ADVrider

Go Back   ADVrider > Gear > The Garage
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 02-18-2013, 08:35 AM   #16
F6BANGER
Adventurer
 
Joined: Feb 2013
Location: Alb NM
Oddometer: 25
On cracked abs plastic, I just use ABS cement. Works great.

F6BANGER is offline   Reply With Quote
Old 02-26-2013, 09:57 AM   #17
flossandfly OP
Gnarly Adventurer
 
flossandfly's Avatar
 
Joined: Dec 2011
Location: Calgary Alberta Canada
Oddometer: 281
I wondered about abs cement. Good to know.


Finally got to ride with the repaired windscreen using acrylic cement. Rode into a wind strong enough that my XR650L was wide open and doing around 95 km/hr. So far it has held up fine although the screen i tried out was only cracked and no pieces broke off. I will try the one that had a piece break off some other time to test the strenght of the repair.
flossandfly is offline   Reply With Quote
Old 02-28-2013, 02:36 AM   #18
Twilight Error
Going nowhere slowly
 
Twilight Error's Avatar
 
Joined: May 2002
Location: The Submarine Mines
Oddometer: 22,370
Quote:
Originally Posted by Ricardo Kuhn View Post




Link plates from a bicycle chain? Nice.
Twilight Error is offline   Reply With Quote
Old 12-08-2013, 05:03 PM   #19
bwalsh
Beastly Adventurer
 
bwalsh's Avatar
 
Joined: Jan 2009
Location: Hell town
Oddometer: 10,529
About a month ago another inmate gave me a half windscreen to fix off his 4x4 Rhino(I think that's the make). It was broken on both ends...





I ordered some, SCIGRIP weld on 4 Acrylic and Polycarbonate adhesive...



www.multicraftplastics.com/manufacturers/scigrip/images/scigrip_weldon_4.jpg

applicator...



http://www.eplastics.com/core/media/...7e767e2d030d9c

and some 1/4" Polycarbonate rod(s). The smallest diameter I could find.



http://www.eplastics.com/Plastic/Lex...ycarbonate-Rod

I studied the damage for awhile to determine the best approach. I decided to weld the cracks since the adhesive wouldn't get into the cracks. I started on the small crack in the broken off piece in the first pic. As you can see in the first pic above, I had already welded one side when I took the pic. I welded both sides then took a dremel and sanded it flush with the windscreen.

Now the best way to weld plastic or polycarbonate is to create a "V" groove along the crack/break on both sides(not at the same time though) so new material can be introduced into the depth of the crack(so there is no crack left to flex). I used a cheap 30w soldering iron to make the groove as I didn't want to risk cracking the windscreen worse than it was using a dremel. It was SSLLOOWW going. It made about a 1/8"w x 1/8'd groove.





I made sure to melt the second "V" down into the new material to eliminate all traces of the crack.
Welding a 1/4" rod in to a 1/8" groove proved to be, uh...interesting! The trick, especially with a 1/4" rod, is to twist/spin the rod so the entire rod gets heated enough. All the while heating(and not meting thru) the windscreen to the point of melting so some of the windscreen material mixes with the rod material. All while moving down the crack and trying to spread out the material so most of it isn't wasted(solidify above the crack). Yes it was a PITA!

Here's a photo of the first weld before grinding/sanding. Notice the excess material that's going to get ground off...



and after grinding/sanding...



Then flip sides and repeat. I had to go back and fill in low spots then re-sand all the welds.



Then I moved on to the broken off piece in the pic above. Since the break was clean I decided to use the adhesive. Worked like a charm!
I tried the adhesive on one of the longer breaks(twice) and no go. Most of the crack was clean but where it turned was a little rough. I figured it wouldn't work but nothing ventured nothing gained!

OK, I'll have to weld the rest of the cracks.

The finished product...



the "white" area to the right of the crack, under my hand is distortion from having heat in one place too long. Much longer and the plastic will start to bubble and melt(not good).
Other than that, its kind of ugly but back in one piece! I told him to put the stress test to it. I hope it holds up well!

I have an older Aeroflow windscreen that has a few cracks in it. I have an idea for keeping the rod/repair semi transparent, if I can cut these rods in half's? Thirds? Quarters?

I will post that repair when I get around to doing the work.
__________________
2004 XR650L / 2001 R1150GS
NWVA TAG NWVA TAG MAP RTE THREAD & IN LIST




bwalsh screwed with this post 12-08-2013 at 06:00 PM
bwalsh is offline   Reply With Quote
Old 12-08-2013, 05:30 PM   #20
strongbad
Gnarly Adventurer
 
Joined: Jun 2006
Location: Idaho Falls, ID
Oddometer: 475
Very nice. Thanks for the pics. I suppose one could cut some unneeded plastic from some other part of the windscreen to use as weld rod. That would ensure that the right kind of plastic is used.
strongbad is offline   Reply With Quote
Old 12-08-2013, 05:55 PM   #21
bwalsh
Beastly Adventurer
 
bwalsh's Avatar
 
Joined: Jan 2009
Location: Hell town
Oddometer: 10,529
Quote:
Originally Posted by strongbad View Post
Very nice. Thanks for the pics. I suppose one could cut some unneeded plastic from some other part of the windscreen to use as weld rod. That would ensure that the right kind of plastic is used.
Yes, its always best to use material from what you're working on though it isn't always possible.
__________________
2004 XR650L / 2001 R1150GS
NWVA TAG NWVA TAG MAP RTE THREAD & IN LIST



bwalsh is offline   Reply With Quote
Reply

Share

Thread Tools Search this Thread
Search this Thread:

.
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


Times are GMT -7.   It's 06:34 AM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014