Motorcycle cowl damage

[ColSearle]

Hello
My motorcycle blew over in a recent storm. The left cowl is cracked. I have glued and sanded the cracked parts. I will further bond when my plastic welder arrives. I have ordered an aerosol of the correct colour. I do not want to repaint the entire cowl if possible. Do I need to apply a primer to the cracked parts or is this a waste of time? The colour of the paint is silver. I can't post a pic at the moment (new starter rules).
Many Thanks

[V8covin]

If you've sanded through the top coat of paint you need primer,if you've sanded back to the plastic you also need a plastic primer/adhesion promoter

[ColSearle]

Thank you. I never considered the pre primer adhesion requirement. Some areas are black so I
I am going to get this adhesion paint.

[TallPaul]

I think you’ll struggle to weld it now you’ve glued it- the glue often contaminates the weld area.

[ColSearle]

Thank you. There is a problem with my welder order so am sticking with the glue only solution.

[twibs]

If the glue doesn't hold up I recently used plastex to repair my fairings with great success.

[ColSearle]

Thanks for the plastex tip. I'm almost finished with the painting. Nowhere near perfect but I'm smiling with the result.

[ColSearle]

Here it is when it was damaged.


Here it is fixed.



That cost me £50 and took under a week. Could be better I know but I am a complete rookie.