Rox Lemans Posted May 25, 2017 Share Posted May 25, 2017 I'll be switching to all LED in my V11s shortly. Especially the headlight. These Guzzi factory headlights are like riding with candles strapped to the front of your bike. Link to comment Share on other sites More sharing options...
docc Posted May 25, 2017 Share Posted May 25, 2017 I'll be switching to all LED in my V11s shortly. Especially the headlight. These Guzzi factory headlights are like riding with candles strapped to the front of your bike. With so many choices for the H4 LED, post what you find. I don't suppose we have this entirely figured out (yet). Link to comment Share on other sites More sharing options...
swooshdave Posted May 25, 2017 Author Share Posted May 25, 2017 I'll be switching to all LED in my V11s shortly. Especially the headlight. These Guzzi factory headlights are like riding with candles strapped to the front of your bike. Are you running a separate headlight relay? Link to comment Share on other sites More sharing options...
JesterGrin_1 Posted May 25, 2017 Share Posted May 25, 2017 http://www.ebay.com/itm/2PCS-BAY15D-1157-White-Car-Tail-Stop-Brake-Light-Super-Bright-33SMD-LED-Bulb-12V-/222314694159?hash=item33c2fd060f:g:yMgAAOSwal5YKdKh&vxp=mtr Link to comment Share on other sites More sharing options...
Kiwi_Roy Posted May 25, 2017 Share Posted May 25, 2017 I'll be switching to all LED in my V11s shortly. Especially the headlight. These Guzzi factory headlights are like riding with candles strapped to the front of your bike. Before switching try adding a relay in the bucket to bypass the tiny wires to the bar switch, makes a huge difference 1 Link to comment Share on other sites More sharing options...
swooshdave Posted May 25, 2017 Author Share Posted May 25, 2017 http://www.ebay.com/itm/2PCS-BAY15D-1157-White-Car-Tail-Stop-Brake-Light-Super-Bright-33SMD-LED-Bulb-12V-/222314694159?hash=item33c2fd060f:g:yMgAAOSwal5YKdKh&vxp=mtr You don't want White for the tail light. With LED you want the light to match the lens. I posted why on Wild Guzzi recently. Link to comment Share on other sites More sharing options...
docc Posted May 25, 2017 Share Posted May 25, 2017 I'd like to read that explanation. Do mind copying that and pasting it here? Or posting a link? Link to comment Share on other sites More sharing options...
swooshdave Posted May 27, 2017 Author Share Posted May 27, 2017 I'd like to read that explanation. Do mind copying that and pasting it here? Or posting a link? https://electronics.stackexchange.com/questions/20757/led-lighting-with-incandescent-spectrum 1 Link to comment Share on other sites More sharing options...
docc Posted May 27, 2017 Share Posted May 27, 2017 After enough coffee, that read helps make sense of the physics of LED lighting and why there will likely be a "driver chip" involved. The tail light LED unit is spectacular. And self contained (no external driver, no fan). I hope we can source something similar for the headlamp, but suspect that the desired color and output will typically require the driver and fan. Link to comment Share on other sites More sharing options...
swooshdave Posted May 27, 2017 Author Share Posted May 27, 2017 After enough coffee, that read helps make sense of the physics of LED lighting and why there will likely be a "driver chip" involved. The tail light LED unit is spectacular. And self contained (no external driver, no fan). I hope I can source something similar for the headlamp, but suspect that the desired color and output will typically require the driver and fan. Energy = heat No getting away from that. But because it's electronics it's just a matter of time before we have super powerful LED bulbs that are compact but I doubt we'll getting away from the cooling needs. What would be nice is variable speed cooling fans. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
footgoose Posted May 27, 2017 Share Posted May 27, 2017 so a white LED "bulb" will not appear red through a red taillight lens? I don't care about the science, just the result. Link to comment Share on other sites More sharing options...
MartyNZ Posted May 27, 2017 Share Posted May 27, 2017 so a white LED "bulb" will not appear red through a red taillight lens? I don't care about the science, just the result. A white LED will appear red inside a red tailight lens, but it will be dim. Here's why. A red lens filters out all visible light except red. Only red can pass through, and the rest is absorbed. So all the light from a red LED passes through the lens with no loss, because it is only red emission. A white LED is most likely a blue LED with a phosphor on the surface which glows (sort of bluish) white. Then only some of this white light can pass through the lens. This assumes that the bluish white light has some red component to its spectrum. There is two losses in this. Blue to white, and white filtered, to leave only red. This means that a white LED will be dim compared to a red LED when viewed outside a red taillight lens. Swooshdave is right, it is best to avoid a white taillight LED. For the same reason, LED indicator lamps inside standard indicator lenses are best if their native colour is amber/orange/yellow, rather than white. 2 Link to comment Share on other sites More sharing options...
footgoose Posted May 27, 2017 Share Posted May 27, 2017 Ok, I can follow that. Thanks for splainin' it Marty. Now I need to find the thread on your led tail light project (last year?) and read up. Link to comment Share on other sites More sharing options...
MartyNZ Posted May 27, 2017 Share Posted May 27, 2017 ...I need to find the thread on your led tail light project (last year?) and read up. Do you mean this?: http://www.v11lemans.com/forums/index.php?showtopic=18532&p=209449 Link to comment Share on other sites More sharing options...
footgoose Posted May 28, 2017 Share Posted May 28, 2017 ...I need to find the thread on your led tail light project (last year?) and read up. Do you mean this?: http://www.v11lemans.com/forums/index.php?showtopic=18532&p=209449 Yup, that's it. thank you I shouda acted quicker on that extra one you offered up Link to comment Share on other sites More sharing options...
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