Another wack job. - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


General Miata Chat A place to talk about anything Miata

Reply
 
 
 
LinkBack Thread Tools
Old 12-29-2008, 12:12 PM   #1
Elite Member
Thread Starter
iTrader: (30)
 
Join Date: Aug 2007
Location: Va Beach
Posts: 7,282
Total Cats: 0
Default Another wack job.

Nice work, but kinda silly if you ask me.

ELECTRIC CAR - 2001 Mazda Miata
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
levnubhin is offline   Reply With Quote
Old 12-29-2008, 12:40 PM   #2
Elite Member
iTrader: (46)
 
Stein's Avatar
 
Join Date: Dec 2007
Location: Nebraska
Posts: 4,812
Total Cats: 138
Default

That's gotta be one heavy sumbitch.
Stein is offline   Reply With Quote
Old 12-29-2008, 01:07 PM   #3
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Chicago (Over two miles from Wrigley Field. Fuck the Cubs. Fuck them in their smarmy goat-hole.)
Posts: 26,317
Total Cats: 1,915
Default

3,200 pounds according to his website.

Makes sense. The Miata engine is a surprisingly heavy beast, so eliminating it probably offset a lot of that lead. Twelve flooded deep-cycle batteries, probably >120lb each. Granted, Li-ion is not for the meek, but he coulda saved some weight by using Odyssey Hawkers or some other starved-electrolyte battery. Or even NiMH batteries- they're fairly popular in EV conversions.

Still, my primary concern is not total weight (after all, a BMW M3 Coupe weighs 3,700 lbs) but rather weight distribution. He's clearly shifted the weight rearwards, with a substantial amount of it hanging aft of the rear wheel centerline.

He should have eliminated the transmission altogether, put the electric motor in the tunnel, and connected it directly to the diff. That would have freed up more space in the front to relocate some of that lead forward.

It'll be a fine short-range commuter car for FL, but I expect it would throw itself off the first cliff it encountered in the SoCal twisties...
Joe Perez is online now   Reply With Quote
Old 12-29-2008, 01:11 PM   #4
Elite Member
Thread Starter
iTrader: (30)
 
Join Date: Aug 2007
Location: Va Beach
Posts: 7,282
Total Cats: 0
Default

I just don't see paying 20k for a car that can't go farther than 20-25 miles. You can no longer put anything in the trunk so there goes the grocery getter. About all you could do with it is pick up a pack of smokes and a 6 pack.
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
levnubhin is offline   Reply With Quote
Old 12-29-2008, 01:45 PM   #5
Elite Member
iTrader: (2)
 
Newbsauce's Avatar
 
Join Date: Jul 2006
Location: NoVA
Posts: 2,304
Total Cats: 2
Default

There's one around here that pops up for sale fairly often. 20 miles? No thanks.
Newbsauce is offline   Reply With Quote
Old 12-29-2008, 03:06 PM   #6
Hear me Meow
iTrader: (3)
 
skidude's Avatar
 
Join Date: Apr 2008
Location: Outside Portland Maine
Posts: 1,994
Total Cats: 13
Default

That's a pretty neat little car but way too heavy and too much weight in the back. I love the idea of replacing the trans with a motor and putting the batteries in the front, but then how do you get reverse? Will a motor controller do that for you?
skidude is offline   Reply With Quote
Old 12-29-2008, 03:24 PM   #7
Elite Member
iTrader: (13)
 
Join Date: Nov 2006
Location: Tigard, Oregon
Posts: 3,908
Total Cats: 0
Default

http://www.evporsche.com/






Can't blame the guy for trying. Too bad he went cheap on the batteries. The Lithium Ions would have saved a ton of weight and given better range.
cueball1 is offline   Reply With Quote
Old 12-29-2008, 03:35 PM   #8
Antisaint
iTrader: (17)
 
Vashthestampede's Avatar
 
Join Date: Feb 2007
Location: Danbury, CT
Posts: 4,659
Total Cats: 54
Default

**** that. I agree with Joe, weight distribution is probably a joke.

Lets take a small car with perfect weight distribution, already gets good MPGs, and is fun to drive for a couple hundred miles. Now...mess with the weight distribution in a way that negatively effects the way the car drives. Then make it so you can barely keep up with traffic on the highway, none the less can barely make it anywhere in 20-25 miles. Now....I wonder how fun it is to drive, even compared to a bone stock NB.

