Mercedes Mullins
Straightening a micro vinyl fuel line can be done in several ways. One method involves using a straightening tool, such as a bar stock with a U-shaped welded end, to stretch and straighten the tube. Another approach is to anchor one end of the tubing to a fixed object, like a building column, and then attach the other end to a come-along or similar device, pulling it taut to remove any bends. For shorter pieces, straightening by hand is an option, though it may require a few attempts.
Characteristics and Values
| Characteristics | Values |
|---|---|
| Method | Using a straightening tool, a grooved block, or by hand |
| Tool Description | 1/2" X 36" bar stock with a U welded on one end with holes for tubing |
| Tool Usage | One end is vice-gripped to the floor grating, the other end is inserted into the hole in the tab, then the bar stock end is put into a grating hole and used as a lever to stretch the tube |
| Cutting | Both ends must be cut off with a tubing cutter after straightening |
| Material | Vinyl |
| Resistance | High resistance to oil, grease, and fuels |
| Other Resistances | Weathering, tearing, ozone radiation, and surface abrasion |
| Color | Transparent red |
| Max Working Temperature | 175°F |
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What You'll Learn
Using a grooved block to straighten tubing
Straightening a fuel line can be done in a few different ways. One method is to use a grooved block, also known as a straightening tool, to stretch and straighten the tubing. This tool can be made from a 1/2" X 36" bar stock with a U-shaped piece welded near one end. On the U, there is a tab with holes just large enough for the tubing to slip through. One end of the tubing is gripped to the floor grating, and the other end is inserted into one of the holes on the tab, leaving about 1" sticking through.
The next step is to pull on the tubing, which will cause it to stretch and straighten. As the tube straightens, you may need to grab a new hole on the tab. Once you have reached the desired length, both ends of the tubing will need to be cut with a tubing cutter to release it from the holes. This technique can be adapted for use on a regular floor by using a piece of "unistrut" to simulate the floor grating.
Another method for straightening fuel lines involves the use of heat. A hairdryer or hot water can be used to heat the tubing, making it more pliable and easier to straighten. It is important not to overheat the tubing to avoid damage. One suggestion is to stick a metal rod through the centre of the tubing and boil it in water, ensuring that the PVC is not damaged by the heat.
Yet another approach is to use a board to straighten the tubing. The tubing can be straightened against the board, and then a blow dryer can be used to relax the material. Again, care must be taken not to overheat or warp the tubing.
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Stretching the tube with a custom tool
The custom tool consists of a 1/2" X 36" bar stock with a U-shaped piece welded near one end. On the U-shaped piece, there is a tab with holes that are slightly larger than the tubing. To use this tool, one end of the tubing is secured to the floor grating using a vice grip, ensuring it is firmly anchored. The tubing is then inserted into one of the holes in the tab, leaving about 1" protruding. The bar stock is then used as a lever by placing the end into a hole in the floor grating and pulling on it, causing the tube to stretch and straighten.
As the tube straightens, you may need to adjust the position of the tubing in the hole to continue the process effectively. Once you have achieved the desired straightness, both ends of the tubing that were inserted into the holes will need to be cut off with a tubing cutter. This custom tool can be adapted for use on a regular floor by employing a piece of "unistrut" to simulate the floor grating and provide a stable anchor point for the tubing.
It is important to note that this method should be approached with caution to avoid over-stretching the tube. The goal is to remove the bends in the tubing, so finding the right balance is crucial. This technique may require some trial and error, but it can be an efficient way to straighten micro vinyl fuel lines.
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Using a whip effect to straighten by hand
Using the whip effect to straighten a micro vinyl fuel line by hand is a simple and effective method. This technique can be used to straighten the entire length of the tubing and is a great way to achieve a perfectly straight fuel line.
Firstly, you will need to uncoil the tubing and place it onto a flat surface. This is important to ensure that the tubing is not bent or kinked during the straightening process. You can then begin the whip effect by applying tension to the tubing.
One method is to use a piece of wood, around 4" x 12" x 2', with a groove cut into it that matches the width and depth of the tubing. Place one end of the tubing into this groove and secure it with a C-clamp. With the tubing securely held in place, you can then roll the wood back and forth, using the whip effect to straighten the tube.
Alternatively, you can use a tool made from a bar stock with a U-shaped piece welded on, with a tab that has holes for the tubing to slip into. Secure one end of the tubing through a hole in the tab and then insert the bar stock into a grating hole. Use the bar as a lever to stretch and straighten the tubing. As the tubing straightens, you will need to move to a new hole.
It is important to note that you should not overdo the straightening process, as you only need to remove the bends from the tubing. Once you have achieved the desired straightness, simply cut off the ends of the tubing with a tubing cutter.
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Clamping the tube in a bending jig
The Tube Bending Jig is a lightweight and adjustable tool that can clamp onto the tube, allowing for precise bending and straightening. It features quick-change ends, multiple measurement points, and a super-short hinge for complex tube shapes.
Alternatively, a straightening tool can be made from a 1/2" X 36" bar stock with a welded "U" shape at one end. This "U" shape has a tab with holes that accommodate the tubing. By clamping one end of the bar stock to a floor grating and inserting the tube into the tab's hole, the tube can be stretched and straightened by leveraging the bar.
To ensure the tube meets the minimum specifications for compression fittings, it is important to measure the tube's outside diameter (OD). This measurement helps prevent over-stretching, as the goal is to only remove the bends from the tube.
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Anchoring the tube to a building column
To straighten a micro vinyl fuel line, one method is to anchor the tube to a building column. This can be done by following these steps:
Firstly, it is important to measure the tube's outside diameter (OD) to ensure that any straightening does not exceed the minimum specifications for the compression fittings to be used. This is a crucial step to avoid over-stretching the tube.
Next, roll out the required length of tubing. Anchor one end of the tube securely to a building column. You can use a vice grip to attach it to the column, ensuring a tight hold.
Now, attach the other end of the tube to another building column. This can be done with the help of a "come-a-long" or similar tool. This will provide tension to the tube, allowing it to straighten.
Once the tube is taut and straight, you can secure it in place by clamping or weighting down the second end. This will help to hold the tube in its new, straight position.
Finally, you can cut off the excess tubing with a tubing cutter, ensuring that you leave enough length to work with. This method, as described by a user on a mechanical forum, is an effective way to straighten tubing and ensure it meets specifications.
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Frequently asked questions
You can use a straightening tool, which is essentially a 1/2" X 36" bar stock with a U welded on one end. You can also use a grooved block to straighten the tubing.
Depending on the length of the piece, you can try unrolling and straightening it by hand. Hold one end and raise the other in the air, then snap it down on the floor while lowering your hand to the floor.
Ensure that you do not over-stretch the tube and only straighten it enough to remove the bends.
