rear derailleur recommendations
 

I have a 1x9 spd drive train with a Microshift Advent rear derailleur on a bike I’d like to attach my Extrawheel trailer to. The trailer attaches to ball mounts that are part of the quick release skewer ends.
So, the issue is that with Shimano Deore derailleur the gear shift housing stop is attached to the derailleur far below the derailleur mounting bolt so the Extrawheel trailer arms easily clear the cable housing stop on the derailleur. But with the Advent rear derailleur the cable stop is above the mounting bolt interfering with the arms and severely limiting how much vertical drop the trailer can have before smashing into the derailleur housing stop damaging it and causing mishifts.
What I am looking for is a rear derailleur with a conventional low gear housing attachment point but can handle at least a 46 tooth if not 51 tooth rear cog. Just looking at pictures it looks like Box has a derailleur that might work but that’s just looking at a picture. This is for a bike I’ve put a midrive Bafang motor on and is used off road 95% of the time.

Most trailers attach only to one axle the opposite side of the derailleur, not both, for the exact reason to avoid going near the derailleur.

I'd rather get another trailer before hacking up a bike I like.

Can you offset the trailer mounting spacers to add additional clearance on the drive side? For example cut the NDS spacer in half and add to the drive side. Basically offsetting the whole trailer a bit to one side without changing the arm spacing or skewer length requirements.

Extrawheel sells adapters that let you fit their trailers to both QR equipped bikes and Thru-axle type bikes.

https://extrawheel.com/manuals/

You should read and see if you need one of them.

If it came down to the point of hacking up my bike, I too would look for another trailer. Unless my bike is already a $50 POS.

I don’t see how changing derailleurs is hacking up. The bike had a Deore derailleur that I changed to Advent, I could go back to Deore and lose the lowest gear but I’d prefer not to do that.

Don’t think that’ll work as the tire clearance is pretty close for the offset needed.

Thx, I’ll look that over. If changing derailleurs is hacking then I’ve been hacking bikes for 50 yrs.

I and perhaps others didn't even understand exactly why changing the DR would help.

For me in this case a picture or two of the bikes rear triangle and maybe with the trailer mount near it would maybe make it clearer to us why there is an issue.

Though this is the first bike trailer I've seen that was attached on both sides of the axle. Not that I have any experience with any or have looked at more than a very few of them.

#6 in the manual describes adaptor for derailleur interference clearance

​​​​​​https://extrawheel.com/wp-content/up...truction-5.pdf

Imagine a couple of slender arms on either side meeting at the rear axle where it can pivot on a ball/socket joint. . On the right side the arm crosses where the derailleur housing goes from chainstay stop to derailleur at it’s lower hinge of the parallelogram mechanism. The trailer arm can pivot up and down without hitting anything as would occur riding over deep bumps. With the Advent derailleur the housing stop is located above the derailleur mounting bolt so that if the rear wheel is high above the trailer the trailer drops down onto that high mounted housing stop. If you look at a picture of the two derailleurs you can see there’s a couple inches difference in housing stop location.
Sorry if my explanation isn’t clear enough.

Thanks much! I assumed the 2.4” tires wouldn’t allow that much offset as it’s kinda close but who knows I’ll give it a try. Appreciate your assistance.

You're making design mods to a bike that has nothing wrong with it for the purpose of an aftermarket trailer that is of poor design.

But hey, do whatever you want, it's not my bike :D

A picture of your actual bike and attachment would do wonders for clarity

Seems Wolf Tooth, Problem Solvers, and others make living off of this.

Here's the thing.

I love my bikes more than you do.

Thanks for your concern, but I'm good they way they are all stock.

aint that the truth

I never trust a mechanic whose bikes are all stock ;)

Soya, you sure have some strong opinions on the topic but you might consider that changing a component is not a design modification nor a “hack”.
If you bought a road bike that came stock with 25 mm tires and you wanted to put on 28 mm tires that is neither a design modification nor a “hack”. If you bought a bike with a rear derailleur that can handle a max cog of 28 teeth it’s not a design modification or hack to replace it with a derailleur of larger cog capacity. Btw the Extrawheel is a good design that’s why I’m using it.

Don't be so worried about what one thinks is a hack. Some of us might not like the color of your bike. Just take the advice that works for you and ignore the rest.

I not at all concerned with your bikes, I believe this thread was about the OP's bike, and their opinions on bicycle modifications and seeking suggestions to adapt it to their needs, situation, and budget.