Shimano hub dynamo DH-2R35-E replacement

[@theovangerven7801]

Thnx. It made me do the disassembly instead of going to a professional repair shop as instructed in the manual that came with the bike. Especially your diy tool prevented me from hammering.

[@AndrewNewton]

Glad it helped Theo. I didn't really know what I was doing but it's still working after 2 years,

[@justinkorbmacher5304]

This self made tool worked excellent! 💪 good video, to the point !

[@AndrewNewton]

Thanks 👍

[@mikael2568]

To repair it you don't need to buy a complete assembled parts unless you work in a bike shop and you have to repair it "as new". You just needed to catch the eletric cable and welded it on the positive circuit. The negative pole is can be catch on the axle.

[@47f0]

Thank you. I kind of hate the attitude of Shimano (and others) that there is no such thing as user servicing. Seeing it can be done is half the battle. One question - @o:24 it looks like something is cocked at a pretty serious angle. Is this the hub insert or stator that's angled? Is this just some looseness that gets corrected when installed and adjusted?

[@AndrewNewton]

Thanks. Just parts lose before it's all bolted on.

[@jacobtomra5062]

@andrew: They're excellent for touring, I would say perfect:-) Never running out of batteries, which when you are touring, can be hard to find and annoying to haul around! I toured with one three years ago, I did not feel ANYTHING when it was turned on. Only downside is that they dont last forever. Im sure newer ones are even lighter and more durable, especially if you cash out more than the 25€ I did!

[@pekkasaarinen2902]

Opened a Shimano hub dynamo that had worked for 3 years and then gone dead. It was so full of some gunk that I couldn't even make the innards budge let alone come out. The axle was the only thing that was rotating. It had probably torn itself free from the rest of assembly at some point. So I can't replace the innards without some serious solvents and/or power tools. Probably a time to buy an new front wheel. :)

[@AndrewNewton]

Ha, sounds like its had some serious use and abuse.

[@nigelnightmare4160]

There is something that can be done. It's called regular MAINTENANCE and it would never have got that bad. You remind me of my stepson, he would buy a new car for work (£25-30K) and run it into the ground then buy another when it broke down! and moan about never having any money! He went through three brand new cars in one year! When he went to the garage the fourth time they refused to trade in his old car, they were quite willing to sell him a new one though because he was a good customer that paid cash! I took his third car, spent £3697.00 repairing and cleaning it. then proceeded to cab it for three years putting over 150,000 miles onto it. Then traded it in against a new one for £8495.00. I earned between £900-£1200 a week, he earned a lot more. He did sort of learn to maintain the car I used to book it in for service and repair to be collected on his day off. It took a while before he stopped moaning about it. After we traded them in at 100,000 miles or 2yrs for £12-£15K. The moral MAINTENANCE pays for itself & manufacturers/retailers love people who don't do it. Your Safer too with a well maintained bike. What would have happened to you if you'd been riding your bike and the front wheel had collapsed? Best case. "Face plant on the road" Worst case. You end up under a lorry/bus (DEAD OR CRIPPLED). For your own wellbeing look after your bike properly.

[@keaixiaomeinv]

I know I'm late to the party, but thank you so much for this video.

[@AndrewNewton]

Glad it's still useful.

[@felixescober6798]

Is this tested? I mean is it durable? How about on light trail? Will it stuck up

[@AndrewNewton]

Almost 10 years and they are both still working. Cant understand the rest of your question

[@AndrewNewton]

sauroman1 - Good for touring? Probably not. They are heavy and always producing drag but I'm no expert.

[@team3383]

Depnds on how fast you want to tour I suppose..... I've been doing so for many years with bags etc and if a little friction and 100 grammes weight is an issue to you then I'm sure you're not touring. One thing I find amazing is the number of people who shrug off these dynamos before ever having used them for the above reasons when if they actually cycled around more they could easily loose the extra weight they talk about themselves. Would do most of them some good too ! Thanks for the video. very helpful.

[@nigelnightmare4160]

Heavy: they weigh the same as a full water bottle! When you're touring how much luggage are you loading onto the bike in KG/Lb's? For normal day to day riding there are better, Lighter, less draggy ones, usually costing 10-20x as much. You can get a wheel with one built in for £30. Draggy! It's the same as riding up a 1 foot in a mile or with a 10kph(6mph) headwind on the same bike without the dynamo hub. 2-5W extra. Basically unnoticeable in normal use. I.E. speeds up to 30-40kph (20-25mph). From +50kph(30mph) the drag/resistance quickly increases (8-10W) but most people will only do those speeds downhill. How many times do you only ride on the flat or downhill.

[@robolykan5991]

You will never be able not unscrew that ring with a diy tool like that unless it is loose already.

[@brandonwolf2803]

Any way to upgrade the bulb on this? My current one flickers

[@AndrewNewton]

Just checked mine. LED is glued on to the reflector so maybe it comes as one unit.

