REFUELLING SYSTEM
This equipment is certainly one of the main problems the beginners have to approach Racing classes (F2C and F2F). I saw that in 1980 when I began Team Racing, and we saw the same thing in 1992 when our club decided to launch Goodyear diesel Racing with some new teams and newcoming mechanics.
This equipment is certainly one of the main problems the beginners have to approach Racing classes (F2C and F2F). I saw that in 1980 when I began Team Racing, and we saw the same thing in 1992 when our club decided to launch Goodyear diesel Racing with some new teams and newcoming mechanics.
We present today this type of refuelling bottles, hoping theses sketches will help you to have a good system without leaks.
The fastest pitstops depend certainly of the engine but often of the whole refuelling system , (multifunction valve, finger tip, and bottle).
When Roland built the first bottles ( you can see one of the first on Georges' arm), he thought certainly at his comfort, but immediately at the possibility to change the bottle ( and the fuel easily) during a race – we shall see later how this possibility may be important to save some races whem your compression setting was too optimistic.
The medical hard plastic bottles he used were 60 mm diameter. He found the good size plastic collars in the supermarkets. Everything worked. When we decided to build new bottles we decided to keep the same system.
Being difficult to find the same plastic bottles, the body is now issued from an aluminium tube (diam 60mm , 1 mm thick). But you can also use another ready to use bottle (we used babies'bottle, and it works....) The bottom of the bottle is turned in aluminium as shown in drawings, it receives the connection piece in which is connected the flexible Tygon tube.
The top, also turned in aluminium is threaded ( diameter 47 mm x 1,5) to receive the cap . These two parts are brazed on the body and the main part of the bottle is finished.
The cap is the most complicated part of the bottle. You have three threadings to do. One to close the bottle (47 x1,5) , another one to receive the manometer, and a last one to receive the valve of the bulb. We never find the same type of bulbs so we thread this hole last. Generally the diameter and thread of the manometer plug are standard
We use bulbs from blood pressure system – we find them in medical supplies shop.
The pressure gauge ( 0 – 1 bar) come from plumber supplies and are of several types, shapes and prices. But the most simple is the best.
We use a polyurethane O ring to have the necessary airtightness to keep 300 grams of pressure inside the bottle. More is unuseful.
The flexible tube is connected to the bottle with a classic connection, it runs to the fingervalve. We slot a filter between the bottle and the finger valve to keep the fuel clean.
Your refuelling system is ready to use. If you take care of it, you can use it during several years. Every two years I change the Tygon flexible tube, and the filter.
