making plastics tabs with JB weld and fiberglass weave

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Rocketman122
Posts: 311
Joined: Fri May 29, 2020 8:15 pm
Current Ride: eee

making plastics tabs with JB weld and fiberglass weave

Post by Rocketman122 »

I use the fiberglass weave like rebar in cement. works great. very strong. better than any plastic epoxy ive ever used. since fiberglass resin will tend to peel away, I didnt want to chance it. of the 5 tabs on the fairing, 2 were missing (bought it used this way.) I think there are also other plastics I need to look over and either repair or add a light spread of JBW for added support strength. first time using JBW. easily exceeded expectations. I like watching project farm videos. in one he compares plastic epoxies and throws in original JBW (which really sint made to use with plastics) just to see results. in all tests JBW either exceeded them or at least matched them. a great expoxy to have for repairs.

1-clean area with alcohol. much dirt there.
2-scuff with 180grit snadpaper
3-wipe with alcohol
4-have jb weld mixed up.
5-cut fb weave (make sure its thin and flexible) to part thats larger than area needed for added strength
6-spread some JBW (#8281 ) then use the fiberglass weave (FW) on the surface and tuck it behind curves flat and thin so the fairing will fit in place. too thick and it might not fit in place. in the photos you can see a sharp angle in the fairing part. if you fill it too much on the back, it will have a hard time fitting in place as I had learned.
7-use a bit of jbw on top and finalize the rough spread of it and let dry. I had to use some plastic spoons to hold the angle for the tabs I created. after 2 hours when it starts to get hard, I used a razor to remove the spoon so it can finalize its shape. after 4 hours or so it should harden enough but have a bit of flex. thats when I cut the tab shapes (dremel) and use a little grinding wheel to get the part to fit. meaning...there is a edge where it needs to fit in but the added thickness of jbw and fw made it a bit difficult so i used a razor blade and cut a few slivers to remove a bit out. I mounted it, then used a pick and a small screwdriver to make hole to screw the fairing in place. let it sit for 2 days (takes longer in cold weather) to cure and finalize its shape.
8-took it off, then used a 2nd layer to give the tab a bit more thickness and strength. I checked it after the first stage and its VERY strong. with 2nd layer it came out super strong. the fw gives the base support. by itself I doubt it would have the same strength. getting the angle of the tab is crucial. so I held the fw/jbw in a certain position to the rough angle of the tab. then after a few hours, it was tacky but not sticky and still had a ligh flex to it which I took advantage of because I was a bit off as I saw when I came to mount. luckily I could coax it in place and let it finally hold its place and cure.

overall extremely happy. grey shows out on the edge where I spread jbw for extra support. some 1000grit sanding and matte painting is in order. I plan to paint the matte black paint of all the plastics to a black gloss. I absolutely hate matte paint. it always looks so old very quickly. even old gloss paint can be revived with clay and polish . not matte though. to each his own. matte seems to be a trend for now

Rocketman122
Posts: 311
Joined: Fri May 29, 2020 8:15 pm
Current Ride: eee

Re: making plastics tabs with JB weld and fiberglass weave

Post by Rocketman122 »


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2wheelover51
Posts: 1136
Joined: Sat Aug 08, 2015 3:12 am
Current Ride: 2012 Burgman 400 Limited
Location: Poole, Dorset

Re: making plastics tabs with JB weld and fiberglass weave

Post by 2wheelover51 »

Very handy to know. JBW is great stuff. I once successfully reattached some magnets to the rotor on my SV1000 which had come off. They stayed on for the next couple of years that I had the bike. I used a mixture of JBW and Steelstik (another JBW product) I would never have thought to use fibre-glass matting with it though.

Rocketman122
Posts: 311
Joined: Fri May 29, 2020 8:15 pm
Current Ride: eee

Re: making plastics tabs with JB weld and fiberglass weave

Post by Rocketman122 »

haha the weirdest things we use to fix things
magnets for sensor/abs, or is rotor mean stator also?

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2wheelover51
Posts: 1136
Joined: Sat Aug 08, 2015 3:12 am
Current Ride: 2012 Burgman 400 Limited
Location: Poole, Dorset

Re: making plastics tabs with JB weld and fiberglass weave

Post by 2wheelover51 »

The rotor magnets were generator rotor magnets, not sensors. Big powerful magnets running in hot oil mist like the rest of the generator (rotor and stator)
The SV1000 magnets were not encapsulated in alloy like most generator rotors but merely attached with epoxy by Suzuki (cheap job by Suzuki) and the epoxy failed after 2-3 years. Look on the SV website for more info. They should have been recalled and a better rotor installed, but it never happened.

Rocketman122
Posts: 311
Joined: Fri May 29, 2020 8:15 pm
Current Ride: eee

Re: making plastics tabs with JB weld and fiberglass weave

Post by Rocketman122 »

ah, Yes, I underdstand. yea, even pulling that magnet off is a little battle.

nice that JBW held. heat and oil on it and it goes well. thanks for the feedback.

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