I have just completed building some new wheels for my '74 Jack Taylor Tandem. The hubs are Phil Wood however the front dropout spacing is an odd size. Fork ID is 106mm and OD is 117mm. The rear dropout is a more common 140mm ID and 151mm OD. Looking for a recommendation on tandem duty skewers that will fit these dimensions. The old wheels were bolt on.
Usual front hub width (OLD Over Locknut Dimension) is 100mm.
Do you mean that the hub and fork are 106mm wide? If so you should try some standard bike skewers. Modern ones made to fit thick aluminium fork blades may be able to deal with the extra width. Alternatively an old campag rear skewer could be threaded down to work - ask your local Engineering shop to help.
If your hub is 100mm wide then the fork should be about 102mm wide ID. If they are 106mm and steel forks this is easily within the springiness of the forks, so just use a normal QR and tighten it down to pull the fork blades together. You may wish to get a framebuilder to reset them to the correct width (cold set, i.e. bend it) if putting the wheels in and out smoothly is important to you. It's best to get someone with a proper jig to do it as it's otherwise near-impossible to get the forks symmetrical.