Qidi Plus 4 Adjustable belt tensioner Mod using M3 hardware

Remix of Jerky_FPV Belt tensioners but using M3 hardware and M3 set screws. Designed to be adjusted without tools once installed. 

Hardware needed:

• 6x M3 heat inserts M3x5x4
• 4x M3 x 14 for installing on Plus 4 (up to 16mm will work but 12mm wont) 
• 2x M3 x 30 for tensioner adjustment (can run smaller up to 20mm i think)
  
   

Print using ABS/ASA or stronger material, i used 5 walls and 40% infill, might need to adjust scale to 101% to account for shrinkage depending on the material printed. 

 

Stock Belt tensioners:

Printed belt Tensioner:

input shaper with stock belt tensioner

Input shaper after printed belt tensioner and adjusting belts to -5.15mm on the BTT tension gauge

Big thanks to Spooknik! for the awesome troubleshooting support, Fabreeko_Duncan for the cad work, jerky_FPV for the original model and all the awesome members of the Qidi Plus 4 discord.

remix to use M3 hardware and be adjustable without tools