Originally Posted by
LeicaLad
The Peter White triple-izer is a bolt on which works well. Key, as Sixty-Fiver pointed out, is the BB spindle length.
I sent a Campy drive crank arm to Elliot Bay Cycles in Seattle, to have Bob Freeman drill a permanent triple-ized bolt holes. I turned a Super Record into a Campy triple that could take smaller inner rings than the original Campy triple (that, at 100bcd, was limited to 36t). It was slightly less expensive than the Peter White solution, but only just.
I did swap out the bottom bracket to a proper triple BB, tho.
It's worth it to get those lower gears. IMHO, of course.
Yes, that's always another option (to have the arm modified), but it's not reversible.
FWIW, that 100 mm BCD will take a chainring as small as 31 teeth (but Campagnolo only made 36-tooth ones). Jim Merz used to make 31-tooth rings for those, but I don't think he has done any in ages.
Are the 'Peter White parts" just a TA tripleizer ring? A Willow one? I'll go look at his website.