Originally Posted by An old Guy .
Try to stay on the subject of the question. I do.
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As to your comment: The quickest way to stop a bicycle is to do a bunny hop, while in the air lock the brakes and turn the bicycle 90 degrees to the direction of travel, and land leaning away from the direction of travel.
The only problem is that it takes skill.
FWIW. IMO, regardless of the rider's skill, a bunny hop is probably the worst way to stop a bicycle
quickly ...
At ~20 mph ([COLOR= #808080]the previously suggested speed[/COLOR]), a bunny hop of a half-second ([COLOR= #ff0000]or,
longer!?![/COLOR]) will result in the bike & rider probably traveling [COLOR= #0000ff]5 [/COLOR]+/- yards BEFORE the tires make contact with the pavement, again ...
Based on the few time when I feel that I've needed to make a
hard stop from ~20mph to Zero, I reckon it takes at least 30 feet (
i.e., [COLOR= #0000ff]10[/COLOR][COLOR= #808080] yards if you want to use the same measuring gauge ... INPUT different values
you don't think mine are correct[/COLOR]) in a
controlled, hard stop to go from ~20mph to Zero ... so, a bunny hop could mean that the final stopping point would probably have about 15 +/- feet beyond where I would have wanted to have been when the bike was stopped!?!
FYI. To truly stop suddenly the way to
kill the forward momentum you want to lock the front wheel with the tire firmly ON THE GROUND
and then allow the rear of the bike to swing around ... the odds are that the momentum will lift the rear wheel slightly off the ground even if you don't want it to ... the key is to keep the lift to a minimal amount ... regardless, your upper body controls the bike's forward swing.
A variation of
drifting can be used, too, where you are almost dismounting from the bike ... basically, the equivalent of a "hockey stop" with your bicycle ... very hard on your tires.
And yes, I have first hand experience in using both methods for executing hard stops WITHOUT crashing ...
IMO, the
skill ([COLOR= #808080]for want of a better term[/COLOR]) in stopping quickly is more in knowing when you cannot wait any longer to lock the front wheel from rolling any further forward and then knowing how to transfer your weight appropriately ([COLOR= #808080]if necessary[/COLOR]).