I am surprised by the 113 bottom bracket. For my Gus (similar to Susie?) Riv sent me a 122.5 labeled +1mm drive side. I am running it with the wide/low Silver crank. I have been curious about this since new as I have a lot of crank arm clearance. But, I am running 2.6” Honcho’s and have no tire clearance issues. I could definitely use a narrower bb but not sure how much narrower without having some tire rub? In short, I am very curious to see/hear how this works out for you. Oh yes, mine is a Jim 7 speed cluster. If that matters?
Sent from my iPhone Amazing! Thank you for the responses. I’ll go for the 52mm chainline with a 3mm offset ring. The only reason I thought minus because in pauls video he states minus offset 3 and 6. Here is a clip of the video. Thank you very much for all the great info, feel reassured that i can go and grab a chainring thats accessible for this build.
Bryan
"52 will give you max tire clearance"
52 will give more tire clearance than 49. That's true. 55 would give even more than 52 though, if tire clearance is what one is going for. :)
It depends on what the prime motivators are in the mind of the builder: best possible chain line or best possible tire clearance, or "Good enough" on both.
BL in EC
I’d go with a 52mm chainline and this chainring:
Steel chainrings are just the best. The Susie isn’t sensitive to chainline because of the long chain stays. 52 will give you max tire clearance.
Thank you everyone for suggestions! I have decided to go with shimano 1x12 on my lugged susie. I am still figuring out chainline and which chain ring to get. I posted in another thread but figured i would post it here as well.
I have purchased a white industries 73x113mm BB to pair them up with paul 100% cranks. I am confused on which offset chainring i need to get the correct chain line. When i look at pauls chart its recommending i need -3 or -6 offset to achieve a 49mm or 52mm chain line. Which in todays standards is very odd as most chainrings are 0, 3, 6mm. I am not even able to find any minus chainrings for purchase. Any suggestions on this? I attached a photo of Pauls chart, thank you!
The GRX 822 showed up first and I installed it! I expected a 20g weight savings but it turned out to be more like 60g. The barrel adjuster is also quite nice, and the niggling clacking noise on my bike is now gone. (And to think I was suspecting that the frame was cracking when it was just a rear derailleur pulley going bad!)
On Friday, October 3, 2025 at 9:03:23 AM UTC-7 Piaw Na wrote:
Piaw,
I’m happy you posted this! My 5100 on a commuter lives a hard life. I disassembled, cleaned and greased and still have squeaks. I’ll order new pulleys. Perhaps replacement sealed bearing units?
I ordered both a replacement pulley set and found on eBay the Ultegra level GRX822 rear derailleur which will work as a replacement for the entire derailleur for $80 + tax + shipping. (A new m5100 is $28 or so on eBay, but I figured I can afford to splurge on fancy parts on my most used bike) We'll see which one gets to me first.
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