Saturday, March 21, 2009
It's on the road
I've put about 100 miles on the ol' bug so far, and it's going well. A bit of trouble shooting, but for the most part, good news on the EBug.
I was putting off this post until I inputted some video of my first test drive. But now I can' find the tape. The first test drive was rather funny. I backed out of the driveway pretty well, and took off down the street...all at about 5 miles an hour!
I had the original accelerator pedal linked up to the PB-6 Curtis pot box, that determines the amount of voltage that hits the motor. At first, the old cable was looped directly onto the arm of the PB6. Resulting in a top speed of 5 mph. A few adjustments, and I was able to get it up to 25mph a bit later. The 'throw', or area from the top of the accel pedal to the bottom of the pedal wasn't the same distance as the pot box arm. So I tried using a turnbuckle to attach the accel cable to the arm. It was far easier to adjust, and worked pretty well, but I still couldn't get the PB6 arm all the way down to full acceleration. I could adjust it too far, and then as soon as I turned on the ignition key, the car would start moving. Not a good choice.
Anyhow I lived with this for a month or so, as I had a bigger problem.
My 12 volt battery wouldn't stay charged. I tripled, and quadruple checked my wiring, and everything was good. I checked with EV America, and one guy there said I had my DC-DC converter set up correctly. Of course, he's the same guy who sent me the email instructions as to how to hook up the DC-DC converter (as this information wasn't included in my original schematic...why? good question.) So I finally end up talking to the other guy at EV America, the one who actually knows electronics, and it turns out there was a missing relay in my system. Not only a missing relay, but also a missing schematic that even mentioned that I NEEDED a 2nd relay. So they sent me the relay, but only after not 1, but 2 different trips home in the AAA truck with the bug. Not to mention a great deal of humility and embarrassment from my neighbors and family.
So I got the relay hooked up ( the DCDC converter had been sucking the 12 volt battery because the relay wasn't there to switch off the juice), and it's been fine, though I haven't done a measurement on the DCDC converter, measuring input and output. Need to do that.
Next problem was the pedal issue, so I ordered a gold cart pedal from some golf cart parts online store. I saw the pricing for the curtis pedal was around $250-$300. Pricey. Found it on this site for $12.50. Not a typo. Twelve bucks and fifty cents. Must have been in their system wrong, but they sent it to me. It wasn't a Curtis, another brand, but it does the same thing.
Only problem is the size. It's really big. No room to put it where the old pedal was. Think outside of the bug box. So I put it where the clutch pedal was. Yes, was. I used a dremel and cut the clutch pedal off (heresey!) So I fastened the behemoth pedal to the floor with a 2" wide piece of stainless steel, bent at an angle and bolted to the floor. Even on this side, the pedal is too big for my taste. However, I get full juice! I got it up to 50 mpg going thru the tunnel. Much better reaction, but I'll have to put the insides of this pedal into a smaller housing. Someone had the idea to use an old wah wah pedal housing. If you have one, send it to me. I think it'll work. Not a Morely variety, but a CryBaby wah type would work.
It's time to service the batteries now, add some water, etc. Not looking forward to that, just kind of a pain, but part of the deal.
I redid all of the door rubber on the passenger side. Looks great, but damn, my fingers really got cut up on that job. Slipping them inside the door with the window etc, I almost lost my poop.
I have to do the same job on the driver side, and have been putting it off quite a bit. Then I have to replace the ragtop. Another job I've been putting off. I'll get it done soon.
Next post: pictures and maybe some video.
Promise. Totally.
Sunday, January 18, 2009
Wolfsburg West Rocks!
Just a quick note about the level of service I'd had from the 3 sources I used in obtaining VW parts for the restoration aspect of this project.
Miscellany
Some miscellaneous items I caught up on.
In changing the bulbs from 6 vlt bulbs to 12 vlt bulbs, I had discovered that the taillight (pass side) was in extremely bad shape. Not only rusted out at the bottom from the worn out rubber seal, but several wads of tin foil had been wadded up inside with some gum or bondo. Check it out.
Before:


AFTER:

The signal lights on the front fenders have 2 bolts that attach them to the bumpers - so rusted they just broke off when I tried to remove the nut. So they had to get drilled out and replaced with new bolts. More uncovering that keep the process going longer than I want.
Also added the new running boards...

