The Rear Derailleur EXPLAINER

These have been a brilliant series of videos mate. I really appreciate your attention to detail and diving into the $25 GRX cage update someone mentioned in your comments. I have both a SRAM Eagle mullet (42T 10-52) and a 1x 11spd GRX setup (42T 11-42) that I really miss the SRAM range on. I've installed a Classified Powershift on the GRX bike... but.. it adds a lot of complexity (2x batteries, firmwares, and even having to remember to switch 'modes'). I'll be doing the cage swap option when I can source the parts. Keep up the great work here on the channel, it's appreciated by a lot of people!

Wow, such detailed vid Nolan. Lot of things I didn’t know. I have swapped the 11/34 casette for 11/40 and I use a Shimano RX clutched long cage derailleur and it works fairly well, but the back pedaling when on the 11 tooth cog and 50 in the front (2 bi) does have some issues. My mechanic suggested we change the shim spacer one cassette to 1 mm instead of the 2 mm it had originally. It sure helped. I may need to watch this vid a few time as you spit out so much useful info I can remember all at once. 👏🏼👏🏼

My bike’s 3x gearing technically needs a derailleur with a 55t capacity but don’t tell my bike that because it’s working fine. 😬

Great explanation! Covered all the important points and still challenged the haters in a polite tone in under 8min. Your channel is a well oiled machine.

Thanks for this deep dive! I really want to see people experiment to extend the 2x to larger and large cassettes. Like, what size of cage would be needed to run a say 11-50 AND a 46-30 chain rings for massive range.

I choose to believe that my IG question about using the 810 instead of the 812 was the only inspiration needed for this video and reject any notion to the contrary. 😎 Thanks for nerding out on this! As a fellow nerd, I could watch just about an infinite number of these kinds of videos.

Very nice explanation, Nolan! This is the first time I understand the rear derailleur specs! 👍

Love the nerding out! Love the content!

What a wonderful explanation! Nice one. Cheers.

Thanks for sharing the knowledge! Love your videos!!

Excellent video! One thing I wish you could discuss more is the difference between a cage with an offset upper pulley vs. a cage without an offset upper pulley. 1X RD uses an offset pulley, whereas a 2x RD uses a non-offset pulley. The offset pulley is used to maintain a constant B-gap across a wide range cassette. On a 2X RD the offset pulley can't be used, hence a 2X RD has limited max cog as compared to the 1X RD. We'll need a new invention to allow for both a large max cog AND high chainwrap capacity, something I was hoping to see with the new Shimano 12-speed GRX group. The 11-36 2x cassette just isn't wide enough. I was hoping to see a new 12-speed 11-40 2x cassette and matching RD.

wow how awesome that you have just uploaded that video not one hour ago. i'm just getting into the topic of Derailleurs and your channel was recommended to me. thanks!

Super helpful explanation!

Great explanation of the differences in RD that is very helpful.

Thanks for following up! Awesome vid

Excellent video! Very informative! 👍

Awesome experiment / hack / advice 😎👍 The reason why I am subscribed to your channel 💯

Good stuff Nolan!

Once again another outstanding video and explanation!…thanks for making this and sharing it with us!…😎

Thanks for the video. I've been tryng to see what mods are possible when its time to replace parts and this video answered a bunch of questions i had.