I am asking for advice on replacing my bent chainwheel. My '06 Montaque Hummer3 has a Tracer® Romax crank with a 42/34/24T chainwheel. I think the chainwheel has been bent since day one, but it took me till now to put a dial indicator on it. Run-out is a total of .04", from +.0185" to -.0125 in a run of about 2" across the crankarm on the 42T to .030" on the 34T and .08" on the 24T. I believe these are 170 mm crankarms.
A friend advised I pull the chainwheel and use a vice to avoid lateral pressure on the crankset. It looks to me like the chainwheel is riveted (pinned??) to the crankarm not screwed like my '88 High Serra. So should I just get a new crank/chainwheel? If so, should I go for matching the teeth or just a decent price? I often have to climb a 1,000' 20% grade in 24/32 or 19.5 gear inches, but as the road is closed, I do 50' or so switchbacks. The rest of the time I mostly ride 34/11 or 80.4 gear inches to avoid the extream ends of the range though riding 24/11 generally an issue as far as my stamina.