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Would you please share with your biking community the news that beginning May 10, 2013, mountain biking will be available at Valles Caldera National Preserve every day (with exception of some special event days).  This is in addition to these special events:  Cruise the Caldera, Twilight Mountain Bike Ride, Banco Bonito Trail Riding, and Banco Bonito Bike-Camp-Bike.

Details can be seen at:   www.vallescaldera.gov/comevisit/bike  and on the flyer I have attached.

Thank you,

 Joel Nossoff

Volunteer-VCNP

jnossoff@unm.edu

**I heard that WD-40 was bad for your chain.  Do you know something I don’t?

(Ian's note: A few of us have been using a spray cleaner/lubricator, similar to WD-40, but in my opinion, better.

Called "Super Slick Stuff" It is available from Ace Hardware and typically lasts six or seven rides in NM)

Many shops use in their wash tanks Simple Green industrial cleaners which have a number of caustic chemicals in various amounts depending on which product is purchased, 2‐butoxyethanol, Ethoxylated Alcohol, Tetrapotassium, Pyrophosphate, Sodium Citrate, Laureth‐7, Triethanolamine, Sodium Nitrite, Xanthan gum, Soda Ash, Sodium Gluconate, Proprietary Surfactant… It is not safe to breath and don't drink the stuff. It will corrode the nickel finish off metal. I used to use it until I forgot and left my chain soaking overnight once. Yikes! After that I went back to regular soap and water and WD-40, which forces H20 out of the links and does not corrode the metal, on the contrary, it coats iron products.

Years ago I read fish oil was one of the WD-40 components, not true. It does contain a number of hydrocarbon components and when it sits for a couple days there is a separation of components that looks like fish oil, a white mucous, on the bottom versus the oily or hydrocarbon layer above. 

Some people believe WD-40 is a detergent, which in fact are the dissolving purpose of certain hydrocarbon components. And some cyclists don't like the idea that WD-40 dissolves or breaks down chain lubrication, which I never understood, because I want the old dirt impregnated, contaminated, lubricant removed. Many Portland cyclists in their damp climate used WD-40 daily during the rainy season. And in the old days, time trial specialists used WD or very light 3-in 1, rather than grease to lube their wheel bearings. It comes down to cycling daily maintenance versus only weekly or monthly, or never? In the southwest I can go two or three rides before the WD-40 needs replacing. In Seattle I cleaned the bike after each damp ride and re-lubed with 40, as I do here during the snowy, muddy season. 

The Boeing product, Boeshield T-9, also penetrates oxidized areas, and leaves a protection coating, similar to WD. Titanium and stainless steel bikes are kept shiny using either product. From their product information, "Once on the surface, Boeshield T-9* has excellent penetrating and moisture displacing properties. Using capillary action it will cut through and stop existing corrosion, find its way into lap joints, seams, and around rivets, and eventually weep out the exterior. However, this activity stops after a limited time (usually 5 to 7 days, depending on temperature and humidity) at which point a waxy film develops in all areas. In this way, the coating will stay put for much longer than the all liquid treatments, eliminating the continual weepage and cosmetic problems associated with them. When reapplication is necessary (usually 3-5 years depending on service and exposure) the existing coating will be re-liquefied and resume its penetration and weepage, again only for a limited period."

T-9 is expensive, $100+ per gallon. I purchase WD-40 by the gallon, $12, which lasts me more than a year of two or three cleanings a week, depending. A two ounce amount with a toothbrush will clean off the contaminated links and at the same time re-lube a chain. Of course, my chains and cluster never get a chance to build up a thick or heavy coat of gunk.

Eric is a retired Boeing engineer who offers his insight to chain maintenance, cleaning, and protection. I learned a few things, cleared up the WD-40 fish oil controversy and replaced it with Stoddard solvent "> a component of these cleaning and lubrication chemicals. Again yikes! Certainly reinforced my belief to always make sure there is good ventilation and use my skin protection gloves with all these chemicals. 


Hi, Steve

Interesting subject, for a couple of reasons.

From 1962 to 1966, I was in the Air Force, working as a "Missile Maintenance Technician" (mechanic) on Atlas Intercontinental Ballistic Missiles. I was stationed at Vandenberg Air Force Base, near Lompoc, California. The Atlas missile was designed and built by the Convair division of the General Dynamics Corporation.

The primary structure of the Atlas missile was a stainless steel balloon. Even though it was the size of a diesel locomotive, It had no internal supports, so it was kept pressurized at all times to maintain structural integrity. The steel was pretty thin: the lower portion of the tank structure was 0.035 inches thick, and it tapered to 0.010 inches thick at the top.

Because the tank structure was made of stainless steel, we had no problems with corrosion, even though Vandenberg was right on the California coast. WD-40 was prohibited on the launch pad, because it could contaminate liquid oxygen systems (the missile burned kerosene and liquid oxygen). 

We did have some WD-40 around, but only used it to keep our wrenches and pliers clean and lubricated.

WD-40 has lots of uses (check out http://www.snopes.com/inboxer/household/wd-40.asp). According to the manufacturer's Material Safety Data Sheet (MSDS), it is 70-75% volatile petroleum solvent and 15-25% heavy petroleum base oil. There is also a small percentage of corrosion inhibitor as well.

So WD-40 is a really good cleaner that dissolves grease and leaves behind a thin film of rust-inhibiting oil. 

