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| Q&A: Going Downhill with David Rogers (858 Posts)
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Cauê Lemes E-mail Dave Roger
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On 9/25/2007
Caue Lemes
wrote in from
Brazil
(189.6.nnn.nnn)
Hi Dave,
I just have this e-mail! I don´t understand why It´s not working 100 %. Well,
cauelemes@terra.com.br is also my msn. Please ,try one more time today! If you have msn you can add me.
I have a friend of mine e-mail: godownhill@gmail.com , you can try this one also. I hope one of them work. His name is Marcio.
Thanks
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Porto Alegre City
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On 9/25/2007 M4RC10
wrote in from
Brazil
(201.10.nnn.nnn)
Kludy
You have to fly to Porto Alegre after arriving in São Paulo...
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Flying to Brazil
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On 9/25/2007
Kludy
wrote in from
United States
(216.70.nnn.nnn)
Not sure if we will get to see each other before we go .
What is the name of the town we fly into after Sao Paulo ?
Thanks for every thing, this is going to be sooooooooooo fun .
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Cauê Lemes
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On 9/25/2007
David Rogers
wrote in from
United States
(66.14.nnn.nnn)
Cauê...I have sent 3 email responses in the past week or so. Did you check your "junk" mail folder. Do you have another email address?
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Roger Bros Streetluge (Dave Roger)
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On 9/24/2007
Cauê Lemes
wrote in from
Brazil
(189.6.nnn.nnn)
Hi There!
My name is Cauê Lemes and I live in Brasil. I know that you will came here to race Teitonia. I would like to buy a streetluge from you, the one Riley raced in Europe. I´ve knew that some guys ordered you a luge , than they didn´t pay. Fisrt I would like to know how much. After this , I can send money by Western Union before you came, or right here in cash of course. I will go to Teutonia. Also to go there you will arrive in São Paulo, than Porto Alegre (where I live) It´s close from Teutonia. I can pick It up on the airport if you prefer. I´ve sent you an e-mail , one week ago, as no answer I´ve tried to contac you here. Thanks
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wow
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On 9/24/2007 Sam of NY
wrote in from
United States
(68.193.nnn.nnn)
god that was amazing!
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Rambling man.
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On 9/21/2007
JamieM
wrote in from
Canada
(70.49.nnn.nnn)
I ramble! Your post was good info. Thanks for sharing.
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Ramble
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On 9/21/2007 bob
wrote in from
United States
(76.106.nnn.nnn)
Boy did I ramble on... sorry about that..
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High Speed Tips
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On 9/21/2007
Bob
wrote in from
United States
(132.250.nnn.nnn)
Dont be skeered, be prepared!!!
I wanted to do this without all the science behind it, but some understanding is needed for you to trust this to help. I have test data that will bore you to death so I will just state the facts derived from it.
The following info already assumes you can already ride at 70+ mph and your equipment is setup for speed.
Any reference to speed in mph is not literal and may deviate by +/- 8mph from the stated speed due to rider body postion and form, the shape of the luge and the air density the luge is traveling through.
Problem. A proper body postioned street luge rider approaching speeds over 84 mph will have drag properties such that the center of pressure (COP) starts to move toward and eventually ahead of the center of gravity (COG) resulting in a front end wander left or right. As speeds increase the forces and effect is squared, until the rider looses control as the craft tries to swap ends.
Huh? Well lets look at an arrow. Slowly toss an arrow backward or sideways. It will mostly stay in the same direction as you tossed it. Now throw it real hard and fast backward... it will flip and fly arrow head first. Why? When the arrow is flying "aerodynamically fast" the COP (look at it as the total drags center)builds up behind the COG and rights the arrow direction. This goes for arrows, airplanes, misssle, and just about anything you want to go fast and straight.
On the luge you have aerodynamic properties that start to change and move the faster you go and even worse if you situp, move your feet or get dirty in the wind. Fact: On average, a luge rider experiences approximately 10 lbs of total drag at 60 mph.. even with pointy toes and head down. The hot drag points in order are feet/legs, helmet, hands and shoulders. Even if the full 10 lbs were from the feet in front it is less than the mass at COG, so no stabilty problem.
The luge rider starts to become aerodynamically fast at about 80+ mph where the total drag force is squaring and starts to center near the COG or forward. In order to maintian directional stabilty there needs to be less drag in front and more in the rear. Yes drag will slow you, but it is all you have to save your ass. Arg. Im getting boring here....
