Fender Flute 1" & 1-1/8"

thingiverse

The Innovative Solution Fender Flute (http://problemsolversbike.com/products/fender_flute), optimized for 3D printing. Features 8 holes, spaced precisely 10 mm apart for maximum efficiency. Two versions are available - one for 1-1/8" steerer tubes and another for 1" steerer tubes. The Design Process http://problemsolversbike.com/products/fender_flute Since it's 3D printed, I had to get creative with the design. To accommodate M6 threads, I used an inset in the back that holds a locknut (9.91 mm across) which requires a 10 mm wrench for tightening. The design holds about half of the flat height, resulting in a secure 2.69 mm. I drew inspiration from existing designs and adapted them to fit my needs. I replicated the 100 mm length and number of holes (8), but made significant changes to the thickness and width. Instead of adhering to the original 10 mm thickness and 20 mm width, I opted for a more streamlined approach with 7.5 mm thickness. A crucial consideration was the internal diameter (ID) of the steerer tube, which is 1/8" smaller than its outer diameter (OD). To address this issue, I designed a custom solution (http://www.retrobike.co.uk/forum/viewtopic.php?t=207027). Assembly & Materials Two M6 bolts and two M6 nuts or locknuts are required for assembly. The process is straightforward once you review the source image. Simply assemble the components as shown. Future Developments There are a few ideas I'd like to explore in the future, although they may not materialize anytime soon. I considered replacing discrete positions with a single long slot, but then realized that front fenders often have slots anyway. Perhaps I'll revisit this idea someday and create a more versatile design. Another potential improvement would be to parameterize or customize the design according to individual needs. Maybe I'll tackle this project in the future as well. Updates February 2, 2017 If you're viewing this and thinking it resembles a drop bolt for brakes, you're not alone! However, I strongly advise against using it as such. The torque required to stop a wheel spinning at high speed would cause it to break instantly. Instead, consider using proven solutions like these: http://www.sheldonbrown.com/home-drop.html http://handsonbike.blogspot.com/2013/09/journey-of-boardwalk-part-31-elosix.html https://www.lfgss.com/conversations/214032/