article technique Custom Rodder : fabriquer son parechoc (9)

Pour les 66 000 visites du blog, voici la suite et la fin de l'article technique custom rodder sur la fabrication d'un parechoc kustom :

Clamped in place, one half of the side section looks like it fits fine. From here the top and bottom side section pieces are welded together.

All five pieces (sides, corners, and centersection) are then welded together, and the welds are as clean inside as they are outside.

Marc finishes the bumper by fabricating mounting brackets on both the center section and the ends, placing them in the same locations as on the original bumper.

Side by side, you can see how close the new bumper and the original are. Have you figured out the application yet? The bumper is for a '60s-era Maserati, although, as noted earlier, Marcel's methods could be used to build all kinds of custom parts. Any brave souls out there?

Source : http://www.customrodder.com

Read more: http://www.customrodder.com/tech/0609cr_building_a_bumper/tack_welding.html#ixzz44aqokpDW

Fin de cette série de posts.

article technique Custom Rodder : fabriquer son parechoc (8)

suite de l'article technique custom rodder sur la fabrication d'un parechoc kustom :

Tacked together, the end and center begin to look like a bumper.

The next section to be created is the bumper's outside edge (the piece that runs toward the rear wheel). After tracing that template to the sheet, Marc trims it out on the power shear.

Marc uses the same dies as the bumper's center section to start with, but here finishes with the shaper to bend the ends over to the desired arc.

Not quite satisfied with the machine work, Marc goes to the stump to make it right.

Source : http://www.customrodder.com

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article technique Custom Rodder : fabriquer son parechoc (7)

suite de l'article technique custom rodder sur la fabrication d'un parechoc kustom :

The top and bottom sections look like this after the seam is welded.

Marcel then grinds the welds to create a peak that runs the length of the bumper.

Once the center section and corners are made, they get clamped together over the old bumper. All sections are intentionally made a little too long or too wide, so Marc uses a scribe to show where cuts need to be made to fit the pieces together.

Marc trims the excess metal off each piece using hand shears.

Source : http://www.customrodder.com

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article technique Custom Rodder : fabriquer son parechoc (6)

suite de l'article technique custom rodder sur la fabrication d'un parechoc kustom :

Both dies are mounted into the Piccolo, and you can see what shape they will create. Note the tab at the back of the die-this is a stop guide for the edge of the metal that will be fed through the dies.

You can get the curve of a bumper (how it fits around the back half of a body) two ways. The hard way is to cut a straight piece of metal, then stretch it so it gets the right curve. The easy way is to cut the section with the curve already in it, then just form the edge. Using the second method, Marc and Marcel then fed the curved section through the dies.

What you get is a slightly curved center section (which follows the car body) with a lip formed over one edge. Two of these center section pieces are made-one for the top, one for the bottom.

Again using the old bumper as a form, the two sections are clamped in place before Marc begins to tack them together. Marcel keeps an eye on the sections so they fit together perfectly.

Source : http://www.customrodder.com

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article technique Custom Rodder : fabriquer son parechoc (5)

suite de l'article technique custom rodder sur la fabrication d'un parechoc kustom :

A paper template is again used to show the shape needed for the bumper's center section.

Using a plasma cutter, Marc follows the template shape to make a forming die out of 3/4-inch steel plate.

This is what the roughed-out forming die looks like.

After smoothing the dies with a grinder and double-checking their shape against the template, Marc checks the fit between the top and bottom dies.

Source : http://www.customrodder.com

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article technique Custom Rodder : fabriquer son parechoc (4)

Suite de l'article technique custom rodder sur la fabrication d'un parechoc kustom :

The top and bottom sections look like this after the seam is welded.

Marcel then grinds the welds to create a peak that runs the length of the bumper.

Once the center section and corners are made, they get clamped together over the old bumper. All sections are intentionally made a little too long or too wide, so Marc uses a scribe to show where cuts need to be made to fit the pieces together.

Marc trims the excess metal off each piece using hand shears.

