[RBW] Re: WTB: Wide range double crankset
The AT with a 127mm BB is going to have pretty much the same with at the pedal eyes as, for example, an XD with a 107mm BB. The reason for that is that the XD arms bow out about 10mm each from BB end to pedal end, whereas the AT don't bow out at all. The only possible problem with the AT might be if you ride considerably toes-out, in which case you might have a problem with your heels brushing the cranks on each revolution. Nick On Monday, 26 April 2021 at 8:41:04 am UTC+10 Joe M. wrote: > Crank length 170mm. The AT's are really nice. I'm afraid that going with > that wide of a BB may not feel right. Can you folks with experience with > the AT shed some light on this? I'm 5'10 with a PBH of 85. I imagine if I > was taller I may not notice the wide Q. I don't have experience with > anything that wide. -- 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/dfa2eed3-28a5-4a4f-92cb-e5e296e27e3dn%40googlegroups.com.
Re: [RBW] Re: WTB: Wide range double crankset
Joe, I just measured the Sugino AT on a 127mm spindle. I get 153mm without cinching the bolts down. This is just a hand press fit with a gentle tap to make sure they are on straight. Since you want a wide range double, I’m assuming you plan on using the inner ring. By eliminating the inner ring and running a compact double that would allow running a narrower Q I don’t think most modern cranks will improve on that for you. Hope that helps Ray On Sunday, April 25, 2021 at 4:18:43 PM UTC-7 Joe M. wrote: > Ok thanks for everyone's input this is helpful. I'll look into making > these work. > > But if anyone does have a wide range double they'd part with, I'd still be > interested in possibly purchasing it. > > On Sunday, April 25, 2021 at 4:09:55 PM UTC-7 Patrick Moore wrote: > >> Bob; It all comes down to arm flare. I got 160 mm Q with a Sugino XD2 and >> 113 mm spindle; I got a 160 mm Q with a TA Pro 5 Vis and a custom 145 mm >> spindle. >> >> On Sun, Apr 25, 2021 at 5:02 PM Bob Lovejoy wrote: >> >>> I am not expert enough to explain where the differences come from, but >>> different cranks use different bb spindle lengths to get the same >>> configuration. The Sugino AT's just happen to use a relatively long >>> spindle but once installed they clear the chainstays exactly as they >>> should. That said, being a triple, the Q factor is going to be more than a >>> double. >> >> -- 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/356f1d74-7b70-4b1e-abeb-58e3e003964dn%40googlegroups.com.
Re: [RBW] Re: WTB: Wide range double crankset
Ok thanks for everyone's input this is helpful. I'll look into making these work. But if anyone does have a wide range double they'd part with, I'd still be interested in possibly purchasing it. On Sunday, April 25, 2021 at 4:09:55 PM UTC-7 Patrick Moore wrote: > Bob; It all comes down to arm flare. I got 160 mm Q with a Sugino XD2 and > 113 mm spindle; I got a 160 mm Q with a TA Pro 5 Vis and a custom 145 mm > spindle. > > On Sun, Apr 25, 2021 at 5:02 PM Bob Lovejoy wrote: > >> I am not expert enough to explain where the differences come from, but >> different cranks use different bb spindle lengths to get the same >> configuration. The Sugino AT's just happen to use a relatively long >> spindle but once installed they clear the chainstays exactly as they >> should. That said, being a triple, the Q factor is going to be more than a >> double. > > -- 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/a0c79773-40f8-4cc1-b3b7-2cdf0d3208den%40googlegroups.com.
Re: [RBW] Re: WTB: Wide range double crankset
Bob; It all comes down to arm flare. I got 160 mm Q with a Sugino XD2 and 113 mm spindle; I got a 160 mm Q with a TA Pro 5 Vis and a custom 145 mm spindle. On Sun, Apr 25, 2021 at 5:02 PM Bob Lovejoy wrote: > I am not expert enough to explain where the differences come from, but > different cranks use different bb spindle lengths to get the same > configuration. The Sugino AT's just happen to use a relatively long > spindle but once installed they clear the chainstays exactly as they > should. That said, being a triple, the Q factor is going to be more than a > double. -- 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/CALuTfgs_oUCfe3Hax36mPrnFo7cY9fZkP%3D5jZnCa_AqNHZ9ukA%40mail.gmail.com.
[RBW] Re: WTB: Wide range double crankset
I am not expert enough to explain where the differences come from, but different cranks use different bb spindle lengths to get the same configuration. The Sugino AT's just happen to use a relatively long spindle but once installed they clear the chainstays exactly as they should. That said, being a triple, the Q factor is going to be more than a double. Sheldon's BB chart is here: https://www.sheldonbrown.com/bbsize.html (scroll down to the Sugino section for the Sugino AT) I wish there were more Q factors filled in but hopefully there is enough info there to do some comparisons. If you do go with a double, the IRD compact double (46/30) might be on your list... I have that on a Hilsen and it works great. I am sure there are other great options as well. http://boulderbicycle.bike/IRD-Compact-Crank-46-30-assorted-lengths.html Hopefully other AT users (or ??) will chime in with more knowledge and experience... Bob On Sunday, April 25, 2021 at 5:41:04 PM UTC-5 Joe M. wrote: > Crank length 170mm. The AT's are really nice. I'm afraid that going with > that wide of a BB may not feel right. Can you folks with experience with > the AT shed some light on this? I'm 5'10 with a PBH of 85. I imagine if I > was taller I may not notice the wide Q. I don't have experience with > anything that wide. Thanks! > > > -- 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/66645000-6497-4480-a784-b9291dce3866n%40googlegroups.com.
