• 11-06-2007
    Evil Chocula
    When's the Chumba SS 29er coming out?
    Although I just a bought an XCL (review pending my Bootleg trip this weekend), I am already eager to lust over something else.. so where's that steel 29er frame that's been rumored...... I heard there's some "inside" guys on this forum :D :thumbsup: .
  • 11-07-2007
    dubjay
    I've seen the prototype out on the local trails. I think it may have been spotted at the Fullerton Loop last Thursday actually...
  • 11-07-2007
    Evil Chocula
    Fullerton Loop?! Isn't that where that Bike Gang rides? STR or something?
  • 11-07-2007
    CHUMBAevo
    We are riding the prototypes around right now. Still some debate on the tubing we should use, any suggestions?
  • 11-07-2007
    Evil Chocula
    Hmmm... I'm thinking of a company in Europe.... England actually... could it be... Reynolds?:thumbsup: :D
  • 11-07-2007
    snowdrifter
    Quote:

    Originally Posted by CHUMBAevo
    We are riding the prototypes around right now. Still some debate on the tubing we should use, any suggestions?

    Beryllium :D
  • 11-10-2007
    RAPIT
    Quote:

    Originally Posted by CHUMBAevo
    We are riding the prototypes around right now. Still some debate on the tubing we should use, any suggestions?

    something with some portions of Al and V
  • 11-11-2007
    tkblazer
    saw one of the new proto's 2 weeks ago... its super pimpin
  • 11-11-2007
    MTBRT
    Use 4230 Cromo, cheap and reliable.
  • 11-12-2007
    88 rex
    Any pics of the prototypes?
  • 11-12-2007
    geolover
    Quote:

    Originally Posted by 88 rex
    Any pics of the prototypes?

    Yeah, WHAT THE EFF?

    This thread is worthless without some mutha-effing pics. :madmax:


    :D
  • 11-13-2007
    Evil Chocula
    I vote for:

    1) Steel
    2) Pics
  • 11-15-2007
    rewarder
    CARBALTIMOLY It's kinda hard to get though. :D :D :D
  • 12-30-2007
    Evil Chocula
    Jasoooooonnnnnnnn..... :thumbsup:


    Whats the ETA on this bad boy? I need to satiate my 29er jones by the spring :D .
  • 03-04-2008
    GhisalloWheels
    Any new info?
    Just wondering if anything new has come of the SS 29er?:rockon:
  • 03-05-2008
    IH8MUD
  • 03-05-2008
    NWchumba
    this bike better be steel my friend.

    al on a big bike is just too flexy
  • 03-05-2008
    dubjay
    Quote:

    Originally Posted by NWchumba
    this bike better be steel my friend.

    al on a big bike is just too flexy

    That's a weird thing to say as aluminum frames are generally stiffer than steel, aren't they?
  • 03-06-2008
    RacinJason
    This is correct.
    Aluminum is generally stiffer than steel. Both have unique quality's. :thumbsup:

    Quote:

    Originally Posted by dubjay
    That's a weird thing to say as aluminum frames are generally stiffer than steel, aren't they?

  • 03-06-2008
    theOtherMrT
    Quote:

    Originally Posted by ChumbaJason
    Aluminum is generally stiffer than steel. Both have unique quality's. :thumbsup:

    Aluminum isn't actually stiffer than steel. Steel has a higher modulus than aluminum and as result frame makers use thinner steel tubes analagous to thicker aluminum tubes. This means the cross section of steel tubing has generally has a higher area moment of inertia than a thicker aluminum tube of comparable strength. The higher the area moment of inertia the higher the slenderness ratio - the key factor in what we percieve as stiffness.
  • 03-06-2008
    NWchumba
    science is cool ^

    steel is still real
    it has a better "bounce" you could say
  • 03-06-2008
    RacinJason
    Hmmm interesting.
    After over 20 years of riding and testing bikes and motorcycles I have seen the balance go either way depending on the technology applied.
    In most of the tests the two equal weight frames made of two different materials such as steel and heat treated 6061 T6 aluminum. The steel had a spring like snap back and the aluminum had stiff but brittle feel. The true test is the ride. Who is to say what is better.
    It is a preference. If you want a bike that will not fatigue quickly than look into the Steel frames.
    You must also take into consideration that not all aluminum frames are tube and its not always a fair comparison. I can get a much stiffer frame with hydro formed aluminum closer to the 3 lb range. With steel it would take a lot of work and it would have a lot of flex. I like steel so the weight isn't something that would bother me .
    If you want lighter with flashy welds look at aluminum. either way if the geometry is correct you will be happy. I have been riding an aluminum single speed and I like it.
    I rode the prototype Solo 29er chumba it was great. The steel frame had a nice feel to it also. I just didn't get enough time on it to develop a strong opinion on that bike.


    QUOTE=theOtherMrT]Aluminum isn't actually stiffer than steel. Steel has a higher modulus than aluminum and as result frame makers use thinner steel tubes analagous to thicker aluminum tubes. This means the cross section of steel tubing has generally has a higher area moment of inertia than a thicker aluminum tube of comparable strength. The higher the area moment of inertia the higher the slenderness ratio - the key factor in what we percieve as stiffness.[/QUOTE]
  • 05-15-2008
    GhisalloWheels
    bump
  • 05-16-2008
    duke777
    Raritanium!
  • 05-16-2008
    CHUMBAevo
    I have a prototype that is steel medium in black w/ sliding dropouts if anyone is interested.

    A.
  • 05-17-2008
    Scottandhisdog
    Quote:

    Originally Posted by CHUMBAevo
    I have a prototype that is steel medium in black w/ sliding dropouts if anyone is interested.

    A.

    By reading this thread, I think that people are interested. Go get some pics!