Replacing Brake Shoes
- Remove the wheel, it may be necessary to back off the barrel adjuster (pic a) on the cable to allow the hub to slide off the axle.
- Remove the 10mm domed nut (pic b) that holds the brake operating arm to the pivot and remove the arm by inserting a small screwdriver between the arm and backplate to lever the arm off it’s square mounting.
- Remove the spring clip (pic c) from the static brake shoe pivot by flicking it off with a fine screwdriver or knife blade.
- The brake shoes can now be pulled away from the backplate using a flat bladed screwdriver to ease them off the static pivot.
- Rmove the flat washer from the actuating cam (pic d), clean and replace on the new cam.
- Clean all brake dust and grease off the backplate making sure not to inhale any dust. Regrease the pivots with a high temp melting point grease such as Coppaslip.
- The new brake shoes have a 8mm dome head screw inserted in the static pivot end (pic e), this is sacrificial and is only there to hold the shoes in place during the assembly process, Do not remove it prior to fitting. Place the thread end of this screw against the static pivot and the operating cam through it’s hole in the backplate.
- Using a suitable tube or socket over the dome head of the screw (pic f), tap the shoes down onto the static pivot, forcing the screw out from the shoes. Make sure the actuating cam slides cleanly into it’s hole and the shoes remain parallel to the backplate while they are being tapped down.
- Replace the spring clip on the static pivot, replace the wavy spring washer on the actuating cam pivot and replace the actuating lever and tighten the 10mm dome head nut to retain the lever.
- Slacken the cable anchor screw (pic g) and allow the cable to pull through, screw the barrel adjuster fully up against the back plate (pic h).
- Refit the wheel and adjust the cable using the cable anchor screw first then the barrel adjuster for final fine adjustment.
- when you are satisfied that everything is adjusted and working correctly fit a new 13mm nyloc nut to hold the wheel on and tighten.
- When both sets of shoes have been changed it will probably be necessary to adjust the brake balance so that both wheels are evenly braked when the lever is pulled. There is no trick to doing this just trial and error on a quiet stretch of road until the bike pulls up in a straight line without locking one wheel before the other.
Setting the Tracking
We recommend that tracking is set between 1mm and 3mm of toe-in this will ensure that the steering has a good self centring action without excessive drag or wheel scrub. TIP; aim to get zero and be happy to get it as close to that measurement as possible, it`s difficult to get it exactly on zero.
To set the toe-in the first job is to see what the machine’s current set-up is....you never know your luck, it might be spot –on!
Lets assume it isn’t......the best way to set the tracking is to remove the tyres. Measure the distance between the trailing edge of the two rims and make a note of the dimension. Call this dimension “A” Now measure the distance between the leading edge. Make a note of this and nominate it dimension“B”.
If B is greater than A you have toe-out, if B is less than A you have toe in. Adjust the outer track rod ends either in or out to compensate. TIP One half turn of the outer track rod can mean the difference between the correct setting an an incorrect one.
When checking the measurement at the front and back it is advisable to put a marker on each rim and that you take the measurement at the same point. ie measure the front dimension and then rotate the wheel 180 degrees and use the same point on the rim to measure the rear. It is also very important to take the measurement at exactly the same height from the ground when measuring the front and rear dimension.
Once the tracking has been set check all the various fixings, clamps and fasteners on the machine, put 80psi in each tyre [up to 100psi if you want to go really quick and /or you weigh more than 12stone [168lb]. You are now ready to go out and enjoy yourself, before you do have a quick look at “Riding Tips” on the Windcheetah website, it will give some useful pointers before you start. Congratulations on completing your kit!