Puddles are goood !! Get home wipe down lube chain and gears. Put away and enjoy a recovery drink !!
Chris H. ________________________________ From: "Whalen, Kevin" <[email protected]> To: [email protected] Sent: Fri, May 21, 2010 8:56:40 AM Subject: RE: [COWs] clincher tire deal/tubes and tire discussion I agree, this is great for a Friday morning! --Kevin ________________________________ From: [email protected] [mailto:[email protected]] On Behalf Of ssp Sent: Friday, May 21, 2010 8:22 AM To: [email protected] Subject: Re: [COWs] clincher tire deal/tubes and tire discussion .... :) funny stuff there mtb dude ....my itty bitty brain (thanks kim, that made my 1st chuckle of the day) copies and pastes while ronnies truly comes from his brain cells On Fri, May 21, 2010 at 8:15 AM, Mark Fulford <[email protected]> wrote: Ronnie was > trumped by the surfer dude……. > > >From:[email protected] >[mailto:[email protected]] On Behalf Of > ssp >Sent: Friday, May 21, 2010 8:02 AM > >To: [email protected] >Subject: > Re: [COWs] clincher tire deal/tubes and tire discussion > > >http://www.sheldonbrown.com/tires.html > > >Hydroplaning >Car and truck tires need >> tread, because these vehicles are prone to a very dangerous condition >> called >> "hydroplaning." This happens when driving fast in very wet conditions, >> which >> can lead to the tire riding up onto a cushion of liquid water. When this >> happens, there is a sudden and total lack of traction. >>Cars can >> hydroplane because: Bicycles >> canNOT hydroplane because: >>A car tire has a square road contact, and the >> leading edge of the contact is a straight line. This makes it >> easier >> for a car tire to trap water as it rolls. A bicycle tire has a >> curved road contact. Since a >> bicycle leans in corners, it needs a tire with a rounded contact >> area, >> which tends to push the water away to either side.. >>A car tire is quite wide, so water from the middle >> of the contact patch can have trouble escaping as the tire rolls >> over >> it, if there are not grooves to let it escape. A bicycle tire is >> narrower, so not as much water is >> in contact with the leading edge at once. >>Car tires run at much lower pressure than >> bicyles. The high pressure of bicycle tires is more >> efficient at squeezing the water out from under. >>Cars go much faster than bicycles, again leaving >> less time for water to escape. At high bicycle speeds, hydroplaning >> is just >> possible for car tires, but is absolutely impossible for bicycle >> tires. >>Even with automobiles, actual >> hydroplaning is very rare. It is a much more real problem for aircraft >> landing on wet runways. The aviation industry has studied this problem >> very >> carefully, and has come up with a general guidline as to when >> hydroplaning >> is a risk. The formula used in the aviation industry is: >>Speed (in knots) = 9 X the >> square root of the tire pressure (in psi.) >>Here's a table calculated >> from this formula: >>Tire >> Pressure Hydroplane Speed >>Miles per hour Hydroplane Speed >>Kilometers per hour >>P.S.I. Bars >>120 8.3 113 183 >>100 6.9 104 167 >>80 5.5 93 149 >>60 4.1 80 129 >>40 2.8 66 105 >Squirm(sure > you are familier with squirm) >Knobby treads actually >> give worse traction on hard surfaces! This is because the knobs can bend >> under side loads, while a smooth tread cannot. >>The bending of knobs can cause >> discontinuities in handling; the tire grips OK for mild cornering, but as >> cornering force exceeds some critical value, the knobs start to bend and >> the >> traction suddenly goes to Hell in a handbasket. > > > > >interesting > perspective on flat tire prevention >Prevention >Many flat tires are >> avoidable, but some are not. Some people seem particularly prone to them. >> This is often caused by poor road position: people who get an unusual >> number >> of flats often do so because they are riding in the gutter instead of the >> traffic lane. >>The main travel lanes of most roads are >> kept fairly clear of glass and other dangerous debris by passing motor >> traffic. Cyclists who travel in the normal traffic areas of the roadway >> benefit from this. >>Many cyclists, however, hug the curb out >> of timidity and an irrational fear of being struck from behind by a >> motorized vehicle. The area