[DVBC] Did anyone ride?

[Drew Knox]

If we can pick our reality like the President does, I like Ira's better. I'm
thinking the reason the Flyers are so slow afoot is because their skates are
too narrow and thus not slippery enough. I for one would enjoy watching them
much more if they switched over to 6" wide skates...

On 2/7/07, Pazos, Javier <Javier.Pazos at geosc.com> wrote:
>
>  Ira,
> In short, no.
> What you are forgetting is that the contact area between the tires and the
> road consists of 100% of the contact area between you and the road.  You
> shouldn't have many troubles as long as you don't have to turn or adjust,
> but every time you lean the bike, your center of gravity is no longer over
> the contact points.  This creates a lateral force perpendicular to your
> forward movement that must be countered by friction.  The smaller your
> contact area, the less surface with which to create that friction.  (Ice
> skates, on the other hand, create a very large area for lateral movement,
> but a very small one for forward movement.)
> Therfore skinny tires are actually worse in slippery conditions.  Although
> I suspect that other factors such as tire material and inflation pressure
> are actually more important.
> —Javier
>
> -----Original Message-----
> *From:* dvbc-list-bounces at list.dvbc.org [mailto:
> dvbc-list-bounces at list.dvbc.org]*On Behalf Of *Ira Josephs
> *Sent:* Wednesday, February 07, 2007 1:18 AM
> *To:* dvbc-list at dvbc.org; Bob LaDrew
> *Subject:* Re: [DVBC] Did anyone ride?
>
> Bob
> So glad you asked. I've been thinking about this post a lot.
> I wouldn't have ridden (Sun.) except that Don called and dragged me out. I
> was sure glad he did, we had a great ride. I did 36, he 42. We ran into ice
> in Ridley Creek State Pk. (where we saw 2 other unnamed riders), so turned
> around and stayed on the regular roads.
> I used all the knowledge gained from the posts from the DVBC science team
> and decided to COOL my water bottle before going out. Not only did my water
> not freeze, but my fingers and toes were warmer than the ride with Adam 2
> weeks prior where I'm pretty sure the temp was a little warmer. Also I think
> that trick somehow enabled me to ride a little faster too. Great advice
> everyone!
> So now I have another question for the science boys (were there any
> girls?). Folks that know me from work always inquire about my riding in the
> cold and especially snow and ice. They always assume it must be really
> treacherous riding a skinny tire road bike (I think 25c's) in the slippery
> stuff. I always say it is no problem and tell them my theory. Maybe you
> techies can give some science to back this up. I say if you are riding in
> normal dry conditions the larger the contact patch between tire and ground,
> the more traction you will have. But, when you are riding on really slippery
> stuff like snow and ice, a large contact patch is just more opportunity for
> slippage, therefore you want skinny tires for a small contact area. It works
> for me!
> Ira (who dropped out of his Master of Science program many years ago)
> PS I just put this huge piece of locust (my favorite firewood) into my
> stove that was collected from the side of the road in about the middle of
> Sweetwater Rd.
>
> ----- Original Message -----
> *From:* Bob LaDrew <bonkersboy at verizon.net>
> *To:* dvbc-list at dvbc.org
> *Sent:* Monday, February 05, 2007 11:11 AM
> *Subject:* [DVBC] Did anyone ride?
>
>
>     Did anyone in the whole club ride outdoors over the weekend? If so, I
> would like to hear about it. Sorry but indoor rides don't count.
>     --Bob LaDrew
>
>
>
>  ------------------------------
>
> _______________________________________________
> DVBC mailing list
> DVBC at list.dvbc.org
> http://list.dvbc.org/mailman/listinfo/dvbc-list
>
>
> _______________________________________________
> DVBC mailing list
> DVBC at list.dvbc.org
> http://list.dvbc.org/mailman/listinfo/dvbc-list
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://ccs2.craftech.com/pipermail/dvbc-list/attachments/20070207/2fe9100a/attachment.htm