My fully upgraded Dahon Speed D7, or Dahon Speed D7 squared, has a 2x7 drivetrain

After multiple test rides, repairs, and upgrades, I am excited to share my completed 2006 Dahon Speed D7 folding bike upgrades. I added a 2x crank (Sugino 52-40), sealed bottom bracket (VP-BC73 68x127.5mm), front derailleur (Shimano Claris FD-2300) with adapter (Litepro), rear derailleur (Shimano 105 RD-1055) with adapter, quick release axle, Shimano RevoShift (SL-RS35) front friction and rear indexed grip shifters, and Ergon GS3 bar ends. The bike rides fantastically and the combination of wider gearing and better ergonomics (bar ends) really helps with acceleration up hills. I still need to cover the existing rim tape with Velox cloth rim tape, but I can't wait to take this for longer tours around DC and elsewhere. It's great to have a hybrid bike that folds and fits in a car trunk.

[@ivans3806]

Very cool video, thanks for sharing. You're very knowledgeable and articulate the information very well. Good quality edu-tainment!

[@walnuthills11]

Thank you! You are very welcome! Glad you enjoyed it!

[@10OZDuster]

I've been hunting to find one exactly like that....btw you still have your dahon classic? nice upgrade on the crank and the 105 RD is quite an upgrade a high end Shimano derailleur. agree with you hubs being too tight from factory....first thing i do on mine is check and adjust those as well.

[@walnuthills11]

Thank you! I really love this bike. Sadly I no longer have my three-speed Dahon. I sold it to someone in Columbia, Maryland early last year.