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Sapim HM Cup Style Polyax Nipple Washer

Sapim HM Cup Style Polyax Nipple Washer

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RRP: £3.75
Our price: £2.75
including VAT 20% ( £0.46 )
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Supplied in packs or 36.
Another recent addition to the Sapim range is the HM nipple washer. This has been designed for use with non-eyeleted rims. Sapim maintain it is better to use a washer on a non-eyeleted rim, it provides a better surface to contact with, reduces friction, spreads the load better and helps to resist corrosion. However, it will add weight to your build and may require you to use longer spokes.

If you are looking to run alloy nipples and/or HM washers. Here are some interesting pieces of technical information about them:

Weight of 1 nickel coated brass nipple (12mm) – ~1g
Weight of 1 alloy nipple (12mm) – ~0.25g

Weight of 1 HM nipple washer – ~0.17g
Thickness of 1 HM nipple washer – ~0.7mm
OD 7.1mm & ID 4.3mm

This means that if you convert a pair of 32 spoke wheels from brass to alloy nipples you will save approximately 48g, if you had a 20:24 laced wheelset you would save approximately 33g. However that weight saving is also at the rim and subsequently will be more noticable. It is also a valuable upgrade because it does not come with any disadvantages.

If you were to add HM washers to a pair of 32 spoke wheels you will add approximately 11g to the wheelset. If you were to add them to a 20:24 laced wheelset you would add approximately 7.5g. When calculating spoke length if you are using HM washers, it is best to add 1.5mm to your effective rim diameter.

Alloy nipples make sense as an upgrade if you are looking to add colour or performance to your wheelset. HM washers make sense if you are looking to add longevity to your wheelset at the cost of a small amount of performance.

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Customer Reviews

  • Author: Jamesmoila
    If your partner complains that you snore during your sleep, or if you wake up in the morning feeling tired and grouchy, you may have a common sleep disorder called sleep apnea. This means that at night, your airway is blocked and you stop breathing during your sleep. If you have this condition, you need to find treatment right away to avoid further problems.

    Strengthen your throat and jaw with some basic exercises. Developing these muscles should reduce the symptoms of sleep apnea. You can exercise your throat and jaw by simply pulling your tongue or practicing some very simple breathing exercises. The goal is to train you to breathe differently and hopefully make your sleep apnea disappear.

    Try your best to lay off tobacco and nicotine products. Cigarette smoke can irritate your upper airway causing it to swell up, subsequently hindering your ability to breath during the night. Quitting smoking could therefore, significantly improve your sleep apnea symptoms and will also improve your body's overall health and your feelings of well-being.

    Improve your sleep apnea by slimming down a bit. Recent research showed dramatic improvements in overweight men who shed 25 pounds over a period of one year to reduce sleep apnea symptoms. In some cases, the weight loss resulted in a cure of sleep apnea where no further treatment of the condition was necessary.

    If you tend to snore a lot and have difficulties staying asleep, you should go see your doctor right away. You might have a condition known as sleep apnea: find an effective treatment so you can get enough sleep and go through your daily activities without being held back by your health problem.

    Keep your bedroom in prime shape for sleeping. Insomnia and sleep apnea are often connected. This makes keeping an environment in which you sleep at the right temperature, lightness level and sound level important for helping you get a good night of rest. The right environment also means leaving your stresses outside the bedroom to ensure you are relaxed enough to fall asleep.

    If you have been diagnosed with sleep apnea, it is important to avoid drinking alcohol. Alcoholic beverages will relax the muscles in your throat, which makes it more likely that they will block your airway during your sleep. At the very least, avoid any alcoholic beverages in the evening before you get ready for bed.

    Drink one cup of caffeinated coffee a few hours before you go to sleep. It may seem silly to drink a caffeine drink at night, but this can actually help keep your throat open while you sleep. You may have to play around with what time you drink the coffee to avoid restlessness.

    Minimize your risk from the conditions causing sleep apnea. Some sleep apnea risk factors cannot be changed, like genetic or hereditary reasons. But others, such as weight smoking and drinking, can be controlled.

    These tips were written especially for people who suffer from apnea, whether directly or indirectly as a bed partner. While it can be quite difficult to completely remove apnea from your life, there are ways to live with it, and these were touched on in this useful sleep apnea article.

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