Hello,

I want to add a dynamo hun SON 28 to my Trek 520 2016 Disc.
I want to ride with my Samsung Galaxy S7 :Samsung Galaxy S7 edge - Full phone specifications on a Supernova The Plug III
Do you think it is compatible?
Do you an idea of what Dynamo is compatible with this phone?

Thanks

You could use any 3W hub dynamo from Schmidt, SP, or Shimano. SON hubs seem to be very dependable, but SPs are as well and are a third of the price. If you go with SP, the PD-8 is their 3W hub (the SD-8 is only 2.4W).

You could use any USB charging device. Here's an article: List of Bicycle Dynamo Hub Power Supplies for USB Devices - CyclingAbout CyclingAbout

Your phone will charge through its USB power cord. You may not get much or any charge with your dynamo light turned on.

Virtually all of the hubs are designed for German bicycle lighting laws for 3 watts for both front and rear lights, 2.4 watts if for the front only. So, the hubs come in either of those two electrical outputs. (This was mentioned above, I am just explaining why the standardized output.) Thus, all the hubs would be compatible. Some hubs are more reliable, some more efficient than others. And the prices vary a lot.

But, USB ports could be where you find the most differences, as there is no legal standard for them, some have better waterproofing, some more efficient than others, some might not work well with Apple products, some have a cache battery while others don't, some provide a little more wattage than some others, some headlamps have a USB port built in and others are USB charger only.

For charging a smartphone, you want either an external cache battery or a charger with a battery built in so it keeps charging when you stop at a stoplight.

I have the SP PV-8 hub (that model hub does not work with discs), AXA Luxx 70 Plus headlamp with built in USB port (not sold in USA, I ordered it from Europe) but does not have a cache battery.

But you will find a dozen different recommendations.

Thanks a lot for your answers !

Can you tell me where i can buy Dynamos from Montreal Canada?? there are a specific website i can use for that? Wiggle ?

Thanks

Peter White is the NorthAmerican distributor -imported for Schmidt,

But Of course you can buy Retail in Germany or UK and have them ship it.

Either way You pay Import Duty.. to Customs Canada.

SJS Cycles not Wiggle in UK for Schmidt & B&M, though there are French And German sellers too ..

https://www.bike24.com [D]

https://www.xxcycle.com/ [F]

Lets not forget starbike.com

The plug is a neat idea but reviews are so-so (no cache battery, not very efficient). Sinewave's reactor is said to be more efficient but has no cache battery. Not fatal - you can probably easily insert a battery pack between your phone and the charger, but then you lose the simplicity of plugging your phone to your steerer. On their site, Sinewave make a strong case for their approach.


Forumslader is a DIY project that looks like a good candidate for kickstarter. Reports suggest that it is (by far) the most efficient USB charger, the design can accommodate a battery (there is at least one) and it comes in several designs, including in-steerer.

If you do not want to order parts and build your own from plans, you can have a unit shipped from Germany for roughly 175 euros.

I've ordered one. Will post once I've installed and tested it.

cOOl ! thanks for all the links!
I have this one https://www.bike24.com/1.php?content...menu=1000,2,98
i choose disc SON 28 because i have a TREK 520 with discs but i have to choose the number of holes? What is that?

Thanks again

It is the number of spokes your wheel has.

Are you having someone build the wheel for you? They should be able to tell you what you need.

I have ordered from Bike24 a couple times, have been very happy with the results. The shipping charge however at 20 Euros (to USA) was rather expensive, so I spent some quality time on their website to see if there was anything else I might want, since adding a few more things did not increase the shipping cost. I ended up getting a helmet rain cover, a compression stuff sack, and a few other things that are very hard to buy in USA.

Thanks for the answers !!!
I will buy lot of things ion bike24.com

If packing the bike for a Trip , by boxing it. the center-lock front disc is easier to remove than the 6 bolt.

From what I read; seems the new Delux is lower drag, but , the new 28 is better for powering more than LED lights
(switched off for charging other things )

& extrawheel trailer not only can take 2 panniers, but another front wheel with another hub-dynamo.

Talk to the folks at Peter White Cycles. That is where I got my SON 28, and tail light as well. Now here's the thing with charging that I found out on tour last year. Start out every morning with a full charge. Plug in while you are riding to keep the charge up- if you are using a cycling app for instance, I have a WaHoo RFLKT and used the Cyclemeter app. If you are riding a lot in the mountains, you will not be charging up hill, as you will be pedalling too slow. You must be going at least 12 mph to charge, and maintaining that speed or better for long periods of time. When you are going downhill, the dynamo will charge up the cache battery first, then switch over to charge your device. By that time, you may be on your way up the next hill, and not charging again. On the flats, it worked very well, and it also did well in rolling hills that were short ups and downs. The other issue I had, was I was always plugged in. If you are intending on using your phone as your primary camera, you will be constantly be plugging in and unplugging, and after a week of that 20-30 times a day it gets annoying. But that will depend on how many pictures you take or even if you use your phone as a camera. I also took a full size DSLR, but uploading pictures took forever, if it got done at all. So carrying a couple cards took care of that problem.