I am Jeff Southern from Kennesaw, GA. You have reached EVThing.me. This site was created that that you can follow the
conversion of my 1974 Volkswagen Thing to electric Drive. I purchased the car off of Ebay in June of 2012. I thought that this
would be a fun car to convert and drive. I wanted a car that would draw a little attention so that I could inform people about
the possibility of building and driving their own electric car.
Latest Picture August 11th, The EVThing won Best In Show EVCCON 2013!
1974 VW Thing Acapulco Edition with both Hard and Soft Tops
36 CALB LiFePo4 180Ahr Prismatic Lithium Ion Cells. Approximately 20KWhr
The charging and AmpHr meter is controlled by an Allen Bradley Micrologix 1100 PLC.
Allen Bradley 4" Color Touch Screen Panelview Component in the dash
HPEVS AC50 120VDC 650A Controller
VW 4 Speed Manual Transaxle with 3.44 Ring and pinion gear set and standard clutch
HP & Torque
Dynoed at 74hp to the rear wheels and 110ft-lb of torque from 0-3800rpm
80-90 miles on a full charge with 20% batter capacity left. It will do 100 miles on one charge to empty.
Elcon 2400W Charger can operate on 120-240VAC
A full charge at 240vac is about 9hr or 18hr at 120vac
The total weight of the car and batteries is 2400lb on certified scales.
0-60 in about 10 seconds with a top speed of about 80mph
Front Disc and rear drums plus up to 25Kw of regerative braking. Best stop from 60mph is about 120ft.
Tires & Wheels
Michlen Energy Saver A/S P195/65R-15, Porsche 365 15" reproduction wheels
DC to DC Converters
I have a Meanwell 480 Watt 12vdc and a AllenBradley 50W 24VDC Converter.
I estimate that I have about $27,000 in total cost of the EVThing including the purchase, restoration and conversion
Here is a video on the day I it home and a few thoughts on converting it to electric drive....
Started on the project by removing the engine and transaxle. This was truly a messy Job.
It looked like there had been a small engine fire on the drivers side.
This is what it looked like with the Engine out....
Once the engine and transaxle was out, I decided to blast away the nearly 40 years of grime and rust in the engine
compartment. Of course this happend to be one of the hottest days of the summer. At least the sand stayed nice
and dry and did not clog up the gun. Yep, this is how I spent my 2012 Forth of July. I guess I really wanted to
declare my personal independents of the oil companies.
Once I got the engine compartment cleaned. I sprayed in a heavy coat of primer. The engine compartment looked
so good that I decided to blast the area over the transaxle. It was very rusty, but cleaned up well with no
apparent rust holes. Once cleaned, I sprayed in some rustoleum flat black paint to protect the metal.
About 3/4 of the pans on both sides were rusted out in the rear. I had to replace them. Since I am fairly tall,
I also moved the seat track back about 2-1/2". I also had to patch a few small holes in the front of the pans.
I bought a set of repoduction 3/4 length pans from the Thing Shop and
welded them in with a MIG welder. This part of the restoration took the most amount of time to date.
I decided to fabricate the rear battery boxes out of 0.05" thick sheet aluminum. This should keep the weigh down and
still provide enough strength to carry the battery weight. The shape of the boxes was dictated by the rear structural
members on each side of the car. The boxes will be tack welded and seam welded together for strength and to
weather proof the batteries. Each one of the rear boxes will hold 10 of the 180AH cells.
I decided to paint the battery boxes body color. I thought that this would give the car a more professional appearance.
Assembled Motor, Adapter plate, Clutch and Flywheel. The motor is an HPEVS AC50 with a Curtis 1238-7601 650 amp controller. At 120VDC, It will produce about 70 peek HP in the 3800rpm range.
This should make the car a little more powerful than a Stock VW Thing. The Adapter Plate was purchased
from Thunder Struct Motors.
