Оригинальный сообщение: Tom Shafer ,
Hold the wheel off the ground, crank it by hand, and shift all gears from High to Low. You are testing from slack cable to tight cable. Successful? -No- Check for chain-shifter problems and adjust all cable fittings. -Yes- Hold the wheel off the ground, crank it by hand, and shift all gears from Low to High. -Now you are testing from tight cable to slack cable. ---Successful? ---No- Replace the worn-out twist-shifter. It is un-able to hold the cable tension. ---Yes- This tells us you weigh too much ! or... maybe the chain is stretched. Note: Old-school cables would quickly lose their 'stretch' for lack of oil.