Effetto Mariposa Shelter Wheel Kit

39.99

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Effetto Mariposa Shelter Wheel Kit

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DESCRIPTION
DELIVERY

DESCRIPTION+

Valve Silencer and Wheel Balancing Kit

Shelter Wheel Kit is made of 35 washers that fit snugly over the valve stem, gluing at its base, with an elegant and almost invisible silencing effect. It's also great to balance wheels, with an additional vibration-reducing action.

Eliminates valve noises, especially on high-profile rims
Shelter washers can be used to finely balance wheels
Visco-elastic behaviour reduces vibrations

How to silence valves

Shelter Wheel Kit is made of 35 washers that fit snugly over the valve stem, gluing at its base. With minimum bulk and weight, they provide an elegant and almost invisible silencing effect, cancelling unwanted valve movements and vibrations. The re-sealable bag makes sure unused washers retain their properties, when needed for successive applications. Once Shelter washers are applied on the rim, it’s possible to remove the valve an re-insert it without loosing the silencing effect. This is just one application of our Shelter Wheel Kit, but there’s more.

Nobody would drive a fast car whose wheels haven’t been carefully balanced after mounting tyres on. Current high performance bicycle wheels, with fancy ceramic bearings, lightweight carbon rims, cannot deliver their full potential if not properly balanced. It’s an easy task that only requires a Shelter Wheel Kit, a wheel truing stand (or a bicycle turned upside down..), patience and some minutes per wheel.

How to balance wheels

Mount the tyre (and eventually disk) on the wheel, so that the wheel is in its rideable form.

IMPORTANT: If balancing a tubeless wheel, make sure there’s very little or no liquid sealant inside (that can be added later). Liquid sealant spreads while riding without creating wheel unbalance, but it will interfere with static balancing. Place the wheel on a truing stand and make sure it can rotate freely.

With a gentle push, make the wheel spin. After a few complete rotations in the direction of the push, the wheel will enter a pendulum phase where it makes partial rotations, back and forth. Behaving like a pendulum, the excess of weight on the wheel is subject to a restoring force (due to gravity) that accelerates it toward the equilibrium position. Amplitude of swings will reduce until the wheel stops: the lowest point is where the excess weight is. PLEASE NOTE: often wheels stop with the valve at the lowest point… but sometimes uneven weight distribution on the tyre or less-than-accurate carbon fiber lay up overcompensate that, and the lowest point is not corresponding to the valve.
Keeping the lowest point of the wheel as reference, identify the opposite point on the rim (you can find it using a ruler, aligned with the lowest point and the wheel axle) and adhere a Shelter washer there.
Repeat the process from #1. Each time the heaviest point may move slightly (because of friction in the hub), but it will normally remain within a +-10 cm (4 inches) range.

The wheel is balanced when, upon making it turn, IT WILL STOP WITHOUT ENTERING THE PENDULUM PHASE (it won’t change its rotation sense). With each subsequent spin, the lowest point when the wheel stops is a random point on the circumference, changing every time and depending on bearing friction. Washers can be adhered one on top of the other, or side by side, on top of the rim or on its side (depending on rim profile/size).

A good trick, although not always possible, is finding a spoke that’s close to the lightest point of the wheel and cutting the washer on one side, so that the washer can be put around the spoke. Each Shelter washer weights around 1 g. Typical wheel unbalance ranges from 4 to 12 grams.

Visco-elasticity reduces vibrations

The transmission of vibrational energy through any structure can be reduced by introducing visco-elastic materials at discrete points. It’s exactly what Shelter does, contributing to reduce vibrations on very stiff wheels. That’s an added bonus when balancing a wheel with Shelter washers.

Made in Italy

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COURIER DELIVERY

FREE ON ORDERS OVER $99, NZ WIDE*

On all orders over $99 Evo Cycles offers free delivery to any non-rural address in New Zealand* - this includes large / bulky items and bike brands that are able to be shipped**

$6.99 FLAT-RATE FREIGHT FOR ORDERS UNDER $99, NZ WIDE*

On orders under $99 we charge $6.99 fee for non-rural addresses and $11.99 for rural addresses. This is so we can give our customers (that's you!) the most competitive pricing available for small parts and accessories. There are no hidden shipping costs and you know exactly what you're paying for.

*There is an additional $5 charge for all rural deliveries.
**Some brands, including Trek, Giant & Liv bikes are only available via Click & Collect or Evo Home Delivery as they must be fully assembled by a qualified bike mechanic in an approved store.

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Free for all orders over $99. Orders under $99 a $6.99 flat shipping & handling fee applies. Order and pay online and collect everything from one of our showrooms. Just select which store you would like to collect from at checkout. Find out more about Click & Collect here.

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