Open Crank IC Plans

hello , has anyone come across plans for an open crank engine made from bar stock ?

Steam or ic?

There is the Webster OC engine that is ic....

The Webster and kerzel open crank hit and miss engines can be found on the web if you want something small.

Model Engine Builder will sell the two back issues that have very good drawings for the Zero-six engine in digital format for a modest cost. I built it with some modifications so it did not look so much like a barstock engine but mechanically all the same.

Jerry Howell's "farmboy" is also a nice looking opencrank from barstock and ideal for those that like making aluminium swarf

Edited By JasonB on 26/03/2019 12:36:46

It started here Dad's horizontal

went on here still horizontal

There's no stopping him now vertical but this thread starts a bit funny, page two has a picture.

Stewart has done more and more complex

BTW it would help others in future searches if you made your title more explanatory and the text a bit more detailed.

sorry , I should have indicated that I am after an IC engine , made several steamers , and just fancied a change , but the casting sets are so expensive

One more for the list but it's quite big. J & E Junior

the J&E looks interesting , if it was reduced a bit

Yes I should think half or two thirds that size would work out OK. If you prefer metric then working to a ratio of 1/16" = 1mm will give mostly whole numbers, 192mm dia flywheels and 32mm bore.

The Rina engine was described in Model Engineer a few years back. were a few problem areas in the drawings but I can help with corrections. I haven't actually built the engine.

John