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+--- Thread: bunny hopin (/showthread.php?tid=38390)
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bunny hopin - 762SPR - 04-12-2012
Quick squid disclaimer: I've never tried bunny hops on a sport bike... BUT I've managed to be able to do them on just about any two wheeled contraption I HAVE tried it on, and once my bike is together I'll definitely be trying on that, too!
The concept is simple from a physics point of view: You need to rotate the front up from the back, and then shift your center of rotation forward and rotate the back end up. Put a pencil on your desk and pinch it on both ends. Lift one end up, that's your wheelie, then lift the other end up, that's your bunny hop!simple eh?... now try it with a 400 pound pike! not so simple anymore!
On small light things, like a bicycle it is really easy to learn and you might want to try it on that first. You want to lean back, bring the front up, then roll forward and lift your feet with the bike while you push the bars down. It's kind of hard to describe, but think of going over a barrel with a ramp on each side while keeping balance. It's essentially the same.
With a light vehicle you can do them without any throttle or brake input. On my bicycle, XR50, 150 pound trials bike, and even on my 230 pound YZ250F I can bunny hop at a stand still if I do the body movements right! It's easiest on the bicycle obviously and a good stand still hop for me is about a foot. On the XR50, maybe 6-8", on the trials bike-- which is sort of cheating with it's pogo stick suspension, it's probably about the same height (150 pound bike!) and I can get an inch or two on the YZ from a stand still...
Again, I've never done it on a sport bike, but I would say from my experience with other things that the body movement is key to getting high bunny hops! Then once you have the "you" part down, once you add engine input, and suspension rebound you can do much higher hops!
Use the throttle/clutch to get the front up a little. Your hop won't go higher than the front wheel, but you probably won't be able to hop from 12 either so feel it out. As the front comes up, bring your weight back and down into a squat. Again, this is all based on timing and feel. Bringing your weight down and back will preload your shock. Once you've loaded the shock, you need to "jump" off the pegs and go FORWARD, pushing the bars forward and slightly down. It is ALL IN THE TIMING! You need to work with the suspension and engine, not against it. Think of jumping off the rear shock like a trampoline or pogo stick, work WITH it!
I have heard of guys on street bikes using the rear brake to do the hop. It's hard to say for sure without having done it, but I can't see it as being useful and I have never had to do it on anything else. Again, think of it from a physics perspective. With the front up, using the rear brake will pivot it around the back wheel and just bring the front straight down. The "hop" using this method is only caused by pogoing off the shock. If you are hoping this way, I would be interested if you can get a better hop form a bigger jump off the shock and body movements I described above and not using the rear brake.
Sorry for being long winded, but I hope this helps. I can't wait to try this on my 636 and see exactly what tweaks need to be done to do it, but I'm thinking it will be very similar...
bunny hopin - M.F. Mall Cop - 04-12-2012
Pretty quick and easy to learn. This was my first or second day of doing them, maybe just an hr or so of practice. About an inch of the ground. Need to clutch it a little higher so i can get a better hop. And my timings a little off. You can feel it when youre good.
bunny hopin - BulgarianMike - 04-13-2012
timing !!! jump as you are clutching and move you ass to the front, squeeze that tank with your knees and you'll be hopping like a foot, its easy its all timing and speed helps too
bunny hopin - 762SPR - 04-13-2012
Originally Posted by Adroit707
Now that I look, I actually see a lot of guys starting from a sitting position... maybe that's the way to go on a sport bike?
Damn, I really need the get my 636 together so I can actually try this stuff on it!
bunny hopin - M.F. Mall Cop - 04-13-2012
Ya definitely sitting. Ive tried standing and its weird/impossible. I think its because on a bmx bike you have to use your arms to pull up, vs a bike you clutch/gas. I just need to throw my body weight forward faster, and clutch up a little higher.
bunny hopin - WiseGuy - 04-13-2012
i kinda sit hard or rock back as the wheelie is coming up then lurch my body forward while tapping that rear foot brake...
bunny hopin - hooter steve - 04-14-2012
sit down clutch the shit out of it. while the wheel is coming up throw ur weight forward use your thighs to pull up and push forward on the tank.. works for me
bunny hopin - ScarryJerry - 04-17-2012
^^^^^ that's my method but pre loading the rear helps a lot to get them higher.
Bill d was saying its that and. Brake and that's how he was doing them to a wheelie but it was a long time ago do I could be wrong.
bunny hopin - mikeismee - 06-18-2012
Romain J, [nomedia="http://www.youtube.com/watch?v=Wi-EyuSuPgg"]STUNTnews.pl | StuntGP 2011 - Romain Jeandrot - YouTube[/nomedia]
bunny hops at 0,11 3,20 3,25 he kills them.