What it doesn't do is leave behind any extreme pressure or antiwear additives (http://en.wikipedia.org/wiki/EP_additives). I believe this is why you should use bike-chain-specific lubricants such as Prolink Progold ("with Metal Friction Reducer technology").

I found a MSDS for Boeshield T-9 liquid (http://www.theruststore.com/msds/MSDS_T9_Liquid_2005.pdf) that says it is 61% volatile petroleum solvent and 10% white mineral oil. Don't know what the remaining 29% is, but the sales literature refers to a paraffin wax film left after the solvent evaporates. I wouldn't be surprised to find the Boeshield chain lube has an antiwear additive.

I use Boeshield for stuff where I want a thick waxy protective coating. I use Progold for chains and cables. I use WD-40 to loosen rusty bolts.

Eric


Extreme pressure additives, or EP additives, are additives for lubricants with a role to decrease wear of the parts of the gears exposed to very high pressures. EP additives typically contain organic sulfur, phosphorus or chlorine compounds, including sulfur-phosphorus and sulfur-phosphorus-boron compounds, which chemically react with the metal surface under high pressure conditions.

Primary Route of Entry: Skin contact, inhalation, eye contact

Acute/Potential Health Effects:

EYES: May cause mild eye irritation. Symptoms include stinging, tearing and redness.

SKIN: May cause mild skin irritation. Prolonged or repeated contact may dry the skin. Symptoms may include redness, burning, drying of skin and skin burns.

INHALATION: Avoid breathing vapors or mists. May cause dizziness, nausea, headache or loss of consciousness.

INGESTION: Harmful or fatal if swallowed. Aspiration hazard - this material can enter lungs during swallowing or vomiting and cause lung inflammation and damage.

Chronic / Long Term Effects: Reports have associated repeated and prolonged occupational overexposure to solvents with permanent brain and nervous system damage.

Signs and Symptoms of Overexposure: Signs and symptoms of exposure to this material through breathing, swallowing, and/or passage of material through the skin may include: stomach or intestinal upset (nausea vomiting, diarrhea), irritation (nose, throat, airways), central nervous system depression (dizziness, drowsiness, weakness, fatigue, nausea, headache, unconsciousness). 

 Particularly important info for the Seniors on Bikes group.
 
 As we age, the desire to retain our youthful physicality can often lead to an overdose of exercise. 
 The site below addresses this problem and offers the telltale signs that accompany too much exercise. 
 Particularly good information for seniors who are well into the stage of "aging athletes."
 

fitness.mercola.com/sites/fitness/archive/2012/12/28/7-hidden-signs-of-overtraining.aspx?e_cid=20121228_DNL_art_1

Neat life style article. From Steve Griego. Example paras.

Several studies have shown that exercises including cycling make us smarter. Danish scientists who set out to measure the benefits of breakfast and lunch among children found diet helped but the way pupils travelled to school was far more significant. Those who cycled or walked performed better in tests than those who had travelled by car or public transport... University of California Los Angeles showed old people who were most active had 5 per cent more grey matter than those who were least active, reducing their risk of developing Alzheimer's.

"In the nature of the motion is another unique combination. With the great speed there are the subtle glide and sway of skating, something of the yacht's rocking, a touch of the equestrian bounce, and a suggestion of flying. The effect of all this upon the mind is as wholesomely stimulating as is the exercise to the body."

John Ratey is a Professor of Psychiatry at Harvard Medical School… can't point to a specific reason but says he has seen patients whose severe depression has all but disappeared after they started to cycle.

Half the patients were allowed to ride at their own pace, while the others were pushed incrementally harder, just as the scientist's tandem companion had been. All patients improved and the "tandem" group showed significant increases in connectivity between areas of grey matter responsible for motor ability. Cycling, and cycling harder, was helping to heal their brains.

We don't know how, exactly, this happens, but there is more startling evidence of the link between Parkinson's and cycling. A clip posted by the New England Journal of Medicine features a 58-year-old Dutchman with severe Parkinson's. In the first half of the video, we watch the unnamed patient trying to walk along a hospital ward. He can barely stand. Helped he manages a slow shuffle, before almost falling. His hands shake uncontrollably.

Cut to the car park, where we find the man on a bicycle being supported by staff. With a push, he's off, cycling past cars with perfect balance and co-ordination. After a loop, he comes to a stop and hops to the ground, where he is immediately immobile again. Doctors don't fully understand this discrepancy, or kinesia paradoxica, either, but said the bicycles rotating pedals may act as some sort of visual cue that aided the patient's brain.

http://www.independent.co.uk/life-style/health-and-families/features/the-cycle-path-to-happiness-8422706.html

The SOB's Thursday Ride starting point is in the Santa Fe Community College parking lot at 10:00.

There has been around 15 riders showing up for these rides. The Thursday forecast is for 58 degrees and cloudy, which is nice riding weather. Hope to see you.

Edwin Crosswhite.

SOB Rides for the week of November 18th

Tuesday Ride – Meets 10:00am at DeVargas Mall parking lot, near Office Depot

Winter Ride Schedule (till further notice)

Tuesday Ride – Meets 10:00am at DeVargas Mall parking lot, near Office Depot

Thursday Ride –  Meets 10:00am at Highway 599 Railrunner Station parking lot

SOB Rides for the week of November 5

Tuesday Ride – Meets 10:00am at DeVargas Mall parking lot, near Office Depot

Thursday Ride –  Meets 10:00am at Highway 599 Railrunner Station parking lot