Bicycle Bottle Holder Bracket (Short)

Basic Model

This model allows installation of a cycling accessory on the circular portion of bicycle tube frame or seat post at a location where no factory installed studs are available. The bracket is secured to the bike with two tyraps in this particular case.  The model is prepped for 5mm bolts and nuts.  The nuts are press-fit into hexagonal recesses in the back of the bracket.  10mm bolts worked well in my particular case.

The bracket can be applied to any circular tube location on a bike, exercise equipment or similar.  It can also be used for a tire pump or similar accessory.

Note that some of the photos are a longer version of the bracket but shown for nut insert placement and similar.

Background

This bracket was needed for an Aventon ebike.  A good bike, but limited provisions for accessories.  This fits below the seat on the “R” size Pacer model.  Note that space is limited on this bike, and shorter water bottles fit better particularly if the seat post is only partially extended.  For a bracket to fit the “L” model see "Bicycle Bottle Holder Bracket (Long)".

Parametrics

The model was built in Fusion 360.  The basic features of this model include two mounting stud locations and three clamping locations.  5mm hardware is assumed, however there is a variable for the size of the nut inset.

The parameters are in millimeters and current settings are:

BikeTubeDiameter = 35.7

ClampWidth = 4

ClampDepth = 2 (this is the depth of the clamp slot)

CircumscribedNutRadius = 3.95

StudSpacing = 63

Printing

This model was printed in an upright position with a brim using PTEG with 0.15 layer height and 0.4 nozzle.  The print took about 2 hours 26 minutes.

Installation

The bracket is shown with black tyraps for clamping.  Alternatively stainless hose clamps, velcro straps, or similar could be used.  The parameters noted above can be adjusted for your particular clamping method.  

In order to firm-up the placement and minimize any shifting, I used a rubber backer on the bracket.  I up-cycled a piece of old tire tube for the job.  Note that the interior of the inner-tube is usually treated with a talc type powder to prevent adhesion to itself during manufacture and use.  I removed the powder with lacquer thinner which had the added advantage of adding a tackiness to the rubber.  The rubber also protects the bike tube from minor marking from the mounting bolt if it protrudes slightly.

Alternatively an adhesive of sorts could be used but the rubber tube backing can be easily relocated.

(Note that photo of installation is an earlier non-parametric version.)