You might remember this picture...
Don't do this.......
It lasted 3 months.....the lens fractured and leaked worse than the original.
It seems that brake fluid deteriorated the structure of the Plexiglas and fractured it.
It didn't melt or dissolve it,the Plexiglas just crystallized and fell apart like broken safety glass.
I've sense cut a new site glass from a old clear helmet visor and glued it in.
I'm hoping the different material will hold.....I wonder if it's Lexan....I cut it out with tin snips.
I replaced my leaking original site glass with a 1/8" piece of Plexiglas.....Site glass again..
- virgilmobile
- Posts: 9102
- Joined: Sun Sep 19, 2010 5:39 pm
- Location: Denham Springs,La.
- Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I
- WingAdmin
- Site Admin
- Posts: 23316
- Joined: Fri Oct 03, 2008 4:16 pm
- Location: Strongsville, OH
- Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (sold)
1998 XV250 Virago (sold)
2012 Suzuki Burgman 400 (wife's!)
2007 Aspen Sentry Trailer - Contact:
Re: Site glass again..
Why not try a piece of glass? Scribe a piece of safety glass to size, you can be pretty sure brake fluid won't bother that.
- virgilmobile
- Posts: 9102
- Joined: Sun Sep 19, 2010 5:39 pm
- Location: Denham Springs,La.
- Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I
Re: Site glass again..
That would be fun to try.
I even briefly thought about a marble.
maybe I'll look into Walmart craft center.
My wife is always bringing home some sparkle glass beads and stuff.
It wouldn't be the first time I used something of hers to fix my stuff.
I even briefly thought about a marble.

My wife is always bringing home some sparkle glass beads and stuff.
It wouldn't be the first time I used something of hers to fix my stuff.

- Sidcar
- Posts: 777
- Joined: Thu Jul 05, 2012 3:07 pm
- Location: Birmingham, England, United Kingdom
- Motorcycle: 1995 GL1500 SE (20th Anniversary) and Squire RX4 sidecar
Re: Site glass again..
Would using synthetic brake fluid help. I use it because if it leaks out it doesn't attack the paintwork.
Sid
Sid
- kwild
- Posts: 112
- Joined: Wed Oct 10, 2012 10:44 am
- Location: Anaheim Calif.
- Motorcycle: 84 Standard
85 Aspencade
Re: Site glass again..
A dime works nicely, of course the obvious...you can't see through it. 

84 Standard
85 Aspencade
If God didn't want us to eat animals, why did he make them out of meat?
85 Aspencade
If God didn't want us to eat animals, why did he make them out of meat?
- thrasherg
- Posts: 2123
- Joined: Tue Oct 20, 2009 11:21 am
- Location: Plano, TX
- Motorcycle: 2017 Yamaha FZ07, 2015 Yamaha Super Tenere ES, 2005 Honda Shadow 750, CRF450X, CRF230, CRF250X, XR200, CR500, Gas Gas TXT200
Re: Site glass again..
Not to play down all your hardwork, but there was a guy selling the site windows on ebay, made from mineral glass for about $4 each, I bought a couple for my RZ350 front brakes!! They worked great and 5 years later are still clear.. It might be worth just coughing up the $4 and be done..
Gary

Gary
- Mag
- Posts: 1466
- Joined: Sun Mar 25, 2012 11:58 am
- Location: Silverlake, WA
- Motorcycle: 1982 Yamaha Venture (Crashed/Sold)
1982 1100 Silver Goldwing (sold)
1989 1500 Beige Goldwing (sold)
1988 1500 Beige Goldwing (current ride)
Re: Site glass again..
I need to do that, and what do you hold them in with? What type of glue, etc? (I hear yet ANOTHER project in my future!!!)
- virgilmobile
- Posts: 9102
- Joined: Sun Sep 19, 2010 5:39 pm
- Location: Denham Springs,La.
- Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I
Re: Site glass again..
Well the 'Lexan' type material is worse.It's cracking after 4 days.
Next test.Aquarium beads.$1.97 at Walmart.Dime sized,clear and colored.
I'll post pictures,and I do use real JB Weld.
Next test.Aquarium beads.$1.97 at Walmart.Dime sized,clear and colored.
I'll post pictures,and I do use real JB Weld.
- littlebeaver
- Posts: 4452
- Joined: Mon Sep 21, 2009 6:11 pm
- Location: Kansas City, Kansas
- Motorcycle: 1981 gl 1100 I , 79 Yamaha XS11
Special, 82 Kawa 750 CSR, 82 Kawa 750 LTD, 03 Kawa Nomad 1500, 99 Kawa Voyager 1200
Re: Site glass again..
Virgil can you fit a thicker piece of lexan in there, like 1/4" or is that too thick, I got a piece if you need some, I use it for my timing site caps or inspection caps...Just say the word and I will send you some..
Oh and it is Lexan...

- virgilmobile
- Posts: 9102
- Joined: Sun Sep 19, 2010 5:39 pm
- Location: Denham Springs,La.
- Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I
Re: Site glass again..
I'll post pictures later today as I get them compiled.I gave up on pastics as it seems brake fluid isn't friendly to anything I tried.
I ended up using glass.A local find and my favorite....cheep
I ended up using glass.A local find and my favorite....cheep
