Free fotobanka : vinobraní, jízdní kolo, pneumatika, zblízka, motor, Raleigh, 3speed, pracovní stůl, klika, svěrák, žádné drama, cotterpin, cotteredcrank, střelná zbraň, auto part, automobilový průmysl v pneumatikách 2100x1500

No drama cotter pin removal There are few bicycle repair procedures as irritating as removing the crank cotter pins from old English or European bikes. Most people try to hammer them out, which all too often ends in tears. The best way to remove the cotters is with a purpose-made tool. The French ones that looked like big bolt cutters aren’t made any more, but they do show up on eBay from time to time (expect to pay dearly). The only modern tool I know of is the crank cotter press is offered by Bikesmith bikesmithdesign.com/CotterPress/ for US$55. If I were to be working on old bikes regularly, that’s the tool I’d buy. But I don’t do this very often and chances are you don’t either. Which means you’re already eyeing that cotter pin with a great big claw hammer in your hand. My advice: don’t do it. If you can’t use a proper tool, here’s the next best thing. No drama cotter pin removal: Ingredients: 1. Big vise, firmly bolted to a workbench 2. 3/8 socket (I used a 13 mm) 3. Safety glasses 4. Helper 5. Long breaker bar, to increase leverage. Step 1 Unscrew the nut on the cotter so it is flush the top of the pin. This will help distribute the load over a larger area of the pin and help prevent the soft metal from mushrooming. Step 2 With your helper’s assistance place the bike on the vise, so the crank is between the open jaws. Step 3 Hold the open end of the socket around the blunt (non-threaded) end of the cotter and slowly close the jaws of the vise. Step 4 Ensure the cotter pin is square in the jaws – if you apply force catawampus, you’ll likely bend something and not get the pin out. Step 5 With your helper steadying the bike, tighten the jaws of the vice. If the pin does not move after you have tightened the vise as much as you can, increase leverage with a breaker bar or other extension of the vise handle. Do not hammer on the vise handle. Step 6 The pin may come loose with a pop. Remove the bike from the vise, remove the nut and the pin should come out with your fingers. Step 7 Re-installation is similar, except the socket will cover the threaded end of the cotter. You can’t get a cotter pin tight enough by tightening the nut (you’ll strip the threads first). Ensure everything is clean, mating surfaces lightly greased and lined up square before you press-in the cotter. Tighten “snug” but don’t mushroom the head. Remember: cotter pins are installed as mirror images of each other (the pin on one side of the bike points down when the pin on the other is pointing up), so the crank arms end up exactly 180 degrees apart.

Na fotografii zdarma high-rozlišení vinobraní, kolo, jízdní kolo, pneumatika, zblízka, motor, Raleigh, 3speed, pracovní stůl, klika, svěrák, žádné drama, cotterpin, cotteredcrank, střelná zbraň, auto part, automobilový průmysl v pneumatikách

, odebraných v Canon PowerShot G9 01/15 2017 Snímek pořízen s 8.0mm, f/2.8s, 1/6s, ISO 200