|
|
|
| Q&A: Going Downhill with David Rogers (858 Posts)
|
| Topic |
Info |
|
It does help
|
|
On 8/6/2005
Jonathan Harms
wrote in from
United States
(70.246.nnn.nnn)
Thank you, David. That helps a lot.
|
|
|
|
|
Soft vs Hard
|
|
On 8/5/2005
David Rogers
wrote in from
United States
(66.14.nnn.nnn)
Jonathan,
For straight-line downhill and roll speed, I would go for the soft wheels in nearly all situations.
Soft (sub 80a) have virtually dominated speedboarding and streetluge races for many years. Some racers successfully use the 80a (krypto) or the 81a (abec11) formulas...I’ve never heard of anyone racing 84a or higher.
The soft urethane compounds are better at absorbing the surface roughness and seem to have better rebound characteristics. A wheel with high rebound (measured in percent) actually gives back a high percentage of the energy that is used to deform it. Think of your wheels pushing off of all the little bumps on the road as they roll over them. Springy, bouncy, soft urethane makes fast wheels.
If racecourses were as smooth as a concrete skate park, there would be more use for the harder compounds. Most hills/race courses are rough enough for the soft wheels to be the wheel of choice.
The only drawback with the softer/high rebound compounds is that the tensile strength of the urethane typically decreases as rebound is increased or the wheel is made softer. This means that the wheel will wear faster when pushed in turns. Traction typically suffers when a soft wheel begins to show wear...this can happen in as little as 1 run at a race like Maryhill.
For my race boards...75a...If it's really hot or the 75a's are wearing quickly..78a...Hope that helps!
|
|
|
|
|
Relation between durometer, road surface and roll speed
|
|
On 8/5/2005
Jonathan Harms
wrote in from
United States
(165.134.nnn.nnn)
Hey, David, I hope you will take a stab at this question, as Chaput hasn't (yet) responded on his forum.
Under what conditions is a softer wheel faster than a harder one, and why? To put it another way, under what race conditions would you, personally, choose to ride, say, a 75A or 78A wheel rather than 81A or 84A (or vice versa)? I'm sure the short answer is that the softies would be smoother on rougher pavement, but can you go into more detail? What differs in how the hard & soft wheels actually roll on various types of pavement that makes it so? In this case I'm interested mainly in roll speed for downhill, either in a straight line or with minimal-to-average turning (i.e. NOT hard GS or slalom-style turns).
|
|
|
|
|
GMR.
|
|
On 7/31/2005 FLINDt.
wrote in from
United States
(207.200.nnn.nnn)
GMR this morning, I will be there around 8AM.
|
|
|
|
|
Catching a drift
|
|
On 7/29/2005 John
wrote in from
United States
(207.200.nnn.nnn)
Catching someone's drift is analogous to understanding the general meaning of what someone implies or insinuates.
|
|
|
|
|
???
|
|
On 7/28/2005
martin
wrote in from
Switzerland
(83.79.nnn.nnn)
can please someone explain how to catch a drift?
|
|
|
|
|
Yea Jimmy!!!
|
|
On 7/26/2005
David Rogers
wrote in from
United States
(66.14.nnn.nnn)
Jimmy!!!!Good job on the win in Vernon!! You are on a downhill road trip that most racers can only dream about. I hope I can do some BC racing with you in the future. Have a safe ride home.
|
|
|
|
|
CANADIAN adventures!
|
|
On 7/26/2005
Jimmy Flindt.
wrote in from
Canada
(24.66.nnn.nnn)
John and Dave, see ya soon, I am leaving Jody's house today in B.C., on my way home from another CANADIAN adventure, I got FIRST Place on Sunday in VERNON, B.C., the race is the closest thing to Seattle's SKID ROAD, next year you both are going to attend because I will make you, this has been a very up and down trip but it ended in the best possible way, a TITLE! Later BROS.- Jimmy.
|
|
|
|
|
GMR
|
|
On 7/25/2005
John
wrote in from
United States
(207.200.nnn.nnn)
Hey Danny,
We can access it from the backside according to a few people I talked to. A few of us rode it last Saturday from the ridge and there was heavy dirt in a few areas and minor track marks from heavy equipment for miles. It looked worse than it felt, but we tried to avoid areas that we had spotted on our trek up. I don't know what the top sections, above the ridge and the bonus mile, are like at this point. I imagine there will be a few spots that will require us to slow or even walk our boards for a bit. Nonetheless, several of us were planning to ride again this weekend. The signage says closed Mon -Fri daylight hrs. Let's plan something for early this Sunday before it is too hot. Let me know when you guys can make it and we will ride!
|
|
|
|
|
GMR
|
|
On 7/25/2005 Danny Connor
wrote in from
United States
(207.200.nnn.nnn)
John and/or Dave,
I know I'm always posting, asking if you guys wanna go skate but I'm doing it again. I'm thinking GMR this Sunday. I'm gonna try to get Rob Mold and Jeff Budro out also, but we'll see. Do we have to hike up or can we go from the back? I need to skate a hill soon or I'm gonna lose it. Talk to ya soon. DC
|
|
|
|
|
leather/ body armor
|
|
On 7/25/2005
John
wrote in from
United States
(207.200.nnn.nnn)
David,
It was nice meeting you at Maryhill and it sounds like you have been riding some great roads this summer! I am glad to hear that you had a good time in Europe and I am sure the roads were more than challenging. The pictures I have seen lately have been very impressive and I can only imagine how technical the riding was.
