Karma with 4 drive modes (2 additional) - Page 4 - Fisker Buzz Forums
Fisker Buzz Forums

User Tag List

Reply
 
LinkBack Thread Tools
Old 08-25-2015, 08:56 PM   #31 (permalink)
Member
 
Join Date: Apr 2013
Posts: 80
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 21 Post(s)
Default

Just want to say thanks. Sincerely.

Just one quick question: under the sport mode - where both battery and engine is being used - will the car be faster?
asulil is offline   Reply With Quote
Old 08-25-2015, 09:18 PM   #32 (permalink)
Liked, but not well liked
 
Join Date: Jul 2015
Posts: 1,172
Mentioned: 132 Post(s)
Tagged: 1 Thread(s)
Quoted: 456 Post(s)
Default

To me Quick=Acceleration Fast=Speed

Stealth will produce more power >200kw vs 180kw and we are working on a solution for Sport. We run the vehicle completely relaxed (all power parameters unlocked) but there are some hardware limitations with the vehicle that we are attempting to overcome (at peak power/wot). Still too early to tell how much quicker it will be but it will be quicker. With regards to faster I believe that is limited to 125mph and that is mainly due to the gearing? Nothing much we can do there other than change the gear to a higher ratio or over rev the TM's but this will only be useful maybe on the autobahn or a track?
PowerSource is offline   Reply With Quote
Old 08-25-2015, 11:02 PM   #33 (permalink)
Super Moderator
 
Fabulist's Avatar
 
Join Date: Apr 2011
Location: San Francisco, CA
Posts: 4,658
Mentioned: 44 Post(s)
Tagged: 1 Thread(s)
Quoted: 402 Post(s)
Default

Quote:
Originally Posted by PowerSource View Post
To me Quick=Acceleration Fast=Speed

Stealth will produce more power >200kw vs 180kw and we are working on a solution for Sport. We run the vehicle completely relaxed (all power parameters unlocked) but there are some hardware limitations with the vehicle that we are attempting to overcome (at peak power/wot). Still too early to tell how much quicker it will be but it will be quicker. With regards to faster I believe that is limited to 125mph and that is mainly due to the gearing? Nothing much we can do there other than change the gear to a higher ratio or over rev the TM's but this will only be useful maybe on the autobahn or a track?
Don't the inverters have built-in thermal protection that kicks in independently? So even without the limits, the components protect themselves, right?
__________________
-- Fab.

Original owner of 2012 Eco Sport Black (Eclipse) with Monsoon Tritone Interior. VIN: -0641
Fabulist is offline   Reply With Quote
 
Old 08-25-2015, 11:15 PM   #34 (permalink)
Liked, but not well liked
 
Join Date: Jul 2015
Posts: 1,172
Mentioned: 132 Post(s)
Tagged: 1 Thread(s)
Quoted: 456 Post(s)
Default

Quote:
Originally Posted by Fabulist View Post
Don't the inverters have built-in thermal protection that kicks in independently? So even without the limits, the components protect themselves, right?
Not a thermal issue with the inverters.
PowerSource is offline   Reply With Quote
Old 08-27-2015, 10:50 AM   #35 (permalink)
Junior Member
 
Join Date: Dec 2012
Posts: 25
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Default

Why wouldn't Fisker just hire you to do this for them? Like a Brabus, John Cooper Works or AC Schnitzer, right?
Nikon is offline   Reply With Quote
Old 08-27-2015, 11:20 AM   #36 (permalink)
Super Moderator
 
Fabulist's Avatar
 
Join Date: Apr 2011
Location: San Francisco, CA
Posts: 4,658
Mentioned: 44 Post(s)
Tagged: 1 Thread(s)
Quoted: 402 Post(s)
Default

Quote:
Originally Posted by Nikon View Post
Why wouldn't Fisker just hire you to do this for them? Like a Brabus, John Cooper Works or AC Schnitzer, right?
This may be one reason. (Post # 19 in this thread).
__________________
-- Fab.

Original owner of 2012 Eco Sport Black (Eclipse) with Monsoon Tritone Interior. VIN: -0641
Fabulist is offline   Reply With Quote
Old 08-27-2015, 11:29 PM   #37 (permalink)
Member
 
Join Date: Apr 2013
Posts: 80
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 21 Post(s)
Default

Quote:
Originally Posted by PowerSource View Post
To me Quick=Acceleration Fast=Speed

Stealth will produce more power >200kw vs 180kw and we are working on a solution for Sport. We run the vehicle completely relaxed (all power parameters unlocked) but there are some hardware limitations with the vehicle that we are attempting to overcome (at peak power/wot). Still too early to tell how much quicker it will be but it will be quicker. With regards to faster I believe that is limited to 125mph and that is mainly due to the gearing? Nothing much we can do there other than change the gear to a higher ratio or over rev the TM's but this will only be useful maybe on the autobahn or a track?
Just out of curiosity, what are the hardware limitations ?
asulil is offline   Reply With Quote
Old 08-28-2015, 02:09 PM   #38 (permalink)
Senior Member
 
