Shimano Di2 Maintenance?
01-17-23, 01:46 PM
#51
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01-17-23, 04:43 PM
#53
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Is that what you meant by "brick"? If you meant 120V to USB adaptor, well duh, yeah. Why the eff would you use a pc or laptop?
01-17-23, 07:09 PM
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"Why can't you turn the nipples to true your disc wheel?"
01-17-23, 07:18 PM
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Huh? I have built both disc and rim brake wheels. Why wouldn't you turn the nipples to true a disc wheel?
01-17-23, 07:34 PM
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but what happens if he doesn’t have the time to wax a chain? I mean you have to clean it, put the wax in a pot, melt it, throw the chain in let it reach the 176 degrees or what ever the standard is now, wiggle it pull it out let it dry, break it in and then put it on the bike.
That was exhausting to type.
If only there was a thread that explained in fully on the best way to wax a chain.
01-17-23, 10:22 PM
#60
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is also the interface that Shimano's Di2 programming software needs to communicate with the battery and Di2 components like shifters and derailleurs.
So it isn't unreasonable to charge the battery in the same way. However, not all PCs have USB ports capable of delivering a stable current, especially laptops, and this (or an inferior 120V AC to 5.5 V DC wall wart) is a common cause of incomplete or failed charging.
01-17-23, 11:06 PM
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01-18-23, 06:55 AM
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Interesting point!. I have a spare power adapter (model: HW-050450E00) from an old huawei phone with those stats:
Input voltage (INPUT): 100V-240V 50 / 60HZ
Output voltage (OUTPUT): 5V (Volt) 2A (Ampere) or 4.5V (Volt) 5A (Ampere) or 5V (Volt) 4.5A (Ampere)
can be okay with charging my di2?
Input voltage (INPUT): 100V-240V 50 / 60HZ
Output voltage (OUTPUT): 5V (Volt) 2A (Ampere) or 4.5V (Volt) 5A (Ampere) or 5V (Volt) 4.5A (Ampere)
can be okay with charging my di2?
I am also on the ''bad electrical engineering'' side.
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01-18-23, 07:09 AM
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If you need to charge your bike, cannot find a brick but your laptop is sitting there, what are you going to do? It's got this USB port that connects beautifully to your charger. You start charging and then go to bed and shut the laptop cover without thinking about it.
If Shimano is going to release a USB-capable charging product, it needs to work safely with ALL USB ports, laptop or other. FULL STOP. It's also not that hard to do just a little more expensive.
As far as how the lower current can cause a fire, I'm speculating, but it likely goes back to a crappy charger design. The dc-dc convertor in their charger is probably becoming unstable at low current levels and dissipates all the incoming power as heat rather than passing it into the di2 battery.
If Shimano is going to release a USB-capable charging product, it needs to work safely with ALL USB ports, laptop or other. FULL STOP. It's also not that hard to do just a little more expensive.
As far as how the lower current can cause a fire, I'm speculating, but it likely goes back to a crappy charger design. The dc-dc convertor in their charger is probably becoming unstable at low current levels and dissipates all the incoming power as heat rather than passing it into the di2 battery.
+1 for the crappy charger design though.
01-18-23, 07:37 AM
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Anyway, this makes me glad I chose SRAM AXS as I've been charging the SRAM batteries from my desktop pc.
01-18-23, 07:52 AM
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Because I have a PC and laptop sitting right on my desk (typing this reply) and they have loads of USB ports. So I'll turn your question 180 deg and ask why the eff would I bother plugging a "brick" USB adaptor into the wall when I've got half a dozen USB ports right here on my computers?
Anyway, this makes me glad I chose SRAM AXS as I've been charging the SRAM batteries from my desktop pc.
Anyway, this makes me glad I chose SRAM AXS as I've been charging the SRAM batteries from my desktop pc.
01-18-23, 08:37 AM
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01-18-23, 10:22 AM
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I also prefer the SRAM interface. However, in terms of build quality and smoothness, Ultegra DI2 is above SRAM Force, and that's why I stay with Shimano. I also prefer the fact that you can just plug the bike so it recharges the hidden battery, while with SRAM you need to remove 2 batteries and recharge them (and more often than Shimano). Shimano is also generally more expensive, but man, Ultegra and DA are pieces of art.
Never tried SRAM Red, though!
Never tried SRAM Red, though!
01-18-23, 10:56 AM
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I also prefer the SRAM interface. However, in terms of build quality and smoothness, Ultegra DI2 is above SRAM Force, and that's why I stay with Shimano. I also prefer the fact that you can just plug the bike so it recharges the hidden battery, while with SRAM you need to remove 2 batteries and recharge them (and more often than Shimano). Shimano is also generally more expensive, but man, Ultegra and DA are pieces of art.
Never tried SRAM Red, though!
Never tried SRAM Red, though!
I can believe Shimano build quality is above SRAM, but I'm very happy with SRAM Force. It was faultless for me last season and I much prefer it to the Shimano 105 R7000 on my other bike - mainly due to the electronic shifting and paddle interface. I haven't ridden the latest Di2 groupsets, but they do look good.
01-18-23, 12:42 PM
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With SRAM, you remove the batteries and take them to the charger, yes? Is it the same with Shimano, or do you have to bring the charger to the bike?
01-18-23, 12:54 PM
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Hook the charger to the bike. You could remove your battery and take it to the charger, but that would get old the first time.
01-18-23, 12:56 PM
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Or the bike to the charger. My bikes hang on hooks in my basement. I have a countertop with an AC power tap and USB taps, the Di2 charger plugs in there, as does the SRAM AXS rear derailer battery charger, and my Garmin and Hammerhead USB C charger cables. I move my Di2 bikes to the charger and plug in.
01-18-23, 02:39 PM
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I park my bikes near my workbench in the garage. I keep a couple wall warts (capable of delivering adequate amperage, thank you very much) plugged into the wall outlets, with the necessary cables plugged in. When I need to charge my lights, computer, or bike (DI2), I've got everything I need right there. My bike also has the bar-end junction box, so the bike just leans against the workbench. It's convenient, since (for some reason), I only get about 400-500 miles before my system is down to 30% or so -- which means I'm charging it every few weeks if I'm not riding my other bikes very much.
01-18-23, 02:52 PM
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You could take the Shimano battery out, but since it fits inside the seat tube, it's easier just to take the bike to your power source.
01-18-23, 03:27 PM
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Thanks for that tip. One of my riding buddies said exactly the same thing. So I'm now always careful not to push down on the battery when clipping them in. I can see how the tabs could snap off if you didn't pay attention.