actually, you got it reversed...

the 25 will drop less hence having a smaller contact patch reducing friction and rolling resistance

i think that statistic doesn't prove the point of performance...

This is a test done on a Schwalbe Durano, not sure who did the measurement but it was featured in velonews


All with frame clearance aside. As you can see, the wattage used on the tires decreases with width. 25mm would be optimal due to the minimal additional weight compared to the 28 and 32mm. Also, the 25mm would still be compliant with the wider aero rims of today and still get quite good aero measurements compared side to side with a 23mm.

in fact, if you read. Zinn mentions that the drop in pressure actually reduces rolling resistance which is very counter intuitive
http://velonews.competitor.com/2012/03/bik...l-faster_209888

the only problem is being the wider tires do ruin some aero efficiencies...


you can see that using the same 303 firecrest rim.. the 23mm does offer better wind cutting performance than the 25mm.. which zipp claims that it over-rides the saving in wattage from rolling resistance reduction...

so, it really depends on how you see it...

on one hand, you get slight comfort improvements and lesser rolling resistance

on the other, you get maybe more turbulent airflow behind the wheels and increase air resistance...

again, you have to weigh your options based on what you ride more...

This post has been edited by butthead: Dec 9 2012, 01:25 AM

u guys really know how to have fun... that is what cycling is all about ... especially foldies...

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Added on December 9, 2012, 12:47 pmits not about the speed... more importantly enjoy your ride...

you dont ride to train for competition rite?

This post has been edited by butthead: Dec 9 2012, 12:47 PM

in terms of airflow or crr?

of course it makes more sense running wider 23mm rims as that allows the tire sidewall to sit more vertically upright as opposed to narrower rims... that should improve the tire to road interface much better theoratically...

all else, a wider 25mm will still roll better especially under a heavier rider... except if you want to consider aero properties

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Added on December 9, 2012, 12:58 pmslow rides and makan makan rides is always the enjoyable rides....

too bad i dont have the patience

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Added on December 9, 2012, 12:59 pmgetting gatal aren't you?

This post has been edited by butthead: Dec 9 2012, 12:59 PM

i still keep in contact with them.. however, logistic problems prevents me from getting it... i like the australia made ones as they are using sapim spokes while US uses DT spokes...

i also still keeps in touch with bikehubstore and they also told me they have gotten in new 23mm wide rims which weighs considerably light... around 480 grams that builds a 1600 grammish wheels depending on what build kit you select...

http://www.bikehubstore.com/category-s/162.htm

my wheel from them is still in running condition with only one broken spoke so far... so, high chances is that i might get it back from them with a wider rim this time and their hubs although unproven to be reliable is quite light and the price is usually quite affordable... a whole set of wheels and some spare parts comes in under the price of a set of Racing 3s...

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Added on December 10, 2012, 10:38 ammorning sun has vitamin d dude...

This post has been edited by butthead: Dec 10 2012, 10:38 AM

as long as you don't get sun burned when you get home...

i use traditional pen and paper...

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Added on December 10, 2012, 2:33 pmthe one that got the cyclist killed? no way...

This post has been edited by butthead: Dec 10 2012, 02:33 PM

strava provided the base for him to indulge in his stupidity in the first place... if they didn't create a KOM event out of the app... it might not have happened... and ironically, he did not die going uphill.. he died going down which is dumb for a KOM competition to take into account downhills... doesn't make sense...

yes, it is not the apps fault... it's the creators fault for having stupid rules for stupid people to exploit... don't endorse the damn thing and let it die...

DANG! that makes you smart then

pen and paper never killed anyone... and if you get mugged, you can stab the mugger with your pencil, and if you are bored... you can make paper aeroplanes out of the paper and fly them all over the place...

greatest invention in history and you guys want to stick to some 2-bit screen that can't even display pamela anderson's knockers as the wallpaper correctly...

i wonder what is with all this data logging nowadays... does it even make sense having this sort of data?

i think it's overkill and we are carrying around personal cancer generators even when we are out riding..

