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Search: Posts Made By: polyphrast
Showing results 1 to 50 of 83
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06-20-20, 01:40 AM
Replies: 124
Views: 8,833
Posted By polyphrast

First, those 6V/3W are specified with a constant...

First, those 6V/3W are specified with a constant 12 Ohm load at 15 km/h (~9 mph), second your forumloader is a lot of things, but not a constant load. To my knowledge there are no measurements...
06-16-20, 11:24 AM
Replies: 914
Views: 294,742
Posted By polyphrast

i personally find the beam shape of the Eyc a tad...

i personally find the beam shape of the Eyc a tad narrow, but i have only seen the beam shots from the B&M webpage (https://www.bumm.de/en/products/dynamo-scheinwerfer/produkt/160rtsndi.html?).
i...
06-14-20, 01:18 PM
Replies: 8
Views: 508
Posted By polyphrast

You can find Panasonic dynahubs on peter white's...

You can find Panasonic dynahubs on peter white's website: https://www.peterwhitecycles.com/panahub.php. He even states the same as i stated above, that panasonic bought sanyo and he has some products...
06-14-20, 10:30 AM
Replies: 8
Views: 508
Posted By polyphrast

i quote from this article (from 2012) in...

i quote from this article (from 2012) in Fahrradzukunft: (https://fahrradzukunft.de/14/neue-nabendynamos-im-test/)

As Panasonic took over Sanyo, besides now offering eneeloop NiMH batteries,...
06-14-20, 02:00 AM
Replies: 914
Views: 294,742
Posted By polyphrast

Low cost meaning <50 USD as specified in the...

Low cost meaning <50 USD as specified in the thread title or a would you be willing to spend a bit more (if so, please say how much more)? to help you a bit more specifically: for which purpose do...
06-14-20, 01:54 AM
Replies: 32
Views: 1,187
Posted By polyphrast

Lupine uses scotchlok for connection of their...

Lupine uses scotchlok for connection of their e-bike taillight, so it can't be totally unreliable. You might take a look at the coax plugs offered from schmidt/son...
05-16-20, 01:41 AM
Replies: 5
Views: 339
Posted By polyphrast

He doesn't bash, he just points out the weakness...

He doesn't bash, he just points out the weakness of too many products.... in his videos he even praises a competitors lights (a seca). Especially when it comes to road use, most (non-StVZO) bike...
05-16-20, 12:54 AM
Replies: 5
Views: 339
Posted By polyphrast

We have a few threads dealing with the outbound...

We have a few threads dealing with the outbound (use the search function), and i own it (which qualifies probably for first hand experience). There are two major points of criticism, which i will...
05-13-20, 12:50 AM
Replies: 31
Views: 2,127
Posted By polyphrast

I have the Ixon IQ Premium (the battery powered...

I have the Ixon IQ Premium (the battery powered one), and i used it for a long time (it is now unused in a shelf due to the fact that i have more expensive much better lightning toys now, but i am...
05-06-20, 02:30 PM
Replies: 31
Views: 2,127
Posted By polyphrast

I forgot the Lumintop B01, pretty reasonable...

I forgot the Lumintop B01, pretty reasonable price (~35 USD) at aliexpress/banggood, runs with 18650 or 21700 cells. 450 lm max constant output, light distribution is ok (not perfect when used in...
05-04-20, 01:19 PM
Replies: 31
Views: 2,127
Posted By polyphrast

If weight is a concern: Velogical rim dynamos...

If weight is a concern: Velogical rim dynamos (works in wet and slippery conditions as well), 75 grams. Still wiring required, but very short wiring. Also the new SP dynamos (9 series) have in the...
04-20-20, 12:10 AM
Replies: 124
Views: 8,833
Posted By polyphrast

That fatbike version of the SON has the same...

