Dew Point In Simple Terms

Got a spanner in the works? Post your motorcycle problems here.
redbikejohn
Posts: 2158
Joined: Wed Aug 04, 2010 4:01 pm
Has thanked: 2 times
Been thanked: 83 times

Re: Dew Point In Simple Terms

Post by redbikejohn »

Yamaha tenere 700
XT660Z written off from behind by car.



Check out www.redbikejohn.com for ride & race reports (enduro, H&H etc).
fatowl
Posts: 330
Joined: Wed Jun 27, 2012 10:36 am
Has thanked: 2 times
Been thanked: 64 times

Re: Dew Point In Simple Terms

Post by fatowl »

I have a thermometer taped to the handlebars, and when it gets down near zero or below, i go real slow and carefull, like grannie on Sunday.
User avatar
boboneleg
Posts: 5207
Joined: Tue Sep 13, 2011 5:52 pm
Has thanked: 2355 times
Been thanked: 1404 times

Re: Dew Point In Simple Terms

Post by boboneleg »

My dew point is on the end of my nose, when It starts running I know it's cold so I ride I appropriately :lol:
one-legged adventurer
User avatar
chunky butt
Posts: 2036
Joined: Thu Nov 13, 2014 10:39 pm
Has thanked: 54 times
Been thanked: 699 times

Re: Dew Point In Simple Terms

Post by chunky butt »

After a long day in the saddle, you can imagine where my "dew" point is !!! :o :lol: :lol:
catcitrus
Posts: 2114
Joined: Sat Nov 09, 2013 5:36 pm
Has thanked: 95 times
Been thanked: 448 times

Re: Dew Point In Simple Terms

Post by catcitrus »

So much for trying to be helpful with a requested technical explanation!!! :lol:
Dark Knight
Posts: 1025
Joined: Fri Apr 01, 2011 8:46 am
Been thanked: 99 times

Re: Dew Point In Simple Terms

Post by Dark Knight »

I remember when I used to go to the States on business and drive cars all over the place, that there were warning signs at bridges "remember bridges freeze first".
catcitrus
Posts: 2114
Joined: Sat Nov 09, 2013 5:36 pm
Has thanked: 95 times
Been thanked: 448 times

Re: Dew Point In Simple Terms

Post by catcitrus »

Dark Knight wrote: Tue Nov 05, 2019 6:15 pm I remember when I used to go to the States on business and drive cars all over the place, that there were warning signs at bridges "remember bridges freeze first".
evaporative cooling is much more pronounced on bridges--greater surface area (above and below), low thermal mass (heat reserve from the day). --its a bit like the wet finger in the air to determine wind direction. The energy transferred is significant-for illustration---it takes the the same energy to evaporate one cc of water at 100 deg C from liquid to vapour as it does to raise one cc of water from 0 deg C to 100 deg C--the old term is latent heat of vaporisation.In this case the cooling effect of the evaporation is significant--hence the freezing . For motorcycling thats why it feels that much colder on a cool, damp day--water is evaporating off your surface due to air flow ---sucking the heat from you--much worse than a simple cold, but dry day. I have seen such signs here in the UK also.
abermarc
Posts: 12
Joined: Mon Jul 22, 2019 6:39 pm
Location: South Wales
Has thanked: 1 time

Re: Dew Point In Simple Terms

Post by abermarc »

Some top replys there ladies and gents. Some really made me lol - thanks for that. :D :D

Interesting re bridges though. I go over the Severn bridge at about 0600 every morning :shock:
doberso
Posts: 16
Joined: Tue Jul 16, 2019 8:40 am
Location: London
Been thanked: 1 time

Re: Dew Point In Simple Terms

Post by doberso »

I think there are too many variables to accurately surmise what the road conditions will be like on a commute to work. The temperature can drop by 3 or 4 degrees on my 18 mile commute and there is a bridge on the motorway which can have snow flurries on one side and be clear on the other.
Post Reply

Return to “TECHNICAL”