Notices
993 Forum 1995-1998

The anatomy of a CF handbrake lever

Thread Tools
 
Search this Thread
 
Old 05-18-2018, 12:09 AM
  #1  
flyingchappy
Rennlist Member
Thread Starter
 
flyingchappy's Avatar
 
Join Date: Jun 2009
Location: Lehigh Valley
Posts: 851
Received 20 Likes on 13 Posts
Default The anatomy of a CF handbrake lever


I thought I’d share some internal details for the handbrake that might not ever be posted since these CF levers have become like bitcoin investments for some.
As luck would have it I was able to snag a nice piece at the Hershey swap meet this year. Probably not as legendary as the Cactus $10 UT smash-n-grab, but all the same pretty exciting to find something I’d been searching for a couple of years.
Within five minutes after arrival I stumbled upon a visibly sun baked 993 flamenco red interior laid out on the tarmac. The handbrake lever was amongst the mess.
Without much haggling, it was mine for $75. It had certainly seen better days before the PO rattle canned the leather in an attempt to make it black. The carbon fiber had small hairline cracks in the resin but the aluminum looked pretty clean. I figured I had my work cut out for me but I was determined to resurrect it.




First step was disassembly. The leather wasn’t going to be salvageable because it was torn and brittle. The handle is attached with contact cement and was surprisingly easy to remove with a few shots of Xenit.


My goal was to replicate the leather piece without the French seam. The removal was straight forward with a surgical scalpel cutting along the stitched seam at the bottom. I removed brittle leather and used it as a template. The replacement peice of leather came from the head rest portion of my original trashed seat cover. Glad I never tossed it!

Using my mad skills and grade school Tandy leather kit, I fashioned two replica patterns. One a hair larger than the other, just in case. The other one pictured is a vinyl sleeve I removed from another spare handbrake. That provided me with a correct template for the pivot holes.

I brought it to my local leather shop, Sabatini Coachworks, and he stitched it up for me inside out. After it was sewn, the leather needed to soaked a bit in water to allow it to be stretched over the rubber handle pad.
Notice the CF rubber sleeve was sanded down by hand at the factory to form a more rounded end to mate with the CF handle portion. Also, they used some small shims to wedge into the sides of the rubber on the CF end to widened it so it’s somewhat flush on reassembly with the handle.

The next step was to remove the aluminum piece from the CF. After close inspection it was only held on by black RTV, so a scalpel made the removal easy.








The repair of the CF requires some sanding and then a reapplication of a couple of layers of resin epoxy. I used Three Systems brand low viscosity to help seal and hide the surface fissures. In hindsight, I probably should have used something a bit more thick but it all worked out in the end. Its important to let the resin cure fully before sanding. I used two coats because dripping was inevitable with the long set time. Starting with 400 grit, I wet sanded through 800, 1200, 2400, 3600, 4000, 6000, 8000 and then 12000. The final step with Griots stage four fine machine polish.

Used quick setting two part epoxy to reassemble. Then coated the interior and lever handle with Pliobond, let dry and then apply a second adhesive layer before fitting.


Finished and satisfied with the result.









Old 05-18-2018, 01:38 AM
  #2  
BesideTheBox
Rennlist Member
 
BesideTheBox's Avatar
 
Join Date: Dec 2011
Posts: 761
Received 11 Likes on 10 Posts
Default

Nicely done!
Old 05-18-2018, 04:32 AM
  #3  
samurai_k
Rennlist Member
 
samurai_k's Avatar
 
Join Date: Aug 2014
Location: Norcal
Posts: 1,623
Received 180 Likes on 124 Posts
Default

Wow that is a great restoration!
Old 05-18-2018, 07:33 AM
  #4  
gavonder
Rennlist Member
 
gavonder's Avatar
 
Join Date: Mar 2014
Location: CT.
Posts: 1,254
Received 118 Likes on 98 Posts
Default

Holy crap!! Nicely done!
Old 05-18-2018, 07:41 AM
  #5  
AOW162435
Seared
Rennlist Member
 
AOW162435's Avatar
 
Join Date: Jul 2005
Location: Ellicott City, MD
Posts: 16,756
Received 407 Likes on 229 Posts
Default

Fantastic writeup & end result!




