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 )

4 Pages V < 1 2 3 4 >  
 Reply to this topicStart new topic
> 917 balsa shift knob specs (now a progress thread), MK1 made, pics included
VaccaRabite
post Jan 16 2009, 08:19 PM
Post #21


En Garde!
**********

Group: Admin
Posts: 13,465
Joined: 15-December 03
From: Dallastown, PA
Member No.: 1,435
Region Association: MidAtlantic Region
Okay, we have some people saying that they are balsa/mahogany and some saying that they are maple/mahogany.

Can anyone point me to a source that says definativly what they ware made of?

I can't see how balsa would deform when laminated with mahogany.

Zach
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
scotty b
post Jan 16 2009, 08:21 PM
Post #22


rust free you say ?
***************

Group: Members
Posts: 16,375
Joined: 7-January 05
From: richmond, Va.
Member No.: 3,419
Region Association: None
Purple heart and Cocobolo (IMG:style_emoticons/default/stirthepot.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
sixnotfour
post Jan 16 2009, 09:17 PM
Post #23


914 Wizard
**********

Group: Members
Posts: 10,437
Joined: 12-September 04
From: Life Elevated..planet UT.
Member No.: 2,744
Region Association: Rocky Mountains
QUOTE
76911S

Registered User


Join Date: Jul 2004
Location: Columbus, Ohio
Posts: 201 Hi all, I do still make them but they are sold exclusively here http://www.tremotorsports.com/product.cfm?Node=10299

Epoxy coating them would be fine but that was not the way the original ones where finished and the oils from our hands create a great patina after awhile. All the original 917, 907's & 908's used these and the ones I have seen all have a nice worn used look.

You can't really say the originals where made with Birch or Balsa because the restoration gurus don't even know for sure what woods where used. I have sold knobs to both Carl Thompson & Dale Miller for use in restoration projects so these seem to be as close as anyone has found to original. All though, original is not always the best...

Mark..


From messing with model airplanes as a kid, balsa wood is so soft it would probably split apart while machining and that would be really frustrating learnig curve.
User is online!Profile CardPM
Go to the top of the page
+Quote Post
Jeff Hail
post Jan 17 2009, 02:40 AM
Post #24


Senior Member
***

Group: Members
Posts: 1,141
Joined: 3-May 07
From: LA/ CA
Member No.: 7,712
The 917 Shift Knob is actually made from turned Birch Plywood. How do I know his. Hans Metzger told me. Balsa would absorb moisture like a sponge and crack as it is very porous. The shift knob was never intended to be light weight. The purpose of the wood was because the linkage transmitted so much heat from the transmission into the drivers hand that wood was used as an insulator.


Attached image(s)
Attached Image Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
dbu356
post Jan 17 2009, 09:55 AM
Post #25


Member
**

Group: Members
Posts: 120
Joined: 2-May 04
From: Scottsdale, AZ
Member No.: 2,013

I got 2 of them from Mark Cross when he was making them several years back...He may still be making them, I don't know.

I'll take pictures and measurements of mine later today if you would like.

The link to the 911S registry story is:


http://www.early911sregistry.org/forum/sho...ight=shift+knob

His email was (is?)
macross860@columbus.rr.com

David
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
sixnotfour
post Jan 17 2009, 10:57 AM
Post #26


914 Wizard
**********

Group: Members
Posts: 10,437
Joined: 12-September 04
From: Life Elevated..planet UT.
Member No.: 2,744
Region Association: Rocky Mountains
QUOTE
I got 2 of them from Mark Cross when he was making them several years back...He may still be making them, I don't know.


same person as my post, he sells exclusively to TRE, wich is in the post also.
User is online!Profile CardPM
Go to the top of the page
+Quote Post
jasons
post Jan 17 2009, 11:15 AM
Post #27


Jackstand Extraordinaire
****

Group: Members
Posts: 2,002
Joined: 19-August 04
From: Scottsdale, AZ
Member No.: 2,573
Region Association: None
QUOTE(sixnotfour @ Jan 17 2009, 09:57 AM) *

QUOTE
I got 2 of them from Mark Cross when he was making them several years back...He may still be making them, I don't know.


same person as my post, he sells exclusively to TRE, wich is in the post also.