Finally got the AC-50 motor installed with the Support brackets welded in to support the battery boxes. I installed a
rebuilt transaxle with a 3:44 ring and pinion gearing. The stock VW transaxle has a 4:12 gear set. This is way to low to be
useful with an electric drive system. Since the electrical motor makes all 110ft-lb of it's available torque from ZERO RPM, I really
needed the higher gearing. Otherwise 1st gear would be nearly useless in the car.
I also sprayed engine compartment in a coat of fresh paint.
I make a set of speaker mounting plates out of 0.5" Aluminum for the front and rear of the car. I am going to try something a little
different with the sound system in the car. I am only going to have a 3.5mm AUX input jack and a bluetooth
input to an 50W audio amplifier. The amplified will have an On/OFF switch and volume control on the dash but no other
controls. I will not have a radio or CD player mounted in the car. I will use my Android
smart phone for all Audio playback and turn by turn navigation. It will have four 6" round dual cone speakers and I will
add a powered subwoofer if I want more bass from the system.
I Installed the Sea Blue 600A battery cutoff switch. I decide to mount it in the firewall so that you can get to
it through the glove box. I liked the idea of being able to disconnect the pack from inside the car.
Found a battery configuration that would allow me to get 10 cells in the recess in the front of the car.
This configuration allow the use of standard battery straps and fits with NO modification of the sheet metal.
it even clears the front support for the hood latch. I really did not want to have to alter this support.
Sometimes you just get lucky.
Who said playing Tetris was a wast of time!!
I made the front battery box out of 0.05" sheet aluminum like the rear battery boxes. However, it is not a full box.
The front is open and I will install some anti-static shipping foam to hold the batteries tightly in place. I will glue the foam
in place with contact cement. This will give some padding for the batteries in the event of a front impact.
I painted the front battery box the body color. Here you can see that the front of the box is open.
I just finished rebuilding the rear brakes, bearings and seals. I also just completed a conversion of the Front Brakes
from Drum to Disc. I painted the rear drums and front rotors with Duplicolor Silver high temperature caliper paint to keep them
from rusting so badly. I replaced the tired old shocks with Heavy duty gas filled shocks. I installe a new set of 15"
Porsche 356 wheels with baby moon hubcaps. I decided to go with Michelin Energy Saver A/S Tires size 195R65/15. These tires are nearly
same diameter as the original tires. This should make the old speedometer fairly accurate.
I cut out the old Gas Filler neck and welded in a steel plate. I will mount my J1772 electrical
charging port in this location.
I finally got around to bleeding the brakes. I was waiting until I had time to make a 4 Way Tee for the rear of the car to replace
the stock 3 way tee. I did this so that I could install a brake pressure transducer. This will output a voltage proportional
to the applied brake pressure. This will be feed into the Curtis Controller so it can increase the regenerative braking as more
pressure is applied to the brakes. I machined it out of brass. The Front, left and right ports are standard VW 10 x 1mm bubble
head brake ports. The rear port is 1/8 NPT. However, my transducer was a 1/4" NPT, so I used a brass Parker
hydraulic fitting to adapter the sensor to the Tee. The Fittings should seal because of the taped treads, however, I always feel
more comfortable using a thread sealant. Since this is a brake system, I used the Permatex 54540 sealer. This is formulated for
hydraulic fittings and can provide up to 10,000 psi seal when fully cured. Cheap Insurance against leaks.
Well I have had better days. I decided to show the bad with the Good. I have been having trouble
getting the Throttle Linkage to work well. In the Thing the Accelerator pedal uses a wire running from
the pedal to the rear of the car. The cable comes out right beside the transaxle. I have not been able
to find a good mounting point for the Evnetics Pot. I though I found a good location and made a plate
to mount on the bottom of the sheet metal above the transaxle. There are two good cross members that I
could mount the plate to. So, the Assembly you see is actually mounted upside down in the car. I installed
this assembly in the car and after testing the pedal for a while the cable broke at the brass cable adapter.
I made the cable attachment point out of a brass bolt. I drilled a hold through the head to accept the cable.
I then drilled and tapped a another hold about 60 degrees on an adjacent face on the hex head. I put a set Screw in this
hole to lock the cable. I think it was not turning freely as the level arm moved and broke the cable. I ordered
a new cable and will try again. If this does not work, I have a few days down the drain in this assembly.
