Velogical Rim Dynamo audax u not.

[snilard]

And running the o ring off the brake surface is not to spec.

And what bout disk brakes? There is not any braking surface on dick specific rims.

 

[jond]

It may be better when mounted on rear but I don't like that I hear my dynamo. I have some cheap Shimano on my T50. I cannot feel that it is slowing me. I can see it on GPS but cannot feel it. But on Vendetta I hear the dynamo and thus I feel that it is slowing me. And this is realy bad feeling on such a fast bike.


I was in conversation about slippage with manufacturer and It is known issue for them.
I was testing it with pretty heavy load on dry rim. Load much heavier than 1 LED front light. I wanted to suck as much as possible. It is slipping even with light on wet rim.
I changed my mind how I would like to use the dynamo. My loads will be much lighter. So I may rethink the position in future.


No I didn't. I didn't wanted to have cable between main frame and bike front-end. I have normal version. I wanted to have high enough voltage from as low speed as possible.
Another concern with the dynamo what I have is that it has usable voltave for my electronics from about 15 km/h. Right now I have provisional setup with 2 LEDs front light connected via diode bridge directly to dynamo (with thermistor) and when I ride uphill I am neerly blind because dynamo cannot deliver enough power at such high voltage needed for 2 LEDs.
One of reasons why I bought the dynamo was that it has completely different voltage/current characteristics than classic hub dynamo I have found that this characteristic is not suitable for my purposes without buffer battery between dynamo and light.

I’m only running one light the iq x. 100 lux off dynamo and maybe I’ll fit a pedal pal sic........... I’ll run wiring inside frame. Don’t want to drill holes though . Even disc brake rims have generally a flat surface. Ogando claims slippage is no issue. I reckon your dynamo position is fraught with issues. If your wheel is slightly ovalised or even changing direction (wheel flexion lateral movement ) will cause that slippage you are experiencing. Running it on flat surface is to specifications.Regarding the noise issue and perception of effort. Typically with load it’s 1.5 to 3 watts taken from your legs depending on exact dynamo. So not a great impost. I’ll use ear plugs if noise bothers me unduly. I guess I’ll find out and thanks for your detailed response.

 

[jond]

My review.

I fitted the dynamo to the rear running wiring through frame. I store pedalpal sic in frame bag.

The clearance for dynamo was tight. I use ultegra caliper not in the aero position. Couple mm clearance using large o ring. So not for dirt roads.

I can’t comment on how it will fair in heavy rain but have ridden in showers and wet roads with no issues a few times.

Positives

Small lightweight unobtrusive easy to operate and nil impact on daytime riding if you so choose .

I have zero slippage and think snilards installation not to specification. Snilard move your dynamo to rear.

Powers my light iq x and cache battery . Have not checked charging cache battery at same time.

Overall cheaper and lighter than son hub.

Negatives.

The dynamo emits a noise like a hairdryer on low low albeit quieter. I initially had (like snilard) the feeling of being slowed down ( I am not). Impact is less than 1.5 watts when on. And zero when off. Not counting the 75 grams of weight.

Now the noise is almost to me soothing and I am largely unawares. But for some this noise might be an issue. At 25 to 30 it is barely noticeable thereafter wind noise largely drowns it out.

You need to choose the dynamo model correctly. The sport model is for faster riders and full lighting is available from 12 klm/ hr.

The variable resistor ( a globe ) needs to be positioned so as not to distract.

Recommended for audax fast weight weeny riders. And commuting.

Light

The iq x light is great but like any shaped beam is foreshortened when turning very tight corners. There is enough light for me to ride fast. The bracket on the light is only fair. But it can allow under or over installing. There is a noticeable improvement over ixon premium in terms of available light but the close light phase is largely wasted On vendetta rider but would help motorists etc see cyclist.

Pictures are on my strava profile. Jonathan Daniel .I’m part of the cruzbike strava club.

 

[super slim]

My review.