I got one of Mark Cross' knobs back when he sold them for like $35. Here is a pic.

Attached Image

They weren't balsa.
Here is his post from when he was selling them. It might say what he made them out of. I didn't review it.

http://www.914world.com/bbs2/index.php?sho...&pid=248306
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
PeeGreen 914
post Jan 17 2009, 11:24 AM
Post #28


Just when you think you're done...wait, there is more..lol
**********

Group: Members
Posts: 10,219
Joined: 21-September 06
From: Seattle, WA... actually Everett
Member No.: 6,884
Region Association: Pacific Northwest
How did you get it on he Rennshift? That looks great.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
jasons
post Jan 17 2009, 11:33 AM
Post #29


Jackstand Extraordinaire
****

Group: Members
Posts: 2,002
Joined: 19-August 04
From: Scottsdale, AZ
Member No.: 2,573
Region Association: None
QUOTE(Phoenix 914-6GT @ Jan 17 2009, 10:24 AM) *

How did you get it on he Rennshift? That looks great.


You know, I was able to find a factory Porsche crush sleeve. I tried to use it, but it took more pressure than I was comfortable putting on that wood shift knob. If I would have split that knob putting it on the shifter, I would hate myself. So, I cheated and I just used duct tape to act as a bushing between the shifter and the knob. Wrapped the shifter with the duct tape, pressed the knob on. Its a dirty secret but it worked.

Consider that a "Duct tape confession".
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
PeeGreen 914
post Jan 17 2009, 11:43 AM
Post #30


Just when you think you're done...wait, there is more..lol
**********

Group: Members
Posts: 10,219
Joined: 21-September 06
From: Seattle, WA... actually Everett
Member No.: 6,884
Region Association: Pacific Northwest
(IMG:style_emoticons/default/aktion035.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
VaccaRabite
post Jan 17 2009, 12:39 PM
Post #31


En Garde!
**********

Group: Admin
Posts: 13,465
Joined: 15-December 03
From: Dallastown, PA
Member No.: 1,435
Region Association: MidAtlantic Region
On the TRE site they say to glue the knob on to the shifter arm.

Zach
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mark Henry
post Jan 17 2009, 01:00 PM
Post #32


that's what I do!
***************

Group: Members
Posts: 20,065
Joined: 27-December 02
From: Port Hope, Ontario
Member No.: 26
Region Association: Canada
Although I saw this thread I never looked at it, to me who would want a knob made of balsa. Too soft and would look like crap in no time.
Also it has to be to hardwoods, as a softwood and a hardwood would be hard to machine and almost imposable to sand. The softwood will sand more than the hardwood making it rippled.

Birch ply could be correct as the Germans loved to use Baltic birch ply.


QUOTE
Purple heart and Cocobolo


Now that peeks my interest...and I have a huge board of purple heart.

How about purple heart and black walnut or cherry (IMG:style_emoticons/default/idea.gif)
Maybe purple heart and white ash (IMG:style_emoticons/default/idea.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
scotty b
post Jan 17 2009, 01:09 PM
Post #33


rust free you say ?
***************

Group: Members
Posts: 16,375
Joined: 7-January 05
From: richmond, Va.
Member No.: 3,419
Region Association: None

Maybe purple heart and white ash (IMG:style_emoticons/default/idea.gif)
[/quote]


