Update by Tim Suddard to the
Elva Mk VI project car
Aug 1, 2022
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Elva
We also needed to fabricate a spacer or bellhousing extension for our Elva Mk VI sports racer. This piece is needed to connect the transmission to the mounting plate that we had recently replicated.
Again, thanks to a reader, we finally had a template that we could copy.
And again, dimensions were critical as we needed to keep the transmission’s input shaft perfectly centered in the pilot bearing.
Once we determined that our borrowed spacer was in fact absolutely correct, we set about to duplicate it.
To do so, we measured it, made a CAD drawing, and then put the information into our home CNC router. For more details on this process, check out this story: What is a technical drawing, and why do I need one to make precision parts? | Making Stuff: Part 1.
The piece of aluminum that we used to build this spacer cost us more than $300, so we first cut a spacer out of wood.
Once the test piece properly fit, we could cut the real one from aluminum.
After cutting and a test fit, we could drill the necessary holes and thread in new studs so we could mount our engine to our transmission.
We also had to ensure that the starter and flywheel still perfect fit. Fortunately, they did.
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