Best PF30 to 24mm (HTII) option
04-17-17, 05:34 AM
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Best PF30 to 24mm (HTII) option
Hi,
Has any of you successfully replaced the PF30 bottom bracket with a Shimano HTII compatible one? What has worked best?
I have a 2014 (i.e. previous generation) Stumpy FSR Carbon 29, with OEM Sram PF30 BB and custom OEM Sram 1250 (36/22 double) crankset. I would like to swap these out for a Shimano double crankset (36/22 SLX) and a Shimano HTII compatible BB. I'm considering the Hope PF46 BB (which is a press-fit unit with an internal threaded sleeve that holds the two cups together), which comes in 24mm (i.e. Shimano) version. Another alternative is the Praxis Works BB conversion, but I've read reports complaining about creaking (it seems to work better with BB30 than with PF30). BBInfinite also looks great but is a bit too expensive for me now (and does not seem to have a European distributor either)
But I'm also a bit worried that the standard Shimano double crankset might have a different chainline or axle length from the supposedly "custom" Sram S1250 cranks. Shimanos have a 48.8mm chainline, while the Sram S1250 is presumably 49mm. Sram is the so-called "long spindle" version (with the 15.4mm DS spacer). I'm not interested in switching to a 1x system and 36/22 hits the sweet spot for me, so it is definitely going to be a Shimano double. IF it works.
I would appreciate any helpful input or advice.
Has any of you successfully replaced the PF30 bottom bracket with a Shimano HTII compatible one? What has worked best?
I have a 2014 (i.e. previous generation) Stumpy FSR Carbon 29, with OEM Sram PF30 BB and custom OEM Sram 1250 (36/22 double) crankset. I would like to swap these out for a Shimano double crankset (36/22 SLX) and a Shimano HTII compatible BB. I'm considering the Hope PF46 BB (which is a press-fit unit with an internal threaded sleeve that holds the two cups together), which comes in 24mm (i.e. Shimano) version. Another alternative is the Praxis Works BB conversion, but I've read reports complaining about creaking (it seems to work better with BB30 than with PF30). BBInfinite also looks great but is a bit too expensive for me now (and does not seem to have a European distributor either)
But I'm also a bit worried that the standard Shimano double crankset might have a different chainline or axle length from the supposedly "custom" Sram S1250 cranks. Shimanos have a 48.8mm chainline, while the Sram S1250 is presumably 49mm. Sram is the so-called "long spindle" version (with the 15.4mm DS spacer). I'm not interested in switching to a 1x system and 36/22 hits the sweet spot for me, so it is definitely going to be a Shimano double. IF it works.
I would appreciate any helpful input or advice.
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