The wire 2mm I used was only just strong enough for this so I'd use 2.5mm or even 3mm wire if I made these again. The front guard is perfect but the back one rattles a little.
I've entered this into the inner tube reuse contest so don't forget to have a look at all of the entries and vote for your favourite ones, when the time comes.
Here's what you'll need :
- Steel wire 2.5mm - 3mm (if using 3mm wire, a small amount 2mm wire will be better for the cross pieces)
- Scrap steel sheet about 1mm thick
- Old inner tube (thick MTB tube is best)
- Washers to suite the bolts
- Leather punch
- Eyelet tool
- Allen keys to suit bike
Step 1: Cut your inner tube to size.
We'll just work on the front mudguard first. Measure the distance between fork eyelets and the edge of the mudguard. Add this to the length of the piece of inner tube you cut. Double this and add a foot spare for mistakes/clearances etc.
Cut a piece of the steel wire to this length and bend a U shape in the centre about the same width as your inner tube. This will be the beginning of the skeleton of the mudguard.