Anthony,
Your TA cranks are not the right ones for the job, as Jerry noted. The solid-armed Campi-style cranks with a wider BCD will offer a much better platform for your uses, whether you use road or track rings on your bike.
Here's another possibility: I installed my 1970s Campi NR double cranks on my 1973 Peugeot UO-18 mixte (my around-town "truck" bike) with a single front ring on the inside and a single Campi cyclocross chain guard on the outside. (The 'cross guards come in pairs, and were used both inside and outside the single 'cross chainring in cyclocross.) It helps keep my pants a bit cleaner and looks much more elegant than a plastic or metal chainguard.
Here in flat Alameda, I get by just fine with a 6-speed (not original, but useful) SIS derailleur and freewheel (I know, I know...:-).
The 'cross chainguard looks good on the crankset, and could also work on your "fixie," depending on your aesthetic sensibilities. (Mine tend towards the flexible/heretical, as already well documented here. :-)
Jon Spangler
Alameda, California USA (on the USA's Left Coast, near Oakland) hudsonspangler@earthlink.net
Longleaf Bicycles <longleafbicycles@gmail.com> wrote: I'm looking for some cranks for a new fixed wheel project (modern frameset) and I'm not excited about current (non Record) single chainring crank offerings.
I have a spare set of TA Pro 5 crankarms, but have never used these on a fixed wheel bike. I am concerned that the lack of a second ring to stiffen the outer ring and the higher torque placed on the drivetrain of a fixed wheel bike makes the small BCD of the TA cranks unsuitable.
Is this a misplaced concern? Has anyone tried this? I don't care about a little flex and while it might be silly and an overestimation of my own power to think I'd bend a chainring the idea gave me enough pause that I thought I'd ask for some advice.
Anthony King
Longleaf Bicycles
805 B North Fourth St..
Wilmington, North Carolina 28401
910.341.3049 p
910.341.3059 f
longleafbicycles.com