I mounted the J1772 Connector to the car today. I will still need to make a spring loaded lid for it, but
I was pleased with the results. I will do a little body work and clean up the area when I am ready to paint
the car. This connector and a small circuit board should let the car charge on any standard Level 1 or Level 2
Well, I finally sorted out the throttle assembly. I did not like the way the throttle cable pull system worked.
It was loud and had a tendency to bind up (Not good in an accelerator pedal) so I redesigned the original assembly
to directly acuate the Evnetic Potentiometer.
I uploaded this Video so that you can see how it works.
I had planned to put the 6 orphaned cells under the rear seats. However, I did not like putting them on their side
to fit under the seat. It would make it hard to get to these cells. So, I decided to put them where the original
gas tank was in the front of the car.
To make a solid mounting surface and make sure it cleared the suspension and steering column, I cut the top off of
the old gas tank. I then sand blasted the rust away and welded in a false bottom plate to get a flat surface.
I then fabricated a new battery box out of 0.05" Aluminum sheet. I spot a seam welded
the box for strength. It might not look like it, but it clears the hood by about an inch.
I will be painting the box and the support in body color (Wimbledon White) like the other three boxes.
This was the last major fabrications that I had to do before starting final assembly. The next step is to finnish
the body work and prime and paint the car.
I got the front battery box and support for the six orphaned cells painted. I also installed the new Drive shafts,
CV Joints and Boots. These were the last mechanical part I needed to add to the car before starting final assembly. So, I installed
the rear battery boxes and ten cells in each box. Because of the odd shape of the boxes, there are
several voids between some of the cells/walls. I am going to put some anti-static foam in the voids. I also lined the
bottom of the battery boxes with a rubber material. I bought one of those 1/4" matts designed to go under a
treadmill or other exercise equipment to protect the floor. This material is very cheap, durable and easy to cut.
It feels good to be starting the assembly phase. I am probably going to get the car running at this stage. I cannot really
paint the car right now as the outside temperature is too low. (Really need to paint above 65 Degrees). I'll just finnish
the body work and spray some primer on the car. (The primer is very close to the body color) It will orange peel badly due
to the temperatures, but I am going to sand it anyway before adding the top coat of color. I am painting the smaller
parts in my basement. I should be able to get color on the hood, doors, rear engine lid and the bumpers.
This way I can simply shoot the color on the body when I get a warm day....
Well I finally got started actually painting the car. The hood was in pretty good shape, but it was bent where
someone had obviously dropped the windshield down hard on the hood (it is designed to fold flat) I straightened it out
with hammer and dolly tools. I then and smoothed it with some body filler in the worst places. I could have made
it completely smooth, but I would have had to skim coat the entire hood. (too much work)
So, I just worked the metal to be as straight as possible and shot a few heavy coats of sandable primer
on it and wet sanded the primer down with 1000 grit paper. I then shot the hood with Summit Single Stage Poly Acrylic
Costal Blue Paint. This paint is very close to the original Delft Blue from VW. It looks great (at least to me) against
the Wimbledon White that will be the body color. It is not an exact match, but true Color matched paint is about $500.00
per gal. This stuff is $75.00 per gallon. Some say this in not a quality paint, but the paint is a better paint that
I am a painter so it seems to work out pretty good. I mix it with 4 Parts Paint to 1 Part Reducer to 1 Part Activator.
The finnish is certainly better than it would have been from the factory and will look great after color sanding
I took advantage of the unusually warm weather. A friend and I spent all day Saturday sanding down the old paint
and repairing some minor body damage. Because of all of the ridges and odd shaped of the Thing's body, it was sanded
almost entirely by hand. I currently do not have any finger prints as they are mostly sanded off and I have blisters
on the tips of my fingers from the hours of sanding. However, the primer laid down nicely and only took minimal sanding
to smooth out a couple of runs. I was
very pleased with the results of all of our hard work....
