How to machine a fish belly on a rod

[BinbagParticipant @binbag]

hi

I am making the Anthony Mount trapezium engine and it calls for the connecting rods to be fish bellied.

Any one out there done this before and have advice on best practice.

Thanks

[BinbagParticipant @binbag]

[JasonBModerator @jasonb]

Have a read from my post at 12.40 on 11-1-14 onwards

[Roderick JenkinsParticipant @roderickjenkins93242]

Tubal Cain describes a somewhat different method in "Simple Workshop Devices" that gives a true curve to the rod, rather than just a taper. It involves setting the tailstock over so not really worth the trouble in my view. I'd go with Jason's method.

Rod

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