$20K? :roflcopter:

Vash-
Vashthestampede is offline   Reply With Quote
Old 12-29-2008, 04:03 PM   #9
Senior Member
iTrader: (1)
 
Join Date: Jun 2006
Location: Outside of the Loop-ATL
Posts: 754
Total Cats: 0
Default

Quote:
Originally Posted by skidude108 View Post
That's a pretty neat little car but way too heavy and too much weight in the back. I love the idea of replacing the trans with a motor and putting the batteries in the front, but then how do you get reverse? Will a motor controller do that for you?

It still has a transmission. It just replaced the 4cyl motor with a little electric motor.

Either way the car is a joke..10 hour charge time to drive 20 miles. I think I can walk faster then that.

I had a teacher in college talk about his old friend who had one of the few all electric Rav4. 150 miles per charge. If the miata could got 100 mile round trip and could keep the trunk it would a great electric car. If you lived somewhere like Socal, you could buy solar panels and not have to pay for gas anymore(atleast of intown trips).
wildfire0310 is offline   Reply With Quote
Old 12-29-2008, 04:29 PM   #10
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Chicago (Over two miles from Wrigley Field. Fuck the Cubs. Fuck them in their smarmy goat-hole.)
Posts: 26,317
Total Cats: 1,915
Default

Quote:
Originally Posted by wildfire0310 View Post
It still has a transmission. It just replaced the 4cyl motor with a little electric motor.
I'm pretty sure he was responding to where I said "He should have eliminated the transmission altogether, put the electric motor in the tunnel, and connected it directly to the diff. That would have freed up more space in the front to relocate some of that lead forward."

In a lightweight application such as a Miata, I'd rather see the builder sacrifice some range in favor of lightness and system voltage- the latter being the primary factor in determining peak torque.

Say that he spent a few extra bucks and went with an Li-ion battery system. There's no need for a $50,000 Tesla-style battery, just enough to make 200 volts and give him 40-50 miles of useful range. That would keep the weight down and the performance up (both handling and acceleration.)

Now, put a class 1 trailer hitch on the back, and build a small trailer carrying an ICE / generator. These are not uncommon, actually. They call 'em towable range extenders, and with one connected and running, your EV is now a plugin Hybrid. The idea is that for everyday around-town use you leave the trailer at home and run on the batteries. When you need to make a longer trip, you hitch up the range extender and run the gas engine. A properly sized TRE will allow you to run the car at normal speed even with zero charge on the battery, and a well-designed system will permit the TRE to both power the traction motor and recharge a depleted battery at the same time.
Joe Perez is online now   Reply With Quote
Old 12-29-2008, 04:33 PM   #11
Hear me Meow
iTrader: (3)
 
skidude's Avatar
 
Join Date: Apr 2008
Location: Outside Portland Maine
Posts: 1,994
Total Cats: 13
Default

Quote:
Originally Posted by Joe Perez View Post
Now, put a class 1 trailer hitch on the back, and build a small trailer carrying an ICE / generator.
That is brilliant. I love it.
skidude is offline   Reply With Quote
Old 12-29-2008, 04:41 PM   #12
Newb
 
Join Date: Oct 2008
Location: DFW, TX
Posts: 13
Total Cats: 0
Default

The really sad part is that 10 hours x 15 amps x 115 volts= 17.25 kwh...which around here costs twice as much as a gallon of gasoline.
jiiv is offline   Reply With Quote
Old 12-29-2008, 04:44 PM   #13
Junior Member
iTrader: (1)
 
Join Date: Apr 2008
Location: Springfield Oregon
Posts: 174
Total Cats: 0
Default

My biggest problem with that conversion is it's being sold for more than double the cost of the parts, and low end parts at that (except for the motor).

