• Exhaust Bend Template Programme Two
• Example
• Example - Double Length Start
• Example - Variable Radius Bend
• Example - Equal Length Inner Bend
• Example - Outer Weld Seam
• Example - S Bends
• Laser Cutting Direct From DXF File
• Viewing your DXF File

Exhaust Bend Template Programme

When fabricating an exhaust that involves bends it is often beneficial to create a 2d template of the bends. Not only will this make the construction of the pipe easier but also results in a more aesthetically pleasing pipe.

With the Torqsoft Exhaust Bend Template Programme, a 2d representation of the bend is drawn and then saved in an PDF file for immediate printing or saved to your computer for future use. After printing the paper template, the template can be glued to either cardboard or even a stiffer material such as wood. The straight pipe sections may also be printed and a full 2d template of the pipe created.

One such example is shown below for a 350cc Bridgestone racer project, were hardboard has been used as the template material.

Example

For this example we are going to draw the bend layout for the front section of an exhaust system - header pipe. First enter a diameter 1 value of 32 then tab down and enter 40 for diameter 2. Now enter a value of 200 for the length followed by 60 for the total turn angle. Enter a value of 9 for the number of individual sections for the bend. Select A4 from the printer option and hit the "Create PDF" button.

A Dialog box opens with the option to "Open" or "Save" the file appears. By selecting "Open" the pdf document will open, as shown below. After printing all the pages, the document can be saved to your computer for future reference.

Example 2 - Double Length Start

For this example we are going to draw the bend layout for the front section of an exhaust system - header pipe - with a double length start section. First enter a diameter 1 value of 30 then tab down and enter 38 for diameter 2. Now enter a value of 180 for the length followed by 50 for the total turn angle. Enter a value of 6 for the number of individual sections for the bend. Now enter a value of 200 for the 1st section length percentage. Select A4 from the printer option and hit the "Create PDF" button.

A Dialog box opens with the option to "Open" or "Save" the file appears. By selecting "Open" the pdf document will open, as shown below. After printing all the pages, the document can be saved to your computer for future reference.

Example 3 - Variable Radius Bend

For this example we are going to draw the bend layout for the front section of an exhaust system - header pipe - with a double length start section. First enter a diameter 1 value of 32 then tab down and enter 40 for diameter 2. Now enter a value of 250 for the length followed by 150 for the total turn angle. Enter a value of 10 for the number of individual sections for the bend. Now enter a value of 150 for the 1st section length percentage. Select A3 from the printer option and hit the "Create PDF" button.

Example 4 - Equal Length Inner Bend

Sometimes it may be necessary to have a sharp bend which can lead to fabrication problems if all sections have equal length on the bend centre radius. It is evident in the image below - 100mm midsection and 90mm long turning through 60deg - that the inner length of section 2 - only 3 mm long - would be difficult to fabricate.

By setting the "Section Lengths" radio button to "Weld Seam", this problem can be resolved as all the sections now have equal length on the inner bend.

Example 5 - Outer Weld Seam

Sometimes you may wish to put the weld seam on the outside of the bend, particularly if the bend is very tight. Simply click the "Weld Seam - Outer" checkbox and the weld seam will automatically be placed on the outside of the bend.

Example 6 - S Bends

Sometimes it may be necessary to have an S bend shape in a pipe bend. This is achieved by inputing a negative number for the End Cut Angle. The example below shows a 3 section pipe bend with the End Cut Angle set at -10 degrees. The bend turns a total effective angle of 30 degrees though in actual fact it turns 40 degrees followed by 10 degrees in the opposite direction.

Laser Cutting Direct From DXF File

The "Semi Works" and "Works" Exhaust Designer membership options also gives you the ability to create a dxf file with your construction templates for creating that perfect pipe bend. This file can then be sent to a laser cutter or you may wish to print paper templates of the pipe sections direct from your 2D CAD.

When creating a DXF file, first enter all your bend data then hit the "Create DXF" button. For any of the Microsoft browsers such as Internet Explorer 11 and Edge, a dialog box appears at the bottom of your screen with 3 buttons. Select the arrow beside the "Save As" button and select a name for your file and the destination directory.

Firefox has a slightly different dialog box appear with the options "Save File" and "Open with" as shown below.

Google Chrome has a dialog box appear along the bottom of the browser window and shows the name of the DXF download file in the LHS corner. There is an UP arrow just to the right of the DXF file name and when clicked 3 options appear - "Open", "Show in Folder". If the "Show in Folder" option is clicked then the default download directory is opened and the file can be Renamed and moved to a more relevant directory.

Viewing your DXF File

If you wish to view your saved DXF file there are several free Viewers available. This is an online viewer Online

Alternatively, this is a PC based Viewer which you can download and install to your PC/laptop. Download