Well, that is why I mention that I have a Silver double. This whole subject of correct bottom brackets for a given crank on a given frame is fascinating to me. I am as curious as everyone else as to if a 113 bb with a Paul crank will work perfectly on a Susie. I just thought my experience might be relevant? I can’t wait to find out what the correct answer is.
Sent from my iPhone I'm a bit confused about discussions of bottom bracket lengths without reference to cranks. If someone has those Paul cranks on their Riv, that's relevant, but unless they're running Paul's and running single speed, it should cause neither worry not comfort. Sugino ATs and XDs require very different cranks on the same frame. A double set up may have chainring issues on the inner ring that aren't relevant for a 1x set up. As Bill said regarding chainrings and has said regarding bottom brackets, this is why dialing in chainline is easier at the _right_ shop or if you have a run on bottom brackets in 2mm increments. That makes initial setup of a particular crank/bottom bracket/chainring/frame combo time consuming, but allows you to dial chainline down to the mm. It sounds like a great project. Good luck! Zach (in ABQ)
I originally had a 122.5 BB on my post-apocalyptic Clem on steroids (lugged Susie) with 2.3 knobby’s and it was “perfect”. I switched to 2.1 GKSK’s and tried a 113mm BB, but the clearance on the granny ring was way too close for my taste(with a 7 speed cassette). I now have a 118mm BB on there and it’s “perfect” again. Mike who has every size of Shimano UN-300 Rossi Spell check changed “Will” to “Williams”.:(
Did the pics come through? Sent from my iPhone
I remember reading the exact same thing. But, I was on the phone with Williams & others at Riv & they wanted to know what tires I was using. I told them 2.6” & they put me on hold. Came back and consensus was to get the 122.5 with the offset. If memory serves I was wanting one of the IRD bottom brackets but they did not have one in stock that they thought would work. Some amateur pics here. I have never had a tire rub but there is not a lot of clearance. BTW, the bike is fantastic. And, I have considered the same 1x that you are looking at. But my 2x7 actually works good.
<image0.jpeg> <image1.jpeg>
<image2.jpeg> Sent from my iPhone Honestly I picked 113mm based on what I read on the riv website under the silver cranks section. It states “On road bikes with straight (normal) chain stays, mount it on a 107-110mm square taper BB (JIS). If your bike has bowed-out chain stays like most mountain bikes, it might need a 113mm" With your 122.5mm bb do you have loads of clearance? Do you have a photo? thank you
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