Bob Lacey of
Vintage Wheels makes this comment on the thread
Pin drive bolts splitting Help Please
Quote:
2)Adapters -
material forged steel ,zinc plated
The standard vintage adapter has same external dimensions as other pin drive set ups for interchangeability.
Vintage adapters are both hub centric and stud centric
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Here on the right is a Trigo adapter; note how tall the angle is?
I have installed three sets of wheels on Trigo adapters:
1. Hallibrand magnesium "Cobra II" for the 427 S/C
2. Trigo aluminum 427 S/C
3. Vintage aluminum 427 S/C
So the tall angle does not interfere.