 CAD Guys (or Gals), ... Inner Adjuster Gear |
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| Eric_Shea |
 Apr 9 2005, 02:55 PM
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#1
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PMB Performance  Group: Admin Posts: 19,278 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains   |
914 rear brake caliper inner adjuster gears are NLA. Anyone care to CAD one up? It would help me get machining quotes.
There's 13 teeth, they're about 9mm to the tops of the teeth and about 11mm long with a 4mm hex adjustment in the end. Other than that, I really don't know any of those fancy engineer measurements. Any takers to help preserve the 914? (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) |
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| BatFromHell |
Apr 10 2005, 11:21 PM
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Newbie Group: Members Posts: 25 Joined: 7-April 05 From: Ontario,Canada Member No.: 3,890 |
Eric:
This piece has been made by a process called "broaching". Basically, a piece of roundbar is taken a hex head is machined at one end and then a broach which has the same pitch as the adjuster but just a negative of it in a complete circle. (Similar to a thread die. This broach is pressed down onto the round bar until the spline is formed and then it is pulled back off. Therefore, there may exist a standard broach to create this adjuster. Try to check with a machine shop that specializes in metric threads and splines. My suspicions tell me that this may be a standard Porsche spline. I have been doing some research on Porsche production splines particularly the half shafts on the 911 and 914. Most of these splines are NOT standard metric splines used today but "special" Porsche splines which are very close to metric splines fabricated today. The only other suggestion I have is to give this adjuster to a machine shop that specializes in metric fabrication and have them CMM (Co-ordinate Measuring Machine) the part and they can reproduce an exact part on a CNC machine. Since it is a very small part the CMM process shouldn't cost that much. Good Luck |
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Posts in this topic
Eric_Shea CAD Guys (or Gals) Apr 9 2005, 02:55 PM
BatFromHell Can you post a pic of it?
Then I can tell you what... Apr 9 2005, 03:15 PM i love porsche i could attempt it 3-d in pro Engineer, if you can... Apr 9 2005, 08:52 PM type11969 If you get all the dimensions for me, I'm almo... Apr 10 2005, 08:00 AM Eric_Shea Here's a shot... Apr 10 2005, 09:21 AM Eric_Shea I could send one of these to whoever thinks they c... Apr 10 2005, 09:23 AM Mueller I think you are better off sending out the gear(s)... Apr 10 2005, 01:03 PM
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