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ISCG bash guard

Creation's quality: 5.0/5 (1 vote)
Evaluation of members on the printability, utility, level of detail, etc.

3D model description

Simple bash guard to mount to frames with ISCG05 mounts. Second and third photos show the aftermath of a pretty hard hit on a large rock in Bear Brook state park in NH - it definitely works!

Various sizes to clear different chainrings ranging from 28t to 38t. Two designs of each, one for standard M6 screws - I use round head M6 screws and they clear the chainring with no problem. A second design has the bolt holes chamfered to work with flat head M6 screws.

Please note: this was designed for and tested on a 2019 Trek Fuel EX 9.9 with a 32t SRAM GX Eagle chainring. While it probably should work on other bikes/chainrings, I have no idea if it will.

Design is parametric and the F3D file is included. Set the chainring teeth under "Modify... Change Parameters" from anything 28t or larger - 26t runs into interference issues with the front bolt hole and the bash guard itself.

The "47" text in the photos is my own thing which is removed from the posted files. If you want to add your own text, it's in the F3D file, just need to edit Sketch2 and unsuppress Extrude7.

For a similar design, see: Bike Bash Guard for ISCG05 tabs by Drazen. I originally had provision for using all three tabs but didn't see the point of using the top bolt.

  • 3D file format: F3D and STL
  • Publication date: 2020/01/30 at 03:55





Note: I wanted to try Cults3D as a possible alternative to Thingiverse, but after giving it a bit of a look, I'm not super impressed. Feel free to visit my Thingiverse page if they can manage to keep that site running:

I went to school as a mechanical engineer, and got interested in 3D modeling, specifically the SDRC I-DEAS CAD/CAM software system. This interest got me my first job working for a CAD/CAM reseller doing pre and post-sales support. I was lucky to be involved in 3D printing in the early 90s - for a demo of rapid prototyping, I modeled the mouse from my HP-UX CAD workstation and it was rendered via stereolithography. I still have that model, but across the years I stopped using CAD and moved to systems administration. Now that 3D printing is affordable and mostly reliable, I've gotten into it and am having a blast. I printed all the usual cute little trinkets and tchotchkes, but quickly got bored of that. What I find most interesting is needing something, then spending a little bit of time in a CAD program and soon after that having a real, functional version of the part in my hand.

I'm a cyclist and bike mechanic as a hobby and a side job, and have found endless applications of 3D printing to both bikes and bike maintenance. Coworkers have also come to me with many varied requests, each of which has been an interesting challenge and an opportunity to learn.

I am constantly learning, constantly trying to challenge myself to learn new things and technologies, so hopefully as I progress my designs will continue to improve.

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