7-speed Sora STI compatibility with 105 RD/FD
02-02-09, 01:07 PM
#1
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7-speed Sora STI compatibility with 105 RD/FD
Hi,
I got an older road bike with a full 105 2x7 groupset, complete with downtube shifters. I have the opportunity to buy a pair of 7-speed ST-3300 Sora STI brifters in great condition, complete with downtube cable stops. The left brifter is for a double crankset and has trim clicks.
I don't hate downtube shifters, but I'm 6'2" and I have a 61cm frame with a long stem and headtube, so the shifters are pretty far away from the bars.
So, I was wondering if the Sora brifters would be compatible with my 105 RD and FD.
Thanks!
I got an older road bike with a full 105 2x7 groupset, complete with downtube shifters. I have the opportunity to buy a pair of 7-speed ST-3300 Sora STI brifters in great condition, complete with downtube cable stops. The left brifter is for a double crankset and has trim clicks.
I don't hate downtube shifters, but I'm 6'2" and I have a 61cm frame with a long stem and headtube, so the shifters are pretty far away from the bars.
So, I was wondering if the Sora brifters would be compatible with my 105 RD and FD.
Thanks!
02-02-09, 01:13 PM
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yes for RD, maybe for FD.
the cable pull ratio for the FD might not match up properly.
the cable pull ratio for the FD might not match up properly.
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Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
https://sanfrancisco.ibtimes.com/arti...ger-photos.htm
02-02-09, 07:22 PM
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Should work fine. I did basically the same upgrade on a 3x7 105 equipped 1992 Trek 1420 swaping the downtube shifters for 7-speed RSX brifters. No problems.
02-05-09, 07:16 PM
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Works fine on my 1990 Specialized Allez... Flawlessly
