Re: "Racing" the Duff Beer Electric Car

super caps are also hugely more dangerous. I like where this is going.

how much onboard generator do you need to make this idea work? At what point are you installing a small car engine that drives a dozen alternators to provide the electricity?

14 Time Loser FutilityMotorsport
2008 Saab 9-5Aero Wagon
Retired - 1989 Dodge Daytona Shelby 2011-2015 "Lifetime Award for Lack of Achievement" IOE, 3X I got screwed, Organizer's Choice

Re: "Racing" the Duff Beer Electric Car

We only average 9kw around the track. This is not a fast car. We will use 30kw when accelerating though. Theoretically we should be able to run a 10kw portable generator powered by a 1 or 2 cylinder lawn mower engine and use the super caps as an energy sink to store power while we are decelerating to power our next acceleration. That's how it all works in our heads.

If I take a portable generator out of its frame and remove all of the extra stuff from it, then I should be able to bolt it down in the back hatch area.

A bank of caps that will give me 30 seconds of full power will take up 2 cubic feet of space. That should fit in the car as well.

I don't know about the danger. One explodes and is over with. The other creates a super-hot fire than can't be put out until it burns itself out. Either is probably less dangerous than a tank full of gallons of a highly flammable liquid.

Everybody grab your brooms, it's shenanigans!

Re: "Racing" the Duff Beer Electric Car

The danger comment was more about what happens if you try to discharge through yourself. But you're already dealing with the battery packs, so it wasn't a serious comment.

I look forward to seeing where you guys go from here.

14 Time Loser FutilityMotorsport
2008 Saab 9-5Aero Wagon
Retired - 1989 Dodge Daytona Shelby 2011-2015 "Lifetime Award for Lack of Achievement" IOE, 3X I got screwed, Organizer's Choice

Re: "Racing" the Duff Beer Electric Car

Yeah, we try not to touch the car any more than we have to.

Everybody grab your brooms, it's shenanigans!

Re: "Racing" the Duff Beer Electric Car

Congrats on the IoE win! I've enjoyed reading about your progress. When I heard LeMons let you keep running during the CMP quiet hour, I laughed my ass off.

I can't believe you're thinking about re-engineering the whole car just when it sounds like you're finally getting a hang of the battery situation, but I would never discourage such ingenuity. Keep up the good work!

Command Pilot/Flight Director, Escape Velocity Racing
Index of Effluency, Heroic Fix, Class C Trophy, now hopelessly gunning for Class B.
Currently 1-2 vs. Team Fairlylame in the Class of 1964 Championships

181

Re: "Racing" the Duff Beer Electric Car

SpaceFrank wrote:

Congrats on the IoE win! I've enjoyed reading about your progress. When I heard LeMons let you keep running during the CMP quiet hour, I laughed my ass off.

This is BRILLIANT!

And yes, I'm sorry for my lack of manners. Huge CONGRATS to you and the team for your IOE to go along with your IOEE. I'm totally rooting for you all to keep climbing that ladder to a Class C win!

Re: "Racing" the Duff Beer Electric Car

Build number two?

https://us.letgo.com/en/i/1981-jet-elec … 08e938fb21

Re: "Racing" the Duff Beer Electric Car

I encourage everyone here in the strongest possible terms buy and race this car.

Everybody grab your brooms, it's shenanigans!

Re: "Racing" the Duff Beer Electric Car

SpaceFrank wrote:

I can't believe you're thinking about re-engineering the whole car just when it sounds like you're finally getting a hang of the battery situation


We think we've got a handle on it, but there's still a lot that is broken with the system and it still has a lot of pieces. We also blew up some batteries this weekend and need another $1500 Volt pack to move forward, so if we're dropping $1500 anyway.......

Getting the IOE kind of made us rethink the enterprise; we could continue to refine it as is, or we could declare ourselves victorious and do something totally different. In the end, we thought that it would be more fun to convert it to a terrible hybrid race car than to keep trying to work the bugs out of it as a terrible EV race car. Plus, after buying them and charging them and blowing them up and moving tens of thousands of pounds of them in and out of the car in a weekend, we have come to dislike batteries.

Everybody grab your brooms, it's shenanigans!

Re: "Racing" the Duff Beer Electric Car

If someone wants it I can help facilitate it. It's only about 15 miles from me.

