Saint M820 shadow made road compatible?
09-04-18, 10:30 AM
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Saint M820 shadow made road compatible?
I see some great prices on the Shimano Saint M820 dyna-sys shadow short cage rear derailleur. This is the 10 speed, short cage version. I looks like it would be ideal for a triple road crank (52/39/30) paired with a close ratio 10 speed road cassette (say 11-23 0r 12-23). In my brief internet research this morning I see where you could combine the Saint M820 shadow rear derailleur with a Wolf Tooth Components Tanpan 10 inline pull ratio converter. I would be using Ultegra 6700/6703 (or 6600/6603) 10 speed, or Dura Ace 7800/7803 shifters to do this set up.
Is is there something that I am missing that would stop me from proceeding? I would love to retrofit one of my touring bikes with this combination. It looks like it would be rock solid.
Is is there something that I am missing that would stop me from proceeding? I would love to retrofit one of my touring bikes with this combination. It looks like it would be rock solid.
09-05-18, 09:06 AM
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Well Since I got no replies, I thought I would provide this update: I spoke to a person at wolf tooth and he said the the Saint rear derailleur with their pulley device would not really work well as a triple due to not having the cage capacity.
So now I’m thinking of using a mid cage xtr 10 speed model or Deore XT 10 speed model combined with the pulley system from Wolf Tooth...
So now I’m thinking of using a mid cage xtr 10 speed model or Deore XT 10 speed model combined with the pulley system from Wolf Tooth...
09-05-18, 11:22 AM
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The Saint RD is designed for 1x downhill mtb, hence the 25 tooth capacity. The RX800 has a 39 tooth capacity along with a clutch so you can probably run the triple (52-30=22 teeth) and the 12-23 (23-12=21 teeth) if you really needed the triple. I would recommend switching to a RX800 with a compact double 50-34 and a 11-36 cassette which will give you a lower range than your triple at the expense of not being able to go 40 mph at 120 rpm at the high end.
09-05-18, 01:01 PM
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The Saint RD is designed for 1x downhill mtb, hence the 25 tooth capacity. The RX800 has a 39 tooth capacity along with a clutch so you can probably run the triple (52-30=22 teeth) and the 12-23 (23-12=21 teeth) if you really needed the triple. I would recommend switching to a RX800 with a compact double 50-34 and a 11-36 cassette which will give you a lower range than your triple at the expense of not being able to go 40 mph at 120 rpm at the high end.
thanks for taking the time to put forth an excellent drivetrain solution
i may still forge ahead with my 10 x 3 drivetrain (most likely without the clutch rear derailleur. But I still like the idea of converting one of the Shadows (XTR or XT) for this application.
09-05-18, 03:32 PM
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is the RX800 10 speed friendly?
thanks for taking the time to put forth an excellent drivetrain solution
i may still forge ahead with my 10 x 3 drivetrain (most likely without the clutch rear derailleur. But I still like the idea of converting one of the Shadows (XTR or XT) for this application.
Or get bar end shifters that work with 10 speed mountain stuff.
Or Gevenalle’s.
09-05-18, 06:54 PM
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I looked at the Gevenalles when I built my bike. I can't think of a more hideous and ghetto solution to anything. Sure they work. They're only missing duct tape to complete the look.
I got the Microshift bar end shifter that is for MTB derailleurs. I use an SLX with clutch and 1x10. I highly recommend a clutch if you might hit some washboards. They work perfectly and are easy to use. I've ridden "brifters" (god I hate that term) for 20+ years and was concerned I wouldn't be able to adjust. It's been fine. Occasionally I'll shift with my thigh but I'm getting better.
I got the Microshift bar end shifter that is for MTB derailleurs. I use an SLX with clutch and 1x10. I highly recommend a clutch if you might hit some washboards. They work perfectly and are easy to use. I've ridden "brifters" (god I hate that term) for 20+ years and was concerned I wouldn't be able to adjust. It's been fine. Occasionally I'll shift with my thigh but I'm getting better.
09-06-18, 09:50 AM
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I looked at the Gevenalles when I built my bike. I can't think of a more hideous and ghetto solution to anything. Sure they work. They're only missing duct tape to complete the look.
I got the Microshift bar end shifter that is for MTB derailleurs. I use an SLX with clutch and 1x10. I highly recommend a clutch if you might hit some washboards. They work perfectly and are easy to use. I've ridden "brifters" (god I hate that term) for 20+ years and was concerned I wouldn't be able to adjust. It's been fine. Occasionally I'll shift with my thigh but I'm getting better.
I got the Microshift bar end shifter that is for MTB derailleurs. I use an SLX with clutch and 1x10. I highly recommend a clutch if you might hit some washboards. They work perfectly and are easy to use. I've ridden "brifters" (god I hate that term) for 20+ years and was concerned I wouldn't be able to adjust. It's been fine. Occasionally I'll shift with my thigh but I'm getting better.
Personally I have a set of the older, silver “Retroshift” aero shift levers with bosses mounted at the top to accept whichever down tube or bar end shift levers you choose. I have a 3 x 7 setup on my commuter bike that rocks. Not hideous or ghetto, no duct tape required.
I’m using Shimano 105SC shift levers connected to an Ultegra 6503 triple front derailleur and a Shimano 105SC GS mid cage rear derailleur. The 105SC levers, mounted facing down on the Retroshift (now Gevenalle) aero levers are othe opposite of ghetto. A very elegant, reliable set up.
09-06-18, 11:15 AM
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Update: I went ahead and ordered the XTR-M986 10 speed rear derailleur with GS (medium) cage. This is a clutch rear derailleur. I also ordered the Wolf Tooth Tanpan 10 converter so I can use my Dura Ace 7800 shifter. I think I'll try to make this work on my Craig's list project: a Cannondale Silk Tour 800 with headshock. I figure it will bring it more up to date with modern gravel bike type setups while being uniquely "1999" at the same time.
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