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Cack Street Frame

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You are looking at a street machine built to withstand all types of grinding. The first thing you may notice is the elevated chainstays similar to those on the S&M WarPig and Berringer frames. We felt, in this case, that this feature would keep the chainstay tubing from getting bashed in. Because dented chainstays was a major concern for the rider of this frame we also made the 7/8" stays .058" wall thickness which is a little thicker than normal.

headtube area

I took the wrap idea and applied it to the headtube of the Cack. Pieces of the downtube continue past the headtube and are wrapped around the front and welded. I got the idea from Profile crank arms. This frame also features anti ovalizing beef especially on the lower portion of the headtube. The wraparound gusset helps to keep it all together.

While this is not a light frame (around 8lbs.), it is not stupid-heavy either. Here, the bottom bracket shell has been turned down in the center to decrease weight. The dropouts are 3/8" thick 4130 plate but they have a fairly short slot and are not too large so their overall weight isn't too much. bb shot
Seat On the toptube, behind the seat tube there is a small triangular gusset for reinforcement. The dual cables are run straight from the gyro to each arm of the 990 style brake. This is a very stiff setup.
Each elevated 7/8" x .058" wall chainstay slants down into a 3/8" thick dropout shaped to not hang up on grinds. The bike could go left or right drive and each dropout hangs down just enough to protect a 13 tooth rear cog. Building the frame around the smaller drivetrain allowed for some weight savings there too. Dropouts
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