Advertise on Bikeforums.net



User Tag List

Results 1 to 8 of 8
  1. #1
    Senior Member fusilierdan's Avatar
    Join Date
    May 2008
    Location
    Rockland County, NY
    My Bikes
    Giant TCRC2 2007, Dahon MU P8 2012, GT Avalance 2011
    Posts
    298
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Difference in steel frame material

    I'm looking at getting a new bike for commuting and winter riding. I'm thinking of a steel bike. What are the differences in quality of the diffent type of steel? Most of the bikes I'm looking at are entry level bikes with frame materials of 4130, Reynolds 520, Tange, and some seem to be house brands such as Masi. I'm looking in the $900 - $1200 for a complete bike or about $400-$500 for a frame.

    I looked through some old post comparing Columbus to Tange but that was for bikes from the 1980s

    For what it's worth I have a 1988 Giant Sedona CroMoly Quad Butted frame that I'm using now.

    Thanks

  2. #2
    Senior Member GrayJay's Avatar
    Join Date
    Sep 2009
    Location
    EagleRiver AK
    Posts
    1,230
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    The metalurgy for most any butted steel frame <$500 is going to be 4130 CrMo (Renyolds 520 and most tange tubes ARE 4130 CrMo) but differences such as seamed/seamless tubing, diameter, thickness, butting profile and cold-working the steel can result in significant differences even between CrMo tubes that all conform to the 4130 metalurgy spec. Additionally, further strength can be added by heat-treating steel (such as True Temper VS-HT, Tange Prestige, Reynolds 725). Even more advanced steel metalurgy (such as a stainless steel, columbus niobium or nivacrom, truetemper P3, reynolds 853, dedaccaia 18MCDV6) can be made into thinner tubes but will be above your pricepoint and is overkill for a commuter.

  3. #3
    Senior Member fusilierdan's Avatar
    Join Date
    May 2008
    Location
    Rockland County, NY
    My Bikes
    Giant TCRC2 2007, Dahon MU P8 2012, GT Avalance 2011
    Posts
    298
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thanks for the reply.
    So, Reynolds 520 Butted Chromoly Tubing vs Seamless Butted Chromoly, would imply the seamless is the better quality frame? The example comes from the Raliegh site comparing the Clubman to the Furley.
    How can I tell from a companys web description the quality of the frame?

  4. #4
    Randomhead
    Join Date
    Aug 2008
    Location
    Happy Valley, Pennsylvania
    Posts
    12,749
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    seamed tubing is generally thicker and heavier than seamless, unless it's not. Some of the best tubing made is seamed. If the same company has a less expensive line that is seamed, you can assume it's not as good as that same company's seamless. Comparing across brands is fairly difficult. This whole subject is fairly complicated nowadays, there was a time when it was easy to make generalizations.

  5. #5
    Senior Member fusilierdan's Avatar
    Join Date
    May 2008
    Location
    Rockland County, NY
    My Bikes
    Giant TCRC2 2007, Dahon MU P8 2012, GT Avalance 2011
    Posts
    298
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thanks for the responses. I was hoping this would be easy but...

  6. #6
    Member
    Join Date
    Oct 2009
    My Bikes
    Winter Bicycles
    Posts
    45
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    "Quality", as in the general roundness, straightness and detail of the tube manufacturing is generally going to be similar. If you mean "ride quality" then don't worry about the alloy. In your price range they are all going to be made out of similar steels- it's what they do with the steel that matters. Frame design, fit and features are going to have a much bigger impact on the bikes appropriateness for you then what pipes are in it. Go test ride some bikes and take home the one that meets your needs and its your body. Don't get to hung up on (or even rally worry about) what the little frame material sticker on the seat tube claims.
    --
    Eric Estlund
    Winter Bicycles

  7. #7
    Nigel nfmisso's Avatar
    Join Date
    Mar 2011
    Location
    San Jose, CA
    My Bikes
    1980s and 1990s steel: CyclePro, GT, Nishiki, Schwinn, SR, Trek........
    Posts
    1,073
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by fusilierdan View Post
    ......
    For what it's worth I have a 1988 Giant Sedona CroMoly Quad Butted frame that I'm using now.
    .....
    And why do you want to replace it? What do you expect to gain?
    Nigel
    Mechanical Design Engineer

  8. #8
    Senior Member fusilierdan's Avatar
    Join Date
    May 2008
    Location
    Rockland County, NY
    My Bikes
    Giant TCRC2 2007, Dahon MU P8 2012, GT Avalance 2011
    Posts
    298
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by nfmisso View Post
    And why do you want to replace it? What do you expect to gain?
    I'm looking to change some of the features on the bike. It's used it for commuting and would like to add disk brakes, drop bars and go with 700 cc tires. I would keep this bike as a back up commuter. I like it and it rides well but I feel the need for a change.

    Thanks.

Posting Permissions

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