Sunrace 8-Speed Freewheel

Product Information

All recent freewheels and threaded hubs, regardless of where made, use ISO threading. The older British and Italian standards use the same thread pitch but a very slightly different thread diameter, and are generally interchangeable. However, for strong riders and on tandems, it is best not to mix and match -- freewheels sometimes do strip the threads of aluminium hubs. A French freewheel may start to thread onto an ISO/British/Italian hub but will soon bind. An ISO/British/Italian freewheel will skim the top of the threads of a French hub and will slip forward if an attempt is made to use it. Do not force a freewheel -- you will ruin the hub.

SRAM "ESP" or "Exact Actuation" derailers and shifters (generally designated by a decimal model number: 7.0, 8.0, 9.0 etc) can only be used if the shifter and rear derailer are both ESP. A Jtek ShiftMate pulley adaptor can make a SRAM shifter work with a Shimano derailer, or vice versa. All SRAM 10-speed derailers and shifters are of yet a third type.

Shimano 105 Cassette CSR7000 11 SPEED 11-28 tooth

Within a given brand/style of rear derailer, all "speed numbers" are generally interchangeable. This applies to all indexable models, basically everything manufactured since the late 1980s. There are a few exceptions: Very early Freehubs (sometimes identifiable by the absence of the typical bulge on the right end of the hub barrel) which have non-interchangeable bodies. The Freehub body of these hubs is held on only by the axle bearings, and will slip off once the axle is removed. The earliest Shimano Freehubs, however, used a more primitive construction. There was a set of splines to keep the body from rotating on the hub shell, but instead of a hollow bolt to secure the body to the shell, there was a smooth cylindrical projection past the splines, and the corresponding Freehub body was a slip fit over this projection. The axle held the assembly from falling off, but the design was not fully satisfactory. The Freehub body could burnish the projecting sleeve, and loosen. You could now clamp the inner body in a vise by the pawl recesses, and unscrew the wheel. This is how to remove a freewheel when you can't use a freewheel remover. Removing the inner body makes reassembly of some freewheels easier, but there is some possibility of damage from the vise jaws. Although the most common Shimano bodies are interchangeable at the hub shell, you may have further complications due to incompatibility between your right side cone and the dustcap that comes with a replacement body. The dustcaps can usually be pried out and interchanged, or you can buy an appropriate right cone to match your new ratchet body.

In practice this "problem" almost never materializes. Many, many cyclists are using 9- and 10-speed chains with older cranksets and having no problems whatever. New Chainrings, Old ChainsGoing the other direction, using wider chains with chainrings intended for narrower chains is not generally a major problem if there's only a one- or two- generation difference. The only problem you might run into is that the chain will be more liable to rub on the inside of the bigger chainrings in the small/small crossover gears, gears you shouldn't be using in any case.you don't need to buy the spacer, because you can use the spacer that came between the original flat 13 and the 14.) A 5-speed freewheel or Suntour Ultra-6 will work with the 120 mm rear dropout spacing that was usual in the 1970s. A 7-speed freewheel needs at least 126 mm spacing, but only steel frames are likely to have narrower spacing, and they can usually be cold set to spread the dropouts. You also may need to redish the rear wheel-- see article on frame spacing. To convert to a cassette, you would have to replace the rear wheel. and 7-speed hubs generally use 126 mm spacing, while 8-/9-speed hubs use 130 mm (road) or 135 mm (MTB/hybrid). My 1984 Record Ace now has a triple with 26/36/46 and a 10 freehub with a 32 on the rear.Old age does not come alone! Yes, 8-speed freewheels do exist. One example is the DNP 8-Speed Screw-on MTB Bike Freewheel, which offers smooth shifting, lower noise, and improved performance compared to factory freewheels. 2. Are all 8 speed cassettes compatible?