Andreas
Old 05-18-2018, 07:53 AM
  #6  
P-daddy
Rennlist Member
 
P-daddy's Avatar
 
Join Date: Nov 2010
Location: MD
Posts: 6,944
Received 446 Likes on 270 Posts
Default

Beautiful work! You saved a bundle over buying new if you can even find one.
Old 05-18-2018, 08:07 AM
  #7  
flyingchappy
Rennlist Member
Thread Starter
 
flyingchappy's Avatar
 
Join Date: Jun 2009
Location: Lehigh Valley
Posts: 851
Received 20 Likes on 13 Posts
Default

Thanks for the compliments guys. . Although I think I totally missed an opportunity here as I should've had a 3D printer make up a few copies of the CF and Al peices. Maybye someone could replicate the aluminum piece with a CNC machine with a plastic mule, possibly? Though
I’m not sure I’d go backwards again and disassemble it.
Old 05-18-2018, 09:24 AM
  #8  
YellowDieselGolf
Instructor
 
YellowDieselGolf's Avatar
 
Join Date: May 2016
Location: NSW, Australia
Posts: 247
Received 30 Likes on 17 Posts
Default

Good idea on the modelling flyingchappie. I've got a LHD handbrake in my RHD car, so the PORSCHE engraving is oriented towards the passenger. A new CNC piece would be nice so that it was sitting the right way.

Great work too - you just inspired me to do a quick write up for the restore of the CF gear ****.
Old 05-18-2018, 09:41 AM
  #9  
nine9six
Banned
 
nine9six's Avatar
 
Join Date: Oct 2011
Location: Oregon
Posts: 5,465
Likes: 0
Received 25 Likes on 23 Posts
Default

Very nicely done! It's great to see an e-brake handle disassembled!
Old 05-18-2018, 10:28 AM
  #10  
Cactus
Noodle Jr.
Rennlist Member
 
Cactus's Avatar
 
Join Date: Jan 2006
Location: Mountville, PA
Posts: 9,881
Received 207 Likes on 133 Posts
Default

Impressive!
Old 05-18-2018, 11:26 AM
  #11  
Manual991
Racer
 
Manual991's Avatar
 
Join Date: Nov 2016
Location: Mill Creek, WA
Posts: 362
Likes: 0
Received 135 Likes on 66 Posts
Default

Nice job! I wondered what those pieces looked like. I had the same thought on the 3D model. I wish someone would do that. I have the shift **** but can’t find a handbrake.
Old 05-18-2018, 12:12 PM
  #12  
Nurburger
Rennlist Member
 
Nurburger's Avatar
 
Join Date: Oct 2007
Location: Racking up air miles....
Posts: 3,663
Likes: 0
Received 557 Likes on 246 Posts
Default

Nice snag!
Old 05-18-2018, 12:31 PM
  #13  
ShdwFx
Rennlist Member
 
ShdwFx's Avatar
 
Join Date: Jun 2004
Location: Portland, OR
Posts: 888
Received 218 Likes on 158 Posts
Default

Very nice work and great documentation!
Old 05-18-2018, 01:39 PM
  #14  
simpsoap
Three Wheelin'
 
simpsoap's Avatar
 
Join Date: May 2008
Location: Ohio
Posts: 1,257
Received 13 Likes on 13 Posts
Default

WOW, what a great before and after. That looks fantastic!

-Andy
Old 05-18-2018, 03:33 PM
  #15  
SpeedyC2
Rennlist Member
 
SpeedyC2's Avatar
 
Join Date: Jan 2012
Location: NC
Posts: 1,451
Received 206 Likes on 108 Posts
Default

Very, very nice work - well done!


Quick Reply: The anatomy of a CF handbrake lever



All times are GMT -3. The time now is 06:54 AM.