Supporting > Vehicles & Models
2" Minnie Traction Engine
cnr6400:
:ThumbsUp: :ThumbsUp: :ThumbsUp: :popcorn: :popcorn: :popcorn: It's lookin good. :cheers:
packmule:
Thanks for all your kind comments.
Some of the rivets aren't perfect but I can live with that. Now I can start another part which wont take as long and it should start to come together
packmule:
Starting to machine the cylinder block. The plans state to use gunmetal for the cylinder liner is this the best way to go or would you suggest something else ?
crueby:
If the piston head is steel or cast iron I'd use bearing bronze (not silicon bronze, the bearing bronze is a lot easier to work). 'Gunmetal' is kind of a catchall term, depends what year and what country you are in what it really means, from what I've seen.
Jasonb:
Rather depends on what you are doing for the cylinder and rings as the book/plans are based on using GM castings for both cylinder and liner and the use of a silicon ring.
If GM cylinder then a piece of hollow 660 leaded bronze bar would be my choice and that will work well with Viton or silicon rings.
Liner cut from grade 250 cast iron bar would be a good option particularly if it is an iron cylinder and you want to use iron rings. Fit with high temp 648 Loctite.
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