The mudguard is manufactured from household tools and spare parts lying around and takes about 30 minutes to make and fit. The main structure is from an old scrap aluminum bike wheel. Since this is essentially a bike part it somehow looks okay and works well as a mudguard.
Step 1: Get your kit together
1. A glue gun and a glue stick.
2. A hacksaw.
3. A scrap bike wheel (I used a battered aluminum wheel, measuring 622x17x6106, The larger the diameter of the wheel the better as you want it to curve around your wheel. Adjust the size of your jubilee clip accordingly.)
4. A jubilee clip (i used a 12-20mm clip but the size of the girth of your scrap wheel will dictate which size you should use.You want the clip to be a tight fit.)
5. A metal file.
6. A spoke and nipple.
7. A piece of string around 330mm long.
8. A M6 bolt 40-50mm long.
9. 6 x M6 nuts.
10. A bendable sheet of tough plastic roughly 300mm by 40mm. (I had a small sheet of transparent thick vinyl lying round but you could easily use thick plastic from a bottle or other container)
Step 2: Cut your Wheel up
Using the Hacksaw cut through the wheel and remove your section. Unscrewing the nipples from the spokes. Save a nipple and a spoke for later. File down the ends so that they are square and clean. This will allow it to sit cleanly against the bridge.
Step 3: Assemble bolt and nuts
Step 4: Fix the bolt to the inner rim
Wait a couple of minutes until the glue is dry then remove any excess with a file or sharp knife and fit on the jubilee clip and tighten.
This setup should be strong enough to support the structure. However you could probably think up stronger and less clunky designs using better materials.
Step 5: Fit the plastic extender
Step 6: Mount the mudguard on the brake bridge.
The beauty of this hack is that it is easy to fit and remove, is worthless to thieves and is recycling busted wheels. Any improvements suggestions on materials and design are welcome.