Motorsport Plumbing Systems: Reusable Hose Ends
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Reusable Hose Ends
02.56
| 00:00 | When it comes to hose ends for motorsport and performance applications, the reusable style is likely the most common, and even if you haven't used them before, chances are you've seen them used many times. |
| 00:12 | We'll be covering how to put them together in the practical skills section, so for now let's just look at what exactly they are and how they work. |
| 00:20 | As the name implies, reusable hose ends have serious practical advantages due to the ever evolving nature of race cars. |
| 00:27 | They allow us to disassemble the hose end, removing it from the hose if we ever need to make a change to its length or routing, or simply use the hose end somewhere else. |
| 00:38 | What's important to note here is these hose ends are different for rubber braided hose and PTFE braided hose. |
| 00:45 | Hose ends for the basic rubber braided lines have only two main parts, the socket and the fitting, which we discussed in the last module and could have a variety of different threads or angles. |
| 00:58 | The socket has an internal bore with a step on it that the end of the hose sits up against. |
| 01:04 | As the socket threads into the hose end of the fitting, the rubber hose will deform into the internal geometry of the socket, clamping the hose into the fitting while doing so and creating a tight seal and secure connection. |
| 01:17 | PTFE lines on the other hand require a special hose end with an extra part known as an olive or a ferrule. |
| 01:25 | The olive sits between the inner PTFE tube and the outer braid, reinforcing the tube so when the socket is tightened to the fitting, the hose is again clamped in place and the seal is formed. |
| 01:37 | The socket and fitting will most commonly be made from aluminium to keep weight to a minimum. |
| 01:43 | The olive on the other hand is usually made from brass or a PTFE alloy as its purpose is to form a seal against the inside of the aluminium fitting body. |
| 01:53 | It's not recommended to reuse the olive with the rest of the hose end and to replace this part to ensure a good seal. |
| 02:01 | Hardline fittings have already been discussed, but you should see some similarities between the PTFE hose ends and those with compression fittings. |
| 02:09 | We've also discussed size but it's worth noting that these hose ends, generally being AN fittings anyway, will be designated with the same dash sizes. |
| 02:20 | Since most suppliers have different constructions of braided hose and the size of the hose varies as a result, the suppliers will usually offer fittings to their specific hoses. |
| 02:31 | These will work best together so purchasing the matching hoses and fittings is always going to be the best option. |
| 02:37 | The key takeaways here are that the reusable hose ends for rubber braided hose and PTFE braided hose are not the same. |
| 02:45 | The hose ends for PTFE hose include an olive in addition to the socket and fitting, and these are not interchangeable. |
