On my conversion I have some old crappy road cranks/crankarms, etc w/ a 3/32" chain. My chainline isn't perfectly straight, and there's a slight grinding noise that I'm assuming is coming from that. (I guess it could be the chain being too tight as well, but I'm pretty sure that's ok.)
So, my question is, what would be the most straightforward way to upgrade my whole drivetrain?
I don't have a ton of money, so I can't go all out on some bling bling cranks, etc...
Something like Sugino RD's (what's the diff. between RD's and XD's?)or the IRO cranks are in my range.
Are those not too bad? Decent? Ok? How do the two compare?
Or are there any other cranksets that around that price range and of better or comparable quality?
Oh, and right now I'm running 42x16, which isn't too bad, but I could probably handle something a little higher than that. Any suggestions?
I'd say go with the TA crankset, simply because it's gorgeous, uncommonly seen, and because TA only makes really nice parts and has been doing so forever. Also, TA is known for making really nice chain rings. I'm sure the 75s are great, but just aren't as nice. And for 2 bills, I couldn't live with an okay looking crankset.
Another option, at that price, would be an old DA (square taper, not octalink) track crank, supposedly very stiff. Harder to find NOS, and I would hesitate to spend real money on used cranks.
As for mechanical problems, you should be fine if you've got a decent chainline, clean chain, well adjusted BB, and properly torqued chainring bolts.
the RDs use a 130mm chainring, the XDs use 110. i have the XDs, and they are okay? im no crank expert. one of the spider arms is behind the crank arm, im not sure why. maybe this is what makes it a 'compact' crankset. go with whichever is cheaper/matches your bike better/if you prefer X over R