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  1. #1
    Senior Member Fenway's Avatar
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    Busch & Müller DIWA system questions

    I was thinking of getting the Busch & Müller LUMOTEC oval DIWA plus & D'TOPLIGHT DIWA plus system http://www.bumm.de/docu/nojsmenu-e.htm, to go with the generator wheel http://www.sheldonbrown.com/harris/l...g/shimano.html, (at the bottom of the page) from Harris Cyclery.

    Does anyone have experience with this light setup or opinions on it?

    I plan on ordering the lights themselves from http://en.lecyclo.com/products/secur...stem-diwa.html, as even with the exchange rate and shipping to the US the pricing seems favorable compared to what US retailers I've found to carry the same system. Does anyone know a cheaper US based supplier or have experience ordering from LeCyclo?

    I've searched the forums and haven't been able to find any discussions in detail on DIWA or LeCyclo, so any input would be appreciated.

    -Thank you!

  2. #2
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    check out Peter White's web site

    I don't have the unit you have listed, but have been researching commuter lights and bookmarking some sites for my reference. If you haven't yet, you may want to check out Peter White's web site. I don't know how prices comparae, but he certainly provides plenty of information on the products, mounting options, and what is compatible.

    Also visit this British forum for a comparison that includes some European and a few US lights, and for a cross reference, here's a comparison of lights most common in the US. There is much more there than this chart if you search. I like the chart because of the lumens/$100 spent. Wish there were more of the mid-range options compared since I'm not trail riding. My Light in Motion Solo and Cateye LD1100 have been serving me well on commutes, but I'm trying to set my son up without breaking the bank. It is tempting to upgrade, and pass along the older gear in case he breaks or looses them to a thief, but I would prefer not to sock hundreds into the new purchase at this point. Of course, they may die soon on one of my rides anyway.

    I was considering the Bausch & Muller Dynotech 6 (sidewall generator) combined with an Ixon IQ head light & 4D Toplight Senso Multi Taillight, but it is over $300 by the time I purchase all of the recommended parts. The technology allows the lights to work with or without the charger, and their batteries back up the wires and charger in case they loose a connection. At that price, it is approaching the realm of some much brighter HID lights with lithium cells. I do like the idea of battery back-up combined with on the road recharging. I also like the idea that the German lights are designed for road use so that they won't blind approaching drivers.

    Good luck. Let us know what you purchase and how you like it.

  3. #3
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    I've used the B&M Lumotec oval with standlight - it was just OK, on dark roads it was OK to see by, on better lit streets with cars not so much. I replaced it with a B&M Lumotec IQ Fly with stand light and it was a big improvement, even good on well lit streets with traffic.
    I've used both with a B&M sidewall dynamo and Shimano dynamo hub.

  4. #4
    Senior Member Fenway's Avatar
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    I found that www.bike24.com has both versions of the DIWA system halogen vs. LED headlight with the cheapest overall price including shipping to the US. I think I'm going to go with the LED front and rear light as a fool proof battery free "be seen" light set and supplement the headlight with a MagicShine light "to see". Eventually when everything arrives I'll write up a report and post some pictures.

  5. #5
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    The problem with the Oval is simply that it's outdated and puts out much less light than more modern dynamo lights.

    The problem with the DIWA system is that since it never caught on, no one looks for the light to become brighter or dimmer. How often do you look to see the intensity of car brake lights for braking? If you're like me, the answer is "sometimes, occassionally". With no one else using the system, imo, I don't think it's any more effective than a regular light.

  6. #6
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    Quote Originally Posted by dfarinwi View Post
    I don't have the unit you have listed, but have been researching commuter lights and bookmarking some sites for my reference. If you haven't yet, you may want to check out Peter White's web site. I don't know how prices comparae, but he certainly provides plenty of information on the products, mounting options, and what is compatible.

    Also visit this British forum for a comparison that includes some European and a few US lights, and for a cross reference, here's a comparison of lights most common in the US. There is much more there than this chart if you search. I like the chart because of the lumens/$100 spent. Wish there were more of the mid-range options compared since I'm not trail riding. My Light in Motion Solo and Cateye LD1100 have been serving me well on commutes, but I'm trying to set my son up without breaking the bank. It is tempting to upgrade, and pass along the older gear in case he breaks or looses them to a thief, but I would prefer not to sock hundreds into the new purchase at this point. Of course, they may die soon on one of my rides anyway.

    I was considering the Bausch & Muller Dynotech 6 (sidewall generator) combined with an Ixon IQ head light & 4D Toplight Senso Multi Taillight, but it is over $300 by the time I purchase all of the recommended parts. The technology allows the lights to work with or without the charger, and their batteries back up the wires and charger in case they loose a connection. At that price, it is approaching the realm of some much brighter HID lights with lithium cells. I do like the idea of battery back-up combined with on the road recharging. I also like the idea that the German lights are designed for road use so that they won't blind approaching drivers.

    Good luck. Let us know what you purchase and how you like it.
    Regarding the 4D Toplight Senso Multi Taillight, be aware that I had nearly the same train of thought and ordered one (hooked it up to a Cyo Plus (with standlight)), and once I put it one my bike I found I thought it was a completely piece of crap - so much so I got one of the regular dynamo standlight tail lights to replace it. Here's why:

    1. The battery backup isn't really a "backup", it's actually the only way that the tail light is powered when you're not moving. There's *NO* standlight collector or battery in the light - when your batteries die, the tail light only stays on while you're moving. You might think from the confusing wording that the light has a standlight + battery backup - it doesn't. You might also think the front light standlight might power the rear light for a short time while you're stopped - it does not (at least with my Cyo, which does stay on after I stop for a while). Since the light is behind you, you may not notice that you no longer have any rear light. IMO, it's even more dangerous than a battery tail light which I can at least check to see if it's working while the bike isn't moving, and I expect to need to recharge the batteries on.

    2. Though it supposedly has a sensor, the sensor on mine did not work. One of the benefits to a dynamo tail light, IMO, is that it automatically turns on when you turn the front light on - one less thing to mess with, no need to stop to turn it on, and no need to turn it off at the end of your ride. The light I got did not do that, and needed to be switched on manually every time. Naturally, it also needed to be switched off manually, leaving the possibility open of forgetting to switch it off and draining the batteries.

    I would personally recommend either buying one of the regular dynamo tail lights with standlight (like the flatlight plus) or using a regular battery tail light, rather than getting the worst of both worlds with the 4D Toplight Senso Multi Taillight.

    Being super paranoid about my lighting, I put 2 tail lights on my bike - one dynamo light with standlight and one battery powered tail light (with reflector as well). I figure the odds of them both being out at the same time (or me forgetting to turn one on) are astronomical. This also lets me put one on steady and once on blinking, which IME is the most visible and trackable combination.

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