I just started playing with Synchro and Semi-Synchro shift on my DI2 setup. I don't see any compelling reason that the two modes must be mutually exclusive. Is there some way to have both functions active together?
Semi-Synchro and Synchro-Shift together?
kestrel242
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The cassette choice is based on the RD part number. If you're not seeing the newer gen cogsets, I'll guess you aren't using the new-for-2017 Di2 parts. Same way the crankset gear choice locks out based on road vs MTB HTII parts based on what FD-line you use.
And aside from Garmin's "Gears" readout...what Di2 think the gearing is matters not at all IRL.
Please help me out with full synchro settings.
After a bit of a debacle, I've now updated the firmware on all my devices, precisely so I could check these setting, since Kestrel persuasively argued that it was do-able.
I can SELECT all sorts of gear points when creating a settings file, but the end result is always a file with an "!" icon added to it. And I'm unable to drag that file into one of the slots.
I've tried a dozen different arrangements, and the only ones it accepts are when the big to little FD shift point is chose at either the largest cog or the second to largest.
I'm making sure not to violate any other rules as specified by SteveB: my gear ratio jumps are small, etc.
I don't get it.
EDIT: Just to add, I've now confirmed this in the eTube setting on the Windows app. That app just lets you drag the FD down shift point with the cursor, but the ONLY options are 1st gear and 2nd gear (28 or 25); you can't drag it lower than that.
In the iOS eTube app I can choose those gears when creating a custom configuration, but it will not let me use that configuration.
I'm really at a loss as to how others are getting this to work.
After a bit of a debacle, I've now updated the firmware on all my devices, precisely so I could check these setting, since Kestrel persuasively argued that it was do-able.
I can SELECT all sorts of gear points when creating a settings file, but the end result is always a file with an "!" icon added to it. And I'm unable to drag that file into one of the slots.
I've tried a dozen different arrangements, and the only ones it accepts are when the big to little FD shift point is chose at either the largest cog or the second to largest.
I'm making sure not to violate any other rules as specified by SteveB: my gear ratio jumps are small, etc.
I don't get it.
EDIT: Just to add, I've now confirmed this in the eTube setting on the Windows app. That app just lets you drag the FD down shift point with the cursor, but the ONLY options are 1st gear and 2nd gear (28 or 25); you can't drag it lower than that.
In the iOS eTube app I can choose those gears when creating a custom configuration, but it will not let me use that configuration.
I'm really at a loss as to how others are getting this to work.
In case it's not clear, here's what I'm talking about. The first image is the custom full synchro map I've created. It's simple, reasonable, and doesn't violate any Shimano rules. The second image is what you get when you save that map, and the ! means it can't be used.
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I get the same results when using eTube on both iOS and Windows 10.
I have also tried saying I have a 53/39 or a 52/36 up front, and I've tried 11–32, 12–23 and everything in between at back.
No matter what I try there is one hard and fast rule: I cannot set a FD downshift that occurs in anything other than the largest or second-to-largest cog.
My only guesses now are:
1. Some people are using older firmware than I, and it's allowed for them but not for me?
2. Perhaps people are creating the setting file but not actually adding it?
I get the same results when using eTube on both iOS and Windows 10.
I have also tried saying I have a 53/39 or a 52/36 up front, and I've tried 11–32, 12–23 and everything in between at back.
No matter what I try there is one hard and fast rule: I cannot set a FD downshift that occurs in anything other than the largest or second-to-largest cog.
My only guesses now are:
1. Some people are using older firmware than I, and it's allowed for them but not for me?
2. Perhaps people are creating the setting file but not actually adding it?
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What? So my last gen Ultegra won't include the HG800 because ... it's a last gen derailleur and this is a current-gen cassette? Wow, that's like having a old pump that doesn't work on 29ers. It doesn't even make any sense, a firmware update should bring it in line.
Whatever, sounds like Shimano thinks they're Apple or something.
Naturally.
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I see what you're saying. I just spent an hour trying to duplicate your intended map and couldn't make it work. My best guess is that's a bug in the software.
Thanks for taking the time! It wasn't for nothing, since now I'm slightly more confident that I'm not going crazy!!
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E-tube really is like iTunes some days. The HG800 exceeds the tooth-count spec for 6870 (GS is 32T max)...so it probably will never show up. I plugged an 8050RD into my rig and 11-34 appeared right away.
I have yet to make sense of Shimano's arbitrary lockdowns of certain things based on cog tooth count. 6870 had it too. IIRC 52/36 only had 2 multishifts allowed whereas 53/39 and 50/34 had 3.
Well, Shimano has always taken a Big Brother approach in terms of deciding what's best for the consumer, witness the whole line of cassettes starting at 11. Who actually needs that ?.
I think with certain aspects of Di2 they are asserting that with the consumer having control of the number of chain links installed, that damage can occur if the R derailer cannot take up the chain in certain combo's, thus they limit the combo's to a safe range.
They are essentially unable to trust the home installer to follow guidelines.
OK, in middle of an 8050 upgrade install and very frustrated.
