Dr Bill
Afraid I've never seen this done so can't help with yr question. You're probably already aware of this but in case not its worth pointing out that I the D_Ace track hubs are not really very well sealed, and so they'd need a fair bit of looking after if you're likely to ride in wet conditions. There's a basic plastic cover over the bearings but no rubber seal etc. Maybe worth considering one of the more road-specific fixed hubs out there eg Phil / Formula / Goldtec etc. I run Miche Pistas on my road fixed and although not brilliant they at least have some weather-proofing by virtue of using cartridge bearings which have their own small rubber seal, something the D-Aces do not have.
mickster