Basically the entire battery pack had been hooked up by this point with no melt downs. That was a big deal. Then I had to hook up the old wire harness (original bug electronics, former 6 volt system, now 12 volt system) to everything, and see if we were getting any juice.
The 12 volt system controls the 72 volt power system. When you turn the key, the 1st contactor closes to start the flow of 72 volts. When you step on the accelerator it closes the 2nd contactor and you have 72 volts thru the controller/motor etc. So I turned the key...click, first contactor...pushed the accelerator (car was up on jack stands) and click we get 2nd contactor and some wheels turning.
All sorts of excitement!
Might as well try the headlights...nothing. How about the horn (I had to replace that as well to 12 vlt), nope nothing. Parking lights come on, but when the headlight switch is pulled all the way, I hear the contactor engage. Alright, tons of weirdness.
I spent the next 2 weeks tracking down ground demons. Ended up pulling out headlights, checking for ground shorts, examining all of the wire loom, the old wiring, every connection. This sucked. A real head pounding against the wall experience. Finally my pinball electrician pal stopped by and helped my suss out the issue (be sure and check out his spot, http://www.ujuju.com - all pinball palace.) Turns out I had a bad ground to chassis connection. The area where the negative battery connector was attached to the chassis was too dirty and painted. A little filling and everything was working properly. Hooray!
Saturday, December 20, 2008
Batteries Are Heavy




Sunday, November 30, 2008
Rugalicious





Tuesday, November 25, 2008
Some interior, some wheels, some injuries...








Tuesday, November 11, 2008
Motor is IN!
took the day off (it was a holiday, officially) and managed to get the motor mounted today. A friend of mine help me scribe the plate on the bell housing (he used a dental pick!) I never would have thought of that. I t
Sunday, November 9, 2008
More Progress...old pics and new...
Okay, there's been good amount of progress. First pics showing the POR15 paint job I did on the interior, painting over the welded patch of floor pan, and various parts of the floor pan. The POR (paint over rust)15 is this noxious paint, that turns into a hard shell after painting (and using the prep products as well). But it keeps the rust away and gives a nice glossy finish. I got this in some strange places (face, inner thigh, back of knee...i have no idea.) I painted the e-brake boot as well. It's the original and was pretty stained up, so I tried using the POR on it. Turned out pretty well.


And here we have the same areas after we laid down some sound dampening material. Got it at SecondSkinAudio from Arizona. When I say we, I mean me, my dad and my kids. They enjoyed using the rollers on the material to help stick it to the floors/walls. When it's time to put the carpet in, I'll put a layer of heat insulation on top of this stuff which should allow for some cushioning as well.
At this point i'm feeling WAY too lazy to match up my text with the pictures. I've been writing html for over 10 years, and the blogger interface makes it pretty hard to get this to work correctly.
Anyhow, you'll also see my first succesfully created 2/0 connector wire. That's the big thick wire with fat connectors on the end. There's a photo of the 2/0 wire cutters, along with the crimping tool and a small cut of the 2 ought gauge wire. That crimping tool needs more than a standard hammer. I could crimp succesfully by slugging it with a 3 lb sledge hammer, about 5-6 times. When that was waking my son during naptime, I switched to the more passive vise. I liked the vise better. I just put that entire crimping tool in the vise with the wire and connector and crimped it right down. Then put the heatshrink tubing over the connection, and shrunk it down. It's quite the heavy duty heat shrink, and becomes about 1/8" thick once shrunk down.


Friday, October 10, 2008
Some pictures, yo~!

Here's the passenger side rear shocks I put in. Coil overs (it still had the original shocks!) to support the extra 150lbs or so that will be in the car.
Under the bonnet...where the gas tank used to be. Pretty dirty and rusty around the area where the wiper fluid reservoir and brake fluid reservoir sit. I took them out to clean them up. The brake fluid reservoir had a loose cap, (the original) that had just fallen off, so a lot of fluid had leaked all over there. Got a new cap for that, and getting some new flexi line for the fluid. You should see this area now, in the 'after' pics. Really looks great.