So the tip... Like I need to tell you... keep toes pointed, hands tucked and head down... but if you start to feel the direction of the luge wandering, get speed wobbles or need to slow or stop over 80+mph..... do not use your feet, DO NOT situp. Keep toes pointed and create drag in places behing your COG (roughly above the beltline). Lift head and shoulders, then elbows flaired to increase drag as needed behind the COG, until the ride settles or until you get under 80 mph where you can use conventional braking.
On standup, I would assume the hands flairing into the wind behind the butt would do the same thing.
Before you attempt your super high speed runs, I suggest you lay on your board and try to imagine over 80mph and the fact that you MUST slow down.. practice and commit to reflex, the method of airbraking that you will use over that speed. 80mph and higher is freaky... it not only sounds different, you can steer just by putting your fingers out or pointing your toes to the side.
One last note before you decide to ride over 70 some mph... anywhere. The force on impact squared as your speeds increase. i.e. twice as fast yields 4 times the impact force if you hit something.
Tight leathers, tight helmet, and tight shoes do more than help you go faster, they keep things in place if you ......... well never mind.
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Bob's tips
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On 9/20/2007
David Rogers
wrote in from
United States
(66.14.nnn.nnn)
Please share....I'm skeeered!
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still here...
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On 9/20/2007
David Rogers
wrote in from
United States
(66.14.nnn.nnn)
Thanks to all of you guys for keeping this forum alive for me.
It's great to see guys like Grundy still keeping in tune to the downhill world. Pictures and stories of people like Grundy doing downhill skateboarding in the 70's are the true beginnings of the sport. These are the guys that inspired me as a teen. I feel lucky to have some years in the downhill scene and to help pass the torch to another generation.
A sign that downhill skateboarding is stronger than ever is evidenced by the age of the riders on the recent race podiums. Riders in their teens and early twenties are taking riding and racing to new levels. Good riders in their late twenties and thirties are now staring to feel their age and looked at as "veterans". This is how it should be.
Top Challenge was a blast, and it was great to see one of my skateboards under the feet of the winner...good job Erik! It is a treat to hang with all the riders and meet new ones. It was great to see Judith race in her hometown and in front of her family and friends for the first time. She payed the price for all the fun with a few hard falls that had me worried. I played it safe in the skateboard race since I was in "family vacation" mode rather than "race" mode....heck, I had a luge victory to celebrate that evening!
Next month Judith and I are off to Brazil. It's a vacation that is sure to be one of the highlights of my downhill years. Teutonia is home to the fastest race course in the world...and Brazil is home to many of the fastest riders in the world. I'll be riding luge and skateboard and giving it a go. The hill looks intimidating to say the least!! I'm sure I will set my personal records on that hill and I will be there when the new records are set for Guinness. Rick Kludy will travel with us and we are looking forward to sharing an awesome expierience with our speedboard and luge brothers in Brazil. Hanging with Rick is a sure way to put a smile on many of the faces we will meet in Brazil.
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Teotonia
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On 9/18/2007
Sergio Yuppie
wrote in from
Brazil
(200.157.nnn.nnn)
Hello Rogers Bros.
let me know if you and same guys need help in Brazil.
Cliffś coming to Brazil for togheter with my self,is my pleasure help same buddy.
I am live in Florianoplis like island is good place too for vacations and security.
pease.
Sergio Yuppie.
48 96184329.
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Speed Record Safety
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On 9/15/2007
Bob Swartz
wrote in from
United States
(76.106.nnn.nnn)
Hey Dave, I have a few concerns and tips for all the guys that are going to attempt these extreme high speed runs in Brazil. Much of my Jet Luge riding is in the 80 to 110 mph range and I have proven a few aerodynamic situations that start to occur (real scary s#@!) and how to counteract them on luge. They may apply to standup but I have no data to prove it. Since you are going to this event I would like to discuss this in your forum and I hope you pass it along at the event. The tips are safety related not "how to go faster".. I don't intend to give away all my secrets.. :-)
let me know if this is ok in your forum.
bob
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Masters class...
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On 9/15/2007 Liam Fourie
wrote in from
United Kingdom
(135.196.nnn.nnn)
I was talking to Rolli while in Europe and he also mentioned that he would not mind there being a similar thing. His reasoning was that alot of the young guns have the balls but are also alot more reckless...being a light rider weighing only about 60kg i would not mind riding against people of my same weight category on certain courses. Although i have seen far too many times that you can work around this with tactical thinking..i.e: staying behind the big guy till the last moment. But thats a bit hard to do when all you want to do is be in front from the word GO! Its all good though i like a challenge.
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Visa for Brazil
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On 9/7/2007 Kludy
wrote in from
United States
(68.8.nnn.nnn)
Dave I tried to e-mail you , changed my stuff up and have only here to get up with you.