That fatbike version of the SON has the same electrical design and interieur as the standard SON28 (both versions have the same StVZO certification: ~K834), it's just heavier due to a wider body And...
04-18-20, 01:19 PM
Replies: 124
Views: 8,833
Posted By polyphrast

Let's assume SON came out with a 1.5W hub. With...

Let's assume SON came out with a 1.5W hub. With an efficiency of 60% one would need 2.5W. Thats roughly 4W less than the standard SON requires. Any bad lubricated or dirty chain or loose clothing...
04-15-20, 12:51 AM
Replies: 124
Views: 8,833
Posted By polyphrast

Well i wasn't looking into standard hubs >200 $ ...

Well i wasn't looking into standard hubs >200 $ when doing that weight comparison ;). I agree, that mentioned solar panel/battery combo has advantages and if it does the job good enough on rainy and...
04-14-20, 12:17 AM
Replies: 124
Views: 8,833
Posted By polyphrast

Well on this weight discussion a crucial point is...

Well on this weight discussion a crucial point is overlooked: any normal bike has a front hub. And those range between 170 and 250 grams (100 mm axle for quick release), depending on the amount of...
04-13-20, 01:19 AM
Replies: 124
Views: 8,833
Posted By polyphrast

Instead of buying a "spinup" one could by the...

Instead of buying a "spinup" one could by the older "sunup" from the same company and save some money (maybe it has a little less power, efficiency is only at ~45%). The only advantage of the...
04-04-20, 02:13 PM
Replies: 14
Views: 941
Posted By polyphrast

If one only needs that mount for GoPro...

If one only needs that mount for GoPro Interfaces, the Lezyne offers with their "direct x-lock (https://ride.lezyne.com/collections/gps-devices-accessories/products/1-gps-fsmcm-v104)" a considerably...
04-03-20, 03:25 PM
Replies: 14
Views: 941
Posted By polyphrast

As mentioned above there are tons of mounting...

As mentioned above there are tons of mounting options. When you use a gopro adapter, just go on amazon, aliexpress or banggood and you'll drown in options.
For dyno lamps: there are central mounting...
03-23-20, 01:03 PM
Replies: 12
Views: 774
Posted By polyphrast

That is the best way to control the beam shape...

That is the best way to control the beam shape with LEDs. Outbound and Supernova use the same approach, Lezyne does it as well for their StVZO lights, and Lupine as well for their new light. The...
03-23-20, 10:11 AM
Replies: 12
Views: 774
Posted By polyphrast

The numbers i have read repeatedly are...

The numbers i have read repeatedly are 10.000-15.000 euro alone for the development of the optical system. It is also time consuming. Usually a software called lucidshape is used. From what i have...
03-23-20, 02:50 AM
Replies: 12
Views: 774
Posted By polyphrast

bpcyclist excellent and thorough review, sir! The...

bpcyclist excellent and thorough review, sir! The light however has "only" 1500 lumens emitted from the LED chip, so probably 1200-1400 lumens out the front on the road (after ineviteble losses due...
03-14-20, 11:03 AM
Replies: 10
Views: 657
Posted By polyphrast

I remember now that i have read about the...

I remember now that i have read about the crosstalk as well. Unfortunately it seems to be a mission impossible to design and produce a perfect bike light, which doesn't cost a fortune. But then even...
03-14-20, 10:29 AM
Replies: 10
Views: 657
Posted By polyphrast

He did? Never knew this. Since he isn't producing...

He did? Never knew this. Since he isn't producing the lights, i don't see this as a big issue, but he could have and should have revealed this. Nonetheless, i think as well that the reflector is well...
03-13-20, 12:03 PM
Replies: 10
Views: 657
Posted By polyphrast

The light is a good choice. Spanninga bought the...

The light is a good choice. Spanninga bought the bicycle lighting division from Philips. The spanninga 60 uses the philips saferide reflector, which is a pretty good one!. see i.e. on this webpage...
02-28-20, 01:48 AM
Replies: 124
Views: 8,833
Posted By polyphrast

Reason for this are german regulations which...