I fitted the dynamo to the rear running wiring through frame. I store pedalpal sic in frame bag.

The clearance for dynamo was tight. I use ultegra caliper not in the aero position. Couple mm clearance using large o ring. So not for dirt roads.

I can’t comment on how it will fair in heavy rain but have ridden in showers and wet roads with no issues a few times.

Positives

Small lightweight unobtrusive easy to operate and nil impact on daytime riding if you so choose .

I have zero slippage and think snilards installation not to specification. Snilard move your dynamo to rear.

Powers my light iq x and cache battery . Have not checked charging cache battery at same time.

Overall cheaper and lighter than son hub.

Negatives.

The dynamo emits a noise like a hairdryer on low low albeit quieter. I initially had (like snilard) the feeling of being slowed down ( I am not). Impact is less than 1.5 watts when on. And zero when off. Not counting the 75 grams of weight.

Now the noise is almost to me soothing and I am largely unawares. But for some this noise might be an issue. At 25 to 30 it is barely noticeable thereafter wind noise largely drowns it out.

You need to choose the dynamo model correctly. The sport model is for faster riders and full lighting is available from 12 klm/ hr.

The variable resistor ( a globe ) needs to be positioned so as not to distract.

Recommended for audax fast weight weeny riders. And commuting.

Light

The iq x light is great but like any shaped beam is foreshortened when turning very tight corners. There is enough light for me to ride fast. The bracket on the light is only fair. But it can allow under or over installing. There is a noticeable improvement over ixon premium in terms of available light but the close light phase is largely wasted On vendetta rider but would help motorists etc see cyclist.

Pictures are on my strava profile. Jonathan Daniel .I’m part of the cruzbike strava club.

If there are NO PHOTOS, then it did NOT happen!
Could the 2nd globe (variable resistor) actually be in a second narrow beam headlight to create the extra light when going fast?

 

[snilard]

I store pedalpal sic in frame bag.

What is pedalpal sic?

I can’t comment on how it will fair in heavy rain but have ridden in showers and wet roads with no issues a few times.

Have you tested spraying water directly to rim?

I have zero slippage and think snilards installation not to specification. Snilard move your dynamo to rear.

I will test it but give me some time. I have to drill my mount and make custom bracket to be able to fit it to rear stay.

 

[snilard]

@jond Can You, please, share photos of your cable routing?

 

[jond]

If there are NO PHOTOS, then it did NOT happen!
Could the 2nd globe (variable resistor) actually be in a second narrow beam headlight to create the extra light when going fast?

There are photos on strava

No the variable resistor is a high wattage bulb so as not to fail and visually the element barely glows at 35 much more than an indicator light.

I’ll try upload some photos later.

 

[jond]

What is pedalpal sic?

Australian made electronic ac to dc plus cache battery no longer in business.


Have you tested spraying water directly to rim?

No but I don’t think contact is the issue for me. I don’t want to test the unit for overall ability to cope with inundation. I think your slippage issue is related to position on your rim so any lateral movement allows o ring to be off surface. I have taken corners fast and weigh more than yourself. 32 spoke wheels no issue.

I will test it but give me some time. I have to drill my mount and make custom bracket to be able to fit it to rear stay.

Best wishes. My replies within.

 

[jond]

@jond Can You, please, share photos of your cable routing?

I’ll try.

I did not drill frame any new holes but enlarged the brake cable boss for rear caliper at front. Seems to be aluminium not plastic. What a great frame.

From dynamo I followed stay and over Velcro seat pan. My seat is bolted down front rear. The seat hides wiring unless you turn bike upside down.

Up through frame out aforementioned front brake boss with rubber grommet protection.

Follow rear brake cable outer along boom to first unused in my case water bottle mount boss.

Enter boom and exit at existing hole at bottom bracket.

I used a longer bolt to mount my light and used extra length to position variable resistor. The boom hides glow from resistor but to checking is easy.

 

[jond]

Dynamo position close to brake pad but clears with 2-3 mm. I guess aero position could be used.

