TWIN LEADING SHOE BRAKES
\nA step by step guide to a super stopper.<\/p>\n
1. Assemble all new parts likely to be needed before doing
\nanything – usually shoes and cable.<\/p>\n
2. Remove wheel and note relationship of cams, levers and springs
\nbefore stripping back plate completely. If cam ends are not
\nstamped with an alignment mark, it helps to refit the levers
\nin the right place to pencil one on before stripping out.<\/p>\n
3. Clean all parts of dust and old hard grease. Note the warnings
\nabout Asbestos these days – wipe drum out with damp rag and then
\nseal rag in a plastic bag, not use the airline on it!<\/p>\n
4. Decide which parts to replace wheel bearings,
\nshoes, springs, cable etc.<\/p>\n
5. Assembly – lightly grease cams, and check smooth rotation
\nin back plate. Fit levers and any return springs in correct
\nposition using marks on end of cams and recheck for smooth rotation.
\nPit shoes, ensuring leading edge of linings has a chamfer to prevent
\ngrabbing.<\/p>\n
6. Fit back plate to wheel, ensure speedo drive aligns with hub.
\nReplace wheel in forks leaving all fasteners finger tight.<\/p>\n
7. Inspect cable. It cannot be emphasised enough how important
\nthe cable is to a good brake. It must be the correct length, with
\nsmooth flowing bends. Ferrules must fit tightly and nipples and
\nlevers fit snuggly. The tighter a cable has to bend, the more the
\nouter sheath opens out. This gives a spongy feel when applied as
\nthe outer concertinas under pressure.<\/p>\n
8. Push on short arm of the double ended brake lever to apply one
\nbrake shoe. Hold arm in this position by adjusting cable wingnut.<\/p>\n
9. Fit balance rod to double ended brake lever. Slacken lock-nut
\nto allow adjustment of the clevis ends – note one end will have a
\nleft-hand thread.<\/p>\n
10. Push on other brake lever with equal force as in (\u00b78) to apply
\nother brake shoe. Adjust length of balance rod so clevis pin can be
\ninserted whilst maintaining equal pressure on both shoes. The cams
\nare now synchronised. Tighten balance rod locknut(s).<\/p>\n
11. With brake dragging, rotate wheel to ensure lost motion taken out
\nof brake anchorage. Apply brake hard to centralise linings and
\ntighten all axle nuts and clamps. Check all nuts, remember to replace
\nsplit pins in clevis pins, axle nut and brake cable end.<\/p>\n
12. Adjust brake cable so shoes are not binding, carefully
\nroadtest and recheck everything for tightness. Now that you can
\nstop – how about making the bike go faster?
\nCLIVE LEESON<\/p>\n","protected":false},"excerpt":{"rendered":"
TWIN LEADING SHOE BRAKES A step by step guide to a super stopper. 1. Assemble all new parts likely to be needed before doing anything – usually shoes and cable. 2. Remove wheel and note relationship of cams, levers and<\/p>\n