OOOOoooohhhhhhhh (IMG:style_emoticons/default/wub.gif) I'll take one please (IMG:style_emoticons/default/smile.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mark Henry
post Jan 17 2009, 02:35 PM
Post #34


that's what I do!
***************

Group: Members
Posts: 20,065
Joined: 27-December 02
From: Port Hope, Ontario
Member No.: 26
Region Association: Canada
I thought the big board was purple heart, but now that I've looked it's more likely Pernambuco and I do have some pieces of amazon rosewood

A good "type of exotic wood" site is this one:
http://www.hobbithouseinc.com/personal/woodpics/
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
VaccaRabite
post Jan 17 2009, 03:17 PM
Post #35


En Garde!
**********

Group: Admin
Posts: 13,465
Joined: 15-December 03
From: Dallastown, PA
Member No.: 1,435
Region Association: MidAtlantic Region
Well, I bought enough mahogany and maple to make 3 or 4 knobs.

I could not find birch plywood - but I did not look too hard.

So, I guess the idea of the "balsa" shift knob is just a well accepted myth?

Zach
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
dflesburg
post Jan 17 2009, 03:32 PM
Post #36


Senior Member
***

Group: Members
Posts: 1,720
Joined: 6-April 04
From: Warm and Cheerful Centerville Ohio
Member No.: 1,896
Region Association: None
Good grief, pay the $75 and be done.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
VaccaRabite
post Jan 17 2009, 04:11 PM
Post #37


En Garde!
**********

Group: Admin
Posts: 13,465
Joined: 15-December 03
From: Dallastown, PA
Member No.: 1,435
Region Association: MidAtlantic Region
QUOTE(dflesburg @ Jan 17 2009, 04:32 PM) *

Good grief, pay the $75 and be done.

If I did that, how would I learn to use a lathe? If I wanted to just be done with it, I'd use the cool aluminum one I have on hand.

Zach
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
VaccaRabite
post Jan 24 2009, 05:49 PM
Post #38


En Garde!
**********

Group: Admin
Posts: 13,465
Joined: 15-December 03
From: Dallastown, PA
Member No.: 1,435
Region Association: MidAtlantic Region
Mahogany and maple glue up.

in trimmed specs are about 47mm tall x 50mm wide.

Starting with 5 of them. I have enough mahogany for 1 more knob, and enough maple for 2 or three. But I am out of clamps and got tired of cutting disks. So, starting with 5.

Pics!
(IMG:http://farm4.static.flickr.com/3470/3223139205_d5838a0db9.jpg)

(IMG:http://farm4.static.flickr.com/3495/3223996290_e19d48ea50.jpg)

I'm at the in-laws this weekend due to the house flood, so I only brough hand tools with me. Was really relaxing to slow down and just use a coping saw for a while. I'll leave them in the clamps over night and start turning next week some time.

Zach
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Dr Evil
post Jan 24 2009, 06:14 PM
Post #39


Send me your transmission!
***************

Group: Members
Posts: 23,002
Joined: 21-November 03
From: Loveland, OH 45140
Member No.: 1,372
Region Association: MidAtlantic Region
Finish your dang car already (IMG:style_emoticons/default/rolleyes.gif)

It bugs me when people tell you to take the easy way out, kind of misses the whole damn point.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
VaccaRabite
post Jan 24 2009, 06:29 PM
Post #40


En Garde!
**********

Group: Admin
Posts: 13,465
Joined: 15-December 03
From: Dallastown, PA
Member No.: 1,435
Region Association: MidAtlantic Region
QUOTE(Dr Evil @ Jan 24 2009, 07:14 PM) *

Finish your dang car already (IMG:style_emoticons/default/rolleyes.gif)

Next weekend.

I may be able to sell a few of these at Hershey to recover some of the money spent on the house this and next week. Sides, while I'm at the inlaws, not a lot of car work I can be doing.

Zach
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · 914World Garage · Next Newest »
 

4 Pages V < 1 2 3 4 >
Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 

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

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

- Lo-Fi Version Time is now: 15th June 2024 - 05:58 PM
Invision Power Board v9.1.4 © 2024  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 ...