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Mounting Cyclometers on Composite Wheels, Other Aero Wheels, Unusual Hubs, Unusual Forks

I. Transmitter and receiver too far apart--front wheel

II. Transmitter and receiver too far apart--rear wheel

III. Transmitter rubs on fork leg--front wheel

IV. Transmitter and receiver will not align--front wheel

V. Transmitter and receiver will not align--rear wheel

VI. Transmitter prongs and/or tie eyelets in wrong place for attaching transmitter--front wheel

VII. Transmitter prongs and/or tie eyelets in wrong place for attaching transmitter--rear wheel

VIII. No hub flange or spokes for attaching transmitter--disk wheels

IX. Cyclometer 15/25 transmitter magnet will not mount on bladed spokes

X. Cyclometer 15/25 transmitter magnet will not mount on spokes of composite wheels

XI. Cyclometer 15/25 receiver band is to short to reach around fork leg

I. Transmitter and receiver too far apart--front wheel. Brands: Spinergy, Specialized Tri-Spoke

A. Use Avocet aero wheel adapter

1. Adapter places face of transmitter magnet 7/8" - 22 mm - from hub flange

2. Adapter consists of a foam ring, adhesive on both sides, and a piece of PVC tubing machined to accept prongs of transmitter ring

3. Obtain adapter from your dealer (may be special order from your dealer or order directly from Avocet)

AVOCET AERO WHEEL ADAPTER
A 3-prong or 4 prong transmitter snaps on the machined grove of the adapter	An adhesive-backed foam ring holds the transmitter securely to the wheel.

 

B. Construct custom spacer out of PVC tubing

1. Measure the distance from the hub flange to the face of the receiver.

2. Subtract the width of the transmitter (1/8" - 3 mm) from the above measurement

3. Obtain a piece of 1 5/8" - 43 mm OD PVC tubing

4. Cut tubing to length

5. Cut prongs off transmitter ring

6. Glue ring to end of tube--recommended adhesive is silicone sealant

7. Glue tube to hub flange--recommended adhesive is silicone sealant

II. Transmitter and receiver too far apart--rear wheel: Brands: Spinergy, Specialized Tri-Spoke, Cane Creek

A. Use Avocet aero wheel adapter

1. The Avocet aero wheel adapter is designed for the front wheel transmitter. You will have to buy a new front wheel transmitter. Note, it is possible to glue the tabs of the rear transmitter to the aero wheel adapter. Use silicone sealant.

2. See front wheel above for details

 

B. Construct custom spacer out of PVC tubing

1. See front wheel above for details

2. To match the rear wheel transmitter the PVC tube should be 2 1/4" - 57 mm - OD

 

C. Space receiver holder inward from seat stay with tape or other shim material such as tube rubber

1. If the parts are within 3/8 " - 10 mm - you may be able to get them close enough together by shimming the receiver holder

2. Build up material on the stay under the holder to the appropriate thickness before attaching with zip ties

3. Sometimes the frame will allow putting the receiver on the chain stay instead of the seat stay and this may improve clearance and alignment

III. Transmitter rubs on fork leg--front wheel. Brands: Many hubs with extra-thick flanges such as WTB and King when used with suspension forks that have extra-fat legs.

A. Remove transmitter magnet from its plastic housing

1. This provides about 1/8" - 3 mm - extra clearance

2. Gently pry the magnetic ring out of its housing with a small screwdriver

3. Glue the magnetic ring to its metal backing plate with silicone sealant

4. Glue the ring to the hub flange with silicone sealant

 

B. Use rear transmitter. It has a larger diameter and may provide clearance because of the inward slope of the spokes

1. If the wheel is radial, glue to hub flange or spokes with silicone sealant

2. If spokes cross, tie to spoke crossings with zip ties or use fine wire for a cleaner look

3. If there is still inadequate clearance, you can get another 1/16" - 1.5 mm - by removing the magnet ring from its plastic housing, then gluing it to the flange

 

C. Cut off prongs from transmitter ring housing and glue on.

1. Some wheels with straight pull spokes have a cup-shaped flange with the spoke ends inside it e.g. Cane Creek

2. If cup is large enough place ring inside and glue to spokes with silicone sealant

 

D. Use a rear mount kit. With a few forks and hubs it is impossible to get adequate clearance on the front

1. Rear mount kits are sold as a separate accessory

2. All Cyclometer 45tt cadence units use the rear mount cadence kit

IV. Transmitter and receiver will not align--front wheel. Brands: Many mountain bike suspension forks including Rock Shox, Manitou, Marzocchi

