New used upper fairing.

[MatYl]

I got new upper fairing couple of days ago. It was in better condition than my old one, but there was some broken fasteners so I had to fix them. I used fibreglass and some 0,8mm tinplate. And now I have upper fairing with unbroken fastener . Perhaps some painting later, too.

[fintip]

It was a plastic fairing that you did fiberglass repair on? Could you show the results?

[keand3]

I got new upper fairing couple of days ago. It was in better condition than my old one, but there was some broken fasteners so I had to fix them. I used fibreglass and some 0,8mm tinplate. And now I have upper fairing with unbroken fastener . Perhaps some painting later, too.

Dude, a good advice: never repair plastic with fiberglass! It will not last.
They at two completely different materials and need completely different compounds and method for repairs. Don't ask how i know  
The fiberglass would stick on to it for just so long before it starts to tear apart.

Next time you should use plastic welding instead with a heatgun or soldding iron or a plasticwelder, much more reliable, quicker and stronger too. (You might ad the fibercloth into the welding for strength)

To illustrate my point, take a look at the picture below. It's from a repair done by the previous owner were fiberglass has been used to "glue" back broken pieces.
At this pictures you can see the side of it, but it's starting to crack open. Soon after the picture was taken, the hole shit broke of due too repair done with fiberglass.
I'm not saying that a repair with fiberglass is not possible, just saying it will never be as strong as a plastic weld. There isn't much vibration need until the fiberglass starts showing it's weakness.
But for your sake I am hoping i am wrong, cause no one likes a cracked fairing.

It was a plastic fairing that you did fiberglass repair on? Could you show the results?

I too would love to see pictures

Cheers mate

Ken

[MatYl]

Yes, I know that fiberglass is not the best way to repair fairings. But still I wanted to try. Next time welding  . Well, I should take some photos.

[movenon]

You can also bond it with ABS cement (black ABS pipe glue) . It is acetone based and technically "melts" into to abs. But for tabs I think I would prefer plastic welding if possable.

I ran a bunch of informal stress test with abs and different glues / fiberglass etc..  The fiberglass just will not bond to ABS. It will work to a point but I wouldn't recommend using it where you need any strength.

For backing or reinforcement, window screen works pretty good along with thin sheets or chunks of ABS. You can take a glass jar and mix some fine (small) chunks of ABS scraps in acetone to make a custom thick slurry of glue. You might have to let it sit over night to totally dissolve the ABS.

you can heat small sheet of ABS with a heat gun, then bend it or form it easily, cools rapidly in to the shape it was formed. Use gloves 

If you run across some broken bike fairing material (no shortage of it out there, Think I left a bit of it in Calif.),...... save a little in a box for future repair material.

That's about the extent of my limited experience with ABS.
George

[rktmanfj]

For backing or reinforcement, window screen works pretty good along with thin sheets or chunks of ABS. You can take a glass jar and mix some fine (small) chunks of ABS scraps in acetone to make a custom thick slurry of glue. You might have to let it sit over night to totally dissolve the ABS.

A 'cheese grater' file works great for this.

[keand3]

George it was your experience that showed me how to do the abs repairs properly..
Thanks for that by the way

[movenon]

George it was your experience that showed me how to do the abs repairs properly..
Thanks for that by the way

Poverty and school of hard knocks
George

[MatYl]

Photos.




And same in the other side. If this won't work, I try some other way. Many thanks for tips  .
But perhaps this could be a quite good solution: http://www.poly26.com/carenage-moto-tuning-yamaha-1200-fj-1988-1990_5-148.html

[movenon]

Your repair looks good ! Wish we could get some of that stuff from POLY26 here in the US !
George

[ribbert]

I hate fibreglassing and avoid it where I can, so am no expert, but I haven't had a problem repairing the plastics with it. Even on tricky areas like the front mudguard tabs which were broken into little pieces. All I do is roughly score the area, wipe it with Prepsol or even acetone and use mat. The mudguard has done 20,000K.
Maybe ignorance in this case is bliss. Have people here actually had failures themselves or just stayed away from it on the advice of others?

Noel

[soundmindryan]

You can also bond it with ABS cement (black ABS pipe glue) . It is acetone based and technically "melts" into to abs. But for tabs I think I would prefer plastic welding if possable.

I ran a bunch of informal stress test with abs and different glues / fiberglass etc..  The fiberglass just will not bond to ABS. It will work to a point but I wouldn't recommend using it where you need any strength.

For backing or reinforcement, window screen works pretty good along with thin sheets or chunks of ABS. You can take a glass jar and mix some fine (small) chunks of ABS scraps in acetone to make a custom thick slurry of glue. You might have to let it sit over night to totally dissolve the ABS.

you can heat small sheet of ABS with a heat gun, then bend it or form it easily, cools rapidly in to the shape it was formed. Use gloves 

If you run across some broken bike fairing material (no shortage of it out there, Think I left a bit of it in Calif.),...... save a little in a box for future repair material.

That's about the extent of my limited experience with ABS.
George

I've made extensive repairs with the ABS or "All-Purpose" yellow label pipe glue, using old fairing sections as repair doublers on the backside of the fairing. Works WONDERS! Just make sure all paint is removed on bonding surfaces. Clean with the pipe cleaner solution (acetone/MEK), glue, clamp, and come back in an hour or so. Good as new.

[Arnie]

I wouldn't say I'm an expert with glass either, but I've used it to repair and/or reinforce ABS with very good results.  Anything that required strength I used epoxy resin on and sometimes added steel window screening too.

Arnie

Maybe ignorance in this case is bliss. Have people here actually had failures themselves or just stayed away from it on the advice of others?

Noel

[Arnie]

George,

I didn't see anything on their site saying they wouldn't ship to US (or Aus).  In fact, they said that all prices included VAT which would be removed for non-EU buyers.  They also said they don't answer emails, but to call them.  Do you speak French?

Arnie

Your repair looks good ! Wish we could get some of that stuff from POLY26 here in the US !
George

[movenon]

French is another problem........ Wish I had those fiberglass scoops .  I did see there was a Canadian dealer but I think it was French Canadian.......
I bet the shipping is horrendous for a fairing...
George