Advertise on Bikeforums.net



User Tag List

Results 1 to 13 of 13
  1. #1
    mamoose124
    Join Date
    Aug 2009
    Location
    Gordonsville, VA
    My Bikes
    Raleigh Seneca Mountain Tour.
    Posts
    11
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Should I purchase a new rear derailleur or . . .?

    Thirty years ago, I purchased a Raleigh Seneca Mountain Tour Bike. I think it is a modest, basic mountain bike. I used it to get in shape but hung it in the barn after about three years. I am now 72 and want to get back in shape. I'm telling you this to let you know I'm unlikely to be a competitive mountain biker. I had the local bike shop mount new tubes & tires, and tune up the bike. I have one problem. I don't like the Suntour XC Sport 7000 rear derailleur. It tends to skip rear chain rings when going up hill. My rear speed cassette has six chain rings, the front crankset has three sprockets. Would it make sense to invest in a more recent rear derailleur (and front derailleur) or should I simply clean the rear cassette chain rings and derailleur, adjust everything, and quit griping. What do you think?

  2. #2
    Map maker cbchess's Avatar
    Join Date
    Feb 2008
    Location
    Richmond,VA
    My Bikes
    Ventana El Ciclon, Walt Works 29er, Specialized Enduro (fixed up for my son).
    Posts
    728
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    you could buy a new cassette and a new rear D while you are at it get a new shifter -and move up to 7 speeds. BUT...

    30 years ago is a Loooong time for mountain bikes. you might do better to find a used bike that is just a few years old with less problems - it would probably weigh 20 pounds less that your old bike.

    you could fix up your old bike but My personal opinion is your money would be better served buying a modest modern bike.

  3. #3
    Elitist Troglodyte DMF's Avatar
    Join Date
    Jun 2006
    Location
    Dallas
    My Bikes
    03 Raleigh Professional (steel)
    Posts
    6,896
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    It's very doubtful that the problem is the rear derailleur. (If it is, it probably just needs lube.)

    If the RD is adjusted correctly and the hanger isn't bent (both things that the shop should have checked), then the problem is probably chain and/or cluster wear: a new chain on the old worn rear cluster, or both just worn out. (Did your shop install a new chain?)

    Take it back to the shop, tell them it's skipping under load, and ask them to check:
    • RD Hanger alignment
    • Chain wear
    • Rear cluster wear
    • That the shift cables operate freely
    • That the RD parallelogram is not binding
    • That the rear axle isn't bent

    This shouldn't cost you since they should have been checked in the previous tune-up.

    An outside possibility is a bent frame, but I gather you don't jump the bike all that much.


    Ride on!
    Stupidity got us into this mess - why can't it get us out?

    - Will Rogers

  4. #4
    Great State of Varmint Panthers007's Avatar
    Join Date
    Sep 2008
    Location
    Dante's Third Ring
    Posts
    7,481
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by DMF View Post
    It's very doubtful that the problem is the rear derailleur. (If it is, it probably just needs lube.)

    If the RD is adjusted correctly and the hanger isn't bent (both things that the shop should have checked), then the problem is probably chain and/or cluster wear: a new chain on the old worn rear cluster, or both just worn out. (Did your shop install a new chain?)

    Take it back to the shop, tell them it's skipping under load, and ask them to check:
    • RD Hanger alignment
    • Chain wear
    • Rear cluster wear
    • That the shift cables operate freely
    • That the RD parallelogram is not binding
    • That the rear axle isn't bent

    This shouldn't cost you since they should have been checked in the previous tune-up.

    An outside possibility is a bent frame, but I gather you don't jump the bike all that much.


    Ride on!
    ---------------------------------------------------------------------------------------------------

    +2

    And I'd suggest you take it to a shop to get this work done - if you're not a bike-mechanic. You may need your derailleur-hanger aligned. The RD cleaned and lubed. You freewheel/cassette and chain replaced. And the wheel(s) inspected for hub-problems, etc.

    If you can do this and know your stuff - Tally Ho! If not - go to a good bike-shop.
    How do you keep an idiot in suspense?

  5. #5
    Senior Member
    Join Date
    Feb 2005
    Location
    Oklahoma
    My Bikes
    Trek 5500, Colnago C-50
    Posts
    9,183
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Panthers007 View Post
    ---------------------------------------------------------------------------------------------------

    +2

    And I'd suggest you take it to a shop to get this work done - if you're not a bike-mechanic. You may need your derailleur-hanger aligned. The RD cleaned and lubed. You freewheel/cassette and chain replaced. And the wheel(s) inspected for hub-problems, etc.

    If you can do this and know your stuff - Tally Ho! If not - go to a good bike-shop.
    +3
    Derailleurs get blamed for a lot of problems that originate somewhere else. Derailleurs are some of the most dependable components on a bike.
    DMF said it right.

