CS bicycles and cyclist thread II

[ManWearPants]

This is definitely not true. Disc brakes offer better modulation (feel) and I don't see why disc brakes pose any danger over more common V-brakes.

I am thinking of getting a trek dual sport with a disc brake or the FX, which fits my budget. Does disc brakes have a lesser braking effect? I thought it is the other way round??

I am not saying one type of braking system is inferior to another. I am saying for using on bikes for road use, when you can hit 30-40kmph on a straight. E-braking on disc brakes may have a higher risk of the bike flipping. To use disc brakes or V-brakes is really horses for courses. I am just raising a yellow flag of caution.

 

[creampuff]

I am not saying one type of braking system is inferior to another. I am saying for using on bikes for road use, when you can hit 30-40kmph on a straight. E-braking on disc brakes may have a higher risk of the bike flipping. To use disc brakes or V-brakes is really horses for courses. I am just raising a yellow flag of caution.

One can just as easily endo (flying unexpectedly over the handlebars) using V-brakes as much as disc brakes. I have experienced this personally many years ago. If disc brakes are that risky, perhaps you should ask why Italian brand Colnago is offering their flagship C59 road bike in a disc brake version.

If you know little about disc brakes, don't make presumptive statements with little basis of fact.

 

[ArchRival]

All things equal, if you look at the point of application of force on the wheels, the stopping torque by disc brakes is smaller than the stopping torque of V brakes. This translates to better modulation.

There is no advantage of mechanical disc brakes over mechanical V brakes because of cable stretch. However if hydraulic disc brakes are used then cable stretch is eliminated.

Flipping over the bars/endoing/faceplanting happens because of bad braking technique. You are not supposed to grab the brake levers and hold as tight as you can. In the event you need to jam brake, never just apply the front brakes alone. If need be, stand up and shift your weight back. Best is you tap to gradually bring your speed down. This also prevents discs from excessive heating.

That said, i personally prefer good Vs to screwed up discs anyday. Vs used to be generally lighter than disc setups. I've seen mtbs below 9kg. They were almost always specced with Vs to bring the weight down.

 

[ed9119]

one will flip given the right conditions regardless if they are using regular side pull road brakes, center pulls, cantilevers, V's or Disc brakes

Discs are heavy and wheels are dished but the wheels stay cooler and best point for me is ..... you can remove the ENTIRE brake line from Levers, Cables and calipers and plug and play it on another bike with similar sized rotors lmost immediately

 

[ManWearPants]

One can just as easily endo (flying unexpectedly over the handlebars) using V-brakes as much as disc brakes. I have experienced this personally many years ago. If disc brakes are that risky, perhaps you should ask why Italian brand Colnago is offering their flagship C59 road bike in a disc brake version.

If you know little about disc brakes, don't make presumptive statements with little basis of fact.

This info I got from the sales person in 2 different shops selling high end bikes when I quizzed them why their racing bikes do not come with disc brakes. I would assume they know their stuff they are selling.

 

[petetherock]

RIP:
Cyclist dies after accident with bus on Tuas slip road | AsiaOne Ride

 

[ninelives]

RIP:
Cyclist dies after accident with bus on Tuas slip road | AsiaOne Ride

heard from stomp : eyewitness on bus saw the driver hit the man, continue driving, then stop, then alight, then light a ciggy and smoke. totally bo chap....

and the poor man was not even riding, he was pushing his bike and obey the traffic regulation.


i also always ride on road, dont really worry about the cars behind me. but nowadays more and more this kind of irresponsible drivers...

 

[BrokenDown]

This info I got from the sales person in 2 different shops selling high end bikes when I quizzed them why their racing bikes do not come with disc brakes. I would assume they know their stuff they are selling.

Road racing bicycles do not use disc brakes as the speed they are travelling will overheat the small rotors. Rim brakes cool faster than disc brakes. The same reason why you see motorbike roadsters have 2 huge disc brake rotors for their front wheel.

 

[ManWearPants]

An interesting clip on the blind spots of a trailer when it makes the beginning of a turn.