close to the curb is where all of the glass >> shards, sharp rocks and other junk winds up. If you ride too close to the >> curb, you greatly increase the risk of tire punctures. >>Riding too close to the curb also, >> paradoxically, increases your risk of being hit by a car! By cowering in >> the >> gutter, you reduce your visibility. You also encourage motorists to pass >> you >> even when there is insufficient room to do so safely. You also reduce >> your >> maneuvering room, and may have nowhere to go if evasive action is >> required. > >On Fri, May 21, 2010 at 7:48 AM, Ronnie Raper <[email protected]> > wrote: >Not hydroplaning makes sense from a physics standpoint as > there probably isn't enough surface area of the tire in contact with the > road > regardless of water depth to provide enough lift against the weight of the > bike & rider. In other words, the tire acts like a knife against the water > instead of a spatula. > >Ronnie > >-----Original > Message----- >From: [email protected] >[mailto:[email protected]] On Behalf Of > ssp >Sent: Thursday, May 20, 2010 4:19 PM >To: > CyclistsOfWilson-COWs >Subject: [COWs] clincher tire deal/tubes and tire > discussion > >... >any tube better than > another? >how about the self-sealing slime? >anyone used this? seems > thorn >holes are often. > > >interesting info about road cycling > tires: >did you know a road bike tire CANNOT hydroplane? >http://www.sheldonbrown.com/tires.html > > >continental > GP-4000-s >700x23cc reg:$59.99 >http://www.texascyclesport.com/store/viewItem.asp?idProduct=4310 >buy > 8 or more $33.37 >which inc > s/h >steveT=2 >jeffG=2 >ssp=2 >davidC=2 >8 total so far, that > meets the discount > >anyone else? >tube: >the conti tubes are $4.99 > for the 36mm stem >and $5.99 for the 48mm stem >will ck on those > prices to see how they compare ?? > >-- >You received this message > because you are subscribed to the Google Groups "CyclistsOfWilson-COWs" > group. >To post to this group, send email to [email protected]. >To unsubscribe > from this group, send email to > [email protected]. >For > more options, visit this group at > http://groups.google.com/group/cyclistsofwilson-cows?hl=en. > > >-- >You > received this message because you are subscribed to the Google Groups > "CyclistsOfWilson-COWs" group. >To post to this group, send email to [email protected]. >To unsubscribe > from this group, send email to > [email protected]. >For > more options, visit this group at > http://groups.google.com/group/cyclistsofwilson-cows?hl=en. > >-- > >You received this message because you are subscribed to the > Google Groups "CyclistsOfWilson-COWs" group. >To post to this group, send > email to [email protected]. >To unsubscribe > from this group, send email to > [email protected]. >For > more options, visit this group at > http://groups.google.com/group/cyclistsofwilson-cows?hl=en. >No virus found in this incoming > message. > >Checked by AVG - www.avg.com >Version: 8.5.437 / Virus Database: > 271.1.1/2885 - Release Date: 05/20/10 06:26:00-- > >You received this message because you are subscribed to the > Google Groups "CyclistsOfWilson-COWs" group. >To post to this group, send > email to [email protected]. >To unsubscribe > from this group, send email to > [email protected]. >For > more options, visit this group at > http://groups.google.com/group/cyclistsofwilson-cows?hl=en. > -- You received this message because you are subscribed to the Google Groups "CyclistsOfWilson-COWs" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/cyclistsofwilson-cows?hl=en. DISCLAIMER: This e-mail is for the intended recipient only If you have received it by mistake please let us know by reply and then delete it from your system; access, disclosure, copying, distribution or reliance on any of it by anyone else is prohibited. If you as intended recipient have received this e-mail incorrectly, please notify the sender (via e-mail) immediately. -- You received this message because you are subscribed to the Google Groups "CyclistsOfWilson-COWs" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/cyclistsofwilson-cows?hl=en. -- You received this message because you are subscribed to the Google Groups "CyclistsOfWilson-COWs" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/cyclistsofwilson-cows?hl=en.
