Advertise on Bikeforums.net



User Tag List

Results 1 to 12 of 12
  1. #1
    i'll probably break it 91MF's Avatar
    Join Date
    Jun 2008
    Posts
    1,656
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    groupset compare

    so i have two early 90s cannondales that were both equipped with shimano 105sc downtube shifted 7-speed. i tore one of these bikes down mid-summer and was planning on getting ridiculous with it but have now decided i just want to ride the thing.

    i have the opportunity to grab, on the cheap, a complete shimano RSX downtube shifted 8-speed group[95ish?] in near mint condition. hubs are laced to mavics. can anyone comment on the shift quality/component quality of the RSX group compared to the, IMHO, near perfect 105sc 7-speed?

    i have read mixed review of the RSX group - some say its early sora[read: junk] and others say it was a great entry group?

    im looking for experience here more than opinions based on things read on the internet.

    thanks in advance.
    bike. throw. #MFDCR

  2. #2
    Senior Member custermustache's Avatar
    Join Date
    Sep 2008
    Location
    Plano, TX
    My Bikes
    1968 Falcon San Remo 1973 Raleigh International, 1974 Schwinn Suburban, 1987 Schwinn High Sierra, 1992 Univega Ultraleggera, 2007 Dahon Vitesse DH7G
    Posts
    780
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Sora isn't junk - I have a great set of SIS Sora 7 speed brifters (2003) that work great, and have for years.

  3. #3
    i'll probably break it 91MF's Avatar
    Join Date
    Jun 2008
    Posts
    1,656
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    i never said that sora was junk, i was saying the implication based on review is that it is old sora and therefore junk, as in, not dura-ace/ultegra/600/etc...
    bike. throw. #MFDCR

  4. #4
    Senior Member Barchettaman's Avatar
    Join Date
    Oct 2008
    Location
    Frankfurt, Germany
    My Bikes
    Focus frankenbike trash find commuter, BP Stealth carbon monocoque TT bike, Leader 720 tt, Quantec CC Cyclosross build, Eddy Merckx Corsa Extra Columbus SLX road bike
    Posts
    1,119
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I have 7 speed RSX, 8 speed RSX brifters on a mix īn īmatch Cannondale, 8 speed 105, 8 speed sora and 9 speed Tiagra, as well as various other mix īnīmatches.
    In my humble opinion they all work very well. Sora most definitely is not junk - itīs just underrated, and therefore fantastic value second hand.

    The single most important factor in getting them all to work crisply is setting them up right, taking the time to make sure everything is 100%, that comes from experience (hard won in my case.....and learning every day)

    I would recommend going for that 8 speed RSX gruppo, if itīs cheap, as it will be a great source of spares in the future. AFAIK the current Shimano 2200 brifters are compatible too if you donīt fancy the DT shifters.

    Hope this helps,
    Barchettaman

  5. #5
    Senior Member RobbieTunes's Avatar
    Join Date
    Dec 2007
    Posts
    15,700
    Mentioned
    50 Post(s)
    Tagged
    2 Thread(s)
    I've had no problems with the RSX brifters I have and have had. What I like about them, over the Sora, is the lack of the thumb shifter, since I ride the drops and the Sora's aren't the greatest for folks who ride the drops.

    My experience with RSX components is with a very smooth triple group. The FD/RD, and 48/40/26 crankset worked flawlessly with the 3x7 brifters. I've only seen RSX brake calipers with an 8-sp setup, and they were very similar to the 105 8-sp (dual pivot) calipers, only the finish wasn't quite as nice.

    Robbie ♪♫♪...☻

    I'm not a doctor, but I watch them on TV.

    1982 Lotus Classique
    1987 D'Arienzo (Basso) SLX
    2006 Cinelli XLR8R-2
    2008 BMC Roadracer SL01
    2014 Wraith Hustle
    2014 Wraith Paycheck (pending)

  6. #6
    Senior Member miamijim's Avatar
    Join Date
    Aug 2003
    Location
    Tampa, Florida
    Posts
    12,097
    Mentioned
    27 Post(s)
    Tagged
    1 Thread(s)
    You'll never notice the between RSX and 105SC. There are differences between the 2 groups but its nothing you'll probably notice.
    WWW.CYCLESPEUGEOT.COM 2005 Pinarello Dogma; 1991 Paramount PDG 70 Mtb; 1976? AD Vent Noir; 1989 LeMond Maillot Juane F&F; 1993? Basso GAP F&F; 1989 Terry Symmetry; 2003 Trek 4700 Mtb; 1983 Vitus 979

  7. #7
    i'll probably break it 91MF's Avatar
    Join Date
    Jun 2008
    Posts
    1,656
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    thanks for the input guys.
    bike. throw. #MFDCR

  8. #8
    sultan of schwinn EjustE's Avatar
    Join Date
    Sep 2009
    Location
    Lehigh Valley, PA
    Posts
    3,594
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Make sure that your frame can accommodate a 8 cog rear freewheel/cassette. If the rear spacing is less than 130mm it cannot...
    -E

    still stuck in the '80s; '70s were good as well, but i severely dislike tubulars.
    I tri...

  9. #9
    DRF aka Thrifty Bill wrk101's Avatar
    Join Date
    Jan 2008
    Location
    The NC Mountains
    My Bikes
    Too many to list, all vintage
    Posts
    18,870
    Mentioned
    71 Post(s)
    Tagged
    1 Thread(s)
    Quote Originally Posted by EjustE View Post
    Make sure that your frame can accommodate a 8 cog rear freewheel/cassette. If the rear spacing is less than 130mm it cannot...
    +1 I just passed on doing a similar conversion to a 1989 Cannondale.

  10. #10
    i'll probably break it 91MF's Avatar
    Join Date
    Jun 2008
    Posts
    1,656
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    early 90s cdales were 128mm rear spacing for that exact reason.
    also: went to get the group tonight... yea, uh thats a RSX 7-speed group...

    passed.
    bike. throw. #MFDCR

  11. #11
    Senior Member oldpedalpusher's Avatar
    Join Date
    Jan 2009
    Posts
    397
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by EjustE View Post
    Make sure that your frame can accommodate a 8 cog rear freewheel/cassette. If the rear spacing is less than 130mm it cannot...
    A 130mm 8 speed cassette rear wheel easily fit my old 126mm frame...

    Each stay only has to deflect a mere 2mm. No need to cold set.


    Greg

  12. #12
    Senior Member oldpedalpusher's Avatar
    Join Date
    Jan 2009
    Posts
    397
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Barchettaman View Post
    I have 7 speed RSX, 8 speed RSX brifters on a mix īn īmatch Cannondale, 8 speed 105, 8 speed sora and 9 speed Tiagra, as well as various other mix īnīmatches.
    In my humble opinion they all work very well. Sora most definitely is not junk - itīs just underrated, and therefore fantastic value second hand.
    +1 on the Sora...

    I'm a real cheapskate when it comes to components, and run Sora hubs, rear derailleur and Altus cantilevers on my road bike...

    ...they all perform flawlessly.


    Greg

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •