PERFECT Chainline Every Time скачать в хорошем качестве

PERFECT Chainline Every Time

Get perfect chainline every time on your bike! Chainline is about getting the front chainring in a straight line with the rear cog. Perfect chainline means no dropped chains and less chain noise. It isn't vital to the mechanical efficiency of a bike but it is very important for fixed gear bikes for safety. Generally, the rear wheel chainline cannot be changed unless you change the dish, so the front chainring, crank and bottom bracket must match the rear wheel. ....................................................... Example Front Chainline Calculation DOWNTUBE TO CHAINRING (OUTSIDE TO OUTSIDE) = 76 MM DOWNTUBE WIDTH = 53 MM CHAINRING WIDTH (THICKNESS) = 4 MM FRONT CHAINLINE = 76 - (53/2) - (4/2) = 47.5 MM ....................................................... Example Rear Chainline Calculation DROPOUT WIDTH (INSIDE TO INSIDE) = 120 MM REAR COG TO DROPOUT (INSIDE TO INSIDE) = 14 MM REAR COG WIDTH (THICKNESS) = 2 MM REAR CHAINLINE = (120/2) - 14 - (2/2) = 45 MM ....................................................... Correction: 3/32" chains are 5, 6, 7, and 8 speed chains, not 9 speed chains. 9 speed chains are 11/128" and may or may not work with a 3/32" chainring/cog depending on the thickness of the sprocket. Tip: If you use freewheel spacers, check how many threads are normally used without them first! If too little threading is remaining your freewheel could become loose and mess up the wheel hub threads. You may only be able to use 1mm or 2mm of freewheel spacers. Pro tip: Make sure the crank arms are tightened all the way onto the frame per torque spec because if they are a little too loose it might still be able to go a few more millimeters inboard, which will change your front chainline. Link: Chainline https://www.sheldonbrown.com/chainlin... Link: Chainline for singlespeed and fixed gear https://www.sheldonbrown.com/chainlin... MORE BIKEBLOGGER https://www.youtube.com/c/BikeBlogger... My Bikes http://bikeblogger.com/site Subscribe for More Cycling Videos http://www.youtube.com/subscription_c... --------------------------------------------------------------- BIKEBLOGGER'S BIKE STUFF --------------------------------------------------------------- Camera http://amzn.to/2BVQHcM Computer http://amzn.to/2BT2Vmt Front Light http://amzn.to/2ADIg7B Rear Light http://amzn.to/2kwZX2M Mirror http://amzn.to/2y8Q5NL Fender http://amzn.to/2DbYfbx Water Bottle http://amzn.to/2AEOO65 Brake Levers http://amzn.to/2IM352E Handlebars http://amzn.to/2j4yl4P Bar Tape http://amzn.to/2kx9pTI Pedals http://amzn.to/2j4GRR1 Saddle http://amzn.to/2A1gsJv Tires http://amzn.to/2kxPuns Tire Levers http://amzn.to/2mFDCxk Chain Tool http://amzn.to/2Dqqiav Helmet http://amzn.to/2DaUpiU Gloves Summer http://amzn.to/2riGANS Gloves Winter http://amzn.to/2DmwsZ1 Gloves Fall http://amzn.to/2Bdyn1y Sunglasses http://amzn.to/2kz3Mo4 --------------------------------------------------------------- Support the BikeBlogger channel, use my affiliate links so we can both get more bike stuff! http://amzn.to/2B0dwOV __ BikeBlogger Bike Trails    • Creve Coeur Park Trail Bike Ride   BikeBlogger City Cycling    • Rain Is Depressing? Let's Bike Tonight!   BikeBlogger How To Videos    • How To Bicycle Maintenance Videos   BikeBlogger's Bikes    • My Chinese Carbon Fiber Rain Bike!