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Your Most Recent Purchase (Pic required)

568552 Views 7241 Replies 171 Participants Last post by  Dos_Ruedas
You can learn a lot about someone by what they purchase.

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Some new gadgetry.
You should start a thread on the Wahoo devices once you use them a few times.
I would also be interested. I wish Wahoo (or anyone) made a bike computer of that design that can be used with an Android phone.
New brake levers for the drop bars; now, to figure if I want to add a dummy back brake or actually run two brakes again?
Brakes = good.

More brakes = gooder. :D

Just kidding. ;)
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Very nice!

Maybe you could use the design of the newest Park Tools truing stand for the fingers?
What I have now was cheap but seems to work ok.
Win, win! Cheap and good... Maybe you should buy another one and save it for when the saddle you are using wears out.
you guys know that trek my wife picked up for 50 bucks? its got those weird oblong gears on it, like for runners (i think is what i was told)
Here is an article a friend wrote about those chainrings.


On a ride in 1983, Oklahoma Bicycle Society founder Red Callaway (he's now 87 and still biking!) remarked to me that "oval chainrings show up on bikes about every 30 years." At that time the Shimano company had just introduced semi-elliptical gears (chainrings) on the crank called Biopace. They were strange looking things to see in use; the pedaling motion made it look as though the gears had gotten bent.

Oval or semi-oval chainrings are an old concept--the picture below shows an 1893 Columbia bicycle with an oval chainring. You might be wondering what the point is. Well, the theory goes something like this: At certain points in the pedal stroke you have more leverage on the pedal. By effectively increasing the diameter of the gear at that point you can take advantage of that extra leverage and apply more power. Then when you pass that point in the pedal stroke the oval/semi-oval shape reduces the diameter at the point where you do not have as much leverage. It's a fairly simple concept and Shimano promoted it heavily with the Biopace design in the mid-1980's. Cycling magazines picked up on the idea and were advocating the benefits of semi-elliptical chainrings also. There was a doctor who wrote a column in one of the cycling magazines. Cyclists would write in with various health issues related to cycling. One complained of sore knees and asked the doctor for advice. The doctor strongly recommended Biopace chainrings because they are "a computer generated design" (that was a big deal in '83) that minimizes knee strain.

We also had a customer at that time who had serious knee issues and was thinking he might have to give up cycling. He heard about Biopace and we installed a set of those gears on his bike. One always has to wonder about how much the effect is real on a new product of that sort and how much is driven by marketing, but in this case his knee problems cleared up and he rode 100-mile rides for several years after that. Biopace became popular and the concept was copied by another brand that made Ovaltech chainrings. By 1987 it was difficult to find a bike shop bike that had round chainrings. A few racers and triathletes had some success with these semi-elliptical gears...but then a funny thing happened.

In 1988 Biopace was gone. So was Ovaltech (replaced by Roundtech--the company rep laughed as he told me about that at a trade show). All bikes now had round chainrings. Biopace was forgotten about as rapidly as a losing vice-presidential candidate. And in 1991 I knew they were gone for good when I was reading the cycling magazine mentioned above. There was this doctor who wrote a column (sound familiar?) and someone wrote in complaining about knee problems--he mentioned that he had Suntour derailleurs and Biopace chainrings. The doctor responded that the problem was clearly those chainrings since they are very hard on knees. Uh, what?

So this is a long-winded way of saying that we really don't know whether semi-elliptical chainrings do any good or not. I tried them for a season during their heyday and thought they worked well for riding at a constant low-cadence pace. For sprinting they caused a sort of an uneven feel on the pedals but, hey, sprinting is hard work--especially for a lazy bike mechanic--so I didn't mind.

And this brings us to Rotorings which are the latest version of the concept (remember, 30 years?--Red was right!). You can find plenty of impressive results published for them. And the manufacturer cites studies showing their advantages. So I'm not going to say they're wrong. I simply do not know. They are expensive though so it's a pricey way to try out a new (well, not exactly) concept. If any of you have experience with them I would love to hear your thoughts about how they perform.

In the meantime, if your knees are hurting...SHIFT TO A LOWER GEAR!
Finally gave up and installed the seat post head parts to help keep my saddle nose at a good attitude. It would nose down just enough to be noticeable and annoying. It would only over the bubble in the level from the front to rear but I could always feel, crazy!
Did you check to see if your garage floor was level at that spot? My garage floor is slanted quite a bit so that any water or other fluids will drain out the door. When I had my new race shop built I had them pour the floor level so that it wouldn't take very much to level all the machine tools.
You just had to bring that up and I had to get a basic check and it appears to be spot on :)

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Well.... how about that, I'm actually good for something after all! Troublecauser extraordinaire. And they said I'd never amount to anything. :D
Some bike tires and new Giro Aeon Helmet.
How fast are you riding that you need "Z" rated tires? They look a little large as well ;)
Good eye!

They are actually rated ZY which is the fastest speed rating of any production tire. Rated 186mph+ (or what some people call "unlimited"), but I don't trust them much over 200mph on the Fat Bike........ ;)
I wonder why they didn't design the foot pads to sit flat on the ground?
Another Fat Tire Bike

Got a Gravity. It rides very nice.

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UPS tracking shows it's made it to Colorado, and won't arrive until Friday. But I am too excited to wait. After all these years in the bicycle industry, I have had enough of carbon fiber, electronic shifting, and the chase for the latest suspension technology. I just want to get back to bashing around an inexpensive bike, without fear of breaking anything (other than my bones). So here is what I ordered for myself.
Congrats! You will be the third person from TwoSpoke that rides a Gravity fat tire bike. Its sort of the Humvee of bicycles, big and heavy, but it will take you anywhere.
Just received my Thule fork mounts with lock cylinders today. I've decided not to drill into the plastic spare wheel bed cover and I bought a piece of plywood that will go in its place and drill through that. Plan to be done with functionality tomorrow and then I'll finalize looks later on
Some of the automotive parts stores sell rolls of fabric that will be a close match to your car's interior. You can glue it to the plywood and it will look like a factory item.
I bought a similar oilless compressor from Harbor Freight ($99), but it is the 150psi version so it could air up bicycle tires.
Small world...
A week ago, I got my old skateboard out of storage. I remember it being a lot easier to ride.
I lubed it and adjusted the trucks. It was still hard to ride.
I wonder if being 70 years old has anything to do with the difficulty? My balance seems okay, but I can't move quickly enough to stay on top of it well.

My first skateboard was made from an old roller skate nailed to a 1x6 piece of white pine (no graphics.) It didn't turn very well because of the steel wheels.
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Model train clubs. They are everywhere.
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