I acquired a 36H Torpedo Duomatic NOS hub and have some 28H rims. Is there an easy way of lacing these together? I was thinking of leaving 8H clear in opposing pair in the hub, spaced 90deg around the flange, but spoke length seems a challenge.
Interesting conundrum! Just the sort of thing to solve of a Saturday afternoon...
It's difficult because the 36 doesn't divide down very elegantly on each side of the hub (mmm 9s!).
Attached is my solution; Spokes would *not* be all of equal lengths as I'm sure you can tell. There's some crows-foot going on on two opposing sides; the pattern is three-spokes—skip-one—four-spokes—skip-one—three-spokes—skip-one—4-spokes—skip one; left side is same pattern rotated 90°.
Here's a good page with info on how to work out spoke lengths on wheels with disparate spoke sizes; this page for 36/24 but the principle for measuring is the same)