[NMCycling] Mari Holden trivia

David Porter via Bike-racers bike-racers at mailman.swcp.com
Wed Jul 20 15:17:34 MDT 2016


modern clothing materials that is..


On 7/20/2016 2:55 PM, David Porter via Bike-racers wrote:
>
> ..well my understanding is... that air flow is laminar until about 
> 60MPH at which point it gets ugly. This from the folks at the old 
> Galles wind tunnel. After the sand paint, we switched to the 3M tape 
> that was being used on the hulls of the America Cup sail boats... very 
> unobtrusive and the UCI inspectors never mentioned any thing about 
> it.. Looked like a crappy paint job.. The bike frame is pretty 
> insignificant, the wheels are the culprit..we all know this. Of course 
> the rider remains the sack of potatoes that creates the most 
> drag..despite "laminar" flow around the human. So.. the modern 
> materials are likely the key to reducing drag these days.. IMO
>
>
> On 7/20/2016 1:36 PM, Cliff Loucks via Bike-racers wrote:
>> Unless you’re interested in aerodynamics, pay no attention to the man 
>> with the keyboard behind the curtain…  But Kansas or not, 
>> aerodynamics are important in bicycle racing.
>>
>> 60 grit sandpaper:
>>
>> Craig Denman, did you mean ‘hope of speed’ rather then 'hype of speed’?
>>
>> The only thing I’d question here is the size of the grit to use.  60 
>> is fairly coarse but maybe not coarse enough.
>>
>> In aerodynamics, there’s laminar flow (smooth) and turbulent flow 
>> (obviously not smooth). Laminar flow rarely happens - in cycling or 
>> otherwise.  The only time I can think of in the world of cycling is 
>> the wing design on the human powered gossamer condor and gossamer 
>> albatross - designed to try to maintain laminar flow.  Laminar flow 
>> creates much less drag than turbulent flow.  But, the non-intuitive 
>> thing here is that if flow around an object (like a frame tube) is 
>> going to go turbulent (which it will), then the sooner it does (as it 
>> flows around the tube) the less drag it has.  This is exactly why 
>> golf balls have dimples.  They fly further and straighter than the 
>> early versions without the dimples.
>>
>> grit on the bottom of his shoes too?  Probably to aid slowing the 
>> bike down to a stop since his brakes most likely failed after the one 
>> time he used them in the ride (the turn-around).  Just kidding John.
>>
>> Does this mean a roadie should trim the front and shave only the hair 
>> on the back of on his arms and legs?  Only if it’s a coasting race. 
>>  I used to win criterium, now I excel at coasting.  Come on Paul, 
>> meet you at the top of Rio Bravo!
>>
>> Confused?  Good.  Life gets slow without it.  Paul’s life is getting 
>> faster and faster.  HA!
>>
>> —-Cliff
>>
>>
>> _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
>> If brains was lard, Jethro couldn't grease a pan.
>>             - Jed Clampett
>>
>> Cliff Loucks
>> Albuquerque, New Mexico
>> at work: 505-844-9098
>> at play: 505-604-1254
>>
>>
>>> On Jul 20, 2016, at 8:28 AM, paul via Bike-racers 
>>> <bike-racers at mailman.swcp.com <mailto:bike-racers at mailman.swcp.com>> 
>>> wrote:
>>>
>>> ...and the alibaba face mask, gigantic spoke protector (disk wheel 
>>> precursor), Schwinn Ashtabula forks, 12 spokes(?), ...
>>>
>>> On 07/19/2016 05:26 PM, Craig M. Doolittle via Bike-racers wrote:
>>>> And on the bottom of his shoes!
>>>> *From:*Bike-racers [mailto:bike-racers-bounces at mailman.swcp.com]*On 
>>>> Behalf Of*Craig Denman via Bike-racers
>>>> *Sent:*Tuesday, July 19, 2016 5:21 PM
>>>> *To:*Clay Moseley; Chad Patterson; NM Bike Racers
>>>> *Subject:*Re: [NMCycling] Mari Holden trivia
>>>>
>>>> I remember John Frey's first TT record because I spent so much time 
>>>> looking at the stenciled 51:57 on the back of his seat tube -- and 
>>>> recall the 600-grit sandpaper on all of the tube leading edges 
>>>> placed there for the hype of speed.
>>>>
>>>> Craig Denman
>>>>
>>>> On 07/19/2016 03:53 PM, Clay Moseley via Bike-racers wrote:
>>>>
>>>>     John Frey once held the national record at around 52:00 early
>>>>     in his career with RGRT.  I remember when it was still above
>>>>     the 50:00 mark around 1987 or so, then came the "fast years"
>>>>     from 1988 to recent.  I think Kent was the first one to go
>>>>     sub-50 with his Ten-Speed Drive Guercotti, and within a year he
>>>>     got that down to 48:44 or so, when Frey did his thing in 1990
>>>>     (47:35?).  On that same day, Kent also went 47:40-something.  I
>>>>     only recall one other person going sub-48 on the Moriarty
>>>>     course, and that was Colby Pearce with his high-dollar Lotus
>>>>     and Superman position. In recent years, it seems that the 50:00
>>>>     minute barrier has become harder to break.
>>>>     All that being said, I think the Brits were the first ones to
>>>>     make the 25-mile time trial a famous distance that was focused
>>>>     on for speed records.  Our times compare closely with theirs,
>>>>     but it wasn't until Boardman came along that the 47-minute
>>>>     barrier was broken.  Then there was a string of them as well.
>>>>     Anyway, back to your original question, Mari Holden's time is
>>>>     pretty killer.  Many top-level (Pro/Cat-1) men can't time trial
>>>>     that fast on an equitable course with the same conditions. 
>>>>     That time will stand for a while.
>>>>     On Tue, Jul 19, 2016 at 2:37 PM, Chad Patterson via Bike-racers
>>>>     <bike-racers at mailman.swcp.com
>>>>     <mailto:bike-racers at mailman.swcp.com>> wrote:
>>>>     Can anyone tell me the last time a 51:36 would've been the
>>>>     outright winner of Record Challenge?  I'm just looking for
>>>>     something that will illustrate to the average sports fan how
>>>>     ridiculously fast that is.
>>>>
>>>>     Sent from my iPhone
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>>>>
>>>>
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> -- 
> Dave Porter Porter Custom Bicycles 2909 Arno St. NE Albuquerque, NM 
> 87107 505-352-1378 Go HERE: my world www.porterbikes.com/
>
>
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-- 
Dave Porter Porter Custom Bicycles 2909 Arno St. NE Albuquerque, NM 
87107 505-352-1378 Go HERE: my world www.porterbikes.com/
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