Re: Maintenance Manuals

Hobbes@spnb&s.com wrote:
On Sat, 29 Sep 2007 19:46:48 -0700, jim beam <spamvortex@xxxxxxxxxxxxxxx> wrote:

Frank Drackman wrote:
"jim beam" <spamvortex@xxxxxxxxxxxxxxx> wrote in message news:mZSdnW2KsY96yWPbnZ2dnUVZ_gOdnZ2d@xxxxxxxxxxxxxxxx
Ryan Cousineau wrote:
In article <1191039479.922619.176200@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
BigJulie <julianshapiro@xxxxxxxxx> wrote:

sutherland's

http://www.amazon.com/Sutherlands-Handbook-bicycle-mechanics-Sutherland/dp/091
4578065/ref=pd_bbs_2/102-4791940-4852967?ie=UTF8&s=books&qid=1191039436&sr=8-2


On Sep 29, 12:05 am, Mark <mblackwell1...@xxxxxxxxx> wrote:
Well as I am increasingly intrigued by the mechanics of bikes. There
is a lot I just have never taken apart, put back together, and frankly
don't fully understand how things work. I wondered if there is a book
that is accepted as "the book to have on bike maintenance" that shows
pictures and step by step instructions much the way the Chiltons book
does for auto repair.

I'd also be interested in books on bike design. Now I would like to
keep the theory to a practical level. No I have no idea to turn this
into an engineering project. I am already married to an engineer and
the last thing one needs is two engineers in the same house. lol
At a much lower price, Zinn and the Art of Mountain Bike Maintenance (and the similar Road Bike Maintenance) are good Chilton-level books. I'd just get the one for your primary kind of ride, as much of the material overlaps, and the differences aren't liable to catch you out unless you're a roadie and you decide to start doing your own fork maintenance on your MTB.

Sheldonbrown.com seems like it has directions on virtually every mechanical repair known to cycling, so it's almost as good as having your own bike manual.

I make no submission on most bike design books, but regular contributor here Jobst Brandt literally wrote the book
/a/ book.

on bicycle wheels, called "The Bicycle Wheel," and it covers both the theory of wheels and the proper procedure for wheelbuilding.

procedure, yes. theory? some of it is badly awry. spoke tension "as high as the rim can bear" for example is based on a fundamental misunderstanding by the author and that is of the most practical [and costly] consequence to the novice builder - excess tension can cause a higher propensity for rim buckling and directly cause rim cracking. the book should should be amended to specify spoke tension "as determined by the rim manufacturer".
I guess that we all saw that coming...sad


what's sad? having to correct gross error? or being gullible so that having smoke blown up your skirt seems like it's a good thing?

This is NOT torquing a bolt until it starts to strip and then backing off a
little. Stop pretending it is. The phrase "as high as the rim can bear" does NOT
equal "higher than the rim can bear."

you don't understand the problem. because the rim doesn't pretzel doesn't mean it's not at its strength limit. pretzel means yield. but fatigue loading for aluminum is typically 1/3 yield. if spoke tension is close to the limit of gross yield, it surely shouldn't be too hard to understand that point loading is also beyond that necessary to ensure a decent fatigue life - particularly in highly anisotropic materials like rim extrusions where strength is much lower perpendicular to the extrusion axis.

Using the specified tension from the
manufacturer is a convenient, well documented determination of how high a
tension the rim can bear. Not a bad thing. Not necessarily in conflict with the
other.

If you want to keep beating this horse please continue in private, there's
nothing but bones and maggots left and it smells bad. Stop.

ignorance is no excuse. i want the facts corrected so that people stop wasting their money by prematurely destroying their rims with excess spoke tension. what do /you/ want? other than to not be confronted with uncomfortable reality that's you've been misled of course.
.

Relevant Pages

  • Re: MAVIC "MA2" wheel - Am I missing something?
    ... How does one know that one has gone TO the limit the rim can bear? ... Obviously, if it bears xxx units of tension, you don't know if it can bear ... Doesn't knowing the limit of spoke tension COST rims? ...
    (rec.bicycles.tech)
  • Re: Maintenance Manuals
    ... I'd also be interested in books on bike design. ... into an engineering project. ... spoke tension "as high as the rim can bear" for example is based on a fundamental misunderstanding by the author and that is of the most practical consequence to the novice builder - excess tension can cause a higher propensity for rim buckling and directly cause rim cracking. ...
    (rec.bicycles.tech)
  • Re: Maintenance Manuals
    ... I'd also be interested in books on bike design. ... into an engineering project. ... spoke tension "as high as the rim can bear" for example is based on a fundamental misunderstanding by the author and that is of the most practical consequence to the novice builder - excess tension can cause a higher propensity for rim buckling and directly cause rim cracking. ...
    (rec.bicycles.tech)
  • Re: Maintenance Manuals
    ... I'd also be interested in books on bike design. ... higher propensity for rim buckling and directly cause rim cracking. ... book should should be amended to specify spoke tension "as determined by ... The phrase "as high as the rim can bear" does NOT ...
    (rec.bicycles.tech)
  • Re: Spoke tension dropped when tire deflated
    ... angle causes it to contract and squeeze the rim inward. ... and confirmed the theory that the angle of the tire cords ... and thus reducing the spoke tension. ...
    (rec.bicycles.tech)