Hammerhead and Shimano no more.
#26
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That said, I do have a Garmin computer and Di2, but I've never tried to set up any of the Di2 metrics on screen. I should really have a play around.
#27
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Not a good look for the industry in general. Maybe Shimano is attempting to align themselves with Specialized. 
Or maybe another fitness tech company. How big is Wahoo? Or Polar for instance? Maybe the Shimano portfolio is about to get larger.

Or maybe another fitness tech company. How big is Wahoo? Or Polar for instance? Maybe the Shimano portfolio is about to get larger.
Last edited by seypat; 05-27-22 at 06:05 AM.
#28
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Could be anything. Maybe Shimano doesn't feel their agreements with Hammerhead for name use of Di2 and such cover all the implications SRAM brings to the party. All of the above might be in play too.
Perhaps at a later date they'll iron everything out in a new agreement and the world will be at peace again. <grin>
Perhaps at a later date they'll iron everything out in a new agreement and the world will be at peace again. <grin>
#29
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I did my one and only firmware upgrade to Di2 in anticipation of doing this, but I lost interest when I realized it would be a net drain on the battery (oh, the irony) and I would have to buy some extra parts. I've never missed not having this. I shift by feel, anyway.
#30
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I just looked at DC Ray Maker's video review of this:
#31
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Stupid business move on the part of Shimano. It might even be a violation of consumer law in some regions, especially since it sounds like they are forcing HH to remove functionality in extant devices that the consumer paid for upon purchase, with a firmware update.
Karoo owners are losing:
- the ability to see their battery level
- shifter mode display
- front and rear derailleur indications
- ability to cycle through the data screens using the buttons hidden in the hoods
I'd have to say that I like the Karoo far better as a bike computer over Garmin than I value the things that are being lost. So if I had to pick, knowing what I know now, I'd still go the same route. But, if I were trying to do a paper evaluation before buying a bike computer, this might give me pause. But I think more importantly, if I were making a bike purchase, this would more heavily influence my choice of drivetrain and make me much less likely to buy something with a Shimano drivetrain.
I believe in order to make the Di2 integration work with the computer you have to license an encryption key from Shimano to unlock the data and make it readable because they use a special data format different from SRAM or Campagnolo which are standard ANT profile. Like most software licenses it can be revoked based on whatever the original agreement was (i.e. not competing directly with Shimano). Using the key without an agreement would be a theft of IP, and SRAM would probably lose in court.
Edit: Added to say DC Rainmaker has a good summary. It does seem like a dumb move by Shimano.
Note that when you starting using your cycling computer (brand doesn’t matter here) you probably agreed that you did not own any of the software on the device but only had a license to use it and the company retained the right to modify or change it as they see fit. Might be that Shimano will try to shake down the cycle computer companies for more money for this license. Many of these disputes are resolved with someone coughing up more cash.
Edit: Added to say DC Rainmaker has a good summary. It does seem like a dumb move by Shimano.
Note that when you starting using your cycling computer (brand doesn’t matter here) you probably agreed that you did not own any of the software on the device but only had a license to use it and the company retained the right to modify or change it as they see fit. Might be that Shimano will try to shake down the cycle computer companies for more money for this license. Many of these disputes are resolved with someone coughing up more cash.
Hopefully that over-caffeinated product manager has some adult supervision straighten this out. Not a good move.
#33
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Either way, probably an issue for some (undoubtedly) but almost certainly not for most Karoo users. The most significant loss still remains the shifting fields as I had said before. I follow this closely on the Karoo forums and the whole button issue is virtually never mentioned.
#34
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I heard a rumour this was a lawyer or investor or something putting a foot down, saying Shimano can't share private information about how their electronic drivetrain works with a company (owned by another company) that makes electronic drivetrains. I have no way to know if this is true, and it seems a little goofy since SRAM is shipping them, they're not trying to figure out how to make one and eager to steal the secret.
If true, that's not a minor licensing issue that would be solved by more money.