The body is now ready for paint. I will shoot in on the fist warm day I get....
Well the body now has three good coats of Wimbledon White on it. All of that sanding seems to have paid off. I
sanded out a few places on the car and used glazing putty to fill in a few small pits and scratches. I then wet sanded
the entier car with 1000 grit sand paper. After it dried, I went over the entire car with a very fine scotts bright
pads. I then rolled the car outside and blew off the dust with an air nozzle. Once I had go most of the dust off, I wiped the
entire body down with denatured alcohol to remove any grease or oils (the oils on your hands can ruine a paint job).
Once it was wiped down I mixed up the paint that I would need (About 64 ounces). I shot a tack coat on the car.
A tack coat is a light coat of paint that helps additional coats stick to the primer. To shoot this coat, you open the fan up wide
on the gun and shoot this as a semi wet coat.
You should see the primer thorough this coat. I let it flash for about 5 minutes and tighten the fan up on the gun and added
a little more paint to the spray to shoot some wet coats. I shot two good wet coats on the car. (three on some areas like the front that gets the worst of the
I still need to shoot the doors, rear deck lid and a few dash panels, and of course the lower blue
stripe to finnish up the painting. However, having the body painted allows me to go ahead and finnish the wiring and install
all of the remaining components that make an electric car go.
Well, I did not feel that great this weekend. As a result, I did not get as much accomplished on the car as I would have liked.
However, I did make some Progress.
I machined a recess for a 12vdc fan for the heatsink that I am going to used with the controller. I bought this heathsink off Ebay.
It is 10" x 10" x 2-3/8" tall. The mounting plate is 3/8" thick and the fins are 2" tall. This should be able to keep the controller
within it's operating temperature without having to use the liquid cooling plate that came with the
AC-50 Kit I bought from EVTV. There
is plenty of ventelation and room in the engine compartment of the Thing and I just did not see any reason to add a more complex liquid
cooling system. I had to make a little 3/8" thick extension to bolt on the heatsink as the controller is
about 3/4" longer. If it cant keep the controller within the proper operating temperature, I can alway add the chill plate, pump,
reservoir, and radiator later if needed.
I also managed to get the stripes painted on the car and paint the dash panels and the licens plate light housing. These are
painted in the Costal Blue color. I really like this shade of blue against the Wimbledon white. So the only parts left to paint blue
will be the bumpers. I will still need to paint the doors, rear seat frames, and windshield frame.
Well I finally got the main power cables routed through the car. I spent quite a lot of time planning this routing.
I wanted to make sure that they would not rub against the frame. At first I thought about routing them through the
center tunnel. (I even drilled three holes for bushings in it) However, after inspecting the tunnel, I found that
there were a lot of sharp exposed metal edges in the tunnel. I was worried about the cables rubbing against these
sharp edges. I though about feeding conduit through the tunnel, but was worried it might interfere with the shift
linkage and or the clutch linkage.
After worrying about this way too long, I decided to run the cables along the side of the tunnel through the car. I
made some PVC bulkheads to safely feed the cables through the front and rear of the car's fire walls. The three in the rear go
through the hole that was originally used to feed the passenger side heater vents. I just held the tubes in place with masking
tape and filled the hole up with expanding foam. It works great and forms a water proof seal. On the front Firewall,
(Which is a double wall) I used a little JB Weld epoxy to seal and hold the tubes in place.
One of the two larger 2/0 AWG Cables connects the rear batteries with the front batteries through the 600A cutoff switch. The other
larger 2/0 AWG cable is from the most negative part of the battery pack that is located in the front of the car. The smaller 2 AWG
cable is connected to the most positive part of the battery pack in the rear of the car. Of course I have fuses on these cables
just in case one or more of the cables gets shorted out. The reason I am running the smaller cable to the front is so that I can
connect the charger in the front of the car to the most positive part of the batter pack. It will also carry the current to power
my Two DC-DC power supplies (I have a 12VDC Bus and a 24VDC bus). I doubt the charing current would ever exceed 100amps, so that
is the size fuse I will use on this cable.
