Bicycle chain tensioner

A simple chain tensioner that uses the bosses in the frame for spring tension.

Will need a 2 m5 bolts, length will vary with frame/chain line, 3 m5 nuts, a pivot bolt with a 5mm shoulder and a salvaged spring from a rear derailleur.

tolerances could be better on the pivot hole but this iteration is working for me at the moment

Updated for tighter hole around pivot bolt. Have not tested though

Print Settings

Printer Brand:

Longer

Printer:

Longer LK5 Pro

Rafts:

No

Supports:

Yes

Resolution:

3.0 first layer. 2.0 the rest. adaptive layers

Infill:

80% gyroid

Filament: polymaker pla+ black

Notes:

7 walls. ironing top layer for better finish. printed with the pulley side down.