Source : http://www.customrodder.com

A suivre...

article technique Custom Rodder : fabriquer son parechoc (3)

A presque 60 000 visites du blog, on poursuit avec la construction kustom maison d'un parechoc :

Another trial fit finds it's getting close. Marcel knows that fitting the new bumper to the outside of the old bumper will not yield a clone of the original, but the customer wanted something that looked close and would fit, which is what he'll get.

The machines and tree stump can only do so much-extreme shaping is done with hammer and torch, so the section is first clamped in place.

The corner is first heated with a torch flame to white-hot, and the now-pliable metal is formed against the old bumper with a large hammer.

After being slapped and hammered to fit the old bumper, there is a little extra material hanging over both the top and bottom of the new piece.

Source : http://www.customrodder.com

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article technique Custom Rodder : fabriquer son parechoc (2)

Suite de l'article technique custom rodder sur la fabrication d'un parechoc :

after it had been run through the Eckhold Piccolo machine.

Marcel works the metal through the Piccolo machine so it starts to bend and shape the corner of the bumper.

After a few passes, the section is checked for fit on top of the old bumper.

A little bit of ol' fashioned hammer-to-tree-stump moves the metal into shape faster than the Piccolo can.

Source : http://www.customrodder.com

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article technique 'Custom Rodder' : fabriquer son parechoc (1)

Une série de posts originaux (8) et très intéressants : la fabrication d'un pare-choc "kustom".

Les informations sont issues du site custom rodder, bien sur c'est en anglais mais cela reste parfaitement compréhensible :

Custom Bumper Building - Building a Bumper

Marcel Shows How It's Done

Custom Rodder, October 12, 2006

   

Today's top customs and street rods arguably wear more scratch-built parts than ever. From custom frames to hand-hammered bodies, many go beyond the realm of mere "customs" or "rods" to become handcrafted, coachbuilt creations.

Nowhere is this level of craftsmanship more apparent than in the competition for the top two indoor car show awards-the Don Ridler Memorial Award at the Detroit Autorama, and the America's Most Beautiful Roadster award at the Grand National Roadster Show. These honors are given to the owners of the finest vehicles, but are actually earned by the talented craftsmen who design and build the cars. Only a few names repeatedly come up in build credits for Ridler and AMBR winners; Marcel DeLey's has probably been the most frequent in the past decade.

Marcel works out of his Custom Metal Shaping business in Corona, California, with his two sons, Marc and Luc. They specialize in scratch-building fenders, hoods, and entire bodies, and then turn their raw-metal creations over to the build teams that finish them. To date, the DeLeys have built three Ridler winners (2002, 2003, and Ken Reister's 2005 winner, Impression), six AMBR winners (1996, 1999, 2000, 2001, 2003, and 2006), plus many other well-known vehicles.

For all the high-profile cars they build, the DeLeys themselves are pretty low profile. This might be the first time you've read about them, as some builders like to keep their "ace-in-the-hole" craftsmen a secret. When we visited the shop recently, Marcel was starting on a small project: recreating a bumper from a rare vintage car. We're not going to tell you what the bumper is for until the end of this story because, quite frankly, it doesn't matter. What does matter is the process, and we thought some of you budding fabricators would like to see how it was done. Maybe you can even give it the ol' college try and use similar techniques to build a custom bumper-or grille, or whatever-on one of your next projects. Follow along and see how a master does it.

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Marcel's Custom Metal Shaping used the original bumper in the background as a model for fabricating the new one in the foreground. The new bumper is not an exact clone, but a very faithful copy of one that would be nearly impossible to find elsewhere. The same build methods they employed can be used to make custom bumpers, grille bars, or other parts for nearly any project. Let's see how they did it.

Here's what Marcel started with. This vintage bumper was full of pits and had been crunched a few times and poorly straightened. This damage and its age made it too brittle to repair, but Marcel used it as a model/buck to create a new bumper.

Most round pieces used on a project start with paper templates, cut to the shape of the piece to be copied. Those shapes are then transferred to 16-gauge commercial grade steel sheet and trimmed a little oversized with hand shears (you'll see why later). The piece on the right is the top right corner section of the new bumper...

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