I will make a sheet metal cover to shield the cables on the side of the tunnel. This shield will server three purposes. First,
it will protect the cables from abrasions. Second, it will shield any arc flash that might happen if the cables some how shorted
together. Finally, it will provide an EMI shield so that any electrical noise on the main cables from the inverter should not
interfere with the car's main electrical harness that runs on the some side of the tunnel. If fact I had to move the harness up
about 2" to make room for the cables and the shield. I try to make it look like the original shields for the heater tubes that ran
in the same area.
I also mounted the fan in my heat sink for the inverter. I made two mounting brackets and installed it in the engine compartment.
This arrangement will keep the motor leads as short as possible. (Helps with EMI noise).
I still need to strap up the cables in a few areas, but I feel good getting these routed through the car. It is a big step toward
completing the wiring.
I did not get much done this week. Fishing season is in full swing and I spent most of the weekend Fishing.
However, I did manage to get a couple of things done. I made two cable clamps out of UHMW. I machined them on my CNC mill so
that the three cable would fit tightly in them. They were made in three parts. I machine the cable pockets in two of them to form
the clamp. I machined a third part to act as a spacer and mounting base. Having a separate base made it a little easier to mount them. I mounted the base
with a couple of #10-32 socket head screws that were counter sunk in the base. The clamp half's had a clear drill for the 6-32 screw. I
I tapped the base to accept the screws completing the assembly.
This might seem like a minor accomplishment, but I wanted to make sure that cable would not rub on anything or interfere with the
front suspension. It is also the last thing I needed to do before doing the final assembly on the front battery boxes.
I also mounted J1772 Connector from David Kernzel. Like Jack said this is really a piece of jewelry and David is an excellent
machinist. I kind of wanted to show this part off so I mounted it where the old gas filler was located. I will make a polished
aluminum cap that pilots on the round portion of the connector and catches connector on the flanges. It will be a functional weather seal
and look like a gas cap. It is hard to explain, but i'll show how it works in a future post. The Connector was not completely
weatherproof, so I used a little Clear RTV silicone to seal it. There is a slot machine in the bottom of housing. Any water
that gets in would drain out of this slot and would not interfere with the plug's operation.
I got a little more done over this rather rainy weekend!!
I shaped and installed the anti-static foam in the front battery box (It is the pink Foam). I used some 1-1/2" Thick shipping
foam and cut it into several wedge shaped and used some 3M Super 90 contact cement to glue them together and also to glue them
into the car. This foam works well and holds the batteries tightly in place. I also made a bottom pad for both of the front
battery boxes out of the treadmill pad I used in the rear battery boxes. This material is about 1/4" thick. I like it because
it is easy to cut and is about the right thickness if I ever decided to add heaters to the battery box. (Not really needed in my area)
After sorting out the foam, I mounted both of the battery boxes in the front and installed the batteries. The front box is held in place with the
weight of the batteries and a little RTV silicone on the bottom of the box.
After installing the boxes I began to layout and mount all of the components that will live under the hood of the car. The largest component is the ELCON 2500W charger. I mounted
more or less in the center to get good air flow around it. The next largest component is the Meanwell 12V DC-DC converter. It can accept 77-144VDC in and
produce an isolated 12vdc output up to 40 amps. I mounted this on 3/8" stand offs from the firewall so that air can flow all the way around it.
You can see two large buss bars on the firwall. The one on the left is the most positive part of the pack and the one on the right is the most
negavive part of the pack. This makes it easy to tap into the battery pack as needed.
block is an isolated pack voltage transducer that will convert 0-150VDC to a 0-10VDC that my PLC can read. The input is a 15 bit signed Analog input so I should be
able to read the pack voltage accurately down to about 1/100th of a volt. It also provides up to 3000VDC isolation from the pack voltage to the analog input. I also
mounted my 800A 50mv Shunt on the far right hand side. This will connect to the thermocouple input card in the PLC. This card can read +- 50mv directly
from the shunt with 15 bit signed accuracy. It should be accurate to about 0.02 amps. Because it is bidirectional, it allows the PLC to accurately keep track
of the amps going into and out of the battery pack. I also added a couple of fuses for the two DC-DC converters and the
blocking diode that EVTV sells. This blocking diodes will only allow power to flow from the pack to the DC-DC converters. This prevents the filtering
capacitors in the DC-DC supplies from trying to drive the car during accelerations as the pack voltage sags. I also
mounted my J1772 controller board from David Kernzel that I bought from EVTV. This board along with the J1772 connector will allow the car to be
charge from almost any level 1 or 2 charging station.
