Velogical Rim Dynamo, Schmidt Edelux II Combination
10-21-15, 09:27 AM
#51
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now I'm wondering if I should get the velogical for my fatbike, probably one of the models optimized for slower riding.
10-23-15, 07:26 PM
#52
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Well, I can tell you I like mine quite a bit, especially because when you are not using it there is zero drag. But if you plan to use it all of the time I say go hub dyno. The Velogical does make a whine when running, but functionally it works very well. The mounting is a bit Rube Goldberg until you have it dialed in, but very solid after that. You also do not want to use a Velogical (or any other rim or tire dyno for that matter) if you get the rims covered in heavy mud or snow as that will interfere with the dyno contact.
Last edited by dwmckee; 10-23-15 at 07:38 PM.
10-23-15, 08:11 PM
#53
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Having a hub Dynamo when you don't need it is not a liability except for the cost. The drag is negligible.
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10-24-15, 07:08 AM
#54
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Negligible is negligible, but zero is, well zero. It depends what you want. I have read that the no load drag on a good dyno hub is about equivalent to a five foot climb over a mile distance. That is not much on a ten mile ride, but if you are riding a century that day you will be climbing an extra 500 foot hill.
Alll of that aside, the other benefits of the Velogical are that you can stay with what ever hub you want and do not have the time and expense of building it into a new wheel, and you can select a unit that is optimized for your riding style so when in use you only generate the power you need (and do not continually ground excess power that yoy generated back to earth).
Alll of that aside, the other benefits of the Velogical are that you can stay with what ever hub you want and do not have the time and expense of building it into a new wheel, and you can select a unit that is optimized for your riding style so when in use you only generate the power you need (and do not continually ground excess power that yoy generated back to earth).
10-24-15, 12:23 PM
#55
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Sure, it fills a niche, and that's great. I think it was a long time coming, especially since installation is so much easier than for a dynohub. That is the chief advantage. Lower drag when not in use is not a significant advantage. 500 feet over a century is still negligible. It sounds significant, but it's not.
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10-24-15, 12:57 PM
#56
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Adding to a Hub dynamo scheme..
It can be used just for a USB charger , so you can use lights at the same time ..
It can be used just for a USB charger , so you can use lights at the same time ..
10-25-15, 06:26 PM
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10-26-15, 07:31 AM
#58
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Either OR I Suspect, but not the 6v3w '/, 2 electrical output , for lights and charging at the same time .
thus I say Added to, rather than 'robbing peter to pay paul', .. one dynamo for each equal power demand.
not 6w of load & only 3w output.
thus I say Added to, rather than 'robbing peter to pay paul', .. one dynamo for each equal power demand.
not 6w of load & only 3w output.
11-02-15, 06:44 PM
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The unit I have puts out 4 watts at 20 kph and 5 watts at about 22 kph (see our actual output chart on the first part of the post). That works perfectly for me. If you are not able to maintain that speed, they make another unit with higher output so you can size to your needs and not generate excess. A hub unit that puts out more has the excess output grounded back to the hub, which to me is a waste of your energy. I really like that I can buy the unit sized to my needs and not buy a higher output hub and ground the extra energy back. When you are generating excess power, it has to come from somewhere, which is your legs.
03-26-16, 10:01 PM
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07-08-16, 08:27 AM
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I'm looking into doing some Brevets with it, have you ridden such long rides? Or better what was the maximum amount of hours you had it working? Some people say the noise disappears in the wind at 22kph, others that you always hear it. In any case my Shimano dynohub vibrates my handlebars and I think that's worse.
Any comments on riding in the rain and the durability of the o-rings? They are a bit opaque about telling you what they are made of -- "special compound for fast riders"
BTW: Gilles Berthoud designed a prototype holder/support for this dynamo.
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Last edited by mariachi; 07-08-16 at 08:43 AM. Reason: added link to new holder
07-09-16, 11:13 PM
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I mounted mine on the front fork at first then switched to the rear as the noise was a lot less hearable on the rear. You have to mount it exactly parallel to the wheel rim for it to be as quiet as possible (very sensitive to careful mounting position). I mostly used it just for hour long nite rides but I believe it should be no problem for longer rides. No problem at all in the rain. It comes with a thin and a thick O ring. The thicker ring was quieter. I love the fact that it has no drag at all when disengaged. I was happy with the dyno, but on a new bike I just switched to powering a DC Edelux headlight with a battery pack.I mostly used it just for hour long nite rides but I believe it should be no problem for longer rides.
07-09-16, 11:19 PM
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The noise definitely gets drowned out by wind at about 15 MPH or more.
12-18-16, 06:18 AM
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I've heard the noise this thing makes on a few YouTube vids, and unfortunately for me, the noise would be unbearable. otherwise I might have bought one.
12-20-16, 02:40 AM
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12-20-16, 05:18 AM
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12-20-16, 06:36 AM
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If I do see someone making a video review with footage I'll link it here
12-20-16, 11:30 AM
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Yes, and no. On your results only two videos are actually of the dynamo and in only one of them do you actually see the bike with the unit. All other videos are of the Velospeeder motor, which looks exactly the same as the dynamo, just beefier.
If I do see someone making a video review with footage I'll link it here
If I do see someone making a video review with footage I'll link it here
