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**Merv-O** · 03-28-2019, 06:02 PM - **2 Likes**

St. Armand's Circle, Sarasota, FL

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**WPRESTO** · 03-28-2019, 06:06 PM

Originally posted by Merv-O

St. Armand's Circle, Sarasota, FL

St. Armand is lovely.

**Merv-O** · 03-28-2019, 06:10 PM

Originally posted by WPRESTO

St. Armand is lovely.

One of my favorite places in Florida...classy, well laid out and captures a certain back-in-time feeling.

lukulele · 03-28-2019, 08:07 PM - **5 Likes**

Low water bridge, Little River, Alleghany County NC

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Arjay Bee · 03-28-2019, 08:38 PM - **1 Like**

Originally posted by CharLac

Nice shot RJ...looks very "morningish"

Thank you for the comment - sun was definitely setting as it was full in my face as I rode west :-).

**Merv-O** · 03-29-2019, 02:26 AM - **3 Likes**

Broad & Walnut Sts.

**CharLac** · 03-29-2019, 04:31 AM - **1 Like**

Originally posted by Arjay Bee

Thank you for the comment - sun was definitely setting as it was full in my face as I rode west :-).

Oh I believe you

To me, it is the mist that gives that "morning feel".

eddie1960 · 03-29-2019, 08:48 AM - **4 Likes**

cross post in alphabet race

**Geodude** · 03-29-2019, 10:32 AM - **2 Likes**

Originally posted by WPRESTO

What evades me is the physics of why it happens. The roads are graded smooth, then the re-develop the corrugation. The spacing of the peaks & valleys is uniform and nearly identical on a variety of roads I've driven over, indicating some consistent reaction to vehicles driving on such a surface.

The physics behind washboarding has to do with the malleability of the surface and the translational force applied to it. Windblown sand and water ripples are common occurrences from this effect. Even surfaces such as railroad tracks and hard disk platens will form ripples based on the velocity and translational forces applied to the surfaces. Same principle behind skipping stones over water. The force of a spinning stone causes a depression and leading ridge to form which lifts the stone back above the surface which will be repeated until friction slows the stone down to a terminal velocity in which it will then sink. What's also interesting is that in roads most noticeably, these ridges will migrate and are not fixed. I thought harmonics of a suspension system may play a factor, but nope, even a fixed wheel can create a washboard effect.

**paulh** · 03-30-2019, 09:27 AM - **2 Likes**

From the Chili's parking lot at sunset...

**Merv-O** · 03-30-2019, 01:02 PM - **5 Likes**

Grand & Mulberry Streets, NYC.

**Des** · 04-02-2019, 03:35 PM - **5 Likes**

The Tarkine is a remote region of western Tasmania, with vast buttongrass plains, cool temperate rainforest and a wave-pounded coastline. These are from the Western Explorer Road, a gravel road that traverses this wild area. K-3 + DA 12-24 (X-posted from Scenics and 'scapes thread.)

Basie · 04-03-2019, 12:13 PM - **6 Likes**

Leba pass in Angola from Lunbango to Namibe at the coast. Used to be Mocamedes

eddie1960 · 04-04-2019, 09:18 AM - **2 Likes**

corner of Queen and Yonge Streets Toronto - yesterday

**Merv-O** · 04-04-2019, 10:07 AM - **4 Likes**

Ben Franklin Parkway, Eastbound with Philadelphia City Hall Tower in the foreground

03-29-2019, 10:32 AM - 2 Likes	#2634
Geodude Loyal Site Supporter Join Date: Feb 2015 Location: Off to another adventure Photos: Gallery Posts: 3,417	Originally posted by WPRESTO What evades me is the physics of why it happens. The roads are graded smooth, then the re-develop the corrugation. The spacing of the peaks & valleys is uniform and nearly identical on a variety of roads I've driven over, indicating some consistent reaction to vehicles driving on such a surface. The physics behind washboarding has to do with the malleability of the surface and the translational force applied to it. Windblown sand and water ripples are common occurrences from this effect. Even surfaces such as railroad tracks and hard disk platens will form ripples based on the velocity and translational forces applied to the surfaces. Same principle behind skipping stones over water. The force of a spinning stone causes a depression and leading ridge to form which lifts the stone back above the surface which will be repeated until friction slows the stone down to a terminal velocity in which it will then sink. What's also interesting is that in roads most noticeably, these ridges will migrate and are not fixed. I thought harmonics of a suspension system may play a factor, but nope, even a fixed wheel can create a washboard effect. Last edited by Geodude; 03-29-2019 at 10:49 AM.

04-02-2019, 03:35 PM - 5 Likes	#2637
Des Loyal Site Supporter Join Date: Jan 2014 Location: Victoria Australia Photos: Albums Posts: 6,424	The Tarkine is a remote region of western Tasmania, with vast buttongrass plains, cool temperate rainforest and a wave-pounded coastline. These are from the Western Explorer Road, a gravel road that traverses this wild area. K-3 + DA 12-24 (X-posted from Scenics and 'scapes thread.) Last edited by Des; 04-02-2019 at 09:28 PM.

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03-28-2019, 06:06 PM	#2627
WPRESTO Loyal Site Supporter Join Date: Aug 2010 Location: Massachusetts Photos: Gallery \| Albums Posts: 59,142	Originally posted by Merv-O St. Armand's Circle, Sarasota, FL St. Armand is lovely.

03-28-2019, 06:10 PM	#2628
Merv-O Loyal Site Supporter Join Date: Aug 2018 Location: Philadelphia Photos: Albums Posts: 2,098	Originally posted by WPRESTO St. Armand is lovely. One of my favorite places in Florida...classy, well laid out and captures a certain back-in-time feeling.

03-28-2019, 08:38 PM - 1 Like	#2630
Arjay Bee Pentaxian Join Date: Sep 2006 Location: Horn Island, Torres Straits, Q Photos: Gallery Posts: 4,715	Originally posted by CharLac Nice shot RJ...looks very "morningish" Thank you for the comment - sun was definitely setting as it was full in my face as I rode west :-).

03-29-2019, 04:31 AM - 1 Like	#2632
CharLac Loyal Site Supporter Join Date: Apr 2018 Location: Ottawa Photos: Gallery Posts: 8,419	Originally posted by Arjay Bee Thank you for the comment - sun was definitely setting as it was full in my face as I rode west :-). Oh I believe you To me, it is the mist that gives that "morning feel".

03-29-2019, 08:48 AM - 4 Likes	#2633
eddie1960 Veteran Member Join Date: Aug 2010 Location: Toronto Photos: Gallery \| Albums Posts: 13,667	cross post in alphabet race

03-30-2019, 09:27 AM - 2 Likes	#2635
paulh Site Supporter Join Date: Sep 2010 Location: DFW Texas/Ventura County, CA Photos: Gallery \| Albums Posts: 33,319	From the Chili's parking lot at sunset...

04-03-2019, 12:13 PM - 6 Likes	#2638
Basie Pentaxian Join Date: Aug 2011 Location: Windhoek, Namibia Photos: Gallery Posts: 991	Leba pass in Angola from Lunbango to Namibe at the coast. Used to be Mocamedes

04-04-2019, 09:18 AM - 2 Likes	#2639
eddie1960 Veteran Member Join Date: Aug 2010 Location: Toronto Photos: Gallery \| Albums Posts: 13,667	corner of Queen and Yonge Streets Toronto - yesterday

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