I also started to terminate the 120VDC buss in the front of the car... I am finally getting to the most fun part of the build.... Stay tuned....!!
Things are moving slowly but i am getting some things done!!
I re-assembled the dash in the car and fixed several issues with the 40 year old wiring. Everything seems to work except for the wind shield wiper motor.
I think it will need a set of brushes. The armature seems to be ok and the switch seems to work correctly.
I spent a good deal of time getting all of the lights working. I more or less had to re-wired the rear tail lights as the previous owner had tried (unsuccessfully) to wire in
to add a trailer adapter and had more of less shorted every light in the area with each other. After a few hours, I have all of them working. I also polished the
plastic lenses to a good shine. They looked so good is also polished the front turn lights. I found that the hi-beams on the passenger side seem to be bured out. I ordered a
new set of headlights.
The meanwell 12V DC-DC converter is up and running. It seems to function well. It easily poweres the 12V Electrical system in the Thing.
I also hooked up the 2500W Elcon charger and tested it. It outputs about 11.5amps at 120VAC input so it seemed to be function correctly. I have not yet bottom
balanced the pack and did not want to let it completely charge the pack at this time, but it was good to see that it could put energy into the pack.
I am getting very close to the first drive.... Stay tuned...!!
The EVThing Lives! I did my first test drive today!!!
finally got the car assembled and wired up enough to go for my first test drive. I made a video so that you can see how it went.
Obviously the car still needs for work. I still need to paint the doors, rear deck lid and the windshield frame.
It was an absolute thrill to drive!!!!
Starting to Look more like a car again!
The EVThing is starting to look more like a car again. I have been driving it since may 10th
without a windshield. However, I managed to get it painted up due to the warm evenings we have had.
Since the hood hinge is part of the windshield frame it also allowed me to install the hood.
This car is not fast, but I find it to be a delite to drive. Electric motors make all of their torque from zero RPM so
from 0-45 mph the car is quite quick. Then it starts to run out of steam. I have run it up to 65mph in third gear and
it does pretty good. I think 70-75mph will be top speed in fourth gear. At least that is as fast as I want to drive it.
I am kind of down to painting the doors, bumpers and the rear deck lid. Then it will just a matter of installing the
convertible top to officially complete the build....
Some friends took the car for a test drive...
I think that they were impressed with the way the car drives. Anyway they did have big EV smiles on there faces
during and just after the drive... They asked lots of questions...
I got the doors painted and installed as well as the rear deck lid. I also installed the
convertible top. It actually looked better than I though it would.
It was a beautiful 75 degree day and we decided to take a backroad drive. We drove about 35 miles and it took 60 AmpHr of the 180 AmpHr pack. That
works out to about a 80-90 mile range. It looks like the car uses about 230 WattHr per mile and it is a 21KWHr pack.
For the record that works out to about a $0.80 worth of electricity when charging at night. At current gas prices, the same drive
in my 2011 F150 (17mpg) would have cost about $7.35 in gas. However, don't get me wrong, I will NEVER recover enough gas saving to
recover the money I put in the car. I did it because I wanted an electric car....Period...
I also got my J1772 Leveton charge station working. I can now charge the car with 240Vac. This
charges the pack at about 20 amps. This will fully charge the pack in about 9 hr. However, it is
rare that you fully discharge the pack, so the average charge time will be 4-8hr. This also
means that I can charge car from any public Level 1 or Level 2 charging station. These are starting
to show up in more and more places. Many Wallgreen's Pharmacies now have them installed...
