looking back at this....


it looks so gay....

some says the allez E5 perform better than low end carbon in term of stiffness and power transfer, so to them, either go for high end alloy (allez E5 or Caad 10, which is only being sold in complete bike) or high end carbon which is in 5 digits figure (or 9999), no point getting a low end carbon frame just because of wanting to get carbon frame.

u r right, dealership is another factor need to consider when purchasing less common brand......

which leads back to my question.... what is defined as perform better? and how is an alloy frame performance quantified...

getting a carbon frame for the sake of carbon is of course not a good thing to do... weight and performance aside.. safety is actually a very big worry as carbon can be very fragile if layed up wrongly....

so, for people who really want "better performance" out of a bike... spend some time to first, understand some composites basics... it is not point saying what is better than what when things are not quantifiable....

i mean, you can't just define everything below a 5 digit figure as a low end frame... if that is the case... even miao's SL3 would be a cheap ass useless bike that is not even worth comparing with the allez e5....the e5 is good... but with fatigue life in factor, you have to think longer to see how long will the goodness last on an alloy frame...

and if you can't feel the difference when a frame has fatigued... then you won't feel a difference whether it is low, mid or high end carbon frames... frankly to say... which totally overturns what is being discussed because at the end, one will just be buying for the sake of buying better stuff...

This post has been edited by butthead: Oct 14 2013, 06:37 PM

ayam hungwee

wow she nom nom a lot!

i like chicks who can eat... what's the fun when you get a chick that dun eat and still get fat on you...

dinner... here i come...

i like some fat @ appropriate places

Which part?

appropriate places that are not appropriate to mention

Any interesting ride tomorrow morning like KKB to Fraser Hill, Klang BKT?

I am interested in PF86 or english thread cos my sram red crankset is GXP version. I would like to reuse what i have as i am not keen to spend 1k plus for bb30 version. Not to mention heard about horror story about creaking in bb30 equiped bike. That why i am looking for bike that have normal english thread or pf86.

Caad 10 and Allez e5 still using bb30. Not PF30 as the spec written.

So for 5k budget should i get an alu bike like caad10/tcr slr or i better off with known carbon frames?

a good system should be built from a good base, then only u will have a trouble free application. what i'm trying to say is, bb30 frame is built around a stringent requirement, to ensure trouble free application. that means the frame shall be built to a high standard in order to receive a precise dimensioned bb30.

minimal tolerance, minimal creaking. that's what the tech write-ups say.

what pf86 does is, it accepts a frame built with less than precise manufacturing standard. i'm not sure how it does, maybe nylon cups to take up imperfections in the bb shell.

ultimately, i've never used any pressfit bbs. i've always used iso threaded. maybe i'm wrong about the pf86. maybe between bb30 vs pf86, u'd better be off with the latter.

as for the frame, maybe cannondale make their bikes to precise standard, since bb30 came from them. or maybe u should go with the giant, since u prefer pf86. either way, both are pressfits and they will creak.

Choices for RM5k bike are quite hard to satisfy my need for proper sized second racing bike Is there current racingbike still use threarded bb other my Ti bike?

This post has been edited by minizian: Oct 14 2013, 11:47 PM

read this over a few times and really understand it.

http://www.bikeradar.com/road/gear/article...-brackets-38220

like it or not, we can say goodbye to major brands with threaded bb. so now, what to do with the pressfits. the article can guide u. and most important, get a reliable mechanic to prep the bb/frame

This post has been edited by miaopurr: Oct 14 2013, 11:57 PM

me...me....me....

klang bkt, but not the riding part

airport, n then recovery nap. minus the riding part prior

if it's creaking problem, you are looking for any form of threaded BB.... not any form of pressed-in bearing BB systems... and technically... threaded BB creaks as well if you are not lucky...

if it's a re-usability problem, it's an adapter problem and adapters do not costs RM1k...

CAAD10 and E5 is concentrated on using a stiffer and lighter 30mm axle because they want to differentiate those frames from conventional alloy ones which they never made to accept the new axles thus making those frames the premium alloy frames... you are considering it because it is better than a standard alloy frame right? not just because it is all dressed up with some fancy lingo...

why CAAD10 and E5 is not using pressfit? hell, i can't answer you accurately but from my second guessing...

1) alloy frames already require machining in the first place (whether pressed in or threaded BB), it isn't any harder to just machine it with tighter tolerances
2) no one is ever going to decide that they want to make their life more complicated (not even me) by putting in a carbon BB shell into an alloy frame

i can however answer you why a carbon frame does not want a conventional pressed-in BB...

1) it is not possible to machine threads onto a carbon BB shell, thus requiring an alloy sleeve molded to the frame
1.1) if an alloy sleeve is molded to the frame, why not make it a threaded sleeve so it can accept conventional cranks?
1.1.1) because no one wants a 24mm axle anymore
1.1.2) and making a shell to fit a 24mm axle is making the shell smaller thus making the entire bottom bracket area smaller and results in a less stiffer frame (technically, yes the bb shell can still be made larger or as large as 30mm axle BB area by wrapping it with more carbon which in turns increases costs and weight...a large bore filled by nothing equals lesser weight)
1.2) molding an alloy sleeve to the frame obviously increases weight (which no one wants)
1.3) machining a sleeve to be accurately bored out to fit BB30 without problems increases costs (which again no one wants)

2) it is not possible or it might be very hard to make full carbon BB (no sleeves) to be exactly 42mm ID on both sides
2.1) possibility of cracking or deforming the carbon shell if you press in something as hard as a metal BB, pressfit cups will deform around the shell or any shell imperfections

in short and more layman terms....

conventional pressed-in
* trying to jam a steel tube down a lemang tube hoping it slides in nicely or without damaging the lemang tube in the first place and still fits without wiggling and jiggling around

press-fit system is
* jamming a playdoh down a lemang tube which is no problem because the playdoh takes the shape of a lemang tube whether it is square, round, diamond shaped or triangular shaped...

why press-fit exists... because some ding dong realized it is too much of a hassle to file and sand down the internals of a lemang tube so that the steel tube can slide in without too much problems and yet still fit snugly...

so, they decided to find a slightly larger lemang tube, playdoh the god damn steel tube and jam it down the larger lemang tube so the playdoh can be the gap filler while the steel tube still slides in...

first of all, sort out your priorities....

why buy the best frame (whether it is alloy vs carbon or 30mm vs 24mm axles) there is and find a reason to downgrade it??? it's like buying a Ferrari and you just decided to just put in an 989cc engine from Perodua just because the V8 is not economical...

This post has been edited by butthead: Oct 15 2013, 04:33 AM

why not you just nap at the airport...