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Welcome to MotorizedBikeForum.com!

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not mad just really really pissed off.

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not mad just really really pissed off. Empty not mad just really really pissed off.

Post by elgallo Tue Dec 31 2013, 00:05

When your bike just falls apart.

not mad just really really pissed off. 20131123_123825_zpsa5c9239a
not mad just really really pissed off. 20131228_150932_zps7df57e22
elgallo
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Post by Chain Driven Thu Jan 02 2014, 21:00

What happened to cause that?
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Post by elgallo Fri Jan 03 2014, 00:47

Chain Driven wrote:What happened to cause that?

Weak frame and engine vibrations. Everything plays a part. Mostly a weak frame. This one in particular was a stamped frame. I made the mistake of not properly welding and reinforcing joints.

Nothing grave.a shop rag tied behind the head tube that held the wires saved me from face planting.
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not mad just really really pissed off. Empty Same problem

Post by James Cagney Sun Dec 21 2014, 10:33

Got this,exempt finishing touches it should fire up. But due the tremendous leverage of the new shift kit and the tight unbroken 66 cc the bicycle frame is flexing enough to toss the chains continually. I'm disappointed but hope to get the engine broken in if it take the next 6 months peddling it only a few yards until it becomes easy to start.The aluminum bikes are more likely to break before the steel frame bikes but I've never seen one break steel or aluminum but I can see it being possible without much effort.
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not mad just really really pissed off. Empty Keep at it get an old steel frame to work with this time ..

Post by James Cagney Sun Dec 21 2014, 21:22

yeah hey found one in the ceder lined closet the moths almost eat up completely .
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Post by Fly Thu Jan 29 2015, 15:51

If you don't have a welder take it to a real welding shop. Not
some buddy that thinks he can unless you know for sure. I do
welding tig, mig & stick.

The biggest problem most back yard welders make on thin tube
is crystallizing the tubing around the weld with too much heat.

Good brazing will work also.
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Post by elgallo Tue Feb 24 2015, 21:37

Fly wrote:If you don't have a welder take it to a real welding shop. Not
some buddy that thinks he can unless you know for sure. I do
welding tig, mig & stick.

The biggest problem most back yard welders make on thin tube
is crystallizing the tubing around the weld with too much heat.

Good brazing will work also.
                                              Fly

i am on board with brazing, if the bike is already together.
and gussets
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