If true, that's not a minor licensing issue that would be solved by more money.
#35
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Personally, I'm disappointed that Shimano is being a bad citizen. But I've been happy with all of my Shimano bikes. If I was somehow forced to only ride a SRAM bike, I would just take up running instead.
I think this will be a minor blip that people (except KDi2 uses) will forget in a month. People don't choose their drive train to fit their computer.
I think this will be a minor blip that people (except KDi2 uses) will forget in a month. People don't choose their drive train to fit their computer.
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#36
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It's a shame Shimano have taken this stance, I fully agree with DC Rainmaker. Personally however, it makes zero difference to me - I don't use those functions; I don't need my computer to tell me what gear I am in, for example, so my Shimano-equipped bike isn't going to suffer and while my SRAM-equipped bike will still have those functions, I don't care. I have never checked to see the battery levels either, I simply charge them regularly.
On the subject of updates though, they aren't all about corrections to fix things that have come to light with general public use. HH update 2x a month with functionality upgrades that make it better each time. When the HH2 was launched, it was a nice unit as it was, I preferred it to my Garmin 530. It was comparable to its competition at its price-point immediately. Since then, it has had many firmware updates - thanks in part to it being Android based - that have improved the device immensely.
For example, HH have released the latest update today, and, besides the expected DI2 removal, it adds this, among a few other things for crits etc :
I've never been interested in software updates until relatively recently thanks to two products I own - the HH2 and its twice monthly upgrades (they are upgrades) and my Canon R5 camera where Canon have released some great updates to improve AF.
On the subject of updates though, they aren't all about corrections to fix things that have come to light with general public use. HH update 2x a month with functionality upgrades that make it better each time. When the HH2 was launched, it was a nice unit as it was, I preferred it to my Garmin 530. It was comparable to its competition at its price-point immediately. Since then, it has had many firmware updates - thanks in part to it being Android based - that have improved the device immensely.
For example, HH have released the latest update today, and, besides the expected DI2 removal, it adds this, among a few other things for crits etc :
- Auto-Lap Pins can be placed whenever you press the lap button, as well as at the start of recording. A new lap will be marked whenever you ride through those points again in the same ride.
- Unique to Karoo, Auto-Lap Pins that are placed while moving will only trigger if you ride through them in the same direction, preventing incorrect laps being marked if the course doubles back on itself.
I've never been interested in software updates until relatively recently thanks to two products I own - the HH2 and its twice monthly upgrades (they are upgrades) and my Canon R5 camera where Canon have released some great updates to improve AF.

#37
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Personally, I'm disappointed that Shimano is being a bad citizen. But I've been happy with all of my Shimano bikes. If I was somehow forced to only ride a SRAM bike, I would just take up running instead.
I think this will be a minor blip that people (except KDi2 uses) will forget in a month. People don't choose their drive train to fit their computer.
I think this will be a minor blip that people (except KDi2 uses) will forget in a month. People don't choose their drive train to fit their computer.
I was a Shimano fanboy for decades. I wound up with eTap bikes because I converted an older mech bike to electronic shifting and eTap was far and away the cleaner choice for that (no need to run wires in a frame not set up for it). I was pretty surprised how well it worked and how much I liked it that I converted my Ultegra Di2 bike over to eTap when I got a great deal on a groupset. Anyhow, that all surprised me greatly and I have to say I've been pretty happy with it.
It's a shame Shimano have taken this stance, I fully agree with DC Rainmaker. Personally however, it makes zero difference to me - I don't use those functions; I don't need my computer to tell me what gear I am in, for example, so my Shimano-equipped bike isn't going to suffer and while my SRAM-equipped bike will still have those functions, I don't care. I have never checked to see the battery levels either, I simply charge them regularly.
For once though, I managed to find my way to not get whacked by these industry moves. Usually, I'm the guy that finagles my way into the worst possible position for a consumer. Somehow, I managed to tiptoe between the raindrops on this one.