Mcguiver's Avatar
 
Join Date: Jul 2013
Location: Catonsville Maryland
Posts: 144
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Default

Thats a awesome mod, so i can get two to three charges while driving in ER mode.
Now im excited once again about my karma getting more regen braking and better range...
Mcguiver is offline   Reply With Quote
Old 09-04-2015, 10:55 PM   #39 (permalink)
Senior Member
 
JCMorrill's Avatar
 
Join Date: Jan 2015
Location: Scottsdale, AZ
Posts: 829
Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 254 Post(s)
Default

So, PowerSource ... I hope you're still willing to share your expertise with me (or anybody else who can answer this) ... Obviously, your mod would answer my issue completely. But, until then ... I want to understand better exactly what is happening when we put a stock Karma into Sport mode while cruising on the highway when you're well above 26 Stealth miles. The ICE is running, yet the battery is being drained. Is it draining more slowly than it would otherwise? Is the engine just mostly idling and not doing much to generate charge unless you step on it and the computer detects you are wanting "extra" power?

In short, is Sport mode doing any good to extend your future electric only range at all if you're just cruising along above 26 Stealth miles? Is there ever any point to Sport Mode in normal driving (above 60% SOC) on a stock Karma if you're not needing rapid acceleration? What is the engine doing?

This is an experiment I've never tried myself, but I have a 60-70 mile trip that I'd really like to try to preserve my Stealth miles for the latter part of as much as possible because where I'm going is to an EV Car Event. Seems unconscionable to show up burning gas. (Feel free to gloat, PowerSource!! I fully understand the irony. ). Does anybody know?

Last edited by JCMorrill; 09-04-2015 at 11:03 PM.
JCMorrill is offline   Reply With Quote
Old 09-05-2015, 02:17 PM   #40 (permalink)
Super Moderator
 
Fabulist's Avatar
 
Join Date: Apr 2011
Location: San Francisco, CA
Posts: 4,658
Mentioned: 44 Post(s)
Tagged: 1 Thread(s)
Quoted: 402 Post(s)
Default

Quote:
Originally Posted by JCMorrill View Post
So, PowerSource ... I hope you're still willing to share your expertise with me (or anybody else who can answer this) ... Obviously, your mod would answer my issue completely. But, until then ... I want to understand better exactly what is happening when we put a stock Karma into Sport mode while cruising on the highway when you're well above 26 Stealth miles. The ICE is running, yet the battery is being drained. Is it draining more slowly than it would otherwise? Is the engine just mostly idling and not doing much to generate charge unless you step on it and the computer detects you are wanting "extra" power?

In short, is Sport mode doing any good to extend your future electric only range at all if you're just cruising along above 26 Stealth miles? Is there ever any point to Sport Mode in normal driving (above 60% SOC) on a stock Karma if you're not needing rapid acceleration? What is the engine doing?

This is an experiment I've never tried myself, but I have a 60-70 mile trip that I'd really like to try to preserve my Stealth miles for the latter part of as much as possible because where I'm going is to an EV Car Event. Seems unconscionable to show up burning gas. (Feel free to gloat, PowerSource!! I fully understand the irony. ). Does anybody know?
As I understand it, the only difference in current sport mode between having more than 50% SOC (26+ indicated miles) and 49% or less SOC is how much power you have available. In the former mode, you have 360KW (180 KW from the Battery + 180KW from ICE), and in the latter mode, you only get 180KW from the battery with ICE replacing electrons as you use them. To put it another way, 26+ Miles indicated range is like having a V12, while less than 26 Miles is like having a V6. The actual amount of power you use in either mode is determined by your driving and power demand.

@PowerSource's modifications would provide a lot more flexibility in power management, so you can have full power available at a greater range of SOC, as well as filling the HV battery back up on the move to make the full power available during a larger part of the operating envelope. It will be very exciting to see the Karma achieve its full potential with these modifications.
__________________
-- Fab.

Original owner of 2012 Eco Sport Black (Eclipse) with Monsoon Tritone Interior. VIN: -0641
Fabulist is offline   Reply With Quote
Reply

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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Battery depleted Stealth v. Sport modes Fabulist Fisker Karma 3 04-05-2012 09:45 PM
You Know You Drive A Karma When ... marcus Fisker Karma 22 03-01-2012 12:38 AM
Stealth and Sport performance modes Wimbledon Fisker Karma 0 11-30-2010 11:32 PM
Fisker secures additional funding Wimbledon The Fisker Lounge 1 01-15-2010 10:53 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -4. The time now is 11:58 PM.



Powered by vBulletin® Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0 PL2
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.
User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.