[video=youtube_share;wzL0Kyk4m-8]http://youtu.be/wzL0Kyk4m-8[/video]

 

[wildcat]

Road racing bicycles do not use disc brakes as the speed they are travelling will overheat the small rotors. Rim brakes cool faster than disc brakes. The same reason why you see motorbike roadsters have 2 huge disc brake rotors for their front wheel.

Hello. I don't think that's the correct reason why road bikes do not use disc brakes. It's more because of the stopping power of disc brakes, and how we'd endo if we used those.

 

[ed9119]

Road racing bicycles do not use disc brakes as the speed they are travelling will overheat the small rotors. Rim brakes cool faster than disc brakes. The same reason why you see motorbike roadsters have 2 huge disc brake rotors for their front wheel.

??? i think the logic is the other way around for heat dissipation . heat build up using regular road/v brakes can cause the rim on long descents to get really hot which is not good while disc brakes address this problem at the disc rotors so that the brakes run cooler

most rims today are made of various alloys , carbons , aluminium which have poor heat dissipating properties
and notice why disc brake rotors are mostly made of good old heavy steel instead of some super lightweight material ? better heat dissipating properties and overall strength

stay safe on the road all'

 

[tecnica]

long descend on rim brakes, sometimes will cause flat tires due to the heat generated.

imo, roadies do not need disc brakes due to the following reasons:

1) difference in terrain where they operate, roadies mostly do not need the disc brake modulation and power which is essential to their mtb counterpart.
2) weight issues, disc brakes add a whole load of weight to the bike. keep it light to accelerate and go faster.

i may be wrong but these are the few points which i observed from my cycling time.

 

[andy888]

Reason road bike don't use disk brake is to keep the weight to the minimum. Disk brake are heavier than v brake cause it got more parts.

 

[petetherock]

Cyclist in ICU after hit-and-run | AsiaOne Ride

A sad thing...

 

[petetherock]

Nice to see dedicated storage points for bikes at work.. Asia Square Tower One..

 

[ed9119]

hee hee .... my humble new ride, a steel Fuji Touring . Very relaxed frame geometry

New toy made my hands very itchy last few weeks:
- swapped out the stem from 100mm straight to a 90mm +17deg stem for a more upright position
- swapped out the saddle for a Brooks B17
- swapped out the platform pedals for a pair of XT M785 SPD pedals
- swapped out the rack for a larger Topeak Super Tourist rack
- installed a wireless Cateye Strada bike computer

 

[banana0ne]

hee hee .... my humble new ride, a steel Fuji Touring . Very relaxed frame geometry

New toy made my hands very itchy last few weeks:
- swapped out the stem from 100mm straight to a 90mm +17deg stem for a more upright position
- swapped out the saddle for a Brooks B17
- swapped out the platform pedals for a pair of XT M785 SPD pedals
- swapped out the rack for a larger Topeak Super Tourist rack
- installed a wireless Cateye Strada bike computer

Looks old school frame... Cool

 

[petetherock]

Cyclists can now enjoy 11.3km of dedicated paths in Tampines | AsiaOne Ride

Nice...

 

[manalishi]

hee hee .... my humble new ride, a steel Fuji Touring . Very relaxed frame geometry

New toy made my hands very itchy last few weeks:
- swapped out the stem from 100mm straight to a 90mm +17deg stem for a more upright position
- swapped out the saddle for a Brooks B17
- swapped out the platform pedals for a pair of XT M785 SPD pedals
- swapped out the rack for a larger Topeak Super Tourist rack
- installed a wireless Cateye Strada bike computer

Nice! How much did this project cost? U got the frame locally?

 

[ed9119]

BYX Bikes at River Valley shipped it in for me....90% stock except for the SPD pedals , Brooks saddle and 3T stem (90mm 16% angled ) for fit purposes
All-in about 12+kg with rack + trunk bag ... not light but its a really comfortable and nippy ride

Its cro-moly steel , about $1240 nett to bring in