Been away from the computer for the past week, or so, helping my mother settle into a long care facility. Anyway...
I do have a clamp that might work for a set of center pulls but will use it only as a last resort. There are a few bikes at the local dump, one of which came home with me yesterday (an old but nice Baraccuda). One of those bikes, a lovely condition Raleigh Record step through, sports a set of side pulls with a reach long enough to fit my needs for test riding the Rabeneick. Gotta go get that Raleigh today...