I will get my Visa next week and wanted to see how you two where getting along with it. Hope to here from you soon
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David Rogers
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On 9/6/2007
Luis Lins
wrote in from
Switzerland
(83.76.nnn.nnn)
Hi Dave i would like to coming in US next year and do big trip, like to go GMR, Maryhill and skate with you and many other guys. This is my dream i was in many places since 2003 Canada, Sweden, France, Germany, Italy, Switzerland, Austria, England, South Africa and now like to check US roads.
My dream for next year 2008.
see you soon and good luck in Brazil
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Wow!
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On 9/5/2007
JamieM
wrote in from
Canada
(70.49.nnn.nnn)
Thats a racing career(?) spanning 4 decades!!!!!!1!! Thats pretty impressive Dude!
I like Daves stuff too, no fluff, works well! Just what you need to go fast. Or slow in my case! The new equipment is amazing, it makes going fast alot easier. You Guys racing in the early/mid '70s had some serious skills/cajones!!!!!!
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Downhill with Dave
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On 9/4/2007 Kludy
wrote in from
United States
(68.8.nnn.nnn)
I think Dave may still be into kicking some young butt still so it may be another few years for him and his Bro. Sure hope they keep making stuff.
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Old guys rules
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On 9/4/2007 Kludy
wrote in from
United States
(68.8.nnn.nnn)
Won my 1st championship in 1976 in N.C. Yah I would like to race with guys alittle more my age. Starting to get ran over now !
I still have that iron trophy .
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Kludy
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On 9/4/2007
JamieM
wrote in from
Canada
(70.49.nnn.nnn)
Hey Kludy, how long have you been DH skating/racing? Maybe they should have a masters class for more "Mature" guys to battle it out! Would be cool to see Grundy, Hudson et all battling it out.
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Now and Then
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On 9/4/2007 Kludy
wrote in from
United States
(68.8.nnn.nnn)
We would soak the wheels in gas to make them softer, worked great unless you forgot about them, Ha,ha !
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Wow
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On 9/4/2007 Kludy
wrote in from
United States
(68.8.nnn.nnn)
Real good reading . Wow, them days sure where fun. 51 mph standing on a skateboard. peace of wood and some wheels baby !
God I think it was wayyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy more hairball with the gas soaked O Js I had ! I did have a great big OAK G&S board that I loved, barefoot no shirt that fast in N.C. Man you got me thinking that was nuts back then, crazy skating.
Sandy would always call it my skater.
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More Mothballs
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On 9/4/2007
Grundy
wrote in from
United States
(65.117.nnn.nnn)
When we started this whole thing of downhilling back in the early 70's there were a whole gammett of trucks out there that we were trying. Mr. Bennett I met in Huntington Beach at the pier. I was riding under the pier with Arnie Hoag and Bobby Neshie and I remember Mr. Bennett coming over and talking to us. He took us over and showed us some trucks and it started from there. I only rode that board just before the race in 75 and then for awhile in 76 with Ty Page and the Logan's. Then Dave Dillburg built me a couple of new boards we were trying out the whole skateboarding scene was exploding. I rode parallel from my old snow skiing days and found I had more control. Back then everyone wanted to race me and I guess I was just lucky back then, I never lost a race and always skated the same way. We raced LaCosta alot and the hills are long and smooth, there were some long sweeping turns and we just went for it. It wasn't just the downhill kicker like Signal Hill was. The fun runs were up in Anaheim Hills down Knoll Ranch Road. Long, fast and sweeping. The whole Infinity Surfboard crew would go up there and we had alot of fun. Ya, the 70's were fun but so have been the 80's, 90's and now 2000's. Watching you guys rip is fantastic to me and I am happy to know the sport goes on and thrives with the new technology you all bring to it.
Guy
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my mothballs
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On 9/3/2007 herbn
wrote in from
United States
(205.188.nnn.nnn)
i found my copy of the grundy "who's hot" and an ad for infinity,in the who's hot the sponser is wade brown,and the trucks do have a large four bolt hole pattern,bennetts. just as an interesting trivia, was there an earlier year on a more primative board with older trucks?
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early speed board records
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On 9/3/2007 herbn
wrote in from
United States
(205.188.nnn.nnn)
i have a magazine,or rather a remenant of guy grundy posing with the infinity (brand) record setting board of the time 74 or so,didn't look like bennetts,a pre bennett small hole pattern truck,x-caliber perhaps. I think the hut tuck,a couple years later, was a scientifically tested tuck borrowed and adapted from ski dh,before that it was whatever felt fast or seemed to work, there are enough variables that a parallel stance could work pretty well when lots of people did the; roll into a little ball, ass as close to the board as possible, style,,there were no instructions.
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