http://citycyclingedinburgh.info/bbpress/ CityCyclingEdinburgh Forum » Topic: Diagnose my Dynamo Light Issues... en Wed, 13 May 2026 05:34:09 +0000 http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=3#post-157000 Mon, 16 Jun 2014 23:07:27 +0000 wingpig 157000@http://citycyclingedinburgh.info/bbpress/ <p>@insto All sorted now, ta. Gunge and dust in the plugs and terminal blocks. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-156919 Sat, 14 Jun 2014 22:30:18 +0000 Instography 156919@http://citycyclingedinburgh.info/bbpress/ <p>@wingpig<br /> I've got a spare multimeter that an electrician left behind. I'll give it to TFP on Monday (or when I find it, whichever comes first). </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-156798 Fri, 13 Jun 2014 09:03:18 +0000 bruce_mcadam 156798@http://citycyclingedinburgh.info/bbpress/ <p>Easy to diagnose my last dynamo problem: the bracket snapped and the dynamo fell off.</p> <p>It was the <a href="http://www.dutchbikebits.com/index.php?route=product/product&amp;product_id=123">bracket for attaching a bottle-dynamo to the front brake boss</a>. And the second time one has failed in the same way: the thinnest part of the rim of the boss screw hole fatigued and snapped. It might be that a small wheeled bike with hard tyres being ridden over cobbles has too much vibration -- shame because it's a neat design otherwise.</p> <p>I'll have to go the the Bike Station and have a rummage for a clamp bracket. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-156770 Thu, 12 Jun 2014 18:00:36 +0000 wee folding bike 156770@http://citycyclingedinburgh.info/bbpress/ <p>Further to my message of 3 months ago… the Brompton light did indeed break and has been replaced with a B&amp;M. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-156721 Thu, 12 Jun 2014 11:05:38 +0000 wingpig 156721@http://citycyclingedinburgh.info/bbpress/ <p>My 30-month-old Philips Saferide appears to have stopped working at some point since the weekend, though I only noticed yesterday evening when I needed to pop out after dusk. Not had time to root out the cause yet. The wiring was all replaced with the frame in February. I've fished out the boxed replacement Lumotec for performing diagnostics with seeing as my multimeter disappeared several years ago. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-142480 Wed, 12 Feb 2014 18:20:50 +0000 wee folding bike 142480@http://citycyclingedinburgh.info/bbpress/ <p>Brompton generator tail lights suffered from the same capacitor mounting issue. The stand light stops working. </p> <p>I've had one since July which is still working fine. It's done a couple of thousand miles. There was no bespoke option to spec a B&amp;M tail light. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-142460 Wed, 12 Feb 2014 16:00:26 +0000 steveo 142460@http://citycyclingedinburgh.info/bbpress/ <p>Thats mighty good of them. Going to fix the other one? Should be easy, a bit of solder and a bit of epoxy and it'll be better than new. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-142455 Wed, 12 Feb 2014 15:36:15 +0000 wingpig 142455@http://citycyclingedinburgh.info/bbpress/ <p>My B&amp;M Lumotec Lyt Plus on the sparebike developed a weirdness a week ago, where the light would seemingly cut out every now and then when I went over a big bump. This shortly evolved into a rattle, an absence of standlight, with the occasional occlusion of the main beam when whatever was rattling bounced up into the path of the emitter. Upon creaking it open a small metal tab and a disconnected supercapacitor were able to be removed from the casing, with the light seemingly suffering from the same disease as afflicted Mr Wilmington's. It's done less than a thousand miles but was bought fourteen months ago, though despite only buying a wheel every year or so from Rose they've said they'll send me a new one for free, which is nice. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-137428 Wed, 18 Dec 2013 11:15:27 +0000 Wilmington's Cow 137428@http://citycyclingedinburgh.info/bbpress/ <p>Give him a big enough Chainring I'll bet he could make 88<strong>k</strong>ph...</p> <p>*pondering getting an old frame and a massive chainring and a flat open place and seeing how fast I can get on the flat* </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-137426 Wed, 18 Dec 2013 11:12:49 +0000 steveo 137426@http://citycyclingedinburgh.info/bbpress/ <p>You'll need ArobCompton to run the dynamo. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-137418 Wed, 18 Dec 2013 11:00:50 +0000 Wilmington's Cow 137418@http://citycyclingedinburgh.info/bbpress/ <p>Good grief, just checked the power stats on the B+M site for the flux capacitor. 1.21 Jigawatts!!!!! </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-137416 Wed, 18 Dec 2013 10:56:04 +0000 steveo 137416@http://citycyclingedinburgh.info/bbpress/ <p><em>With a sonic screwdriver? </em></p> <p>Nah you need a Flux Decoupler. Park have one FDc-2.3 </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-137414 Wed, 18 Dec 2013 10:55:46 +0000 Darkerside 137414@http://citycyclingedinburgh.info/bbpress/ <p>They be a glowing red button around somewhere, possibly under some kind of lifty perspex shield.</p> <p>Say something dramatic and give it a good thump. Always works. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-137412 Wed, 18 Dec 2013 10:48:12 +0000 chdot 137412@http://citycyclingedinburgh.info/bbpress/ <p>"Isolating the reverse power flux coupling?"