Hello Adam, I agree 100% with Bill and Steve's recommendations. A couple things to be aware of, make sure to put some grease on the puller before threading it onto the crank and to tighten with the adjustable wrench, it's possible to damage the crank arm treads otherwise. Second, the FD may need adjusting since the chainrings may not be exactly at the same locations as with the original cranks.
Good luck, JohnS On Friday, February 16, 2024 at 1:52:24 PM UTC-5 Bill Lindsay wrote: > Generally speaking, anybody who wants to do new mechanical maneuvers, and > has the will to purchase the right tools, by all means go for it. > > To swap out your crank set without swapping the BB, what you need are: > > -pedal wrench > -whatever wrench you need for your crank bolts: Long 8mm allen, 14mm > socket, maybe both > -crank puller, and maybe an adjustable wrench to drive your crank puller > > Assuming you have all the above, absolutely pull your crank off and test > fit the VO. To measure the length of the existing BB a cheap caliper would > be useful. If your existing BB is "too short" your small ring will hit the > frame and if you crank down the crank bolt AFTER you've already crashed > your ring into the chain stay, then you'll do real damage. Aside from > that, any clearance is enough clearance, but crazy close, like 1mm would be > a concern for many. 3mm is ample. > > Once you have clearance, it's up to you to worry about chain line. In > some narrow Q applications the front derailleur throw can be an issue. > > Bill Lindsay > El Cerrito, CA > > On Friday, February 16, 2024 at 10:07:21 AM UTC-8 Adam wrote: > >> Hi all, >> >> A while back I posted about low q, low-range cranks for my Hillborne. >> >> I just ordered one of the VO 46/30s, which seems like a good option at >> the price. I'll use the stock rings first, then tweak them down the road. >> >> A few questions - I'm going to try the install myself--I think--and this >> is my first attempt. >> >> I understand that the VO 46/30 is supposed to be paired with a 118mm BB. >> I have read on here of folks using shorter spindles. I currently have >> either a 113 or 115mm on the Hillborne. I'm assuming the only way to know >> is to remove the cranks and measure? Has anyone here tried a shorter >> spindle on their Hillborne with the VO cranks? >> >> My question - Should I try simply swapping cranks and see how the VO >> cranks do at 115/113mm? If so, what would I be watching for to suggest a >> problem? OR is this a dumb way to start tinkering with cranks? And if so, >> any thoughts on swapping BB vs taking it a shop? (I have great shops >> nearby, but like to gradually learn a few things every so often.) >> >> Thanks! >> >> Adam >> >> -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/e0e9bc30-6d88-4c9c-aded-67d2acee6a47n%40googlegroups.com.