[@hassanhombi849]

شيمانو.احسن.صنع.في. العلم.صح.اولعمال.تحياتي ممتاز.في.جميع.درجات

[@AndrewNewton]

Shimano is good

[@thra5herxb12s]

The damage wouldnt have affected the function in any way unless the terminals had been torn out.

[@محمدزروقي-ش1ش]

I followed the instructions step by step but it didn't work for me

[@AndrewNewton]

Start again

[@sauroman1]

Are hub dynamo's good for touring?

[@sauroman1]

+Flavius J Well I have now experience with them. But I don't like drag they create which is not possible to switch off and really useful only during night. Magnic light seems like better alternative.

[@47f0]

@@sauroman1 - Magnic Lights Physics 101: There ain't no free lunch. Any energy you get from a bike generator system in electrons comes from your legs. Period. The notion that Magnic lights are somehow "dragless" is nonsense. Magnic lights absolutely cause drag, and because your rim is not optimized as a generator component, the drag losses between the energy you put in, vs the electricity you get out are actually worse than that of a dynamo hub, the components of which are all optimized to act as generator components, rather than designed to connect your tire to your spokes. In short - your bike rim was never designed to minimize eddy current and hysteresis losses with the accompanying drag - the stator of a dynohub is. The only reason that Magnic lights are even rideable and are somewhat low-drag (only somewhat) is that their output is pathetic - max claimed lumens is 40, which is devastatingly inadequate for any real need to light up the road. Even a mediocre dynamo headlight is good for over 300 lumens. So yeah - if you want to generate a tiny amount of light as inefficiently as possible while spending a ton of money, while not having any choices as to which headlights and tailghts you want and where you want those lights mounted... then yeah, I guess Magnic Lights are just spiffy. As far as the generator being "really useful only during night", I consider arriving at my campsite with my phone, laptop and camp lights fully charged to be massively useful., one of many perks of having a dedicated generator, that can act as a charging station during the day, and provide as many hours of lighting as you need at night, without ever having to worry about the condition of your battery light's charge. I find the whole "OMG!! TEH DRAG! TEH DRAG!" whining to be more than a bit specious. Would I feel "TEH DRAG!" I were on my Pinarello Dogma F10, wearing skin-tight spandex and I had to get to a finish line a few seconds faster than my opponents? Sure I'd feel it - but I'm not doing that. I've been visiting a friend in the country and stayed longer than I intended, or I've had to work late and the sun's getting low and I've got miles to get home. Partway through the ride, my little Axa Blueline 50 decides it's dark enough, kicks on and lights up the road all the way home. Yeah, I "feel" something then, too. Feels pretty good. To the OP, avalon - no, dynamo's aren't good for touring - they're essential. Having toured once on a friend's bike with a dynohub, I've never since even considered doing a tour without a hub dynamo (technically, they're magnetos, not dynamos, but whatever). If you start to think of bicycles as vehicles, rather than as expensive hobby toys that let you pretend to be Lance Armstrong, then you realize - would you buy a car or road motorcycle that didn't have a charging/lighting system? In much of Europe, it's not even something you'd consider - having a charging/lighting system on a bike is as normal as having an alternator in your Audi.

[@robolykan5991]

@@47f0 If that was the "in short" version, it's about time you look for a publisher to spread the long version ; ))

[@47f0]

@@robolykan5991 - Yet, paradoxically, had I actually used the phrase "in short" (which I didn't), my post would have been even longer...

[@glebkovalenko4298]

​​​Динамо втулка незаменима для длительных походов и если ты круглый год катаешся на велосипеде. С электроникой от Пашкова Владимира ты забываешь о всяких фонариках. Свет всегда с тобой и бортовое питание тоже. ​​​home.onego.ru/~pashkov/electro/dynamo.htm​

[@arturd.ferreira5431]

Muito bom o vídeo

[@sebastianvasquez3513]

wait... you replace all the stator only for the electric contacts?. Maybe it's easiest replace all the bike hahahaha

[@AndrewNewton]

They were smashed beyond repair and the stator was cheap.

[@nigelnightmare4160]

Electrical contacts and right hand cone are not available to buy on their own, therefore replacing the internals is the only repair option from Shimano. Shimano also state that the right hand bearings are not serviceable, so when they wear out you are supposed to buy/replace the internals. HTH

[@AndrewNewton]

Bought online from bicikli dot de

[@gatekeeper84]

This is a replacement, not a repair. I suggest you change the video title. Imagine I would come to repair your wife, but would replace her instead. You would not be happy. I hope you now understand the difference between the two, and how your video title is misleading.

[@AndrewNewton]

Good suggestion thanks. You are correct.

[@jerbievillaluz]

ok

[@jacobtomra5062]

@andrew: They're excellent for touring, I would say perfect:-) Never running out of batteries, which when you are touring, can be hard to find and annoying to haul around! I toured with one three years ago, I did not feel ANYTHING when it was turned on. Only downside is that they dont last forever. Im sure newer ones are even lighter and more durable, especially if you cash out more than the 25€ I did!