Advertise Here

A small donation or a purchase from the online store, (See above.) will help towards the upkeep of my blog and registry. No donation is too small. $1 or $2 is much appeciated.
Thank you.     

Join the Registry

If you own a frame or bike built by Dave Moulton, email details to list it on the registry website at 

Email (Contact Dave.)

  If you ask me a question in the comments section of old outdated article, you may not get an answer. Unless the article is current I may not even see it. Email me instead. Thanks Dave

Dave Moulton

More pictures of my past work can be viewed in the Photo Gallery on the Owner's Registry. A link is in the navigation bar at the top

Bicycle Accident Lawyer

Zero Tolerance for Spam

  I can delete Spam a lot quicker than it can be posted. Comments are checked daily, even on old articles, and any with irrelevant advertising links are deleted. Blatant or persistant Spammers are blocked. 

Dave Moulton




Powered by Squarespace

The Logging Truck

I usually ride my bike early when temperatures here in South Carolina are still tolerable. On the rural roads I ride on, I encounter quite a few logging trucks, probably one of the heaviest loads to be found on the roads anywhere.

The reason for these logging trucks being, any undeveloped land in this part of the South is coved with dense forest with many old growth trees. The first steps to clearing the land for development, is to cut down the trees and transport them to a local paper mill.

Riding with my wife the other morning, I was aware of a logging truck coming up from the rear. The sound of the engine is unmistakable. This one was slowing. I could tell by the deep descending note roar the engine made as the driver shifted down his gears. At least three separate gear changes to get down to our speed of about 18 mph. or so.

The reason for his slowing. There was a steam of opposing traffic, maybe six or eight cars, and the driver obviously didn’t think it safe to pass. Actually he could have passed, this was a wide stretch of road, with a bike lane. (Which we were in.)

Instead this driver chose to err on the side of caution and wait, and I appreciated that. When the opposing traffic passed and the road was clear, I heard the engine rev as the process of shifting up through the gears to regain speed started. The driver took his truck clear over to the opposing lane to pass.

I gave the driver a thank you wave to let him know that I was aware of what he had just done, and how much I appreciated it. He gave a friendly “Toot-toot” on his incredibly loud truck horn, as if to say “You’re welcome.”

My wife remarked, “Now that’s what I call sharing the road.” “Damn right,” I replied.” 


     To Share click "Share Article" below


Maintaining my racing weight


A little less than a year ago I wrote about attaining my racing weight again. That was 154 lbs or 11 stone in the UK, the weight I was when I raced back in the 1960s and 1970s. Actually after writing that piece I continued to lose and my weight finally settled at 150 lb.

I have maintained that weight, within a pound or so either way, for a year now. Even through last winter when I wasn’t riding my bike as much. I weigh myself every morning the moment I get out of bed and log my weight with the date.

This may seem excessive to some people, but it does make it easier to maintain a target weight. If, for example, I eat out in a restaurant, I can practically guarantee I will be a pound or two over the next day. But ride a few extra miles on the bike the following day, or cut back on my food intake and I am right back where I need to be.

Without that daily log it would be all too easy to gain a pound a day, and be 10 lb. overweight before I know it. And quite honestly I don’t want to go back there again, not now that I have discovered how good it feels to be slim and fit again.

I will admit part of my initial motivation was vanity. I have always cared about my appearance.

And quite frankly a large belly and back fat handles hanging over my belt, I felt did not look good.

If vanity is a crime then I am guilty, but I look around me, and there is way too much “Visual Pollution” in this world without my adding to it.

All it takes to lose and then maintain a healthy weight is organization and discipline. And the discipline part gets easy after a very short time, as your body adjusts to the new food intake. I rarely feel hungry. Riding a bike has become so easy.

So often I hear from others my age that “Growing Old Sucks.” It doesn’t have to. I’m not saying everyone should do it, but I can recommend it.


      To Share click "Share Article" below


When science finds problems that don’t exist

Several people emailed me with a link to this article in Scientific American.

I am familiar with some of the people and the work outlined in the article, because five years ago I wrote a piece about it.

Jim Papodopoulis, (Left.) featured in much of the Scientific American article, wrote an extremely lengthy 2,200 word response in the comments section and invited me to reply.

At the time I stated that I was not prepared to write a similar length reply, but would discuss the subject over the phone. There never was a follow up phone call.

There is an old British saying that goes, ‘Bull shit baffles brains.’ And clever sounding waffle can impress, especially if published in a notable magazine. But analyze the piece and it says nothing of value. The SA article states:

Everybody knows how to ride a bike, but nobody knows how we ride bikes. 

Of course there are people who know how we ride bikes, but most just do and don’t try to over think it. One of the purposes of this blog is to explain the workings of a bicycle in a simple manner.

So how do we balance on a bike? The gyroscopic action of the spinning wheels is only one little piece of the equation. Actually, when riding slowly, (As slow as you possibly can.) The slowly turning wheels generate hardly any gyroscopic force, and so have little or no effect on staying upright.

It is a simple balancing act, like balancing an upturned broom on your hand. You constantly move your hand to keep it under the center of mass. (The broom head.)

In fact it is easier to balance a broom than it is to balance a broom handle without the head. Therein lies a clue. It is because the center of mass is high above the palm of your hand. Just as when riding a bike the center of mass, (The rider’s body.) is some four feet above the point of contact. (The tires on the road.)