</p> <p>With a sonic screwdriver? </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-137409 Wed, 18 Dec 2013 10:30:14 +0000 Wilmington's Cow 137409@http://citycyclingedinburgh.info/bbpress/ <p>There's a guy sells t-shirts of 'Slightly wrong movie quotes' and the idea stuck in my head ;) </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-137408 Wed, 18 Dec 2013 10:28:58 +0000 wingpig 137408@http://citycyclingedinburgh.info/bbpress/ <p><em>STR</em>eams.<br /> Have you tried switching to auxiliary power? Isolating the reverse power flux coupling? </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-137405 Wed, 18 Dec 2013 10:24:53 +0000 Wilmington's Cow 137405@http://citycyclingedinburgh.info/bbpress/ <p>DON'T CROSS THE BEAMS! </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-137395 Wed, 18 Dec 2013 10:03:23 +0000 amir 137395@http://citycyclingedinburgh.info/bbpress/ <p>"Kaputnik, Have you tried reversing the polarity? This always works on telly. "</p> <p>But don't do it twice. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-137388 Wed, 18 Dec 2013 08:26:14 +0000 steveo 137388@http://citycyclingedinburgh.info/bbpress/ <p>Kaputnik, Have you tried reversing the polarity? This always works on telly. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-137387 Wed, 18 Dec 2013 07:52:11 +0000 wingpig 137387@http://citycyclingedinburgh.info/bbpress/ <p>I have lots of wire and some spade connectors if you want to copy my bike's attractive orange-wires-crisscrossing-the-frame look. If LB doesn't then BikeTrax probably have official wires seeing as they sell dynolights. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-137380 Wed, 18 Dec 2013 01:09:39 +0000 Wilmington's Cow 137380@http://citycyclingedinburgh.info/bbpress/ <p>As it 'appens I think I've solved it. Front light was perfect once more. Turns out one of the wires to the tail has split. I can only assume the flickering was as it frayed, maybe shorting the circuit? Anyway, need to get a new rear wire now... </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-137346 Tue, 17 Dec 2013 19:51:11 +0000 kaputnik 137346@http://citycyclingedinburgh.info/bbpress/ <p>Swapped the cables over and NOTHING worked. I'll settle for always on... </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-137342 Tue, 17 Dec 2013 18:52:05 +0000 wee folding bike 137342@http://citycyclingedinburgh.info/bbpress/ <p><em>Interesting. The wires running from the front to the rear fell out a few times form the back of the front light. So is it possible I've put them the wrong way round and they'd still put the light on at the back but create the flickering in the front?<br /> </em></p> <p>Ahhhh… I've done that. Something to do with the back light shorting out via the frame and the generator being an alternator meant that the back light didn't work and the front one flashed. Have you tried swapping the back light connectors or just taking it out of the loop? </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-137327 Tue, 17 Dec 2013 16:32:57 +0000 minus six 137327@http://citycyclingedinburgh.info/bbpress/ <p>splendid, i've ordered them for two quid, ta </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-137325 Tue, 17 Dec 2013 16:18:17 +0000 DaveC 137325@http://citycyclingedinburgh.info/bbpress/ <p>@o_0 I had something similar to <a href="http://www.amazon.com/Pieces-Yellow-Button-Filled-Connector/dp/B004UYTWJW">these</a>. I was working as a line man in the TA years and years ago and was talking to a BT lineman who was out on the same road as us. He gave me a box of 'jellies' which you pop two stripped wires in and then snap shut. The silicon gel keeps the water out. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-137311 Tue, 17 Dec 2013 14:56:35 +0000 Dave 137311@http://citycyclingedinburgh.info/bbpress/ <p>@WC, I'd be surprised if the back light is impacting the front but it's easily tested... unplug it!</p> <p>It might be shorting out intermittently - that would account for the flickering as it loses power then picks it up again. Let's plug it into a different bike on Friday? </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-137302 Tue, 17 Dec 2013 14:32:36 +0000 minus six 137302@http://citycyclingedinburgh.info/bbpress/ <p>ah yes, that sounds perfect... cheers, done. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-137296 Tue, 17 Dec 2013 14:03:11 +0000 kaputnik 137296@http://citycyclingedinburgh.info/bbpress/ <p>The Seculite came with some heat-shrink sleeves to cover the connectors, or you can get them in Maplin. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-137288 Tue, 17 Dec 2013 13:22:12 +0000 minus six 137288@http://citycyclingedinburgh.info/bbpress/ <p>@DaveC</p> <p>cheers, i have plenty spade connectors, but its a connector on the Luxos itself that has snapped, two thirds of it is missing, making it difficult to secure a spade connector onto.</p> <p>whats the permanent crimp type you refer to? </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=11870&page=2#post-137283 Tue, 17 Dec 2013 13:14:33 +0000 Wilmington's Cow 137283@http://citycyclingedinburgh.info/bbpress/ <p>Interesting. The wires running from the front to the rear fell out a few times form the back of the front light. So is it possible I've put them the wrong way round and they'd still put the light on at the back but create the flickering in the front?</p> <p>Electronics was always the bit of physics I was rubbish at. Give me loads of theoretical maths type stuff any time! </p>