1) The iPhone app seemed useless, then I downloaded the PC app and connected via the battery BCR2
Here's the issues:
- No ability to set to manual shift mode, synchro or semi seem to be it
- No 11-23 cassette option, in any crank type.
- No indication of battery charge on app's
- How to set to Gear Position Control adjustment ability for Do Not Set ?, this would let me manually use the 12 cog in manual mode, which I can not configure.
I mean is Shimano kidding ?, this is Nanny State BS
Unhappy with this
1) The iPhone app seemed useless, then I downloaded the PC app and connected via the battery BCR2
Here's the issues:
- No ability to set to manual shift mode, synchro or semi seem to be it
- No 11-23 cassette option, in any crank type.
- No indication of battery charge on app's
- How to set to Gear Position Control adjustment ability for Do Not Set ?, this would let me manually use the 12 cog in manual mode, which I can not configure.
I mean is Shimano kidding ?, this is Nanny State BS
Unhappy with this
As to the first issue: there is nothing to 'set' in manual mode, so the app doesn't deal with that. The app configures settings for semi and full-synchro, and then when on the bike you use the junction box to toggle between the 3 modes. So this one isn't an oversight on Shimano's part.
As for all the other stuff: I can't help you there! Like you, I'm growing disappointed with Shimano's implementation of the di2 firmware and software interfaces.
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1) Read the junction box manual.
2) The cassette option is honestly just fluff functionally, beyond the Garmin Gears field.
3) I don't think the app has ever had a battery status indicator
4) GPC is based on your crankset choice....for whatever reason.
Yes, you guys are correct that you can set to manual in the A Junction.
I could be crazy but I think the app’s are flaky as I’ve seen the ability to set to manual mode as well as setting gear position. If you set Synchro and semi off in app, you could then choose Gear Position to not set, thus gaining the ability to use the 2nd cog.
I’m tinkering tomorrow. Can’t do it tonight. I put on a new Shimano 11spd chain and it doesn’t come with a connection pin (might have fell out of the box, who knows) So off to the LBS where I got a KMC 11spd Missing Link, only to discover that unlike any other (SRAM) type link, it needs a special tool to install.
Good thing the weather sucks.
Had a revelation last night that it matters not, in some respects, as to what cogset and crank the system is told you are using.
I told my system I had a 53/39 crank as well as a 12/25 cogset, was then able to turn off Gear Position, which now lets me use any cog and any chainring. As well, it opens up the synchro setting moves somewhat, and you can play with that.
The conundrum of cheating the Di2 system.
1) Shimano has discontinued producing my favorite cassette, the 11-23 (they could not explain why), thus you have to cheat Di2 by telling it you are using a 12-25. Sucks as I like this cassette for flat Long Island riding as it has one tooth jumps from 11 to 19. It's still usable in Di2 (and available to buy), but see below.
2) If telling Di2 you have a 34/50 crank, the system will not allow access to the 2nd smallest cog, what Shimano calls the 10th cog. They state this is to prevent cross chaining, yet it's allowed on other cranks. They won't change this limitation. I asked.
3) The results of the above are that you also need to lie about the crank, a 36/52 will allow access to the 10th cog.
4) When viewing the cog/crank gear locations on a Garmin or whatever, the readout is incorrect as to the Gear Combo. When you are in a 34/12 it's actually saying 36/13. Makes the whole point of getting this readout on your computer somewhat useless. This is a nit-pick somewhat, until you recall what the system costs.
5) Shimano is truly being Big Brother with this and is yet again choosing what works for the masses and not allowing much in the way of customization.
1) Shimano has discontinued producing my favorite cassette, the 11-23 (they could not explain why), thus you have to cheat Di2 by telling it you are using a 12-25. Sucks as I like this cassette for flat Long Island riding as it has one tooth jumps from 11 to 19. It's still usable in Di2 (and available to buy), but see below.
2) If telling Di2 you have a 34/50 crank, the system will not allow access to the 2nd smallest cog, what Shimano calls the 10th cog. They state this is to prevent cross chaining, yet it's allowed on other cranks. They won't change this limitation. I asked.
3) The results of the above are that you also need to lie about the crank, a 36/52 will allow access to the 10th cog.
4) When viewing the cog/crank gear locations on a Garmin or whatever, the readout is incorrect as to the Gear Combo. When you are in a 34/12 it's actually saying 36/13. Makes the whole point of getting this readout on your computer somewhat useless. This is a nit-pick somewhat, until you recall what the system costs.
5) Shimano is truly being Big Brother with this and is yet again choosing what works for the masses and not allowing much in the way of customization.
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What is annoying about the Garmin readout...you can customise your gears in your Garmin itself and have them read correctly....BUT...it resets after every ride.
Also note that only the cog tooth count and ratio fields are effected....that cog position readouts still work fine.
Yes, I discovered that last night that the whenever the Garmin does it's BT connection with Di2, it grabs the configuration out of Di2, over-writing what you changed on Garmin.
As well, Di2 does not keep it's BT running and at some point senses no connection and shuts down. Thus every ride you need to do a Garmin to Di2 manual connection. Maybe a good thing Di2 shuts off BT as it saves the battery.
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