solenoid engines
thingiverse
both files for the I4 and single piston fusion files also included cuz im bad at fusion brass parts for the I4 are 5/32 and 3/16 KS tubing bearings are normal skateboard ones I4 solenoids https://www.amazon.com/gp/product/B07QPSZCYB/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B07QPSZCYB&linkCode=as2&tag=petersripol-20&linkId=3ca45e326c319a496954eb2eb6a18ac4 single solenoid https://www.amazon.com/gp/product/B07QPSZCYB/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B07QPSZCYB&linkCode=as2&tag=petersripol-20&linkId=3ca45e326c319a496954eb2eb6a18ac4 This will have to be cut and modified to get the 3d printed connecting rod adapter to fit
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