Author Topic: Bicycle Frames  (Read 118 times)

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Offline KilliansRedLeo

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Bicycle Frames
« on: December 17, 2013, 09:49:34 am »
Once every so often I visit the scrap yard looking for old bicycle frames, especially the swoopy style from the 50s & 60s. The types with curved frame components.

These are a great source of material for muffler mods, especially the front forks. High strength thin wall tubing in all kinds of cross sectional shapes. The forks are a great source of oval or tapered oval tubing, that works great for MMs where there is not much room for the exit.

Tubing is sometimes Reynolds 531 which welds great. Small pieces of the frame can be cut out to yield pre formed smooth curves with no internal obstructions.
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Offline Cut4fun .

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Re: Bicycle Frames
« Reply #1 on: December 17, 2013, 02:42:44 pm »
Any pics of this?   

I remember as a kid cutting forks off parts bikes to make choppers.  Sometimes 3-4 sets.
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Offline KilliansRedLeo

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Re: Bicycle Frames
« Reply #2 on: December 17, 2013, 03:31:33 pm »
I have to do a 576 MM on a customers saw and will take some pistures of the process. Some of the Husqvarna saws don't leave lots of room to either side of the muffler for a round tube. So a piece of oval tubing from a bicycle fork will fit where round won't go. Also the lower rear fork makes for some nice oval tubing also.

I look for the old styles with lots of gentle curves like the first image.

The second image will give you more details.
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
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Offline Al Smith

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Re: Bicycle Frames
« Reply #3 on: December 19, 2013, 07:56:06 am »
The older ones were actually some pretty stout tubing .Socket brazed 4130 chrome moly .Thinner but the same stuff Harley used for frames .

I don't think there is a bicycle made in the US any more .Huffies in Celina Ohio moved off shore a few year back,China of course .Frames are probabley recycled steel beer cans from 1962 .

Offline KilliansRedLeo

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Re: Bicycle Frames
« Reply #4 on: December 19, 2013, 08:02:54 am »
Probably are beer cans in most. I look for European manufacturers like Raleigh or Hercules most of those are made from Reynolds 531 or thin wall chrome moly.
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
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Offline 660magnum

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Re: Bicycle Frames
« Reply #5 on: December 19, 2013, 08:31:25 am »
I have some high end Schwinn road bikes from the late 70's - early 80's as well as some 10 spds from the mid 60's. They are made in USA. Shortly after these, Schwinns were made in Japan and then Taiwan. Now, as you would guess, they are made in China by CBC. Schwinn went through a number of owners in the last 30yrs.

The Schwinn Paramont racing bikes are still owned by a Schwinn and are still custom made in Waterford, Wisconsin as always.

I'm too old to ride bikes anymore but still have them with rotted rubber.
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Offline Cut4fun

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Re: Bicycle Frames
« Reply #6 on: December 19, 2013, 04:29:35 pm »
Neat info.  Show me them sometime Jim.   

I remember and rode the ole banana seat,  sissy bar, cheater or cheetah slicks etc. 
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Offline 660magnum

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Re: Bicycle Frames
« Reply #7 on: December 19, 2013, 04:51:05 pm »
Anytime
We should share what we know... someone may learn...
That knowledge can live after us... and that "Pays It Forward".
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