DVC45

What's everyone's opinion on this?
https://www.amazon.com/Joule-Dynamo-F...rds=dynamo+hub

Good enough?

For a full wheel, it's the cheapest I see on Amazon.
Would be good for my folding bike.

zacster

6v 2.4 watts, may be good enough. Don't put a taillight on with it though.

noglider 

74mm fork, is that common? Also it is nutted rather than QR.

Lex Fati

Busted knuckles, what SP hub model do you have? The "S" series (SD-8, SV-8) hubs are designed to output 3.0w on 20" wheels (2.4w on 700c wheels), similar to the Schmidt SonDelux.

The "P" series (PD-8, PV-8) on the other hand, is designed to output 3.0w on 700c wheels, like the Son 28.

For an accurate comparison of the two brands, the models of both hubs would need to be known. In any case, I have not noticed any observable difference between the light output of the SP PV-8 and the Son 28 at either walking or riding speeds.

2.4w should be enough to power a headlight and taillight provided low power LEDs are used. Since less electrical drag is produced if less electrical output is produced, some riders use 700c wheels built with dynamo hubs designed for 20" wheels. According to Peter White Cycle's webpage, even German StVZO has changed to allow this.


I do find it interesting that the specs show this wheel is designed to output 2.4w on a 20" wheel, which means it would produce even less at the same speed on a 700c wheel due to lower RPM.

DVC45

Yeah, I wonder if their description is accurate.

busted knuckles

[QUOTE=Lex Fati;16482855]Busted knuckles, what SP hub model do you have? The "S" series (SD-8, SV-8) hubs are designed to output 3.0w on 20" wheels (2.4w on 700c wheels), similar to the Schmidt SonDelux.

The "P" series (PD-8, SD-8) on the other hand, is designed to output 3.0w on 700c wheels, like the Son 28.

For an accurate comparison of the two brands, the models of both hubs would need to be known. In any case, I have not noticed any observable difference between the light output of the SP PV-8 and the Son 28 at either walking or riding speeds.



I have the pd 8 on the big dummy. Both bd and lht have 26 inch wheels. I do have a better light on the lht. There is a definite difference between the two at walking speeds. Tail lites on both bikes.

WestMass

Update!!!

+ 105 rear wheel, front alfine dynohub with reflective rim, cowbell 2 bars, kona p2 fork.
to be installed: bb7 front, shorty ultimate canti rear, new chain rings (46/34), hermans head and tail light (dynamo). Pre-upgrade weight 27.02 (with nokian Hakka w106s) - thinking overall weight will be up a lil bit following this.

zacster

I took my 3N72 dynamo wheeled bike on an extended 35 mile or so ride today. It was bright sunshine, so I didn't have the light on, but you couldn't feel a thing from the dynamo. My light has a the daylight detection so even if it were on, only the daytime running lights would be on, not the main light.

acidfast7

I do think it's hilarious that people expect drag. Not you personally, just the nay-sayers in general!

It powers a 3W light (max) and even with 50% efficiency ... they'd only feel an 6W drag. When I ride only flat surfaces on my SS bike ... I put out somewhere between 100 and 150W, so I'm going to notice a 3 to 5 W difference.

WestMass

I guess for those who haven't had experience wi these types of hub have worries about the changeover - as it is expensive.

its definitely a very odd-ball thing for a US bike. The shop where I special ordered all of my stuff from were asking me why my hub was so big when they received it! I said" I told you guys I ordered a generator hub to power my lighting system!" And the guy had apparently thought I was joking and didn't realize that's was still something that bikes could have! And this is a really solid well-rounded shop. There is not really much of a market for commuter bikes where I live.

zacster

I stopped by the Rapha shop in the Meatpacking district of Manhattan. For those of you that don't know Rapha, myself included, it is a line of very high end cycling wear. And the Meatpacking district is a high-end fashion district. This shop is the "club" shop, with a coffee/beer/wine bar, videos of races on continuously during the day on big screens and actually nice. The woman that greeted me as I walked in with my very old Trek 7000 that I just upgraded, in particular with the dynamo, was agog about the bike. She thought it was the best city bike she's seen. Rack, fenders, and that light mounted like a motorcycle headlight below the bars, she just loved it. Mind you, in the back of the store were a collection of bikes that Greg Lemond used in the TdF. And hanging were a bunch of Cervelos. My old Trek was still the star. I gave the wheel a spin to show off the light.

