Go Back  RX7Club.com - Mazda RX7 Forum > Tech and Performance > Race Car Tech
Reload this Page >

Polycarbonate on Carbon Fiber Sealant Question

Race Car Tech Discuss anything related to road racing and auto X.

Polycarbonate on Carbon Fiber Sealant Question

Old 05-12-15, 06:52 AM
  #1  
.
Thread Starter
iTrader: (8)
 
Join Date: May 2003
Location: US
Posts: 2,496
Likes: 0
Liked 2 Times in 2 Posts
Polycarbonate on Carbon Fiber Sealant Question

I am trying to figure out the best sealant for a Lexan polycarbonate window on a carbon fiber hatch.

I am leaning towards 3Ms Window Weld Super Fast Urethane (PN#08609), and mechanically fastening it down with bolts, lock washers, and nylon nuts. I just want to ensure the sealant will be holding strong between the polycarbonate and carbon fiber, and not just the nuts and bolts.

I called 3M and this question stumped them. I believe they are putting their best scientists on the case, but I know I've seen this combination on a few RX-7s before.

Any help would be greatly appreciated


Cheers!
ZumSpeedRX-7 is offline  
Old 05-12-15, 07:29 AM
  #2  
.
Thread Starter
iTrader: (8)
 
Join Date: May 2003
Location: US
Posts: 2,496
Likes: 0
Liked 2 Times in 2 Posts
I found a few members used black RTV and butyl caulking as sealants

Any feedback with long term use with these options?
ZumSpeedRX-7 is offline  
Old 05-12-15, 07:48 AM
  #3  
Senior Member
iTrader: (2)
 
DaveEstey's Avatar
 
Join Date: Jun 2012
Location: MA
Posts: 339
Likes: 0
Liked 0 Times in 0 Posts
I think window weld will be ample - that stuff is serious.
DaveEstey is offline  
Old 05-12-15, 02:57 PM
  #4  
.
Thread Starter
iTrader: (8)
 
Join Date: May 2003
Location: US
Posts: 2,496
Likes: 0
Liked 2 Times in 2 Posts
Originally Posted by DaveEstey View Post
I think window weld will be ample - that stuff is serious.
Thanks Dave - I'll give the window weld and hardware a shot and report back

I'm really hoping the seal holds strong; FALs rear polycarbonate windows are now obsolete due to a damaged mold, so a replacement will be hard to come by


Here's what I'm working with. The manufacturer put 8 mount guides on the hatch template, so the hardware install should be pretty straight forward


Good luck with your hill climb FC - maybe I'll see you at a local event

Last edited by ZumSpeedRX-7; 05-12-15 at 03:02 PM.
ZumSpeedRX-7 is offline  
Old 05-30-15, 10:25 AM
  #5  
.
Thread Starter
iTrader: (8)
 
Join Date: May 2003
Location: US
Posts: 2,496
Likes: 0
Liked 2 Times in 2 Posts
I went with 3M Window-Weld (#08609) with 10 1" 10/32 head allen screws with nylon lock nuts







ZumSpeedRX-7 is offline  
Old 05-30-15, 02:18 PM
  #6  
Senior Member
iTrader: (2)
 
DaveEstey's Avatar
 
Join Date: Jun 2012
Location: MA
Posts: 339
Likes: 0
Liked 0 Times in 0 Posts
nice clean install job
DaveEstey is offline  
Old 05-30-15, 06:50 PM
  #7  
.
Thread Starter
iTrader: (8)
 
Join Date: May 2003
Location: US
Posts: 2,496
Likes: 0
Liked 2 Times in 2 Posts
Thanks for the compliment and for your help Dave
ZumSpeedRX-7 is offline  
Old 05-31-15, 02:14 PM
  #8  
Do a barrel roll!
15 Year Member
iTrader: (4)
 
Rxmfn7's Avatar
 
Join Date: Oct 2001
Location: Lower Burrell, PA
Posts: 7,529
Likes: 0
Liked 1 Time in 1 Post
I will be doing this myself shortly as Ive had the hatch and window laying around for a while now, just want to get the hatch painted first. Did you reattach interior plastics to the inside of the hatch?
Rxmfn7 is offline  
Old 05-31-15, 09:52 PM
  #9  
.
Thread Starter
iTrader: (8)
 
Join Date: May 2003
Location: US
Posts: 2,496
Likes: 0
Liked 2 Times in 2 Posts
No, I didn't reattach the factory plastics - only the two hinge brackets up top and the latch hook at the back
ZumSpeedRX-7 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Jeff20B
1st Generation Specific (1979-1985)
73
09-16-18 07:16 PM
_Tones_
Adaptronic Engine Mgmt - AUS
9
09-11-15 12:28 AM
Nosferatu
2nd Generation Specific (1986-1992)
7
09-05-15 02:13 PM


Thread Tools
Search this Thread
Quick Reply: Polycarbonate on Carbon Fiber Sealant Question


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: