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Front vs. rear brake panic stop?

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  • Retrorockit
    replied
    What I do when the bike is going down is don't put my hand out to stop the fall. I let the end of the handle bars hit the gound first.This usually turns the front tire into the ground and lifts the bike back up some. Then take the rest of the fall on my outer arm and shoulder.

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  • Retrorockit
    commented on 's reply
    This is about whether an old school coaster brake riding technique still has any validity.Nothing to do with brake switches or even e bikes especially.

  • JPLabs
    replied
    IMO, the only time to lay down a bike, is to avoid getting catapulted. For example, front end washes out under braking, in a turn. If you let up, the bike rights itself and flips you over the "high side". You land, invariably breaking a collarbone. It's usually FAR better to stay on the brakes and slide out. Don't High Side.

    Brake blending is SO dependent upon the bike. My fat bike will put me over the bars, I need to be careful. Some bikes don't even do that.

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  • sambukhari04
    replied
    Do you mean a brake-cut off sensor? I wonder if it's necessary. I purchased a bike from ebikebc and they mentioned that it's not necessary to install. The hydraulic brakes are suppose to be strong enough to support you in case of a panic. Maybe best to talk to a mechanic because they'll know best.

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  • Retrorockit
    replied
    If you're going to do the lay down technique you stay off the front brake to keep from getting tossed over the high side if the front tire grabs while on it's side. I'm glad you brought that point up for those who've never ridden the old cruisers. You definitely don't want to do a barrel roll on a full size Harley. If for some reason the bike starts to swap ends you can switch to the laydown, but release the front brake if you do.The old coaster brake bikes only had a rear brake and they would skid forever unless you got it sideways, or brakes forward with a 180 turn. On those bikes it was the only game in town. That's why I'm not sure how it actually compares. But I have seriously out braked some bullys on 10 speeds back in the day. I bought a couple new Schwalbe tires, and one of my old ones has had 3 flat repairs.Maybe I'll get some of that testosterone gel or spray and lay down some skid marks like the good old days. Medicare covers anything. You won't go under the car if it's already in front of you, unless it's a jacked up 4x4. Even then the laydown might let you go all the way across underneath. Tom Cruise does it all the time.
    I can usually lock my front tire on pavement so there's not much left on the table for straight ahead braking.






    Last edited by Retrorockit; 07-23-2019, 04:51 PM.

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  • ncmired
    replied
    Laying the bike down was a technique I remember hearing Harley riders mention. I've also heard the same contingent say, don't use the front brake. I suspect once you do that, you surrender directional control of you and risk getting tangled up in multiple hundred pounds of motorcycle. Staying on your tires and braking hard will stop faster than rolling and tumbling on your arse. Also, would you rather go over or under a car?

    The Motorcycle Safety Foundation (MSF) training recommends hard braking right off, both wheels, and if you hear chirping / sense a rubbery feel up front, back off on that wheel.

    Now, how much does the hopefully centered e-bike component weight help us from doing a stoppie, I dunno. Combine that with the bigger tires we often have. My bikes have long wheelbases, and so far, even with 204mm front rotors, have not lifted the rear wheel.

    And guess what, Bosch has developed e-bike ABS. I owned a few BMWs that had ABS - very worry-free in rainy conditions and could be braked straight-line as hard as you please.
    Last edited by ncmired; 07-23-2019, 04:03 PM.

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  • Retrorockit
    replied
    I know for regular stopping that's the way to go. But I'm wondering if laying the bike down in an emergency will stop quicker. I know moto guys do this (I think).
    At 65 years old I don't think it's a good idea to try this experiment myself.

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  • jaymz77
    replied
    With disc brakes, always use the 60/40 rule (same as cars). 60% front and 40% rear. This method will give the best stopping with the best chance of not skidding or laying the bike down. This method should be practiced a lot to get the feeling of your brakes and how they react to quick actions and learning how much pull is needed. The disc rotors are designed to prevent locking up but when you loose any amount of traction due to road conditions, sand, gravel, etc.., you will lock up. I often practice slamming the front brake just before the back brake and let the rear brake assist with the front. This is across the board with every two wheeled vehicle and disc brakes, hope this helps.

    Yesterday, I had a close call and this method stopped me very quickly and did not slide at all.

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  • Retrorockit
    started a topic Front vs. rear brake panic stop?

    Front vs. rear brake panic stop?

    I don't know the answer to this one and maybe one of the younger MTBers with crash pads could test this for me.
    I recall as a child that the old coaster brake cruisers could lock up the rear wheel and skid sideways or even do a 180* turn to stop. The skinny tire "English Racers" with front brakes could only stop going straight ahead in an upright position and were at risk of going OTB while doing it. It has occured to me that with fhe wide tires most of us run and the large front rear disc brakes modern bikes have this is still a valid question. The real question being is if one method is better than the other to say avoid a car that pulls out in front of you and stops, you only get one chance to choose which method you want to use.
    Front brake- you're commited to staying upright and not going OTB.
    Rear brake- you lock the rear and get it swung around ASAP but can lay the bike down.
    Laying the bike down has the advantage that the bike takes the impact, OTB it's your head and neck.
    I haven't used the rear brake technique since forever, but maybe it should still be in my bag of tricks.
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