Porsche 914 EV Conversion

tried firing up the generator with a little gas and it didn't go into overload with the Zivan charger at the 60% (12 amp) setting. 9 is actually 13.3,

New Tranny Fluid, Battery Filler and EV Toolbox

Porsche 914 EV Conversion

I tied up a bunch of loose ends today on the 914EV. replaced the transmission fluid with the synthetic Royal Purple fluid from ElectroAuto.

DC-DC Installed and New Brake Parts

Porsche 914 EV Conversion

Here's the mostly final installation. The wiring is a bit messy because I had to cut all the tie-wraps off from the original setup. Good Night

New DC-DC here and Tranny Fluid Too

Porsche 914 EV Conversion

I'll start the installation tomorrow after finishing my third week of commuting to work. Here's the Iota DLS-45 12V power supply.

Up and Running Again!

Porsche 914 EV Conversion

My friend Rick and his girlfriend Holly were gracious enough to come over and help me finish putting the transmission back into the car.

Yay! Less Vibration!

Porsche 914 EV Conversion

We were a bit nervous when we heard a minor squeal inside the transmission case. That caused the squealing to subside. Good night

New Tranny Here - Salvaging Cracked Parts

Porsche 914 EV Conversion

The newly rebuilt transmission from Greg Robbins showed up via UPS today at 95 pounds. Here is the plastic tub that it was shipped in. Pretty clean!

Update to Azure Dynamics DMOC Information

Porsche 914 EV Conversion

I've been receiving several requests this past year for the FTP site that contains the information on the Azure Dynamic DMOC445 controller. just received word from Azure Dynamics that they posted all this relevant information online here: [link] drive/TractionMotorswithDigitalMotorControllers.htm Have a great Holiday Season! Cheers, Tim

2009 2

Hair Dryers Installed

Porsche 914 EV Conversion

I took a few hours today to get the small hairdryers installed. The pipe clamps make the whole thing very snug.

DC 2

Serial Port and Hood Pin

Porsche 914 EV Conversion

Today was a bit slow. received some AMP pins in the mail that fit the special connectors on the DMOC445 controller. Here's the finished connector.

Dedicated Charging Outlet and Hairdryer Coupling

Porsche 914 EV Conversion

After sleeping for 14 hours last night, I think I'm somewhat recovered from that nasty cold.

Initial Fuel Gauge Driver Schematic

Porsche 914 EV Conversion

Since I'm stuck indoors today to recover from a sore throat, I put together the following schematic to drive the fuel gauge based on the pack voltage.

Finishing the Rain Gutter for the Engine Compartment

Porsche 914 EV Conversion

The major project of the day was finishing the rain gutter under the engine compartment lid. Here's the plastic that I bent a few weeks ago.

Finishing the Serial Cable and Testing the Fuel Gauge

Porsche 914 EV Conversion

I had a bit more time today to work on some other small projects. Here's the 914 patiently waiting for its rebuilt transmission from Rennsport Systems.

Getting the Tachometer and Lights Working

Porsche 914 EV Conversion

After receiving an updated.css file (ccShell config file) from Azure Dynamics for the DMOC445, I was able to access the EE1SpeedoDiv variable. The 3.3V

Replacing the Pilot Bearing

Porsche 914 EV Conversion

I purchased a new pilot bearing for the flywheel to see if replacing it would help with the rattles. Flywheel - it's what's for dinner!

Trying a Different Transmission

Porsche 914 EV Conversion

Last week Craig at Camp914 offered to lend me another transmission to see if I had vibrational issues. drove out to Camp914 this morning.

Hub is back but EE1SpeedoDiv is not there

Porsche 914 EV Conversion

Today had some ups and downs. I got the adapter hub from Electro Automotive back today. Wait a minute, there's no pulses coming out.

Getting the Heater Relay and Sending Back the Hub

Porsche 914 EV Conversion

After putting the adapter hub from Electro Auto onto the motor shaft no less than twenty times, I'm pooped. Here's the 125VDC relay. sigh).

DC 2

Keeping the Rain Out

Porsche 914 EV Conversion

Since I live in the Pacific Northwest, I get rather concerned that rain entering the engine compartment will cause problems with the electrical wiring.

Those (Not So) Good Vibrations

Porsche 914 EV Conversion

Well, it's time to bite the bullet again and see what I can do about the car vibrations. This vibrated across the floor as well, but not as strongly.

DCDC Transistor Hack

Porsche 914 EV Conversion

Here's the new circuit (click to enlarge). swapped out the IRFP350 FETs with IRFP460 FETs which have a higher voltage and current rating.

DC 2

Debugging the DC-DC waveforms

Porsche 914 EV Conversion

I spent most of Friday trying to figure out just what was blowing the DC-DC converter. Here's my full testbench setup. In essence, I took five 31.2

I Blew it Again! Learning About Soft-Start.

Porsche 914 EV Conversion

After studying the oscilloscope waveforms, I believed that the current sense circuit was way too spikey. Soooo, I picked a reasonable (.01uF) sigh).

DC 2

Initial CCPower Schematic

Porsche 914 EV Conversion

In my efforts to debug the failures of the DC-DC converter, I tried to capture a schematic of the board. Any ideas? Thanks for your input. Cheers, Ti

DC 2

PakTrakr is Online! DC-DC blown again.

Porsche 914 EV Conversion

I spent most of yesterday and a few hours today wiring up the PakTrakr system. chose to mount the display on the central console as shown above.

Getting the EV Back to the Shop and Fixing Electrical Stuff

Porsche 914 EV Conversion

Since the stranded EV was only 2 1/2 miles away, I walked back to the ICE car and drove it home too. This eliminated the 1.5

Fixing the DC-DC Converter

Porsche 914 EV Conversion

The company that makes the DC-DC converter is CC-Power in the UK, so I don't think sending it back to them would be timely either. Good Night

Fixing the Flywheel - Still Vibrations!

Porsche 914 EV Conversion

This has been one heck of a week. took the flywheel into an automotive machine shop to balance along with the attached clutch assembly. What!!???

NEDRA Pictures

Porsche 914 EV Conversion

Here's the wait in line for the ticket office at Portland International Raceway. felt proud to not have to waste gas while idling in line.

Taking a Day off to see the EV Show

Porsche 914 EV Conversion

I took the day off to walk around Portland to the farmers market and EV awareness day with Krista. Here are just a few of the more notable ones.

Balancing the Flywheel/Clutch

Porsche 914 EV Conversion

Okay, since I take Fridays off, this gives me a chance to take the flywheel into a machine shop for balancing. to balance. Ted, the owner of P.E.R.,

PakTrakr Arrives and Adapter Misaligned

Porsche 914 EV Conversion

Well, this day definitely had its ups and downs. The PakTrakr battery monitoring system I was expecting early next week actually showed up today.