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Evo Sportster project started October 2024,

After receiving quite a few requests for a good CAD
model of an Evo Sportster drivetrain, I bought an empty
unit from 1990 and will show the whole process here:




Modeling the cylinders turned out to be relatively simple, while doing that I had shipped the heads
and valvecovers to Blink Wetblasting to get them cleaned up before scanning, he did a great job!

 


Clean parts give much better quality scans! The heads were very timeconsuming to convert from STL to CAD, around 400 features each but eventually I got them done.

 

Next will be the valvecovers and then it will be done!

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