My Lightweight Project Update, Details, Details, Details.....w/ pics |
|
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. |
|
My Lightweight Project Update, Details, Details, Details.....w/ pics |
URY914 |
Mar 26 2005, 09:48 AM
Post
#1
|
I built the lightest 914 in the history of mankind. Group: Members Posts: 120,510 Joined: 3-February 03 From: Jacksonville, FL Member No.: 222 Region Association: None |
When I last left you I had just weighed it and it was just completed enough to get it running, I've now been spending some time getting things sorted out and the little stuff completed. Have a look...
This is the seat belt shoulder bar. The belts wrap around the bar. No tabs to be welded on, no nuts, washers and bolts=lighter. (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif) (I weighed the car with the belts and some other misc. pieces in the car so the weigh will stay the same as I install this stuff.) Attached thumbnail(s) |
URY914 |
Mar 26 2005, 09:53 AM
Post
#2
|
I built the lightest 914 in the history of mankind. Group: Members Posts: 120,510 Joined: 3-February 03 From: Jacksonville, FL Member No.: 222 Region Association: None |
Here you can see the gusset plate with the hole in it welded in the corner.
Attached thumbnail(s) |
URY914 |
Mar 26 2005, 09:54 AM
Post
#3
|
I built the lightest 914 in the history of mankind. Group: Members Posts: 120,510 Joined: 3-February 03 From: Jacksonville, FL Member No.: 222 Region Association: None |
Here is the brake line T connection. I don't see a reason to attach it to anything. Let it float.
Attached thumbnail(s) |
URY914 |
Mar 26 2005, 09:59 AM
Post
#4
|
I built the lightest 914 in the history of mankind. Group: Members Posts: 120,510 Joined: 3-February 03 From: Jacksonville, FL Member No.: 222 Region Association: None |
This is the oil beather tank. I found if I mounted it on the tanny I could save welding a tab on the frame. And I won't have to disconnect it to drop the engine. You know, when I change engines between autox runs. (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif)
I also removed the hose clamps from the breather hose connections. There is no pressure on these hoses so they won't be blowing off. I left one on the tank fitting but took them off of the T connections. You can see one at the top of the pic. Saved 1/4 pound. (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) Attached thumbnail(s) |
URY914 |
Mar 26 2005, 10:03 AM
Post
#5
|
I built the lightest 914 in the history of mankind. Group: Members Posts: 120,510 Joined: 3-February 03 From: Jacksonville, FL Member No.: 222 Region Association: None |
I can reach everything but the exhaust stud nuts from thr top. (IMG:http://www.914world.com/bbs2/html/emoticons/happy11.gif)
Here you you can see the breater hose layout. I gotta get one of those lightwt gear reduction starters. I also need to raise the rear top shock mounts. Right now I can't lower the springs without bottoming out the shocks. Attached thumbnail(s) |
Jeroen |
Mar 26 2005, 10:05 AM
Post
#6
|
914 Guru Group: Members Posts: 7,887 Joined: 24-December 02 From: The Netherlands Member No.: 3 Region Association: Europe |
take off the starter
you can always push-start it (IMG:http://www.914world.com/bbs2/html/emoticons/happy11.gif) |
URY914 |
Mar 26 2005, 10:08 AM
Post
#7
|
I built the lightest 914 in the history of mankind. Group: Members Posts: 120,510 Joined: 3-February 03 From: Jacksonville, FL Member No.: 222 Region Association: None |
I moved the starter button and the on/button to the dash. They were on a seperate little panel. The big holes are where I had the other gauges. Who has time to look at oil pressure??? (IMG:http://www.914world.com/bbs2/html/emoticons/ohmy.gif)
Attached thumbnail(s) |
URY914 |
Mar 26 2005, 10:10 AM
Post
#8
|
I built the lightest 914 in the history of mankind. Group: Members Posts: 120,510 Joined: 3-February 03 From: Jacksonville, FL Member No.: 222 Region Association: None |
A general shot of the engine for those that think you need all the sheetmetal on the engine. (you do on a street car)
The fuel pressure regulator is now mounted on the top of the fan housing. One less thing to disconnect when pulling the engine. Some have said I sould make a fiberglass fan housing. Well it would be a lot of work and the stock one is pretty light now that I've cut off all the little tabs and ribs and stuff. Attached thumbnail(s) |
URY914 |
Mar 26 2005, 10:17 AM
Post
#9
|
I built the lightest 914 in the history of mankind. Group: Members Posts: 120,510 Joined: 3-February 03 From: Jacksonville, FL Member No.: 222 Region Association: None |
Those bolts on the seat back brace are waaaaaay too long. I'll cut those off today.