It's not even using a nice controller such as the Zilla and not even orbital or hawker batteries (which weigh 2/3 to 1/2 and have higher energy/weight ratios)....this was done as cheap as possible and is being sold for an exorbitant amount. This car should be $10k-$12k.
miatamoxie is offline   Reply With Quote
Old 12-29-2008, 05:01 PM   #14
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Chicago (Over two miles from Wrigley Field. Fuck the Cubs. Fuck them in their smarmy goat-hole.)
Posts: 26,317
Total Cats: 1,915
Default

Quote:
Originally Posted by skidude108 View Post
That is brilliant. I love it.
It's not a revolutionary idea. AC Propulsion offered them as an accessory with the tZero, Tesla is talking about them, and folks have been home-brewing them for as long as there have been EVs. The engine need not be all that large, either. Lots of folks doing this are using motorcycle engines in the 500-600cc range, which is more than enough to deliver cruise power- remember that the battery (assuming it is charged) is still providing the grunt for acceleration off the line. Here's an example: Rav Long Ranger A 500cc engine driving an SUV. Not bad. And if you really wanna be a green weenie, you can run the aux engine off LPG, CNG, biodiesel, cooking oil, or whatever floats your boat. (Obviously this somewhat compromises the "go-anywhere" capability of the TRE.)

A while back, I remember seeing a couple of folks who had done something similar to this on the ultra-cheap. Imagine an EV-converted VW Rabbit. Got the picture in your head? Ok, now imagine that Rabbit being pushed along (mechanically) by the complete front end of a second VW Rabbit attached to the back of it via a trailer hitch. Think I'm insane? EV Pusher Trailer
Joe Perez is online now   Reply With Quote
Old 12-29-2008, 05:42 PM   #15
Elite Member
iTrader: (46)
 
Stein's Avatar
 
Join Date: Dec 2007
Location: Nebraska
Posts: 4,812
Total Cats: 138
Default

Quote:
Originally Posted by levnubhin View Post
About all you could do with it is pick up a pack of smokes and a 6 pack.

Or hairy armpit chicks.
Stein is offline   Reply With Quote
Old 12-29-2008, 05:48 PM   #16
Elite Member
iTrader: (12)
 
Join Date: Apr 2008
Location: Longs, SC
Posts: 2,583
Total Cats: 13
Default

icantthink4155 is offline   Reply With Quote
Old 12-29-2008, 06:24 PM   #17
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

how does it make vacuum for the brakes?
hustler is offline   Reply With Quote
Old 12-29-2008, 06:44 PM   #18
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Chicago (Over two miles from Wrigley Field. Fuck the Cubs. Fuck them in their smarmy goat-hole.)
Posts: 26,317
Total Cats: 1,915
Default

Quote:
Originally Posted by hustler View Post
how does it make vacuum for the brakes?
The same way they make hydraulic pressure for the power steering; with aux motors.

For brake vacuum there are some aftermarket units available, or you can take the vacuum pump from a diesel and attach an electric motor to it.

For the steering, a number of cars actually came from the factory with electric power steering pumps, and these are often scavenged. The Fiero and MR2 used electric steering pumps, as did a couple of Euro-only vehicles.
Joe Perez is online now   Reply With Quote
Old 12-29-2008, 06:57 PM   #19
Elite Member
iTrader: (13)
 
Join Date: Nov 2006
Location: Tigard, Oregon
Posts: 3,908
Total Cats: 0
Default

Screw electric.

For the truly green consumer I've created a minivan that runs on cadavers and goat urine. I sold the 1st two I built to Daryl Hannah and Sean Penn.
cueball1 is offline   Reply With Quote
Old 12-29-2008, 08:04 PM   #20
Junior Member
iTrader: (6)
 
Join Date: Aug 2008
Location: New Zealand
Posts: 250
Total Cats: 3
Default

2 words....


GAY!
ogwazza is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
weird glitch changing my tables 240_to_miata MEGAsquirt 19 11-03-2010 09:14 PM
My NA Project Thread... finally subikid DIY Turbo Discussion 3 08-14-2009 10:38 AM
Cops issue - interference with LC-1 Fidgitk Engine Performance 12 05-20-2009 02:16 AM
images, database, and browser cache y8s Front Desk 11 01-12-2009 01:30 PM
A/F 13.2:1 at WOT ThePass Prefabbed Turbo Kits 38 05-06-2008 04:39 PM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 03:06 PM.