My Dusty 71 GMCe Electruck

[biketopia]

Originally Posted by gregski

top speed test #1

82.7 mph

so took her on the highway for the first time and oh my gawd she drove like a dream, effortless! I just jumped on, on one entrance and did not stay on too long cause i had no idea how far she could go on speeds upwards of 65 mph, but she did fine. Keep in mind she has no side windows yet and that creates drag, and i didn't fully commit on this first test, so this is just a start. Also only running on one motor in that lexus gs450h transmission aka mg2, we are not sending any torque commands to the smaller motor aka mg1 at this time, this is on purpose.

My truck specs:
215/65 r17 tires
3.73 rear differential

speed tests should be performed on a closed course / private road.

update from me in the future: i did not have my torque set to max on this test, i forgot about that!

nice

[yuccales]

Gregski, that is awesome! Glad to hear it ran smooth! Here is my analog version of your "all time maximum speed". Never ran Goldie any faster then this. Got kinda spooky.

[Gregski]

Originally Posted by yuccales

Gregski, that is awesome! Glad to hear it ran smooth! Here is my analog version of your "all time maximum speed". Never ran Goldie any faster then this. Got kinda spooky.

Wow, I luv it, she done did 95 MPH? was there wobble or a whole lot shaking going on?

[yuccales]

Originally Posted by Gregski

Wow, I luv it, she done did 95 MPH? was there wobble or a whole lot shaking going on?

Had good tires balanced well so pretty smooth. What was worrisome was the faster I went, the free play in the steering box seemed to get worse, plus the engine sounded like it was going to let go. It didn't. The truck let me know driving with one hand, working a camera with the other was a pretty dumb thing to do! As for gas prices, $5.25 per for the cheap stuff today!

[Gregski]

Reason Number: 5,499 to convert to electric

[Gregski]

I will never understand why dingleberries block out their PUBLIC license plates when they list cars for sale for instance, it makes zero sense

[Richard]

Originally Posted by Gregski

I will never understand why dingleberries block out their PUBLIC license plates when they list cars for sale for instance, it makes zero sense

There are sources to get registered owner and address from the information (will not share). No way to prevent when driving around, but why post on the internet for more specific people to see?

[Gregski]

Originally Posted by Richard

There are sources to get registered owner and address from the information (will not share). No way to prevent when driving around, but why post on the internet for more specific people to see?

what's the difference between driving around and being parked ?

because it is public information and what are the likes that some dude across the globe is going to pay for some subscription service to get my address, then fly out to my house and do what, help me take out the dents on the bed of my beater, lol ???

trust me I have tried to get the addresses of the hit and run accidents I was in and it's not as easily obtained from a license plate as you think, unless you are in law enforcement of some sort

the last screen shot below cracks me up, they are basically asking you to provide your personal information so that they can give you your personal information

[Richard]

Originally Posted by Gregski

what's the difference between driving around and being parked ?

because it is public information and what are the likes that some dude across the globe is going to pay for some subscription service to get my address, then fly out to my house and do what, help me take out the dents on the bed of my beater, lol ???

trust me I have tried to get the addresses of the hit and run accidents I was in and it's not as easily obtained from a license plate as you think, unless you are in law enforcement of some sort

the last screen shot below cracks me up, they are basically asking you to provide your personal information so that they can give you your personal information

Do not have to pay for the information. I can get it.

[Gregski]

Originally Posted by Richard

Do not have to pay for the information. I can get it.

PM me my personal information

[Gregski]

so been working with a friend from the East Coast on my digital gauges


EV Converstion: Artur K of MotoArt, digital gauges, introduction

[D.B]

Originally Posted by Gregski

so been working with a friend from the East Coast on my digital gauges


EV Converstion: Artur K of MotoArt, digital gauges, introduction

I noticed you have Temp, Oil and Fuel gauges. What are these actually reading.

[Gregski]

Originally Posted by D.B

I noticed you have Temp, Oil and Fuel gauges. What are these actually reading.

very good question:

Temp is coolant temp just like in a regular vehicle, a lot of the EV components are liquid cooled, so this truck still has a radiator and a cooling loop that goes from the liquid cooled battery charger to the liquid cooled inverter to the liquid cooled motors inside the transmission. The coolant is circulated using a Tesla electric water pump.

Oil is what we are using to monitor the transmission fluid that circulates through the automatic transmission and the oil cooler which is integrated into the stock GM radiator just like with a TH350 transmission.

Fuel is actually showing us remaining battery capacity at the moment simply based on remaining voltage level. Since the gauge is only a two digit unit we are doing a little trick and simply subtracting 300 volts from the total and just displaying the remaining voltage which ends up almost perfectly coinciding with 0-100 percent charge as the full charge of this battery pack is 398 volts, so it works out great.

[D.B]

Originally Posted by Gregski

very good question:

Temp is coolant temp just like in a regular vehicle, a lot of the EV components are liquid cooled, so this truck still has a radiator and a cooling loop that goes from the liquid cooled battery charger to the liquid cooled inverter to the liquid cooled motors inside the transmission. The coolant is circulated using a Tesla electric water pump.

Oil is what we are using to monitor the transmission fluid that circulates through the automatic transmission and the oil cooler which is integrated into the stock GM radiator just like with a TH350 transmission.

Fuel is actually showing us remaining battery capacity at the moment simply based on remaining voltage level. Since the gauge is only a two digit unit we are doing a little trick and simply subtracting 300 volts from the total and just displaying the remaining voltage which ends up almost perfectly coinciding with 0-100 percent charge as the full charge of this battery pack is 398 volts, so it works out great.

Thanks for explaining it. I get the fuel gauge showing 59 percent. But the temp showing 23 degrees and the oil showing 35 psi. Those readings baffle me. Why so low?