I'm also getting one of the Magnic Light ICs for the rear to make it even more cool.

After that store I took the bike up the West Side Bikeway, and it was sloppy with the snow melt runoff.

WestMass

Soooo I will update this thread again with some photos but I am officially set up with my new wheel and lights! Shimano alfine and hermans headlight. Looks to be very, almost blindingly bright.

noglider 

zacster, I was also at Rapha recently. It's a scene, for sure. Some rides start out there, the barista told me. I like how the meat market has now become a meet market. Or something. I live a few blocks away.

fietsbob

it is for a few folding bikes , my Shimano-Brompton wheel shipped
with an Allen Bolt skewer that Schmidt got made, for the hubs they made for
their 74mm hubs to fit folders..

Ends are stainless steel,

where the same sort of skewer that ships with the 100mm wide hubs the ends are Aluminum.

post 51, asking about an Amazon warehouse buy, which has nutted axles
I suspect is a hub with a 100mm axle width.

WestMass

Happy

Mr IGH

I just bought a Phillips SafeRide 60 with tail light off the 'bay. Best generator light I've ever used. Work just fine from the wimpy Sturmey 3.0W hub:


Tail Light is real nice too:

acidfast7

Nice!

They get rave reviews over here!

Mr IGH

I had to get mine mailed from Holland, nobody sells them over here. I replaced a SuperNova laser beam. It was great for blinding cagers but scary on a dark bike path. The Phillips' beam shape is awesome, no wasted stray photons.

acidfast7

next time try Germany

Bike24 - Suche

-19% VAT + shipping

it's even in English if you don't read German:

https://www.bike24.de/1.php?content=1...aferide;lang=2

edit: ppl over here complain the plastic bezel in the front lights up, which is an extreme defect in the eyes of Germans and Dutch :-/

robert schlatte

I have two bikes with shimano 3n72 dynamo hubs. Absolutely cannot tell the difference. However, I have found that the hub might need a slight adjustment when new. From the factory the bearings are a little snug. Always adjust the non-drive side. The drive side, plug side has a little internal wire that you do not want to sever.

In terms of weight of the hub, I don't notice it when I'm riding. I typically carry the bikes to my basement for servicing. The little additional weight is no issue.

Mr IGH

That's about what I paid, the guy I bought it from is a private party with a cool website, I decided to support him:
Bicycle lighting, mostly powered via dynamo, and USB power from dynamo

Wouter is really into this subject and it was enjoyable to exchange emails with him.

In any case, the Phillips SafeRide 60 is amazing, I am surprised that nobody sells them in the USA.

PaulRivers

Actually, you can buy them on Amazon (oh...well, if you're talking about the battery version...). The problem with the SafeRide was main it's poor battery life - around an hour with the stock batteries, over an hour but a little short of 2 hours (if I remember right) with the best AA batteries. It has some sort of internal timer or something so it would still turn off at 2 hours (or so) even if you rewired it to use a larger external battery pack.

Apparently last fall Phillips decided to stop selling them in the US - right at the same time that the B&M Ixon IQ Premium was announced, with similar light output (and apparently a well designed shaped beam) but with 4-5 hours of battery life -
Busch&Muller battery powered bicycle lights

Here's a guys full review of the new Ixon IQ vs the old one (the new one has similar output to the saferide, the older one was much dimmer) -
Product Review: B&M Ixon IQ Premium LED Headlight | Captain Overpacker

This is a gif he put together comparing the beam pattern of the old one vs the new one (note that the saferide is not in this, and that as always these pics usually appear brighter than they look in real life) -


Edit: The Ixon IQ is battery powered with AA's (they can be charged in the light though, which is pretty cool). The equivalent dynamo light is the Lumotec Cyo Premium, which has exactly the same output and is believed to use exactly the same led and lens.

acidfast7

That's a very nice post, so I hate to say this, but I will...

using batteries is missing the point and it pains me to see the US so far behind in tech (even with bikes!) because I want to see the US succeed.

:faceplam:

Mr IGH

Hmmmmm, not sure how to respond....

mstraus

There is both a battery and dynamo powered version of the SafeRide. One posted said only the battery version was sold in the US.