Reason for this are german regulations which require nominal output at around 15 km/h (Since Germany is/was one of the biggest markets for dyno hubs, as dynamo based lightning was legally required...
02-27-20, 01:38 PM
Replies: 124
Views: 8,833
Posted By polyphrast

maybe the official english manual/assembly...

maybe the official english manual/assembly instruction...
02-24-20, 04:43 PM
Replies: 9
Views: 701
Posted By polyphrast

5 years ago the hotness was li-air batteries and...

5 years ago the hotness was li-air batteries and that concept proofed to be pretty complicated and by far not yet ready for market. so let's talk in five years, whether those special solid...
02-24-20, 12:18 PM
Replies: 9
Views: 701
Posted By polyphrast

Being a trained (electro)chemist (albeit more on...

Being a trained (electro)chemist (albeit more on the fuel cell side), i watched one of the YT vids and quickly scanned a publication on that matter. Probably graphene will appear soon in some cells,...
02-19-20, 02:52 PM
Replies: 37
Views: 2,901
Posted By polyphrast

Post Then you live in a different world than i do. Any...

Then you live in a different world than i do. Any conical beam pattern lamp will blind motorists. Of course a motorist will not blind you, because cars and (motor)bikes are forced by law to have...
02-19-20, 12:49 PM
Replies: 37
Views: 2,901
Posted By polyphrast

It is myth (which unfortunately too many cyclists...

It is myth (which unfortunately too many cyclists believe), that lights with a conical beam pattern (i.e. lights without a cut-off) do not blind motorists (or other cyclists or pedestrians). I guess...
02-17-20, 02:11 PM
Replies: 124
Views: 8,833
Posted By polyphrast

Looks interesting. But not cheap either. but the...

Looks interesting. But not cheap either. but the price is probably justified.


That is pretty good and the pricing is good. i wonder why fahrradzukunft never tested this one, as it is from...
02-17-20, 11:38 AM
Replies: 124
Views: 8,833
Posted By polyphrast

Be assured, in that rabbit hole (i've disappeared...

Be assured, in that rabbit hole (i've disappeared down there also more than once) you'll find that the forumlader is still one of the best energy harvesting systems available, there is only one that...
02-12-20, 03:45 PM
Replies: 124
Views: 8,833
Posted By polyphrast

I thought as well that the beamshape of the luxos...

I thought as well that the beamshape of the luxos would be better, only advantage of the Axa is imo that you can choose "usb charging" only. Depends what is more important, good light or full...
02-12-20, 02:24 PM
Replies: 124
Views: 8,833
Posted By polyphrast

From what i've read in forums and reviews, the...

From what i've read in forums and reviews, the velogicals are pretty reliable (unless very icy...). conventional sidewall dynos just destroy the tire, if you press them to hard to the tire. The...
02-12-20, 02:14 PM
Replies: 14
Views: 903
Posted By polyphrast

I have two lights as well, both going in higher...

I have two lights as well, both going in higher mode: a B&M taillight, controlled by the change of the A/C frequency provided by the hub dyno and the Lupine Rotlicht.

I agree with Vegastriker that...
02-10-20, 10:43 PM
Replies: 124
Views: 8,833
Posted By polyphrast

Here is a nice overview...

Here is a nice overview (https://www.cyclingabout.com/list-of-hub-dynamo-power-supplies-for-usb-devices/) about dynamo power harvester (like the E-Werk). In case you need more power, take a look at...
02-10-20, 08:23 AM
Replies: 23
Views: 1,138
Posted By polyphrast

That function of switching the extra LEDs is most...

That function of switching the extra LEDs is most probably controlled by the AC Voltage of the hub, as the current is more or less constant in hub dynos.