A. Use the mountain bike fork adapter (this was included with most units made after 1994)

1. To use the mountain bike fork adapter the receiver must be the adjustable type that slides back and forth in its housing

2. If the receiver and housing are one piece, you will have to buy a complete new mount kit (the mount kit will come with the mountain bike adapter)

3. Obtain adapter from your dealer (may be special order from your dealer or order directly from Avocet)

AVOCET MOUNTAIN BIKE FORK ADAPTER
The receiver holder pivots at the screw.	The mounting pad fits on any fork.	The receiver reverses to move it closer to the transmitter.

 

B. Use rear transmitter ring

1. If the receiver is too high on the fork to align with the transmitter ring, using the larger rear ring may help

2. The rear transmitter will position the magnet about 1/8" higher - 4 mm - higher

3. Obtain a rear transmitter from your dealer (may be special order from your dealer or order directly from Avocet)

4. Tie to spoke crossings or glue hub flange with silicone sealant (radial wheels)

AVOCET REAR TRANSMITTER

The rear transmitter magnet is 2 1/4" in diameter comparted to the front magnet that is 1 7/8" in diameter.

V. Transmitter and receiver will not align--rear wheel. Brands: Many bikes with large diameter tubes such as Cannondale and some carbon fiber bikes

A. Use mountain bike fork adapter

1. The adapter's ability to rotate can improve vertical alignment if the transmitter is above or below the receiver

2. If the receiver is too far from the transmitter reversing the adapter parts at the pivot will move the receiver inward 3/16" - 5 mm

VI. Transmitter prongs and/or tie eyelets in wrong place for attaching transmitter--front wheel. Brands: Mavic Cross Max, Mavic Crossland, Mavic Helium, Mavic Cosmic, Zipp, Phil Wood Hubs, WTB hubs, Hope hubs, King hubs, tandem hubs with 40 or 48 spokes

A. The flange is the wrong size or shape to accept the prongs of the transmitter magnet

1. Remove transmitter prongs and attach transmitter to hub flange with silicone sealant

2. If spokes cross, attach at spoke crossings with zip ties or with fine wire

3. If there are more than 36 spokes there may not be room for the prongs. Tie or glue transmitter as described above

VII. Transmitter prongs and/or tie eyelets in wrong place for attaching transmitter--rear wheel. Brands: Campagnolo Bora, Campagnolo Shamal, Campagnolo Scirocco, Mavic Cosmic, Mavic Cross Max, Mavic Crossland, Mavic Helium, Zipp, Cane Creek

A. When the wheel is laced radially on the left side the transmitter is best attached with wire

1. Thread fine wire through the eyelets and twist tightly around the spoke to prevent slippage

2. The transmitter can also be glued to the spokes with silicone sealant. The silicone must be built up to make a complete ring around the spoke

 

Some rear hubs (Rolf for example) have cutouts in their flanges where a front transmitter can be attached. The prongs of the transmitter can be adjusted by bending for a tight fit

VIII. No hub flange or spokes for attaching transmitter--disk wheels

A. Glue transmitter to surface of disk

1. Flat wheels may require aero wheel adapter

2. With lenticular wheels clearance may be correct when transmitter ring is glued with silicone sealant directly to the wheel surface

IX. Transmitter magnet will not mount on bladed spokes. Brands: DT, Wheelsmith, and others

A. Use Avocet cadence magnet instead of supplied transmitter magnet

1. Avocet cadence magnet has an adhesive back and a slot it its housing for a cable tie or wire

2. Obtain magnet from your dealer (may be special order from your dealer or order directly from Avocet)

3. Position magnet on flat surface of spoke and press on; secure with cable tie or fine wire

X. Transmitter magnet will not mount on spokes of composite wheels. Brands: Spinergy, Specialized

A. Use Avocet cadence magnet instead of supplied transmitter magnet

1. Position the magnet on the composite spoke

2. Secure with a zip tie through the slot in the magnet and around the spoke

XI. Receiver band is to short to reach around fork leg. Brands: some suspension forks, particularly downhill forks such as Marzocchi Bomber

A. Remove band and attach with zip tie

1. Remove the band screw

2. Clip the band off below the flat rectangular area with heavy scissors or diagonal cutters

3. Run one large or two small zip ties through the hole at the base of the receiver bracket

4. Position on the fork, tighten and trim ties