Look Who it Was Random video

Front Derailleur And Chain Length 2X1 Commuter Bicycle Part 5 Bike Blogger

1,809 views · Published 7 February 2016 · 5:05 · Indexed 8 November 2026

Channel: BikeBlogger · 2016 · People & Blogs

Watch on YouTube

Clamp the front derailleur onto the bike's seat tube (or screw it onto the braze on if you got one on your bike frame). Mount it so the bottom of the chain guide outer plate is 3mm or closer to the large chainring vertically. The chain guide must also be parallel with the chainring.

Low limit screw adjustment: With the chain on the smaller chainring - screw in clockwise to move the cage away from bike, screw out counterclockwise to move the cage toward the bike. Get it very close but not touching the chain - keep turning until you hear the chain hit the inner plate of the chain guide cage when spinning the wheel, then back it off a tiny bit.

Proper chain length can be figured out using an online chain length calculator, using your known bicycle chainstay length, largest front chainring and largest rear cog. My chainstay length is 43cm, and with a 46t chainring, 16t rear cog, and rear derailleur (chain tensioner) I use a chain with 51 links (102 half links). You could use a longer chain because the chain tensioner can take up additional slack, but there is no reason.

Link - Chain Length Calculator
http://www.machinehead-software.co.uk/bike/chain_length/chainlengthcalc.html

Playlist - 2X1 Speed Commuter Bike Project
https://www.youtube.com/playlist?list=PLEZf1_jDCYJ3E-G7vG7nky6GnxGoZ98nz

Thanks for watching! And please subscribe!
http://www.bikeblogger.com

More from this channel