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Triumph Chopper Project

Heavy Cycle Customs Fabs It Up
From the January, 2009 issue of Street Chopper
By Greg Friend
Illustrators: Greg Friend
0312Stc Triumph18 Z
0312Stc Triumph01 Z
We started out by assessing... 
   
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0312Stc Triumph01 Z
We started out by assessing the situation. The original cast bracket is functional, but very ugly, and has to go, but we wanted to retain the actual pegs and controls, so...
0312Stc Triumph02 Z
...Maldonado used a cut-off... 
   
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0312Stc Triumph02 Z
...Maldonado used a cut-off saw to remove the mount from the foot control bracket.
0312Stc Triumph03 Z
The belt sander made quick... 
   
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0312Stc Triumph03 Z
The belt sander made quick work of the rough edges on the foot control.
0312Stc Triumph04 Z
To get the controls back on... 
   
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0312Stc Triumph04 Z
To get the controls back on the chopper, Maldonado had to shape some 1-1/4-inch DOM tubing with 1/8-inch wall to get it to fit to the round shape of the downtubes.
0312Stc Triumph05 Z
The metal tubing was notched... 
   
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0312Stc Triumph05 Z
The metal tubing was notched to fit the downtubes. You can tell it was done properly because there is almost no gap between the two pieces of metal. Then the foot control bracket was shaped to fit inside the tubing, close enough to make a good weld later.
0312Stc Triumph06 Z
Meissenburg used a flap sanding... 
   
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0312Stc Triumph06 Z
Meissenburg used a flap sanding disc to remove the primer from the frame where the control was going to be welded.
0312Stc Triumph07 Z
First, Maldonado tacked the... 
   
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0312Stc Triumph07 Z
First, Maldonado tacked the pieces together with a MIG welder, then started the final TIG-welding.
0312Stc Triumph08 Z
Before finishing up the right... 
   
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0312Stc Triumph08 Z
Before finishing up the right control, Maldo and Meissenburg measured to match the left control exactly to the right. Remember to measure twice so you only have to weld once.
0312Stc Triumph09 Z
In order to keep the control's... 
   
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0312Stc Triumph09 Z
In order to keep the control's internal springs from warping during the final welding, the controls were disassembled.
0312Stc Triumph10 Z
If you've been following the... 
   
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0312Stc Triumph10 Z
If you've been following the entire Project Triumph Chopper build, you'll recall that the frame is modular, so the engine can be removed. Well, the Heavy Cycle crew unbolted the downtubes so Maldo would have better positioning and make a better weld
0312Stc Triumph11 Z
As you can see, the welds... 
   
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0312Stc Triumph11 Z
As you can see, the welds turned out great; the mount is far cooler than the original. They also retained the original foot pegs and controls!
0312Stc Triumph12 Z
The custom bars were next... 
   
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0312Stc Triumph12 Z
The custom bars were next on the buildsheet. Maldonado started out by designing the risers -- 6 inches straight up from the top of the triple-tree. The tubing was cut and notched to fit the curvature of the bars that would rest inside of them.
0312Stc Triumph13 Z
Once cut, the risers were... 
   
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0312Stc Triumph13 Z
Once cut, the risers were de-burred and fit to the tubing as close as possible.
0312Stc Triumph14 Z
Then, a 1/2-inch 13-plug (13... 
   
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0312Stc Triumph14 Z
Then, a 1/2-inch 13-plug (13 threads per inch) was welded into the bottom of the risers...
0312Stc Triumph15 Z
...and bolted to the top triple-tree... 
   
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0312Stc Triumph15 Z
...and bolted to the top triple-tree to fit the bars.
0312Stc Triumph16 Z
Maldo and Meissenburg decided... 
   
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0312Stc Triumph16 Z
Maldo and Meissenburg decided to go with a Maldonado V shape for the bars. Here, you can see how they created a temporary jig with a heavy block of solid steel and a very strong magnet on either end of the bars and tacked the two bars together, so they would retain they're shape.
0312Stc Triumph17 Z
The bars were tack-welded... 
   
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0312Stc Triumph17 Z
The bars were tack-welded to the risers. To prevent warping during welding, the risers were bolted into a spare set of top triple-trees and a machinist's block was placed between the risers. This way the risers wouldn't end up in the wrong shape: too warped to bolt to the actual triple-tree.
0312Stc Triumph18 S
The completed bars. You can... 
   
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0312Stc Triumph18 S
The completed bars. You can tell Maldo is pretty happy with them. Check back with us to see what direction Heavy Cycle Customs will take the Project Triumph Chopper next!

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