-
Unsurprisingly, you're wrong.
Unsurprisingly I am not wrong.
The maximum braking is just as the wheel is locking. With more rubber this point is higher due to larger amount of grip and with a better brake the point could actually be reached.
If the road bike brake cannot get close to locking up the bigger tyre then it is not providing the maximum braking.And the lifting the back wheel comment is again only because people choose to ride a road bike where that can happen. If really interested in shortest stopping distance then that would not be the best choice of bike.
Oh, and remember it is not always dry. In the pissing rain you still think your road race bike with rim brakes and 23c tyres is going to stop as well as a disc brake monster tyred thing?
-
Unsurprisingly I am not wrong.
The maximum braking is just as the wheel is locking.
You're wrong, and you're so stupid it's barely worth arguing. Wheel locking is only the limit when nothing else constrains the maximum deceleration. On a solo bicycle, the high centre of gravity and short wheelbase means that the thing will tip before it slides. Feel free to keep braking on dry Delugrip well past the point where tipping commences in your search for the slide which you seem so sure will be the limit, the resulting endo and face plant is unlikely to reduce your IQ any further.
-
You're wrong, and you're so stupid it's barely worth arguing. Wheel locking is only the limit when nothing else constrains the maximum deceleration. On a solo bicycle, the high centre of gravity and short wheelbase means that the thing will tip before it slides. Feel free to keep braking on dry Delugrip well past the point where tipping commences in your search for the slide which you seem so sure will be the limit, the resulting endo and face plant is unlikely to reduce your IQ any further.
The only constraint is the fact you are riding a bike with a high centre of gravity. If you road a bike with a low centre of gravity and longer wheelbase then it would remove the constraint and you would be at the wheel locking point as the limit.
Are you saying that the shortest braking distance on a bicycle is on race style road bike with caliper brake and 23c tyre?And no need to start with the stupid and low IQ comments please, they are beneath you. And for the record my IQ is 143 which is fairly good thank you.
You are not the only person on the forum with any form of intellect, however much you think you are :-) -
Unsurprisingly, you're wrong. Once the back wheel is off the ground, you can't brake any harder.
No hes right. Although, but not because of tyre size, but because of the point at which the back wheel lifts.
Because of the weight of the cyclist is placed further forward on a road bike, the back wheel will lift sooner (ie. with less braking force).
-
According to the equation
Braking in a mountain bike is much better because of tyres and weight reasons.
-
According to the equation
Braking in a mountain bike is much better because of tyres and weight reasons.
or diagramtically.
Resulting from....
-
That's a better way of illustrating it; still a bit sleepy!
-
Careful guys, last time I mentioned physics on this forum, some bloke called torpid construct threatened to come round to my house and beat me up!
You have been warned...
By the way, kerley, tester did mention the lower center of gravity and longer wheelbase point, up there. Best to make site you read the posts of the person you are debating with.
As for you, tester, you can surely make your points without insults?
Carry on.
-
mashton, yes I did read the points about lower centre of gravity and longer wheelbase. And that is why those with a real interest should get their recuments out. With wide tyres and disc brakes obviously.
I agree with tester that a brakeless rider simply cannot stop as quickly as a rider with brakes and can't understand anyone who says they can. I have ridden brakeless myself for many years so know what I am doing but I could still stop more quickly with a brake.
The reason I don't use brakes is that I am either off road or on road going slowly (due to low gear needed for off road)
When I was into going as fast as possible and personal bests and all that I used a brake.A bit of arguing for the sake of it really as I know that a road bike stops plenty quicky enough...
-
A decent rider without brakes is still safer than 99% of the fairweather bike users out there with helmets, four brakes, hi-viz jock strap and airbags.
-
A decent rider without brakes is still safer than 99% of the fairweather bike users out there with helmets, four brakes, hi-viz jock strap and airbags.
....and throwing yourself down a flight of concrete steps is still safer than a skydiver with all the equipment, but no knowledge, doing a sky dive........
goes to find some steps to face plant down
-
....and throwing yourself down a flight of concrete steps is still safer than a skydiver with all the equipment, but no knowledge, doing a sky dive........
goes to find some steps to face plant down
tl;dr
-
...and eating undercooked chicken is still safer than eating poisonous fish prepared by a chef with all the right equipment but little skill......
goes to buy some chicken
-
the weight of the cyclist is placed further forward on a road bike,
but higher on a mountain bike. The difference in the angle from contact point to CG is negligible. Of course there is some variation - XC bikes are more tippy than DH bikes, USWB time trial bikes are front loaded, touring bikes with long front ends much less so, but these are all quite small differences, amounting to a variation in limiting deceleration of only about 10% either side of the mean. It is not possible to say that* all mountain bikes can stop quicker than all *road bikes. Frame size and rider weight disposition probably make more difference than generic bicycle type.
JordanD
edscoble
TheCrane
kerley
gbj_tester
hael
Sammy
Smallfurry
Crispin_Glover
mashton
Balki
-
Post a reply
About
Gear ratios for no brakes riding...
Posted by
@Junior_Bruce
not aimed at you man dont worry. more of an announcement to everyone