JoeTBM 

I am trying to see if there is any Shimano comparison charts for their rear DERs.

In the type of work we do we see a lot of broken/mangled rear DERs. We typical buy these in lots for 2-4 pieces but there are so many different versions of the models it makes keeping them all impossible.

Things I would like to see in the chart is cage length, number of speeds, guide wheel tooth counts, type of mounting, etc.

Anyone ever make one of these up or seen one produced by Shimano?

Thanks

Iride01 

If you go to the Shimano Technical Document site and plug in the actual component part number then you can look at the exploded diagram (EV) and it's parts listing and sometimes they indicate other compatible parts for some things.

Though Shimano re-did their site a few months ago and in the process made stuff less easy to find in just a few clicks. However it's still there, you just have to work harder to find it.

Not sure that's really any help for what you are asking though.

cxwrench

I've never seen a chart with all that information. Shimano has their compatibility charts but they don't have pulley size, and type of mount.

Crankycrank

Here is a good article and also a data chart for rear derailleur compatibility. Compatibility [04] Rear derailleurs | BikeGremlin , Bicycle Cassettes & Drivetrains - Google Sheets Doesn't provide every single detail you might want but covers most of what you need to know. Note that Microshift has good quality derailleurs that are mostly compatible with various Shimano groups if you want to save a few bucks.

JoeTBM 

Thanks for the article, there is also quite a comprehensive video about derailleurs there as well. Great for my newer volunteers.

We aren't patrial to Shimano and have seen the Microshift units as well, Prices on ebay are about the same in the $14-$15 range (including shipping), Just ordered another 8 pieces of Shimano via ebay but I will look for Microshift on the next purchase of RDERs

oldbobcat

This is a lot of work for something so esoteric that maybe 10 in a million cyclists will have use for it. And will change every two or three years as new drivetrain "innovations" are introduced. But if you think it's necessary, take charge.

JoeTBM 

Not so much for cyclists but for guys like us (my volunteer shop) that see so many different types of bikes every week. This not really directed to high end components but more towards you big box and average bicycles.

70sSanO

Quick is really in the eye of the beholder. If you have nothing then being able to get some information might be quick.

Shimano docs has an archive section that provides a lot of what you want. Unfortunately it is spread out over multiple docs by year. But in the "Specifications" column you can find charts with RD max cog, capacity and pulley size. It also has FD and crank spcs including max chainring size, chainline, and bottom bracket.

https://productinfo.shimano.com/#/archive

Somewhere on the internet I found an worksheet in excel that provided 1990's FD specs that someone put together. It would have to be a labor of love, but it would be possible to save the specifications documents and export them from a pdf to excel and using Adobe Acrobat (not reader). It would take time going through them to copy/cut and paste them into an excel workbook, with the tabs being different component types.

John