This post has been edited by butthead: Dec 10 2012, 04:16 PM

suddenly saw this video... the reaction of the dude is damn funny...

wat would you do if it happened to you?

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Added on December 10, 2012, 4:40 pmi prefer the A23 helios from the australian site... uses 24/28 spokes and fully built up by them... of course, they mentioned that if i don't want to run sapim cx-ray to cut down the price of the wheel.. they can pair it with different spokes, or hub if i like to and still maintain the same A23 rim...



HR, speed, distance, odometer i thought that is the job of a cateye cacated computer?

This post has been edited by butthead: Dec 10 2012, 04:40 PM

those data would be meaningless if you do not push hard enough...logging is always about charting how long you can hold it at threshold power output to gauge your performance.. the longer you can hold at your threshold, the better it is...

how much power produced is where power meters comes in...

else, i just use mine like miao... see how much mileage i clocked up...

i meant something el-cheapo li tat lar... or a sigma bc2209mhr @ rm400+

imax camela..

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Added on December 10, 2012, 5:47 pmthat is a good one...

This post has been edited by butthead: Dec 10 2012, 05:47 PM

wonder why they did not do a 4 way in case some bastards come and t bone the cyclist

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Added on December 11, 2012, 9:49 am

they got too much time on their hands...

This post has been edited by butthead: Dec 11 2012, 09:49 AM

heard of fakes... never actually seen one before...it could be possible that it is that good that you can't tell the difference and mavis has no authenticity checcker using the wheel serial number

still it is better not to get 2nd hand as it is hard to know what the wheel went through? preferably you save up a bit more and get a totally new one... kh lists the elite at rm2.6k msrp... maybe a bit lower after reduction... bbs sells roughly around rm2k if i am not wrong... and you have warranty with new wheels...

uhh, that looks like an relabeled aksium and some petaling street watch... u tryin to tipu saya atau apa?

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Added on December 11, 2012, 4:55 pmtat one belum fake already got no spare parts... or big chance kena the stolen batch of c24 and c50 from jb

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Added on December 11, 2012, 5:02 pmada omega boh?? i like to be bond, james bond

This post has been edited by butthead: Dec 11 2012, 05:02 PM

mana u pernah nampak the c24 straight pull replacement spokes?

it's definitely a "fat ass do not need apply" type of wheel... the spokes cannot be trusted at all... it "straight pulls" out of the hub body whenever it gets a chance to do so...

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Added on December 11, 2012, 5:26 pmit is not going to be cheap enough for us to fly there and buy rite?

maybe it's stolen shit... or the buggers there buy them for their maids to go pasar??? check with them see got include those front mounted basket FOC or not? then you know why got 2nd hand market...

2nd hand, maybe... new, not much of a chance..



anyways.. always boleh masuk tech-mavic.com to check check the old pictures of the wheels... although friggin small...login with mavic-com and dealer as username and password..

it'll be less of everything except weight, maybe?

actually coming to think of it...weight might be a good gauge.. it should not be more than 20 or 30 grams off the manufacturer claimed weight........

define bomb proof... your definition, mine or SDU?

RM2k for everything is really wishful thinking isn't it... rim tapes not gonna cost much (RM20 per pair) and so does tubes (RM24 - RM30 max)... cheapest tires gonna set you back RM150 per pair (if you like maxxis, RM110 will get you rollin)... all in all should only be a bit over RM200 extra on top of the wheel...

best not to risk things like this... wheels and handlebars are not something to play a fool with... if a wheel collapses or fake carbon bars break.. you are just going along for an un-controled ride into the hospital....

it is going to suck badly saving a few bucks..


This post has been edited by butthead: Dec 11 2012, 05:26 PM

most performance wheels do, but the difference is in the spoke head, it will not sit properly if the head is different

i remember this, try and see if they still have it?

www.baikbike.com/update-megabike-warehouse-clearance-sale/

its hard to cut rm500 rite?