GoldenCheetah VS virtualbow

There is also an FAQ covering most common questions here, for those not familiar with GC: https://github.com/GoldenCheetah/GoldenCheetah/wiki/FAQ

For data analysis, goldencheetah.org + Intervals.icu are free and better alternative.

I've found the issue: https://github.com/GoldenCheetah/GoldenCheetah/issues/3645 and https://github.com/dtcooper/python-fitparse/pull/116

GC has a very powerful expression system, based on R.

GoldenCheetah - http://goldencheetah.org/

Now I had a hard time finding rupture and elasticity data for Gordon’s Bo-Tuff backing. But if you know the specs of your particular glass/carbon VirtualBow would probably save you a lot of time, or you might have access to full FEA mechanical software, but those models usually take a while to draw.

Yes it is open source. https://www.virtualbow.org/ Check the manual there is all information needed for modeling laminated bow or selfbow and material properties for that and you can make simple bow in few minutes. Anyway for maple core you need mass 600-700 kg/m3 and Elastic modulus 11.5 Gp and for fiberglass 1800 kg/m3 and el. modulus 40 Gp. I'm using this and poundage in finished bow is accurate to 0.5 pounds.

I'm currently in the process of finishing the next release. Still some testing, bug fixing and documentation to be done, so I can't yet say when it will be ready. But there are now regular [development releases on GitHub](https://github.com/bow-simulation/virtualbow/releases), so it's already possible to test the new features. Not recommended for serious use though...