It is almost impossible to ride a bike slowly in a straight line. It is a constant steering the bike left and right to keep the wheels directly under the center of mass. You can even ride slowly ‘no hands.’ It then takes movement of the hips and upper body to remain balanced. Much the same way as riding a skate board, which has very little gyroscopic help from its tiny wheels, or a surf board that has no wheels.

Then as you gather speed it is the momentum of the body’s mass that keeps you upright and going straight. The faster you go the easier it is to balance and to steer left and right by simply leaning left and right. A surfer too, when going slow is constantly moving his body to stay upright. As soon as he catches a big wave and is traveling at speed, he easily stays upright and steers left and right by leaning in that direction.

So how we balance on a bike is no huge mystery, it is a kin to surfing, skating, and many other human activities that become second nature with a little practice. And yes, things like frame geometry and gyroscopic action enter into it. Here is a link to a previous article I wrote on head angles and steering, that explains further. It also explains counter steer, which according to the Scientific American article is another mystery that no one knows about.

I did a quick YouTube search to see if there was any progress on the work on the “Riderless Bike.” I found this little video from last year.

The bicycle, one of the simplest and most efficient machines ever invented by man. Two wheels make it efficient, more efficient than three or four wheels that most other vehicles need to stay upright.

For all useful purposes it requires a rider in order to stay upright. And although it will stay upright for a brief moment without one, if it does not have a rider, what is the point of a bicycle or motorcycle? It is not a practical vehicle to carry anything other than a human passenger.

The bicycle is a mechanical extension of the human body. Riding one is a simple skill that even a small child can master. Once learned it becomes intuitive, a skill that lasts a lifetime, no more difficult than walking or running.

The bicycle has changed little over the 130 odd years since the chain driven bike appeared. There is a reason for that. It has to do with the old saying that goes. “If it ain’t broke, don’t fix it.” Even if the math doesn’t add up.

I believe science, in this case, is trying to find answers to problems that don’t exist. The fact that the world wide bike industry is not exactly lining up to buy into the new tech is another clue that nobody cares.


      To Share click "Share Article" below


Curious goings on

Bizarre scenes in the Tour de France this week, embarrassing almost, with Chris Froome running up Mount Ventoux in a blind panic. I wanted to yell out, “Go back and get your bike.” Everyone knows in a bike race you have to have a bike with you at all times, you can’t just dump a broken bike and continue on foot.

It would have been hardly fair, and would certainly have spoiled the whole Tour if Froome had been disqualified, but you would think someone would have fined him a few thousand Swiss francs. Just a token way of saying, “You can’t do that.” I mean, what would have happened if he had run all the way to the finish. Would someone have asked, “Where’s your bike? You do know you have to cross the finish line with a bike.”

Luckily there was a Time-Trial the next day that sorted everyone out. Froome proved he was worthy of the Yellow Jersey, and more important I think Bauke Mollema did a great ride that put him where he deserved to be, in second place.

Tomorrow’s a rest day, then it will all be over by next Sunday. There is another Time Trial and three big mountain stages. The outcome is still not a forgone conclusion, anything can happen. I just hope there are no more embarrassing running men scenes.


     To Share click "Share Article" below


So far, so good

Nine days of racing, and the Tour de France has reached the first rest day. The Yellow Jersey has been worn by four different people, four stages were won with pretty spectacular solo breakaways, and all top ten riders in the General Classification are a minute and one second apart. (Actually Teejay VanGarderen is 11th with the same time as Alejandro Valverde in 10th.)

A pretty good start I would say. Mark Cavendish won on the first day and took the Yellow Jersey for the first time in his career. The next day World Champion Peter Sagan won the stage and took over the race leader’s jersey. The so called curse of the Rainbow Stripes does not seem to affect Sagan.

Peter Sagan would wear yellow for three days until Greg VanAvermaet won Stage 5 with a long solo breakaway that took over five minutes out of everyone else. Enough of a lead to allow the Belgian rider to hang on to the lead for three more days, even though he is not noted as a climber.

Stage 7 was won by British rider Steve Cummings with another solo break. VanAvermaet came in 5th that day and actually took more time out of the top contenders, but he would lose it all the following day.

Stage 8: The first big mountain stage that went over four major climbs, including the Col du Tourmalet. However, it was on the descent from the final climb of the Col de Peyresourde to the finish, that Chris Froome took 13 seconds out of the second place rider, to take the Yellow Jersey.

Stage 9 was held in torrential rain. Tom DuMoulin gave us another solo victory, while the GC contenders duked it out further down the mountain. Chris Froome attacked several times, and Nario Quintana seemed to follow him each time with comparative ease. But Quintana never attacked himself, and when Dan Martin, Adam Yates, or Richie Porte attacked the Colombian let Froome do the chasing.

I think Quintana is holding back to see if Froome breaks later on in the race. Dan Martin is an exciting attacking rider, so I don’t rule him out for a podium place. Adam Yates too could be near the top, and he must surely be a future TDF winner.

Richie Porte is climbing well but is over two minutes down in 18th place. He is gradually clawing his way back to the top ten after losing 1 min. 45 sec. with a puncture near the end of stage 3. It wouldn’t surprise me to see the Aussie in or near a podium spot.

Whatever happens, I am looking forward to the rest of it. What say you?


Go to SteepHillTV for full results, more picures and videos.

All the racing news and articles at

      To Share click "Share Article" below