How To Fix Broken Mudguard

How are you at fitting them?
Plastic guards don't like being forced to fit so ideally the stays should do no more than keep them from flopping about rather than using them to pull/push the guard in any direction.
I've a rear light mounted on my rear guard. Use a big (ish) bolt, 6mm and above and a big washer on either side of the guard. Make sure everything is dead tight. Shouldn't be any issues after that.
Ps...it wouldn't hurt to bend the washers to the guards profile/curvature.

Last edited: 14 Sep 2019

Drill out the rivets holding on the remains of the bracket, or file the broken end flat.

Drill 2 holes through the mudguard, one either side of the seat stay bridge.

Thread a cable tie through the holes and around the bridge and pull it firm.

Stand back and admire your manly awesomeness.

The Blue Peter is strong in this one

I used gorilla glue to fix my mudguard last year, in fact I tend to use gorilla glue to fix everything recently.
I should replace the mudguard really but it still seems more sturdy than it originally was.

Drill out the rivets holding on the remains of the bracket, or file the broken end flat.

Drill 2 holes through the mudguard, one either side of the seat stay bridge.

Thread a cable tie through the holes and around the bridge and pull it firm.

Stand back and admire your manly awesomeness.

Just what I did, when the rear cracked on my CGR, at the bridge
Done, on a bigger scale, with truck mudguards
Two small ties, holding the two halves together, with the bigger one over the bridge
Mudguards. CGR. 3.JPG Mudguards. CGR. 12.JPG

Just what I did, when the rear cracked on my CGR, at the bridge Two small ties, holding the two halves together, with the bigger one over the bridge]

You should have added some duct tape across the crack for a proper quality bodge. ^_^

It'll hold until I get a permanent fix sorted.

Cable ties and duct tape are a permanent fix in my book. At least until they fail again in such a way that they just can't be bodged any more.

If the mudguard is torn where the bracket went, then I would put a thin layer of inner tube around it and cover with electric tape and then bolt the mudguard direct to the frame. This will survive, my rear mudguard has been like this for quite a while.

IME 35mm mudguards will break pretty quickly due to vibration. They generally crack across their width either at the bridge or where one of the stay brackets is riveted on. Classic stress raiser stuff.

45mm and wider guards are much stiffer and last much longer.