My experience was that my Hillborne came with a Tange 107mm bb and when it went bad I replaced it with a 107mm Shimano UN300 bb, or at least tried to replace it, but the inner chainring hit the chainstay when I installed the crankset. So I bought a UN300 in 110mm length, thinking I would get 1.5mm on the drive side and the chainring would clear the chainstay. Nope, had to go with 113mm in order to get any add'l spindle on the drive side. So for me, it wasn't so much an issue of nailing the chainline, but of getting the chainring to not hit the chainstay.
On Thursday, May 6, 2021 at 8:45:53 AM UTC-7 [email protected] wrote: > ah, i see it in your case. > i bought wider ones [122 and 127] where the difference was shared on both > ends. > are these measurements shared by other bb makers? i mean, is there a > standard? > also, isn't this a bit fussy, do a few extra mm cause real trouble? that's > an actual question. > i have little experience to offer. > > On Friday, April 30, 2021 at 12:02:49 PM UTC-4 David Person wrote: > >> The table confirms my experience with the Shimano BB's I bought. The >> 68mm BB shell width ones with a spindle width of 107, 109 and 111 all have >> the same length spindle exposed on the right side (20.5mm) with the length >> of the left side spindle receiving the added length from 18.5 to 20.5 to >> 22.5mm. >> >> On Friday, April 30, 2021 at 7:56:16 AM UTC-7 [email protected] wrote: >> >>> i bought two bb's from tange recently of different spindle length. in >>> this case, the added length *was* shared on L and R sides. >>> the last page of this doc shows relevant measurements: >>> >>> https://m.tangeseiki.com/jm/images/com_aedes/tangeseiki/tangeseiki-2017.pdf >>> >>> On Wednesday, April 28, 2021 at 2:03:07 PM UTC-4 David Person wrote: >>> >>>> I had to learn from trial and error what Nick pointed out above. a >>>> 107mm BB was just a bit too short on the drive side for my bike, so I >>>> bought a 110mm only to find out the extra 3mm was on the non-drive side of >>>> the spindle. Had to buy a 113mm, which added 3mm to the drive side >>>> spindle >>>> vs the 110mm. At the time I did not have any luck finding 1.5mm BB >>>> spacers >>>> to split the difference on the 110mm to make it work. >>>> >>>> >>>> On Wednesday, April 28, 2021 at 10:42:30 AM UTC-7 Joe Bernard wrote: >>>> >>>>> You're right. I always forget that. >>>>> >>>>> >>>>> >>>>> On Wednesday, April 28, 2021 at 2:28:05 AM UTC-7 Nick Payne wrote: >>>>> >>>>>> AFAIK, the 107 and 110 will give the same chainline - the extra 3mm >>>>>> is all on the non-drive side. >>>>>> >>>>>> Nick >>>>>> >>>>> -- 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/715bc8df-84bf-4987-98ef-74bac07f2f7an%40googlegroups.com.