 

[jond]

Final thoughts for now.

I would recommend this dynamo for fast light weight weeny audax night riders not necessarily looking for on board charging electronics during day or whom are easily distracted by a pleasant hair dryer on low in the next room sound.

So predominantly or exclusively a lighting option for mine and enjoy the day riding as it was. So that dynamo is not functioning during day. (I use a fast recharge 10,000 ma battery. Full charge in 90 minutes using proprietary charger. Easy to keep topped up. Even a 3w hub dynamo generally only extends electronic battery life and requires 10 hours cycling everyday to do so . )

I say this because I have a feeling that this little German dynamo marvel may I stress may not last as long as a son hub in terms of actual use. Advantage to velogical as my son hub is always wearing out those bearings and giving resistance even when not drawing current.

I hope to be proven wrong as the engineering exudes quality and I don’t want to be negative. But this little bugger spins like a top on ice.

Of course the majority of the time the unit in my case is disengaged so no wear. Add to that a propensity for fair weather riding in daylight and the Velogical Dynamo made logical sense for me.

 

[jond]

What is pedalpal sic?


Have you tested spraying water directly to rim?


I will test it but give me some time. I have to drill my mount and make custom bracket to be able to fit it to rear stay.

Once you position dynamo correctly as per Ogando instruction you will find slippage issue negated. As far as water ingress I am sure it would not be an issue however the position is reasonably protected and allows for a simple deflector to add protection.

 

[snilard]

Dynamo position close to brake pad but clears with 2-3 mm. I guess aero position could be used.

Or you can mount dynamo on other side of frame to put it on other side of stay.

 

[jond]

And what bout disk brakes? There is not any braking surface on dick specific rims.

Yes true but most disc brake wheel sets still have vertical leading edges at rim edge.

Now have you moved that dynamo yet ? And with what result.

 

[snilard]

Now have you moved that dynamo yet ? And with what result.

Not yet. i would like but I don't have time. And it does not slip in my current configuration where it drives only 2 LED light without any smart electronics. I was sliping with my smart electronics what was designed to suck as much power as possible while maintaining reasonable dynamo efficiency.
I don't like that in my current setup it grinds elox from my rim. So there is thin silver line under braking surface on my rim.

 

[jond]

So update on velogical dynamo.

Now fitted to yoleo disc brakes carbon 50 mm wheels. Running on 28 mm tyre surface as a trial. So far so good.

Happy with it and iqx light. Very impressive.

 

[jond]

Not yet. i would like but I don't have time. And it does not slip in my current configuration where it drives only 2 LED light without any smart electronics. I was sliping with my smart electronics what was designed to suck as much power as possible while maintaining reasonable dynamo efficiency.
I don't like that in my current setup it grinds elox from my rim. So there is thin silver line under braking surface on my rim.

Ok you’ve had time to build three hot glue guns. I hope by now you have your dynamo in a spec place alignment.

 

[ed72]

vacuum cleaner or jet engine?

I had considered but the noise would drive me crazy. I can't stand the noise off some normal dynamo hubs. YMMV

 

[jond]

Hi Ed

In reality above 25 klm / hr the hair dryer noise is mute by wind noise in your ears even mounted on the vendetta rear wheel.

I have no experience with the velospeeder which is an electric assist not a dynamo.

Vacuum cleaner jet engine lol. It’s not that loud. But it is a factor as discussed in my review.

It’s more like a person humming if that makes sense as an apt description. Or perhaps a hair dryer on low speed.

And yes like snilard it did initially bother me for first few weeks in the sense that I felt as though I was being slowed down. But I wasn’t in actual fact.

Now I appreciate the little velogicals reassuring whir noise. It’s company out there in the boon docks.

From the videos you can see how little drag there is on the wheel by its run down time. Cheers.

 

[ed72]

Just going by the noise on three videos. My eyes aren't calibrated for drag. It is a remarkable device and one that I thought about during my decision to stay with battery lighting.