That's all for now....Happy Easter Paul Attached thumbnail(s) |
lapuwali |
Mar 26 2005, 10:52 AM
Post
#10
|
||
Not another one! Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743 |
If there are any structural engineers here I'd like them to chime in, but every book I have on structural engineering and chassis design has your gusset as the "bad" picture. The "good" picture is to put a larger pair of gussets along the sides, welded to the center of the tube. A gusset as you've pictured it actually raises the stress (concentrated at the ends), rather than lower it. |
||
URY914 |
Mar 26 2005, 11:04 AM
Post
#11
|
I built the lightest 914 in the history of mankind. Group: Members Posts: 120,510 Joined: 3-February 03 From: Jacksonville, FL Member No.: 222 Region Association: None |
Don't you think that the stress is being lowered on the connection of the tubes? That is the goal. Reduce the stress at the tubing connection.
The gusset I have on the opposite top side would be the best gusset type, I agree. |
URY914 |
Mar 26 2005, 11:11 AM
Post
#12
|
I built the lightest 914 in the history of mankind. Group: Members Posts: 120,510 Joined: 3-February 03 From: Jacksonville, FL Member No.: 222 Region Association: None |
These are the three types I had to choose from.
Strongest, middle, weakest. Attached thumbnail(s) |
Brett W |
Mar 26 2005, 03:58 PM
Post
#13
|
Advanced Member Group: Members Posts: 2,856 Joined: 17-September 03 From: huntsville, al Member No.: 1,169 Region Association: None |
Paul,
I have to upgrade my rear shocks. The ones I have are too long for my new setup. They are Carrera light weight small tube threaded aluminum shocks. They don't weigh anything. The shocks are a 7 in stroke, 14 in compressed, 21 extended. I have a set of 180 lb springs also. They use the 1 7/8 springs that are 10 inches long. I am sure if you cut the springs you could A) up the rate, (IMG:http://www.914world.com/bbs2/html/emoticons/cool.gif) lose some more weight. One end is a rod end and the other is a stud, but you can adapt it to a rod end as well and then you could run it upside down so you could lose some unsprung wieght. |
URY914 |
Mar 26 2005, 04:03 PM
Post
#14
|
I built the lightest 914 in the history of mankind. Group: Members Posts: 120,510 Joined: 3-February 03 From: Jacksonville, FL Member No.: 222 Region Association: None |
Brett,
got a picture of 'em? |
mattillac |
Mar 26 2005, 06:07 PM
Post
#15
|
robots! Group: Members Posts: 536 Joined: 27-October 04 From: vallejo,ca Member No.: 3,020 |
cool stuff! you should have used carbon fiber tubes instead (IMG:http://www.914world.com/bbs2/html/emoticons/laugh.gif) . you dont really need a passenger side floor panel, do you? thats at least a pound or two. (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif)
|
lapuwali |
Mar 26 2005, 06:34 PM
Post
#16
|
Not another one! Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743 |
Again, I'm just parroting what's in my books. I have no practical experience with gusseting.
What appears to be the problem is that by putting the gusset on the "inside edge" is you're maximizing the stress on the gusset itself, and placing stress risers in the tubes at the ends of the gusset. I don't have a scanner, and the batteries in my camera are shot, or I'd send along some of the diagrams I have here. |
brant |
Mar 26 2005, 06:37 PM
Post
#17
|
914 Wizard Group: Members Posts: 11,623 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
Bret, Paul,
I think you mean these: Attached thumbnail(s) |
brant |
Mar 26 2005, 06:38 PM
Post
#18
|
914 Wizard Group: Members Posts: 11,623 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
loosing unsprung weight:
Attached thumbnail(s) |
Qarl |
Mar 26 2005, 07:31 PM
Post
#19
|
Shriveled member Group: Benefactors Posts: 5,233 Joined: 8-February 03 From: Florida Member No.: 271 Region Association: None |
|
Qarl |
Mar 26 2005, 07:33 PM
Post
#20
|
Shriveled member Group: Benefactors Posts: 5,233 Joined: 8-February 03 From: Florida Member No.: 271 Region Association: None |
...
Attached thumbnail(s) |
Lo-Fi Version | Time is now: 10th May 2024 - 11:49 PM |
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 ... |