Hi All
I acquired some Sram Apex road parts (Shifters and derailleurs) in a box of parts I bought. I'm trying to work out how many speed they are. I can't see any serial numbers on them. They're clearly not a recent model though, so I guess not 11 speed. Did Apex ever come in 9 speed? Any other way of telling the number of speeds? Unlike Shimano you can't just measure the number of clicks.
Cheers
Sram Apex question
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- Duck!
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Re: Sram Apex question
Postby Duck! » Sun Oct 08, 2017 11:03 am
Apex is 10-sp. SRAM never made 9-sp. road gear. Anything 11-sp. will have a "22" suffix.
I had a thought, but it got run over as it crossed my mind.
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Re: Sram Apex question
Postby eeksll » Sun Oct 08, 2017 2:02 pm
curious, why is that?rtnicho wrote: Unlike Shimano you can't just measure the number of clicks.
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Re: Sram Apex question
Postby queequeg » Sun Oct 08, 2017 10:26 pm
SRAM has Overshift protection, so when you get to the end of the cassette, you can still keep clicking away, but it is actually the ratchet just doing a half shift and dropping back. Kind of nifty. SRAM’s solution to the fork disk.eeksll wrote:curious, why is that?rtnicho wrote: Unlike Shimano you can't just measure the number of clicks.
'11 Lynskey Cooper CX, '00 Hillbrick Steel Racing (Total Rebuild '10), '16 Cervelo R5, '18 Mason BokekTi
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Re: Sram Apex question
Postby Duck! » Sun Oct 08, 2017 10:40 pm
It's related to the way the Double Tap leapfrogging ratchets work; I don't know if it's a specifically intended trailt, but when you hit the first gear position & try to shift to another lower gear that isn't there, the first-stage ratchet will initially release, then the second ratchet will pick up the slack & push back to the low gear position. Of course at the other end the first-stage release won't engage because the shifter is already fully released. The two-stage ratcheting makes click counting a little trickier, but there is a distinct change in shifter feel at both ends of the range, so you can still work out the number of gears.
I had a thought, but it got run over as it crossed my mind.
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