Author Topic: Cosworth V8 1:12 scale  (Read 6492 times)

Offline Art K

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Re: Cosworth V8 1:12 scale
« Reply #60 on: December 04, 2021, 02:57:05 AM »
Steve,
It looks like you've been up to some very intricate work, twice. Looks very good.
Art
"The beautiful thing about learning is that no one can take it away from you" B.B. King

Offline steamer

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Re: Cosworth V8 1:12 scale
« Reply #61 on: December 04, 2021, 10:24:33 PM »
That's coming along beautifully Steve!!!

Dave
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline Steve Crow

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Re: Cosworth V8 1:12 scale
« Reply #62 on: December 06, 2021, 03:13:13 PM »
One of the most fiddly things on this build was hand fettling the bearing blocks so the camshaft turns freely with a minimum of play.



The cam shafts are supported by a sort of shell bearing. These were made by turning down brass bar to 2mm and boring out to 1.6mm.

These were then trimmed down to a semi circular C-section and burnished/work-hardened into place using a polished steel 1.6mm rod.

They are now held firmly in place by there own springiness.



I'm making all this up as I go along but it seems to be working fine.

Steve

Online crueby

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Re: Cosworth V8 1:12 scale
« Reply #63 on: December 06, 2021, 05:02:19 PM »
Quite impressive!!

Offline Steve Crow

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Re: Cosworth V8 1:12 scale
« Reply #64 on: December 07, 2021, 11:02:01 PM »
My next challenge is to finish the cam gear train. The principal gears are in place and running smoothly, I just need to sort out the idler gears.



Here are some sat in their final position.



Steve

Offline Admiral_dk

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Re: Cosworth V8 1:12 scale
« Reply #65 on: December 08, 2021, 11:22:49 AM »
Very nice progress  :ThumbsUp:

You are not doing things the easy way ...!

Since you have very small tollerances on the placement of these gears - are you placing the axels on excentrics so you can adjust them ?