Whittle V8 drawing error?

[PropPeteParticipant @proppete]

I noticed from EW's drawings that the crankcase central web and the attached crankshaft bearing cap are different widths, and from the width of the crankshaft journal, it looks as if the web is too thin. I didn't notice this until I had made the crankcase! Because of this, I think the pilot hole for the bearing was thrown off-centre, and I'm having some difficulty with line boring it. Has anyone else noticed this? Are there any drawing errors that have been spotted by others? Only 499 more components to make!

Pete

[PropPeteParticipant @proppete]

Upper crankcase central web and bearing cap

[EmgeeParticipant @emgee]

Pete

I believe the cap is made to a width that controls crankshaft end float so it may be wider than the central web.

There is a Whittle v8 Group at iO Groups that was moved from the now redundant Yahoo Groups, some info there on an error on the plans but that doesn't relate to the central web or bearing cap.

Link below will take you to the iO Whittle group Join page.

**LINK**

Emgee

[PropPeteParticipant @proppete]

Thanks Emgee

There seem to be many tricks that model engineers use which are unknown to relative beginners like me! I should have realised that a hemisphere is perfectly adequate to control crankshaft endfloat in such a lightly loaded engine, but, as an ex-designer of full size stuff, I seem to have some difficulty in making that leap of faith!

Pete

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