the bubba scrub

[Coop]

can someone explain this to me, how it works ? i was reading something in my buddys mx magazine, but it was just over the lunch hour and i didnt really get the grasp of it..

is it a way of getting minimum air over jumps so that you're on the ground quicker and able to gas it some more? or is it a way to set yourself up for a corner after a jump by tabling into the berm.

i'm wondering if it'd be something to try to work into an a-line run, or something like that.

just an idea, up for discussion.

[the flying moose]

At his own races, Stewart is a showman. He has developed a mind-boggling stunt called the Bubba Scrub, in which he takes a steep jump parallel to the ground.

http://www.sptimes.com/2004/12/18/Sports/It_s_Bubba_s_world.shtml

[NickS]

this is interesting anyone have any pictures of this technique or anything else about it.

[NickS]

http://www.motonews.com/mototalk2/showflat.php?Cat=&Board=motomain&Number=302974&page=0&view=collapsed&sb=5&o=0&fpart=

theres a bit on it i dont fully understand it to well more pics would help.

[Coop]

There was a pretty sweet how-to article in a moto mag, and I'll try to post it up, but I've read all the stuff I could google on it and I wondered if anyone had any real-life experience with this trick.

I'll pm SIDESHOW, he's a moto freak I think...

[bcbud]

Check out the DVD The Great Outdoors 1-2 sweet outdoor MX from the states, Bubba is intense, picture coming up the face of a table jump, unweighting the bike at the bottom, and as your front wheel reaches the lip, you whip it flat and suck up the lip, staying low on the bikeand letting the energy of the bike come up into your arms and legs and body. If you have every seen a AA pro BMX race you see it all the time just smaller. That kid gets out in front and just pins it the whole time, nuts on a bike, wish he was at the race in Vancouver.

[SIDESHOW]

http://www.transworldmotocross.com/mx/how_to/article/0,13190,1030379,00.html

ere ya go boys

[SIDESHOW]

I can do it a bit off small jumps, but he does it at warp and it becomes a whole different trick.

I did learn no-hander rear fender grabs off a 60 foot booter on Saturday.....fuck does your bike nose dive when you grab the rear fender, what a feeling.

i tried a nothing and had to pull the bike back by grabbing the rear fender so it turned out to be a 2 handed super seater..........not one purpose....wholly does a 200 pound moto drop when you let er go.


oh so no I can not do the Bubba Scrub, and really there are only like 3 people that can pull that move right now.

It shows that as these sports progress they all borrow from each other, its a very BMXy move.

watch Brian O on a BMX track he carves his bike in like that.

[Ninja]

Good post SIDESHOW. That's a cool techinque, man you gotta have sack to pull that off.

Reminds me of this summer following Rennie down A-line * not for very long * He would get zero Air time off most Jumps, and go warp speed into corners, and (basically) punch the bike into the berms, the speed that he could change direction, was amazing. I learned a ton just by watching him for like 1 minute, just imagine if you could ask a few questions.

[grj]

great thread!

[|2ipper]

BRAIN O RIPPIN BUBBA STYLE!! we've got some real sick footage of b0 (http://members.shaw.ca/jennafisher/jennafisher/IMG_0384_b.jpg)

[|2ipper]

and another one of brian stylin' (http://members.shaw.ca/ifish/IMG_0915_c.jpg)

[NickS]

intresting i want to try this on some jumps it seems interesting a line would be a perfect trail to try it on.

[Coop]

I remember hearing that they ran a chainless dh race on A-Line before, and from my experience (very limited), it seemed like the main thing that was slowing my times down the trail was having to brake to make the landings properly, so how could I manage to keep more momentum over the jumps? Or even just some of the jumps... I have a recurring dream where I am doubling up the first set of 2 tables in a row.

I'd be pretty stoked on seeing this move pulled on an mtb at speed.....!

[SIDESHOW]

you can't do it on an MTB. The move is throttle based and is initiated on the lip.

[Coop]

So he is gunning it as he lays the front tire over and skids it off and over the top of the lip?
or is the advantage that you are gassing it the whole way in and dont stop until you're in the air ? ?

maybe I still dont completely get this move... I'll have to see if I can see it in a video somewhere.

[grj]

the throttle helps keep your ass down in the air, rotational force i think. you can still get (relatively) the same effect by timing your pedalling over jumps. at redudancy, brian o does this very well.

[SIDESHOW]

Originally posted by grj
the throttle helps keep your ass down in the air, rotational force i think. you can still get (relatively) the same effect by timing your pedalling over jumps. at redudancy, brian o does this very well.


huh??


to drop the rear end on a moto with the throttle you need at least a 60 foot hit, and for it to be effective your engine is pinned at about 13000RPM, B.O is quick but not that quick.

[scottvelez]

Originally posted by SIDESHOW
to drop the rear end on a moto with the throttle you need at least a 60 foot hit, and for it to be effective your engine is pinned at about 13000RPM, B.O is quick but not that quick.

Using throttle to lower the rear or raise the nose works becaues you are accelerating the rear wheel and that causes the rest of the bike to rotate in the oposite direction. As the rear wheel accelerates in a clockwise motion, the bike rotates in a counter clockwise rotation.
It has nothing to do with RPM.

[SIDESHOW]

^^^^^are you serious. maybe when your idling your nose might drop but you would need to a 500 foot jump.

I've been racing moto for 20 years bro, and it has everything to do with RPM, in order to drop your rear wheel you need to twist the throttle wide open.



to clarify its the rpm of the rear wheel relative to what the engine is doing.

to all that are reading this disregard the previous post and come to the track in Squamish on Sunday and I'll show you how little the rear end will "sink" at full throttle, and at a mid rev RPM.


when you endo on a moto you lay it wide open and hope it saves your life.




end of story.

[Coop]

so how DOES it work?

[scottvelez]

Originally posted by Coop
so how DOES it work?

No matter what, it's all PHYSICS, so do some surfing on the web for Newton's laws.
Also, look for definitions and explanations of moment of inertia, angular velocity and angular acceleration.

[SIDESHOW]

yes Scott is on the right track with reverse inertia etc,

I've had it explained to me, by they that are smarter than myself....

bottomline: if your endoing on your moto hold er wide open and she'll sink.

who cares about the math, fuckin send it..............

cl

[scottvelez]

If you're nose high, you can also use the brakes to rotate the bike forward and lower the nose.

One advantage MX has over MTB is a bit more control in the air. There has been a few times I could have used a wide open throttle!!!

[Coop]

So how does having a tire pressure that will slide (higher than regular) help Bubba do this move?

[SIDESHOW]

in order to "scrub" the bike needs to smear a little, hard tires would cause a high side if you pushed on it too hard???

the fact is that only Bubbs really knows the answers, no one can pull it like him.

[Wayne P]

Corey is correct.

On another note, I always lock up the front or rear wheel on my MTB when I'm too high in the front. Dips the front of the bike really fast. It helps when your overshooting those tables on A-Line, so you can hit tranny.