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You can use most anything, and adjust the nut on the stem for more or less spring. However, it's important that the main spring be stronger than the recoil spring. Also note that some springs are compression- they store energy when squeezed- and some are expansion- they get bigger when they...

See my how-to video:

As the inventor of the pennyfakething, and the owner of pennyfakething.com, I hereby declare this the gnarliest pennyfakething ever built.

You guys should go to the May Day parade in Minneapolis.

You guys look like a lot of fun, love your choppers, hope I can come out and ride with you some day.

They are bringing back the Wheelman in June! http://www.cokercycles.com

Okay permissions changed, try again.

Okay I figured out I had to add trackers to the torrent, perhaps it will work now.

If you can picture what a spring does when you let it go, it lets all the energy loose at once. In a clock this release is governed by an escapement of some sort (which also serves the purpose of doling out the energy at a regular interval, but I'm not so concerned with that). Da Vinci's...

Re: Old School Bicycle Sidecar Build for 1950 Western Flyer Every time I've been approached by a parent to build a sidecar, they always eventually choose the trailer instead. Sidecars get stuck in traffic, and the trailer gives you on-demand cargo capacity while still being able to fit through...

That is what it is- it uses two garage door springs designed to lift 1200 lbs- so it basically contains the energy of three fat guys jumping off a cliff with a rope attached to the bike. The reason you don't have spring-powered cars is that there's a limit to how much it can store. So instead...

I was very inspired by the "Rag and Bone" bike I saw on this forum. I wanted to make something like that but with a little more emphasis on function over form. I like steampunk but even more I am captivated by the pith helmeted tales of Bedouins and the Nairn Way in Northern Africa. This bike...

National Geographic's Mad Scientists show challenged me to make a clockwork motorcycle in 48 hours. http://www.clockworkmotorycle.org/worldsweirdestbike.avi.torrent http://www.clockworkmotorcycle.org

Hello Rat Rodders, I have enjoyed this thread tremendously. I hope you have seen http://www.johnnypayphone.net/tallbikes/, my vintage tallbike pictures page. No credit.. ouch! The back of the first picture reads "A Jaunt on Choppers, 1918" The second picture says only "Barnabas Newfeld the...

That pennyfarthing is a manufactured bike. However it had been heavily kustomized by the old boricua owner. Check online and you can find them, they're relatively cheap and I assume you can buy just the 36" fixed wheel, that could be useful.

I'm sorry, I'm not very familiar with forum culture. I was led here when Rag and Bone appeared on Brassgoggles and I just wanted to show the work of a friend. Do I need an introduction?

Klaas is a buddy of mine from the Klunker League Now chapter in Ghent, Belgium. He has a very classic style. I don't know if he's heard the term "steampunk" but most of the truest steampunks haven't. Here are some of his bikes: You can see more like the one above at my website...