Re: "Racing" the Duff Beer Electric Car

https://youtu.be/9lRcd2D-iRA

It's pretty boring until 34:22 when the battery alarm sounds. 108 cells, there's a monitor on a single 12S module. (the lowest partial charged block.) The entire pack was still reading 138.9V. Sadly the camera was too low to keep seeing the buzzards eating a dead something before T8.

Duff Beer Civic (#128) -- 2014 Sebring - Class B (#1 of 7), 2016 Barber - Class B
1981 Jet Electrica 007 [Plymouth Horizon TC3] (#128) -- Mk.1 - Index of Effluency Eco (IOEe) @ 2016 LeMons South Fall, Mk.2 - Judges' Choice @ 2017 'Shine Country Classic, Mk.3 - Index of Effluency @ 2017 Southern Discomfort

Re: "Racing" the Duff Beer Electric Car

What happened with the battery failure?

Re: "Racing" the Duff Beer Electric Car

Roger turned one too many laps on a partially charged pack - chasing down the astro van. In the process, one (or more) cells were pulled below 1.4v -- it had recovered to 1.4 by the time we checked it. I'll take it apart when I get everything off the RV. Charles did the same thing with a second partially charged pack -- without a BMS, we have no way to know the state of any single cell, and our chargers are too stupid perform a partial charge. (our arduino-signal-wire balance cables didn't help)

Duff Beer Civic (#128) -- 2014 Sebring - Class B (#1 of 7), 2016 Barber - Class B
1981 Jet Electrica 007 [Plymouth Horizon TC3] (#128) -- Mk.1 - Index of Effluency Eco (IOEe) @ 2016 LeMons South Fall, Mk.2 - Judges' Choice @ 2017 'Shine Country Classic, Mk.3 - Index of Effluency @ 2017 Southern Discomfort

Re: "Racing" the Duff Beer Electric Car

jfbeam wrote:

https://youtu.be/9lRcd2D-iRA

It's pretty boring until 34:22 when the battery alarm sounds. 108 cells, there's a monitor on a single 12S module. (the lowest partial charged block.) The entire pack was still reading 138.9V. Sadly the camera was too low to keep seeing the buzzards eating a dead something before T8.

wait, where are all the other cars?

https://www.facebook.com/greatglobsofoil/
This car....Is said to have a will of it's Own. Twisting its own body in rage...It accelerates on.
1978 Opel/Buick Isuzu - 3 races, IOE, Incredible Feats in Badge Engineering
http://i.imgur.com/m3KbADo.gif

190 (edited by ukemike 2017-05-05 08:33 PM)

Re: "Racing" the Duff Beer Electric Car

This should eventually get moved to the Epic Builds section. 

Could you just use an overpowered ICE spinning a big generator to power the electric motor?  It would still be a hybrid, but it would be wildly inefficient, ridiculous, and bizarre, but potentially more racy than what you have already.

Oh and here is my theme suggestion

Kilowat Guy!

https://www.google.com/search?q=electri … ilowat+guy


Has someone filmed one of your battery changes?  It'd be awesome to see a time lapse of that.

Re: "Racing" the Duff Beer Electric Car

And the sound of being green. [ https://youtu.be/ZpSHSGavfLQ ] We did about 7mpg this time.

Duff Beer Civic (#128) -- 2014 Sebring - Class B (#1 of 7), 2016 Barber - Class B
1981 Jet Electrica 007 [Plymouth Horizon TC3] (#128) -- Mk.1 - Index of Effluency Eco (IOEe) @ 2016 LeMons South Fall, Mk.2 - Judges' Choice @ 2017 'Shine Country Classic, Mk.3 - Index of Effluency @ 2017 Southern Discomfort

Re: "Racing" the Duff Beer Electric Car

kakarot1232001 wrote:

wait, where are all the other cars?

It was quiet hour.

Everybody grab your brooms, it's shenanigans!

Re: "Racing" the Duff Beer Electric Car

jfbeam wrote:

And the sound of being green. [ https://youtu.be/ZpSHSGavfLQ ] We did about 7mpg this time.

That's about what our 460 Big Block LTD gets on track.

2008- 2010:  1966 Volvo 122, "Charlie"
2010-present:  1975 Ford LTD Landau...doesn't have a name?