Daniele, I will agree that the most cost efficient choice is to buy a new bike. However, I am interested in your enthusiasm in trying to build a bike. If you would like to look into this project further definitely email me. [email protected]
Chad
On 11/02/10, Fastest Fat Kid <[email protected]> wrote:
it's going to take you a very long time to build a frame and i can't
believe that you could go lighter than the frames todd and I are
riding. An incredible amount of R&D goes into which direction the
carbon is layed up and where it is placed. Our top tubes are so thin
that you can feel deflection when you press on them with your finger
while still maintaining stiffness that will rattle the teeth out of
your head if you ride it wrong. Go buy a bike and sell your
Mongoose. Some day when you're and old dude you can build a bike when
you have the time to devote to the project.
On Nov 2, 1:22 am, "Daniele Littera" <[email protected]>
wrote:
> Thanks Zerbe! I was waiting your answer.. since I know you worked with
> cannondale..
>
> Your idea was my third option (that I forgot to write) buy a production
> bike..still hardtail for 1K$... and then use the mongoose for this
> project... but with a longer term... may build a sort of light mtb for
> cyclocross..where there's less fatigue and smaller loads on the frame
>
> At this point I think it is the best idea....
>
> I'm not too much worried about the building of the jig and the frame..
> already done this back in Italy for a formula race car with a precision of
> 1mm over 2m of car...
> I m most worried to understand the dimension of parts ( i.e. the diameter of
> the bearing of a good crank or the bearing of the fork), where I have really
> no idea...
>
> It is evident.. that the fun it is either the construction of the frame and
> ride it!
>
> ---
> Daniele Littera
>
> -----Messaggio originale-----
> Da: [email protected] [mailto:[email protected]] <[email protected]]> Per
> conto di Jonathan Zerbe
> Inviato: martedì 2 novembre 2010 0.38
> A: [email protected]
> Oggetto: Re: [WVU Cycling] Homemade Carbon Fiber MTB!
>
> Sounds like a terrible idea. First off, its alot more expensive and a huge
> pain in the ass to build a bike from frame up than it is to buy a whole
> production bike (this goes for you downhill guys too). Trust me on this
> 100%. The other considerations are knowing what to do with the jig,
> especially when it comes to alignment of the bottom bracket and rear
> dropouts. It may be strong enough but the wheel could be crooked or the
> shifting/chainline wont work. Even big companies screw this up from time to
> time. Anyway, by the time you get all this correct you could of bought a
> sweet production bike and be riding it every hour you would have spent
> building your own frame (which I assume is alot).
>
> I bet Cannondale aluminum frames are lighter than 3.7 lbs too.
>
> Sorry to kill your dream but if you really wanted to do this buy a whole new
> bike first then you at least have something to ride while you take on this
> project. Also as a person who has been riding for many years, I often dream
> about getting a custom geometry bike, and despite having ridden alot of
> bikes, I still dont know what exact geometry I would want.
>
> This hits me at a sore spot that grew working at Cannondale and having to
> deal with things like this. You learn more by riding bikes then you do by
> reading forums.
>
> On Tue, Nov 2, 2010 at 12:11 AM, Daniele Littera <[email protected]>
> wrote:
>
> > Hi guys,
>
> > I know that it can be something very funny to read or even think
> > about, the largest companies invest milions of dollar in R&D for
> > lighter and stiffer models. but it not as difficult as it appear!
>
> > and more important I have not the target to build the lighest and
> > stiffest frame ever!
>
> > I already worked with carbon fiber with epoxy resin, it just needs a
> > little bit of experience, but everybody really can do it!
>
> > having said that, this is my plan: build an homemade hardtali MTB!
>
> > I just took the inspiration from this amazing guy:
>
> > the step-by-step workhttp://www.bmeres.com/carbonframe1.htm
>
> > and the final result http://www.bmeres.com/carbonframe.htm
>
> > for a total weight of 3.7 lbs, using 9 and 11 layers of carbon fiber
> > fabric (more o less 7 mm of thickness)
>
> > I remember that i don't care to make it extremely light... I want it
> > to last! I will be ok even if it will weigth 5 lbs!
>
> > i'm driven to do this for a lot of reason.... i have a shitty bike (
> > very heavy and walmart style).. it is so interesting to build a bike
> > on my own!..it's cheap have an awesome light bike and possibly very
> > performing!
>
> > But obviously I lack of exeprience in MTB parts and technique! this is
> > where all of you guys could help me!
>
> > My first idea is basically to remove all the parts from my actual
> > bike. Disassemble from the frame the head tube , the rear drop-outs
> > and the BB Shell. These parts will be integrated in the new frame in
> > order to make easier the assembly and do not built these parts from
> > scratch!
>
> > I'll let you know with more details the characteristics of all the
> > parts that I have on my bike, like diameter of the crank.. type of
> > derailleurs.. and bla bla bla..
>
> > Instead the second idea is to get rid of the bike on craiglist and
> > get money for that(except the hayes hydraulic brakes and the fork,
> > restoring the original parts), and buy new and used parts, but with
> > better quality like the crank, the gears, derailleurs, shifter wheels
> > and bla bla bla
>
> > obviously if someone has extra parts and doesn't know what to do with
> > I could buy them...
>
> > now, what do you think? In your opinion is it better the first or
> > second idea???
>
> > I want to clarify that I dont want at this point to design a complete
> > new and revolutionary bike.. but I just want to built an easy frame,
> > with the geometric dimensions based on an actual hardtail frame, like
> > more or less the bike of Duncan or Todd.
>
> > Moreover, before even start to buy the carbon fiber structural
> > simulations will be done to verify that the structure can hold the
> > load ( i will use the european standard, cause i didnt find the
> > american ones). It will be an home made frame.. but under a rigid
> > engineering design process!!!
>
> > the cost of the frame will be around 400$ considering all the
> > materials.
>
> > I strongly ask for any kind of comments, critics, suggestions, help
>
> > thanks guys!