One Year later......
Well the car is more or less done now. There are a few thing I will probably update and change, but
the car is complete. I have really been enjoying the car. I have had more fun with it than any other car I
have ever owned. Here is a video with so of the features of the car....
I also painted the rear seat frames and put in new rear seat covers. I also repaired and updated the lower
rear seat springs. Finally, I installed a new windshield wiper motor and cleaned up and installed the wiper
After week of Work
I spent the week of July the 4th working on the car an cleaning things up to get ready for EVCCON 2013
Much of the work you cannot see like me spending a few hours applying seam sealer under the car to make it water tight where I repaired tha pans.
Hopefully, it will slow down any rust to a crawl. I also painted the under side of the car with Rustoleum Flat Black paint. This stuff is great in high rust areas of your car.
I also painted the PLC mounting bracket and fabricated and painted the lids for the front battery boxes..
I also added a lot of little body trim pieces to the doors and newly installed rear seats. Finally I added a short little time lap video of me driving the car.
Stay tuned.... I hope to add more driving video soon!!!
I spent the week in Cape Girardeau Missouri Attending EVCCON 2013
I had a great time visiting with fellow EV builders, future builders and vendors. I can say with complete certainty this this
convention is much more fun if you bring an Electric Car with you. Throughout the week there are presentation by people with
a great deal of knowledge and wisdom related to building of Electrical vehicles. It also includes a car show and a track day event where
you can see how well your conversion performs. There is a 1/8 mile drag race, and auto cross and a dyno pull available for all attendees.
As for the numbers on my car, lets just say there was driver error in the auto cross and had probably the longest time of the event. I did a little
better in the drag race. My fastest time was 10.98 at 61mph. Not bad for a car that made 74hp at the rear wheels on the dyno. My car also weighed in at 2399lb total weight
with top and side curtains installed.
To my great surprise and delight. The EVThing won Best in Show Award. That was a true honor...
Transaxle, Steering and Audio
A little over a month ago, I broke 1st gear in my Transaxle, I sheared off every tooth but one. I sent the transaxle back to The Thing Shop and
they had their transmission guy repair the Transaxle and install a stronger first gear for me.
While I was waiting on the return of the transaxle, I took the time to remove the front center battery box and replace
the old worn out steering box. I also found that I needed new tie rods and an new steering arm. I replaced these components
and shot a little flat black Rustoleum paint in the area to do a little rust control.
I also took the opportunity to make a little dash panel to house all of my audio controls. As you can see I only have a
3.5mm AUX input, a bluetooth adapter and a volume control. The little amp provided plenty of power for the four 6" speakers
in the car. The speakers and AMP are from Pyle Audio. This simple audio system sounds good and really integrates well with my
iPhone. This was just a little project that I had been wanted to get done for a while now.
I got the Transaxle back a week ago and put in a new light weight balanced flywheel and pressure plate. The car
rides and drives much better now.
The next project is to add a heater...
Going to Lunch
Just a Little drive video of the wife and I going to lunch.
With the weather turning colder, I thought it was time for me to install a heater in the car.
The most efficient heater you can install in an electric car is a Ceramic PTC heater element heater. These
are commonly found in small electric space heaters that you can find at the local shopping center. While they
typically run of AC current, the element is just as happy to run of the DC current from the battery pack. PTC stands
for "Positive Temperature Coefficient. What this means is that as the element heats up it resistance
also goes up thus limiting the amount of current it will pull and limiting it's maximum temperature.
In other words is can't over heat. As a result, it is also the safest heater you can put in an EV.
It took me the better part of two weeks to design, fabricate and install the heating system. I added a video
showing the varius steps involved and a little of my though process on tackling the project.
It actually heats the car much better than I thought it would. I pulls about 9-10 ams for the pack making it a
1000 - 12000 watt heater. I was quite pleases to find that it kept the car comfortable on a rainy 45 degree
day. In a two hour drive, the heater would reduce the range by about 9-10 miles.
The next project is to machine a "Gas Cap" for the charging port...