# Often asked: How To Install A Chain Tencher On A Motorbike?

## Do I need a chain tensioner for a single speed?

Unless you have plenty of room to adjust chain tension, yes you do need a tensioner. You will find out pretty quick, if you do or you dont, once you start riding it.

## How do you put a chain back on a single speed bike?

Start by putting the chain around the small gear on the rear axle of the bike. Next, place some of the chain on the around the big gear by the pedals on the side facing the seat. (This side should be facing down since the bike is upside down.) Keeping one hand on the chain to guide it, slowly start pedaling the bike.

## What are chain sizes?

Chain standards

Size Pitch Maximum Roller Diameter
41 0.500 in (12.70 mm) 0.306 in (7.77 mm)
40 0.500 in (12.70 mm) 0.312 in (7.92 mm)
50 0.625 in (15.88 mm) 0.400 in (10.16 mm)
60 0.750 in (19.05 mm) 0.469 in (11.91 mm)

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## Where do you put chain tensioner?

Always place a tensioner on the slack side of the drive. A tensioner on the outside should be 1/3 of the center distance from the small pulley or sprocket. On the inside, the tensioner should be 1/3 of the center distance from the large pulley or sprocket.

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## How do you calculate the breaking load of a chain?

The WLL is calculated by dividing MBL by a safety factor (SF). An example of this would be a chain that has a MBL of 2000 lbf (8.89 kN) would have a SWL or WLL of 400 lbf (1.78 kN) if a safety factor of 5 (5:1, 5 to 1, or 1/5) is used.

## What is the purpose of chain tensioner?

A tensioner is a device that applies a force to create or maintain tension. The force may be applied parallel to, as in the case of a hydraulic bolt tensioner, or perpendicular to, as in the case of a spring-loaded bicycle chain tensioner, the tension it creates.

## Do you need chain tensioner?

2 Answers. You don’t need a chain tensioner (by this, you presumably mean something like the Surly Tuggnut and not a pulley which will snap on a fixie). If you are very lucky even a vertical dropout frame won’t need a tensioner but as chains stretch over time this probably won’t hold true for long.

## What chain should I use for single speed?

If you have a single – speed bike or one with internal gears, the chain type will be 1/8″ in internal width. In this category you will find cruiser bikes, urban bikes, fixies or models with internal gears, among others. If you have a bike with a derailleur, with 2 to 11 sprockets, you will need chains of 3/32″.

## How often should I change my bike chain?

To avoid this accelerated wear of your cassette and chainrings, a general rule of thumb is to replace your bike’s chain every 2,000 miles. Mind you, this is just a starting point. No two chains will wear at exactly the same rate because no two riders treat their chains the same.