Joined: Nov 2006
Posts: 19,810
Likes: 597
From: NJ, NYC, LI
Bikes: 1940s Fothergill, 1959 Allegro Special, 1963? Claud Butler Olympic Sprint, Lambert 'Clubman', 1974 Fuji "the Ace", 1976 Holdsworth 650b conversion rando bike, 1983 Trek 720 tourer, 1984 Counterpoint Opus II, 1993 Basso Gap, 2010 Downtube 8h, and...
I don't believe I've ever seen a Dotek cottered steel crank; but if it looks like the one in the photo you linked, I can well believe you have a Dotek cotterless aluminum crank, which would indeed have a 110 bcd chain ring size. You can get those chain rings as small as 34 teeth. Changing the chain ring is not a big deal; take out the five bolts that hold on both rings, take off both rings, then put on the rings you want to use. You'll need a 5 mm allen wrench.
__________________
www.rhmsaddles.com.