Downtube shifter conversion

thingiverse

The shimano equivalents are running for 25€ right now... Too much for a piece of plastic. These may not be as elegant but will do the job. You will need cheap inline adjusters since these do not have that kind of feature. Requires ferrules. PETG is fine but I recommend CF Nylon. All tollerances have already been taken into account, however, based on how good your printer is, you may have to scale it up or down a little (I had to, at 97%). Everything should be self suporting. Print in the indicated orientation for maximum strenght. EVERYTHING SHOULD BE A THIGHT FIT for shifting accuracy! Keep in mind that this is a structural element, I won't trust a crappy untuned printer processing PLA for something like this. If this fails you will suddently loose shifting and go from any gear you're in into small ring-small sprocket. You may fall if you're sprinting, possibly causing serious injuries. Sure enough, a good day riding your bike will result in a crappy experience. Use this design as untested and at your own risk, I will not respond of any failures.