When we saw you at Maryhill, I was using a Dainese protective jacket and David had a Fox brand. The Dainese was pretty pricey at $260 and I think the Fox was around $150. Kellsey, at NJK leathers, suggested this kind of arrangement and he fit the leathers snuggly over whatever protective garments we wore during the fitting process. A good source for this type of equipment is www.ChaparralMotorsports.com San Bernardino, Ca.
|
|
|
|
|
hey brönni
|
|
On 7/24/2005
samy the milkman
wrote in from
Switzerland
(81.13.nnn.nnn)
hey brö bro' you're the man, tree hugging peaceloving hippie... just wanted to tell you that i'm coming to les avants on the first of july... night before is the legendary firestarter event in luzern, can't miss that one, and straight to bukolik. looking foreward to skate with you again! by the way, any pics of altbüron online yet? especially of my last run.... you know the net better than me... rock on!!!
samy
|
|
|
|
|
Be a bro, not a pro!
|
|
On 7/24/2005
Mike Brönnimann
wrote in from
Switzerland
(62.2.nnn.nnn)
guuuys.... skate more, race less! Try being nice
|
|
|
|
|
brain?
|
|
On 7/24/2005 david
wrote in from
United States
(67.101.nnn.nnn)
ok..i really need to stop posting so much, but donald, i would go to swizterland, but i was just there, amazing roads and fun times! i wish i was back at grimselpass right now that one is SICK! were you at almabtrieb or altburon, i probably met you, or saw you at least, so many faces and names that i don't remember. i'm just messin around with martin, sarcasism does'nt seem to translate very well over the net....ok time to go skate now.....
|
|
|
|
|
arrrghh no brain
|
|
On 7/24/2005
donald20
wrote in from
Germany
(80.132.nnn.nnn)
hey dave...you didn't catch martins drift,eh?
whatever,why don't you go to switzerland and show the boyz your full-body armor?
|
|
|
|
|
fast?
|
|
On 7/24/2005 david
wrote in from
United States
(67.101.nnn.nnn)
hey segriest, yur mom did'nt think my position was slow....:-) are you ever going to come over to the U.S. and show us slooow american riders whats up on our easy strait roads?
|
|
|
|
|
aero?
|
|
On 7/24/2005
martin
wrote in from
Switzerland
(83.76.nnn.nnn)
hey you can wear the best suit, the most aerodynamic seemless suit but you're slow as a snail if your position sucks!
|
|
|
|
|
leathers/body armour
|
|
On 7/22/2005
david
wrote in from
United States
(67.101.nnn.nnn)
yo rogers bros,
i liked the style of body armour you guys were wearing at maryhill like a thin mesh lining with shoulder/chest/back/elbows protection. what brand was that?
seems like body armour under leather without any padding is more comfortable and provides more protection than the armour and padding built into the leather, which is what i have. the armour in my leather will move around and slip when i fall, espically the elbows, it seems also that leather with no padding and less seems would be more aerodynamic.
i think i will start looking for some old skool paddless leathers on ebay......unless you guys would happen to have some for somebody around 5'8" 140 pounds...
|
|
|
|
|
GMR!!!
|
|
On 7/22/2005
mike p
wrote in from
United States
(69.107.nnn.nnn)
me and olin are working all this week until the 29th, me construction in santa cruz, so wv, im down to party with u at night when im off, but im surfin during day breaks, not skatin. anyway, olin says that the $ he makes is for next year, but i say we convince him its for a trip to gmr. i think he'll be down. so then, we'd be lookin at skatin gmr on the 31st possibly, not this weekend (quite unfortunately.)
|
|
|
|
|
Luge
|
|
On 7/21/2005
Andreas
wrote in from
Sweden
(83.226.nnn.nnn)
:):):) Dont forget me :):):)--0-------00---.
|
|
|
|
|
Re: Rogers Bros. Luge/ Flavien
|
|
On 7/20/2005
David Rogers
wrote in from
United States
(66.14.nnn.nnn)
Flavien...check your email
|
|
|
|
|
GMR
|
|
On 7/20/2005
David Rogers
wrote in from
United States
(66.14.nnn.nnn)
Steve...How about GMR on the 24th? Mike and Olin...are you guys coming down? Mercado? Gorman? Anyone else? I'd like to get out and do some riding!!
After 4pm on Fridays, I am without internet...let me know before then or call me on the weekend 9513231237.
|
|
|
|
|
Roger Bros Luge...
|
|
On 7/19/2005
Flavien
wrote in from
France
(62.147.nnn.nnn)
Hi
I would like to know how much one of your luge (with no setup, just the deck) would cost?? I've ridden for a few hours during a freeride in France at the end of June and really liked it!!!
How can I get one?
|
|
|
|
|
GMR
|
|
On 7/16/2005
steve
wrote in from
United States
(71.106.nnn.nnn)
im up for a session if i can make it out there... Im in LA for about a week, possibly for 2 weekends or something.
OLin and Mike, try to make it down this weekend or the next! that was a blast skateing at maryhill, lets
skate some GMR if u guys can make it.
Im gonna take the greyhound or whatever on like monday, july 25th, back to santa cruz. i dunno how the bus lines run, but maybe we'll end up on the same bus
|
|
|
|
|
Maryhill & GMR
|
|
On 7/15/2005
David Rogers
wrote in from
United States
(66.14.nnn.nnn)
Mike...Thanks for that! You guys were tearing it up all weekend as well...how is your ankle doing? Come on down guys!! Sunday is the day we usually go to GMR. I'm sure Andrew will also be stoked to ride with you and Olin again. Any weekend with good weather will probably be a good time to come down. Summer temperatures are here!! Be prepared to sweat!
|
|
|
|
|