That SP CP/EP4 light has 510 lm (probably...
02-10-20, 07:38 AM
Replies: 23
Views: 1,138
Posted By polyphrast

i agree, that dynohub version is nothing special....

i agree, that dynohub version is nothing special. I find that concept of the e-bike and battery powered versions interesting, because they offer switchable "wide beam" function in combination with...
02-10-20, 04:17 AM
Replies: 23
Views: 1,138
Posted By polyphrast

The author is still active, he just doesn't like...

The author is still active, he just doesn't like most modern bicycle lights due to the beam color. His favorite in light color (and also in the homogenetiy of the beam) is still the 8 years old...
02-07-20, 12:04 PM
Replies: 23
Views: 1,138
Posted By polyphrast

In case you don't want to buy a new wheel, take a...

In case you don't want to buy a new wheel, take a look at the velogical rim dynamos...
02-07-20, 12:11 AM
Replies: 37
Views: 2,901
Posted By polyphrast

Blinking lights make it harder for other...

Blinking lights make it harder for other bikers/motorists to judge the distance between them and you. So unless you have neon yellow reflective clothing, i would strongly suggest you either use a...
02-07-20, 12:00 AM
Replies: 23
Views: 1,138
Posted By polyphrast

That chimney is not lit up by the lezyne, it's...

That chimney is not lit up by the lezyne, it's just the background light and the camera settings (longer exposure time or higher light sensitivy/iso value). The camera settings are not identical, as...
02-06-20, 11:34 PM
Replies: 23
Views: 1,138
Posted By polyphrast

If you are tired of charging batteries, maybe...

If you are tired of charging batteries, maybe take a look at the pedalcell (http://pedalcell.com) system, if you like your current lights. unfortunately those lezynes can't be charged while using....
01-28-20, 03:41 PM
Replies: 21
Views: 1,869
Posted By polyphrast

Some german bike shops ship those B&M lamps to...

Some german bike shops ship those B&M lamps to the US (~20 EUR Shipping), some don't. E.g., Bike24.com does it, and since VAT doesn't apply to US citizens (but US customs/duty/import taxes do...),...
01-27-20, 11:39 AM
Replies: 21
Views: 1,869
Posted By polyphrast

Thanks for clarification. The term cut-off...

Thanks for clarification. The term cut-off applies imo only to lights with similar patterns as car headlights (or StVZO certified bike lights). Some come close to those regulations, even if not...
01-27-20, 10:30 AM
Replies: 21
Views: 1,869
Posted By polyphrast

When i watch this video...

When i watch this video youtube.com/watch?v=zddgpNQebWw , i severly doubt that this light comes even close to having a cut-off. There is way to much light at the reflective street signs (just watch...
01-20-20, 12:53 PM
Replies: 21
Views: 1,313
Posted By polyphrast

Supernova gives both values for their high-end...

Supernova gives both values for their high-end lights, see e.g. here (https://supernova-lights.com/en/products/e-bike-lights-25kmh/m99-mini-pro-25/). However unless you see the beam pattern against a...
01-20-20, 12:44 PM
Replies: 22
Views: 1,189
Posted By polyphrast

I can't say this for all of the dyno lights, but...

I can't say this for all of the dyno lights, but why else would B&M (and others like spanninga, schmidt, hermanns) offer specific dc versions?
For the B&M IQ-X it is for sure confirmed, someone even...
01-17-20, 11:10 AM
Replies: 22
Views: 1,189
Posted By polyphrast

However, those dynamo lights tend to refuse to...

However, those dynamo lights tend to refuse to work with a DC power source. In this case one would need to buy a light specififed as e-bike DC version. Again the Busch und Müller e-bike lights are...
01-14-20, 02:31 PM
Replies: 21
Views: 1,313
Posted By polyphrast

I posted here...

I posted here (https://www.bikeforums.net/21263579-post73.html) a nice overview covering all available high-end glare free lights. In addition to these lights with very clear cut-off features you...
Showing results 1 to 50 of 83
 


 
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