[Gregski]

Originally Posted by D.B

Thanks for explaining it. I get the fuel gauge showing 59 percent. But the temp showing 23 degrees and the oil showing 35 psi. Those readings baffle me. Why so low?

I think in that pic we had certain things turned off so that they would not make noise in the video we were shooting and talking over and so the 23 is the minimum temp the gauge can show so 23° F the 35 is not PSI it is the PWM percentage that we are sending to the oil pump to control it's speed, that is dynamic based on torque.

We are editing a video with more detail and should post it shortly.

[1970 CST Short Wide]

My truck has had a SB 350, A BB 454 and now an LS1. My wife asked me if I finely had the Engine I wanted. I told her “ There’s always Tesla”. LOL

[Gregski]

Originally Posted by 1970 CST Short Wide

My truck has had a SB 350, A BB 454 and now an LS1. My wife asked me if I finely had the Engine I wanted. I told her “ There’s always Tesla”. LOL

that would be an Excellent Choice! lemme grab my Volt Meter and I'll be right over to help you get started! and I'm sure we'll make a lot of friends on here ��

in related news, My Gawd My Truckulator Runs AmazeBallz! we may have raced a BMmer can't confirm nor deny ����

[Gregski]

So I bought this truck back in 2017 as a Mom & Son project to force myself to spend more time with my newly retired mother. [that's a big lie] the truck was a total POS and her house was closer to the seller's place than my house, so I two wheel UHAUL car trailered it there instead ! but it's the thought that counts

we did wrench on it together and took a ton of pics which then I lost when my SSD failed literally as I was backing stuff up to the Google

Destination: Mom's House, where it all begin
Distance: 13 miles
Terrain: Streets (no freeway)


and here she is back where it all begin: (yup took mum around the block in this one, like I have done in all my prior builds)


.

[Gregski]

If you don't tell, than I won't tell what's temporarily holding my gauge cluster bezel in !

[ I hate these friggen things, and that's why I probably have sum cause I refused to pop them back in to whatever Honyota they came out of ]

you agree or disagree ?

[D.B]

Originally Posted by Gregski

If you don't tell, than I won't tell what's temporarily holding my gauge cluster bezel in !

[ I hate these friggen things, and that's why I probably have sum cause I refused to pop them back in to whatever Honyota they came out of ]

you agree or disagree ?

Agree and the ones that are barbed.

[junksaver]

It took me 2 weeks, but I finally read your whole build thread. Very impressive. That's a lot of research to figure all that out.

When I went to Votech for autobody in the early 90s there was a Toyota electric truck they had built that stayed in the shop. We had to move it in and out for more room. It was interesting. It was a lot less complicated than yours. I can't remember for sure, but I think it had a bunch of lead acid batteries in the bed. The motor under the hood wasn't very big and it didn't have any cooling. Seemed very simple.

[Gregski]

Originally Posted by junksaver

It took me 2 weeks, but I finally read your whole build thread. Very impressive. That's a lot of research to figure all that out.

wow thank you so much, you may be the First !!!

Originally Posted by junksaver

When I went to Votech for autobody in the early 90s there was a Toyota electric truck they had built that stayed in the shop. We had to move it in and out for more room. It was interesting. It was a lot less complicated than yours. I can't remember for sure, but I think it had a bunch of lead acid batteries in the bed. The motor under the hood wasn't very big and it didn't have any cooling. Seemed very simple.

yes the game has changed tremendously since then, the one huge difference is that back in the 90s, most likely that truck was powered by Direct Current aka DC electricity (low voltage (96v or less maybe) / high current) so there was no need for a box called an Inverter. This made setup very simple cause all you needed was a motor + batteries + a controller, then simply by giving it more or less volts using a potentiometer aka a fancy volume knob you made it go faster or slower. These days we use Alternating Current 3 phase motors. This allows us to run much thinner wires and push less amps at much higher speeds aka volts (360+).

I built an electric motorcycle using those types of DC motors and yes lead acid, well gel batteries, called a Suzuki "Wattana" it should be out there on the InterWebs somewhere

[junksaver]

I'm glad you can figure all that out. It's too much to wrap my brain around ��

[Gregski]

Originally Posted by junksaver

I'm glad you can figure all that out. It's too much to wrap my brain around ��

thank you I hear you, but keep in mind electric vehicles have a fraction of the amount of parts that gasoline vehicles have

if we were to take two 16 year old kids, say twins, and teach them how to drive and maintain a comparable ICE (Internal Combustion Engine) and electric vehicle and after say two years have them switch, I wonder what they would tell us?

"What, you have to change the oil twice a year?"
"What's SMOG?"
"What's a tune up?"
"So you have to rev your engine to 5,000 RMP before it makes top horse power and torque, why?"
"What's that noise?"
"Why does the car shake so violently?"
"What do you mean you fuel up when you sleep?"
"What do you mean you can drive your car across the desert, where do you charge?" LoL


Engines vs Motors

The BMW S85 engine develops 507 hp and 384 lb-ft of torque, and revs up to 9,000 RPM, making it the most powerful engine on their list.

The Tesla Model S/X Large Drive Unit (LDU) aka motor produces 636 hp and 480 lb-ft of torque and spins up to 15,000 RPM.

[yuccales]

Originally Posted by Gregski

Engines vs Motors

The BMW S85 engine develops 507 hp and 384 lb-ft of torque, and revs up to 9,000 RPM, making it the most powerful engine on their list.

The Tesla Model S/X Large Drive Unit (LDU) aka motor produces 636 hp and 480 lb-ft of torque and spins up to 15,000 RPM.

Great comparison and pictures.