Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

> It's not much but it is FORWARD progress!, Flywheel, disk, and P. Plate
sgomes
post Aug 29 2004, 02:24 PM
Post #1


Electric Member
***

Group: Members
Posts: 815
Joined: 6-May 04
From: Campbell, CA
Member No.: 2,029
Just a few progress pics for the curious. It's not a huge amount of progress but at least it feels like the project is starting to move forward! (IMG:style_emoticons/default/smilie_pokal.gif)

This is a pic of the taper lock hub. It's the reason for my question about flywheel distance. I have about 5 cm of play here so I needed to know where the flywheel was SUPPOSED to end up. Thank you Demick for the fantastic data dump you gave me! (IMG:style_emoticons/default/pray.gif)

The amazing thing about taper lock hubs is that you can remove the bolts completely and the thing still won't come off!


Attached image(s)
Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
 
 Reply to this topicStart new topic
Replies(1 - 15)
sgomes
post Aug 29 2004, 02:25 PM
Post #2


Electric Member
***

Group: Members
Posts: 815
Joined: 6-May 04
From: Campbell, CA
Member No.: 2,029
Flywheel: Demick -- the final distance was 44.2mm


Attached image(s)
Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Brad Roberts
post Aug 29 2004, 02:25 PM
Post #3


914 Freak!
***************

Group: Members
Posts: 19,148
Joined: 23-December 02
Member No.: 8
Region Association: None
Cool. So you can use a stock flywheel/pp/disc setup ?


B
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
sgomes
post Aug 29 2004, 02:26 PM
Post #4


Electric Member
***

Group: Members
Posts: 815
Joined: 6-May 04
From: Campbell, CA
Member No.: 2,029
Now THIS is how to spin up a motor on the bench!!!

(and you thought your STARTER motor sucked amps!!! (IMG:style_emoticons/default/cool_shades.gif) )


Attached image(s)
Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Brad Roberts
post Aug 29 2004, 02:26 PM
Post #5


914 Freak!
***************

Group: Members
Posts: 19,148
Joined: 23-December 02
Member No.: 8
Region Association: None
Ha ha.. we both posted at the exact same time.. TWICE.


B
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
sgomes
post Aug 29 2004, 02:27 PM
Post #6


Electric Member
***

Group: Members
Posts: 815
Joined: 6-May 04
From: Campbell, CA
Member No.: 2,029
Brad, yep it's stock all the way. Ok, I didn't use the engine seal thingy since I don't have any oil in my motor! (IMG:style_emoticons/default/blink.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
sgomes
post Aug 29 2004, 02:29 PM
Post #7


Electric Member
***

Group: Members
Posts: 815
Joined: 6-May 04
From: Campbell, CA
Member No.: 2,029
Oh and just cuz... here is the P. Plate:
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
sgomes
post Aug 29 2004, 02:29 PM
Post #8


Electric Member
***

Group: Members
Posts: 815
Joined: 6-May 04
From: Campbell, CA
Member No.: 2,029
This time for sure..


Attached image(s)
Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Aaron Cox
post Aug 29 2004, 02:43 PM
Post #9


Professional Lawn Dart
***************

Group: Retired Admin
Posts: 24,541
Joined: 1-February 03
From: Corona, CA
Member No.: 219
Region Association: Southern California
wow!...

now what do u use as final drive ratio... just 5th gear?
whats the torque on that e motor?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
sgomes
post Aug 29 2004, 02:57 PM
Post #10


Electric Member
***

Group: Members
Posts: 815
Joined: 6-May 04
From: Campbell, CA
Member No.: 2,029
Comparing gas engines to electric motors is always complicated. If I told you that this motor is rated at 20 Hp you'd say well gee that doesn't seem like enough. Problem is gas engines are rated at peak Hp whereas electric motors are rated at continuous Hp. The peak on this motor is rated at 90Hp but many people have run it 2 or 3 times that! Torque is even more complicated.

I'm using a stock 901 tranny so the final drive is stock. And mostly I just use third gear.

Basically I've put this system together to deliver something very close to a 1.7L 914. I'm just trying to make a daily driver not a rocket like Otmar's.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Brando
post Aug 29 2004, 03:07 PM
Post #11


BUY MY SPARE KIDNEY!!!
****

Group: Members
Posts: 3,935
Joined: 29-August 04
From: Santa Ana, CA
Member No.: 2,648
Region Association: Southern California
is there any shifting with an electric motor car? I've always wondered... since when you let off the power, the engine stops spinning, wouldn't that make for grinding gears?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
sgomes
post Aug 29 2004, 03:12 PM
Post #12


Electric Member
***

Group: Members
Posts: 815
Joined: 6-May 04
From: Campbell, CA
Member No.: 2,029
When you let off the pedal the motor doesn't stop. In fact it will keep spinning for a VERY long time. You just aren't ADDING any energy. Since there is no compression like a gas engine it will just spin forever. Actually thats a difference in how you drive an electric car correctly. You get it up to speed and then take your foot off the pedal. It feels like you have cruise control. When the car slows a bit you just give it a little pedal and repeat. (IMG:style_emoticons/default/driving.gif)

Oh and on the subject of shifting.... You don't have to use the clutch at stop lights since you can't stall! (IMG:style_emoticons/default/cool_shades.gif) You don't HAVE to use the clutch to go again either (I do though.)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Aaron Cox
post Aug 29 2004, 03:14 PM
Post #13


Professional Lawn Dart
***************

Group: Retired Admin
Posts: 24,541
Joined: 1-February 03
From: Corona, CA
Member No.: 219
Region Association: Southern California
QUOTE(Brando @ Aug 29 2004, 02:07 PM)
is there any shifting with an electric motor car? I've always wondered... since when you let off the power, the engine stops spinning, wouldn't that make for grinding gears?

good point.

electric motors develop most of their power and torque at low rpm's right?
so i thought you just start in whatevr gear youd like....and vary the current for more or less speed
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Brando
post Aug 29 2004, 03:23 PM
Post #14


BUY MY SPARE KIDNEY!!!
****

Group: Members
Posts: 3,935
Joined: 29-August 04
From: Santa Ana, CA
Member No.: 2,648
Region Association: Southern California
how do you engine-brake?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Rhodes71/914
post Aug 29 2004, 03:35 PM
Post #15


Glacier
***

Group: Members
Posts: 1,374
Joined: 8-August 04
From: End of the Road, Alaska
Member No.: 2,482
That's very cool, an electric engine in a 914. My "alternative transportation brother would love it!
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
sgomes
post Aug 29 2004, 03:54 PM
Post #16


Electric Member
***

Group: Members
Posts: 815
Joined: 6-May 04
From: Campbell, CA
Member No.: 2,029
In MY setup I don't engine-brake at all. Yes that means the brakes get a work out. Hence my upgrading to 320i brakes on the front. Some people do put in regenerative braking to charge the batteries and that makes the car feel like it has tons of compression.

Sean:

send your brother this link: http://www.electroauto.com
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · 914World Garage · Next Newest »
 

Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 

Display Mode: Switch to: Standard · Linear+ · Switch to: Outline

Track this topic · Email this topic · Print this topic · Subscribe to this forum

- Lo-Fi Version Time is now: 9th May 2025 - 12:06 PM
Invision Power Board v9.1.4 © 2025  IPS, Inc.
All rights reserved 914World.com © since 2002
914World.com is the fastest growing online 914 community!
We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ...