40 cc Inline 4 Cylinder

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nfk

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Nice project!
I don`t fully understand how your crank is being mounted, can you explain a bit the design?

Norberto
 

nfk

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So simple and so clever! :bow:
Thanks for the pics, they explain everything!
 

coopertje

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Hi Tony,

Nice work on the engine, like that crank :bow:

Question, how did you make the seats for the crank bearings in the block? In the lathe with a boringbar, your mill, other? I have been thinking quite some time how to achieve a nice round boring in a relative long block.....

Keep the pics coming!!

Best regards Jeroen
 

tonyengines

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coopertje said:
Hi Tony,

Nice work on the engine, like that crank :bow:

Question, how did you make the seats for the crank bearings in the block? In the lathe with a boringbar, your mill, other? I have been thinking quite some time how to achieve a nice round boring in a relative long block.....

Keep the pics coming!!

Best regards Jeroen

I have booring in the lathe

IM004094.JPG


IM004095.JPG


IM004096.JPG
 

GailInNM

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Very nice work, Tony. I appreciate the clear descriptions of the operations in your thread.
Gail in NM
 

coopertje

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Hi Tony,

Thanks for the clear explanation, it helps a lot! Nice tip of sacrificing an old tool bit holder and put that in the bar. I will keep this in mind when I will build my first multiple cylinder engine in some time.

I will be following along your build.

Best regards Jeroen
 

kustomkb

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Great looking work as usual Tony!

Keep it up.
 

cfellows

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Great looking engine! What's the bore and stroke?

Chuck
 

nfk

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Tony, your engine is looking great! :bow:
 

agmachado

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Hi Tony,

Very cool, When we have more news?

Take care,

Alexandre
 

Tony64

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i'm ---tonyengines --- i can't recover my passwort now i'm Tony64
 

Longboy

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Roller bearing cranks are an easy spin! Where is your engine these days?
 
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