I have read the RD2( rd meaning road-130mm bcd), is cold forged, though some just say forged, which is the same case for the XD(which signifies a 110 bcd , with 74 bcd for the triple).
Honestly, cold forging does not mean better or worse, the quality/grade of the aluminum, the shape and just how it is made is what matters. Frankly, I don't think they are very good cranks at all regardless, from my experience. I recently purchased a pair of Origin8 110 double crank arms and I notice a diference in stiffness compared to the XD they replaced. Plus no silly hidden bolts. The crank bolts have not loosened after first tightenening, like the old dàys I remember before the XD when cranks bolts stayed cranked. If anyone is looking for a decent 110 double for not a lot of $$ I would recommend those. They may be marketed as bmx, single speed or something but they are just regular 2 ring 110 cranks, use a 107mm cartridge bb. On Saturday, November 19, 2016 at 11:04:16 PM UTC-5, BSWP wrote: > > Really, the RD cranks are of inferior quality? Can anyone else comment on > that? I have been looking to RD for my new IGH build, need only a single > chainring and not needing a protector ring. Plus, I need a 54mm chainline. > > - Andrew, Berkeley > > On Friday, November 18, 2016 at 10:35:26 AM UTC-8, Jack Doran wrote: >> >> I love Sugino cranks but man trying to get a run down on what's what from >> that company will drive you to drink. >> >> As far as I know, the XD2 (also called the XD Pro, I believe, and have >> the Sugino crown logo) only come already set up as a double or triple. The >> RD usually comes as a single and is less expensive, but I think I've seen >> just the arms for sale. I believe the RD cranks are melt forged, which >> makes for a slightly lower quality aluminum. This is totally anecdotal, but >> I rode an RD for a year as a SS and the spider kept getting slightly out of >> true until I just gave up on them and went with something else. >> >> The photo on the Outside Outfitters page advertising XD cranks looks like >> an RD or Alpina to me, but it's possible they're using an incorrect stock >> photo and it's an XD after all since they list the correct BCD's on the >> double and triple.* >> >> Finally, there is the Mighty Tour, which is available to purchase with >> just the arms, but which is Sugino's most expensive offering (not such a >> great deal now that the Yen has picked up). I imagine it's because they are >> made of 2000 aluminum, which is light and super durable. >> https://alexscycle.com/products/sugino-mighty-tour-pcd110-crank-1 >> >> **A warning about Outside Outfitters. I've tried to purchase products >> from them on several different occasions only to be told that the items are >> out of stock. The problem is that they charge you at the time of purchase >> instead of when they ship it out, and I had to wait nearly two months after >> hounding them with phone calls and emails to get my money back.* >> >> >> >> >> >> >> >> -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