[RBW] Re: WTB: Wide range double crankset
Crank length 170mm. The AT's are really nice. I'm afraid that going with that wide of a BB may not feel right. Can you folks with experience with the AT shed some light on this? I'm 5'10 with a PBH of 85. I imagine if I was taller I may not notice the wide Q. I don't have experience with anything that wide. Thanks! On Sunday, April 25, 2021 at 2:03:25 PM UTC-7 boblo...@gmail.com wrote: > I have had great luck using the IRD QB-95 BB (127.5) with the AT cranks, > at times using a drive side spacer (sorry I do remember but I will guess at > 3-5mm for the spacer). > > > http://boulderbicycle.bike/IRD-JIS-Bottom-Bracket-QB-95-lots-of-sizes-best-bb-option-REGARDLESS-of-cost.html > > The AT's are great cranks if you stay with a triple... and the BB cost is > going to be less than a different crankset. > > Bob > Galesburg, IL > > On Sunday, April 25, 2021 at 2:02:53 PM UTC-5 Ray Varella wrote: > >> What crank length Joe? >> The AT may need a 127mm bb with a +5mm to the drive side. >> There is currently a cup and cone unit on eBay. >> Those ATs are pretty nice cranks, it may be worth sourcing the correct >> bb. >> >> Ray >> >> On Sunday, April 25, 2021 at 10:40:36 AM UTC-7 Joe M. wrote: >> >>> I'm building a Sam and setting it up with a 12-32 8-speed cassette. I >>> have a Sugino AT 24/34/46 that won't fit, even with a 122.5mm BB! It fits >>> as a double but I want more granny gearing! >>> >>> Does anyone have a wide range double that they'd be willing to part >>> with. Ideally it would be 26/42. A Rene Herse or Specialties TA Pro 5 Vis >>> would be the bees knees! >>> >>> Thanks, >>> >>> Joe from Los Angeles >>> >> -- 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/69697170-f6ff-45e9-b510-afbc73718e97n%40googlegroups.com.
[RBW] Re: WTB: Wide range double crankset
I have had great luck using the IRD QB-95 BB (127.5) with the AT cranks, at times using a drive side spacer (sorry I do remember but I will guess at 3-5mm for the spacer). http://boulderbicycle.bike/IRD-JIS-Bottom-Bracket-QB-95-lots-of-sizes-best-bb-option-REGARDLESS-of-cost.html The AT's are great cranks if you stay with a triple... and the BB cost is going to be less than a different crankset. Bob Galesburg, IL On Sunday, April 25, 2021 at 2:02:53 PM UTC-5 Ray Varella wrote: > What crank length Joe? > The AT may need a 127mm bb with a +5mm to the drive side. > There is currently a cup and cone unit on eBay. > Those ATs are pretty nice cranks, it may be worth sourcing the correct bb. > > Ray > > On Sunday, April 25, 2021 at 10:40:36 AM UTC-7 Joe M. wrote: > >> I'm building a Sam and setting it up with a 12-32 8-speed cassette. I >> have a Sugino AT 24/34/46 that won't fit, even with a 122.5mm BB! It fits >> as a double but I want more granny gearing! >> >> Does anyone have a wide range double that they'd be willing to part with. >> Ideally it would be 26/42. A Rene Herse or Specialties TA Pro 5 Vis would >> be the bees knees! >> >> Thanks, >> >> Joe from Los Angeles >> > -- 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/36b7a18b-42b3-480b-90b1-fc7eac7a7f0cn%40googlegroups.com.
[RBW] Re: WTB: Wide range double crankset
What crank length Joe? The AT may need a 127mm bb with a +5mm to the drive side. There is currently a cup and cone unit on eBay. Those ATs are pretty nice cranks, it may be worth sourcing the correct bb. Ray On Sunday, April 25, 2021 at 10:40:36 AM UTC-7 Joe M. wrote: > I'm building a Sam and setting it up with a 12-32 8-speed cassette. I have > a Sugino AT 24/34/46 that won't fit, even with a 122.5mm BB! It fits as a > double but I want more granny gearing! > > Does anyone have a wide range double that they'd be willing to part with. > Ideally it would be 26/42. A Rene Herse or Specialties TA Pro 5 Vis would > be the bees knees! > > Thanks, > > Joe from Los Angeles > -- 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/6272018c-b668-44e6-aabe-5706ca1107f3n%40googlegroups.com.
