Headlight running hot - to the touch ! - Ducati.ms - The Ultimate Ducati Forum
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post #1 of 12 (permalink) Old Apr 14th, 2017, 9:09 am Thread Starter
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Headlight running hot - to the touch !

Hoping I'm not being paranoid but... started the bike ('97 SS/CR) for the first time this season and as it was idling in the garage I was going through the checklist to make sure all the lights were operational. When I put my hand in front of the headlight to check the brights I notices the light was really hot - hot to the touch hot... Old age has me forgetting if this is normal operation or that I might have an issue. So your thoughts would be helpful - something to worry about? If so where do I start? Nothing to worry about - get on and ride....

Thanks as always

Matt
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post #2 of 12 (permalink) Old Apr 14th, 2017, 12:41 pm
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I would change the bulb out.
Maybe go to a Silverstar?
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post #3 of 12 (permalink) Old Apr 14th, 2017, 5:10 pm Thread Starter
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Originally Posted by Rainman View Post
I would change the bulb out.
Maybe go to a Silverstar?
It's actually the original bulb (20 years old!) so replacing it sounds like a solid idea.... will need to dig out the specs for a replacement bulb.

Thanks much

Matt
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post #4 of 12 (permalink) Old Apr 14th, 2017, 5:37 pm
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Hot to the touch is normal me think.

1992 Ducati 900SS with CR side fairings and solo tail.
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post #5 of 12 (permalink) Old Apr 14th, 2017, 6:16 pm
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TLR It'll be hot, that's normal. Compare with your car's headlights, assuming they are also incandescent. Replacement is an off the shelf H4/9003.

Full details:

Different people have different opinions about which brand and model is best, though as already mentioned Sylvania SilverStar are generally nice, as are the Philips/Osram (same manufacturer) X-TREME VISION or Night Breaker or whatever it's called. Lumens on the road are as important as color hue, don't sacrifice lumens for a pretty blue light.

Stick with 60/55 watts with the OEM wiring. Install a relay and heavier gauge wire to take it up to 110/80 from Hella. Rally Lights, Hella, TerraTrip, Hans, WRC, ZAMP has everything you need to do it.

I'd recommend against retrofitting an LED bulb into the OEM housing. The LED's aren't in the same locations/orientations nor do they have the correct shielding to to match up with what the incandescent bulbs do, you'll get weird shadows and hotspots.

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It's Italian. If I can get it to start, it'll win.
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post #6 of 12 (permalink) Old Apr 15th, 2017, 9:14 pm
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Rule # 1 = If it ain't broke, don't fix it.

'96 Ducati SS900CR, '07 S4RS, '06 Busa, '77 Bonny,
'00 Superglide, '85 Sportster, '78 SR500
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post #7 of 12 (permalink) Old Apr 21st, 2017, 4:43 am
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The heat is the nature of the way it produces light.

This applies to halogen (conventional headlights) and incandescent light bulbs (now banned from sale in many countries as about only 10% of energy in becomes useful light out!!!!!!!)

Current (Amps) is passed through a resistance (the filament).
This causes the filament to get hot. Depending on how hot, the filament glows yellow hot, white hot etc.

Just like sticking a steel poker into coals in a fire. When you pull it out after a while it is red hot (light) to the eye and effing hot to the touch.

Richard Collins - 2001 900SSie
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post #8 of 12 (permalink) Old Yesterday, 9:20 am
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The pipes get hot too.

'96 Ducati SS900CR, '07 S4RS, '06 Busa, '77 Bonny,
'00 Superglide, '85 Sportster, '78 SR500
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post #9 of 12 (permalink) Old Yesterday, 12:15 pm Thread Starter
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Originally Posted by duc96cr View Post
The pipes get hot too.
This made my day! Very funny!!

Thanks for all the replies - both helpful and funny....

Matt
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post #10 of 12 (permalink) Old Yesterday, 3:09 pm
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Quote:
Originally Posted by psyopper View Post
I'd recommend against retrofitting an LED bulb into the OEM housing. The LED's aren't in the same locations/orientations nor do they have the correct shielding to to match up with what the incandescent bulbs do, you'll get weird shadows and hotspots.
Not my experience when using a bulb designed to replace the OEM bulb on a motorcycle. Best pattern with zero distortions that I have ever had, plus 2.5 X the brightness and a fraction of the current drain. Beats the shit out of the OEM bulb in the same fixture.

I try to be thorough. I rarely return to a thread. If you have a question for me, PM me.
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