    Al

  6. #6
    Bianchi Goddess Bianchigirll's Avatar
    Join Date
    Apr 2009
    Location
    Camp Hill, PA
    My Bikes
    Too many to list here check my signature.
    Posts
    20,552
    Mentioned
    46 Post(s)
    Tagged
    1 Thread(s)
    is Suntour XC Sport really 30 years old? is this like your bike? http://www.mombat.org/1987_Raleigh_Seneca.htm I would look for a suntour 6 spd freewheel and a new chain.
    Bianchis '87 Sport SX, '90 Proto (2), '91 Boarala 'cross, '93 Project 3, '88 Trofeo SOLd, '86 Volpe, '89 Axis SOLD, '79 Mixte SOLD, '99 Mega Pro XL Ti SOLD, '97 Ti Megatube, , '90 something Vento 603,

    Others but still loved,; '80 RIGI, '80 Batavus Professional, '87 Cornelo, '86 Bertoni (sold), '09 Motobecane SS, '98 Hetchins M.O., '09 K2 Mainframe SOLD, '89 Trek 2000, '?? Jane Doe (still on the drawing board), '90ish Haro Escape

  7. #7
    Senior Member Grand Bois's Avatar
    Join Date
    Mar 2005
    Location
    Pinole, CA, USA
    Posts
    15,444
    Mentioned
    15 Post(s)
    Tagged
    0 Thread(s)
    There were no mountain bikes 30 years ago.

  8. #8
    mamoose124
    Join Date
    Aug 2009
    Location
    Gordonsville, VA
    My Bikes
    Raleigh Seneca Mountain Tour.
    Posts
    11
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Thats the bike

    Could be my bikes twin. Exactly the same bike.

  9. #9
    mamoose124
    Join Date
    Aug 2009
    Location
    Gordonsville, VA
    My Bikes
    Raleigh Seneca Mountain Tour.
    Posts
    11
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Really!?

    I could be a year or two off on the purchase date of my bike. I'm now 72 years old and I believe I purchased that bike when I was 42. However, it could have been when I was 44. Still, that is 28 years ago.

  10. #10
    mamoose124
    Join Date
    Aug 2009
    Location
    Gordonsville, VA
    My Bikes
    Raleigh Seneca Mountain Tour.
    Posts
    11
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    OK. My alleged mind is malfunctioning. Take a look at Bianchigirll's post above. The Raleigh Seneca was purchased in 1987 ( that is when the bike was made) when I was 50 years old. Twenty-two years not 30. I stand corrected. Anyway, thanks for the advise. I guess I just wanted a new bike. I purchased an Avalanche 1.0 GT All Terrain w/ Shimano Deore Shifters and Shimano SLX rear derailleuer on Saturday. Very sweet. Had great fun riding this morning.

  11. #11
    Elitist Troglodyte DMF's Avatar
    Join Date
    Jun 2006
    Location
    Dallas
    My Bikes
    03 Raleigh Professional (steel)
    Posts
    6,896
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Now don't give up on your old bike. Still a lot of life left in it. Get it fixed and keep as your spare. You'll need it some day.
    Stupidity got us into this mess - why can't it get us out?

    - Will Rogers

  12. #12
    mamoose124
    Join Date
    Aug 2009
    Location
    Gordonsville, VA
    My Bikes
    Raleigh Seneca Mountain Tour.
    Posts
    11
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by cbchess View Post
    you could buy a new cassette and a new rear D while you are at it get a new shifter -and move up to 7 speeds. BUT...

    30 years ago is a Loooong time for mountain bikes. you might do better to find a used bike that is just a few years old with less problems - it would probably weigh 20 pounds less that your old bike.

    you could fix up your old bike but My personal opinion is your money would be better served buying a modest modern bike.
    ++++++++
    That is what I did. I went to a couple of local bike shops, spent a couple of days riding different bikes and purchased a Avalanche 1.0 GT All terrain with the SR Suntour Mag32 suspension fork, Shimano Deore shifters, Shimano SLX rear derailleur, Shimano Deore front derailleur, and a nine chain ring rear cassette. I have been riding it now for a couple of weeks. Sweet! Much smoother shifting than my previous bike which was my main complaint about the old bike (probably just the difference between six and nine chain ring rear cassette).

    I will keep you all posted on my progress . . . weight loss, leg strength, endurance, etc.

  13. #13
    mamoose124
    Join Date
    Aug 2009
    Location
    Gordonsville, VA
    My Bikes
    Raleigh Seneca Mountain Tour.
    Posts
    11
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    keeping the Original Raleigh

    Quote Originally Posted by DMF View Post
    Now don't give up on your old bike. Still a lot of life left in it. Get it fixed and keep as your spare. You'll need it some day.
    Yes, I am keeping the old bike. It is really in good shape as I took good care of it. If the truth were known, I just wanted to upgrade to a new bike with new technology. Did that . . . Results are excellent.

Posting Permissions

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