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Ironhead Sportster Motorcycle Talk (1957-1985) For all those that wanna talk about Ironhead Sportster Motorcycles

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  #21  
Old 26th September 2018
Chuckthebeatertruck's Avatar
Chuckthebeatertruck Chuckthebeatertruck is offline
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Originally Posted by spuggy View Post
However, did hit an unexpected snag.

The ally body of the bulb won't go into the RH55 bulb holder. Won't go deep enough to locate the pins, because the ally ring is wider than a "real" glass bulb at that point.

Doesn't look to be fouling by much, could prolly get enough depth to engage the pins with a rough file and 2-3 mins shaping a bevel on that first knurled portion there - but it does definitely foul and won't go in.

Bizarre, that wasn't a problem on anything else I tried this bulb in...

That's likely because the LED was made to 1158 specs. One of the really crappy things about many LEDs is that they are actually 1158 mounts because their intended market are scooters in the countries where they are made (mostly Taiwan, China, and Thailand). Almost all those scooters are 6V . . . so it makes the most sense to do them up as 1158 bases. Then you swap the pin position and the resistor and next thing you know you've got 1157 bases that are just a bit more "thick" than they need to be.

LED bulbs are still very much the wild west of lighting when it comes to standardization -- both physical dimensions as well as lighting output and colour.


As for plate illumination; there are other ways to accomplish this with LEDs. Currently, there are at least four different makers of bright white plate mounting LEDs. I used these ones on a recent project:
https://www.ebay.com/itm/4Pack-White...QAAOSwF1tZbXAL

It lets you "experiment" with different configurations and even to separate your license illumination from the tail/stop circuit. This is more important for guys working on non-stock bikes with remote location plates.
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  #22  
Old 26th September 2018
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Yochstein Yochstein is offline
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Originally Posted by Chuckthebeatertruck View Post
How often is this happening to you?

Bulbs don't fail regularly from vibration.

If you find you're replacing them more than every few seasons; you need to look more deeply as to why.

Voltage spikes, bad grounds, or poor mounting will cause issues -- but bulb filaments in these series are amazingly vibration resistant.

In other words, an LED won't necessarily "solve" your issue.
I noticed that my entire brake light assembly (bracket that bolts to the fender) is a tad loose. I was thinking that vibration had something to do with it. I have a brand new voltage regulator and new circuit breakers. I'm wondering if one of those are the culprit?
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  #23  
Old 26th September 2018
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Chuckthebeatertruck Chuckthebeatertruck is offline
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Originally Posted by Yochstein View Post
I noticed that my entire brake light assembly (bracket that bolts to the fender) is a tad loose. I was thinking that vibration had something to do with it. I have a brand new voltage regulator and new circuit breakers. I'm wondering if one of those are the culprit?
That's called an "intermitent ground (earth) fault." Your bulb didn't die because of vibration, it died due to a poor ground.


Fix it and carry on.
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  #24  
Old 27th September 2018
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Do you recall which particular model bulb serves the dual function as both a red tail bulb and the white bulb to light up the license plate?...
This is the one...

1157 LED Bulb - Dual Function 25 LED Motorcycle Bulb
https://www.superbrightleds.com/more...-bulb/170/767/

Overview
LED replacement bulbs can fit motorcycle tail lights and brake lights while doubling as a license plate light. This 1157 dual-contact, dual-function bulb has 25 LEDs (3-mm and 5-mm). 19 Red LEDs aim forward from tail lights and brighten when brakes are engaged, and 6 radially mounted cool white LEDs illuminate your license plate. BAY15D 15-mm bayonet base for easy plug-and-play installation—just twist to lock in place. The energy-efficient bulb operates within a wide 9-14.8V DC range and is designed to last 50,000 hours on your motorcycle—42 times longer than incandescent bulbs

In Stock
$12.99 ea. (per Bulb)
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  #25  
Old 27th September 2018
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Originally Posted by Chuckthebeatertruck View Post
That's called an "intermitent ground (earth) fault." Your bulb didn't die because of vibration, it died due to a poor ground.


Fix it and carry on.
Will do, thanks!
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  #26  
Old 27th September 2018
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Originally Posted by IronMick View Post
This is the one...

1157 LED Bulb - Dual Function 25 LED Motorcycle Bulb
https://www.superbrightleds.com/more...-bulb/170/767/

Overview
LED replacement bulbs can fit motorcycle tail lights and brake lights while doubling as a license plate light. This 1157 dual-contact, dual-function bulb has 25 LEDs (3-mm and 5-mm). 19 Red LEDs aim forward from tail lights and brighten when brakes are engaged, and 6 radially mounted cool white LEDs illuminate your license plate. BAY15D 15-mm bayonet base for easy plug-and-play installation—just twist to lock in place. The energy-efficient bulb operates within a wide 9-14.8V DC range and is designed to last 50,000 hours on your motorcycle—42 times longer than incandescent bulbs

In Stock
$12.99 ea. (per Bulb)
Thanks Mick. That's worth taking a shot. I need to fix my assembly and tighten everything up before putting another new bulb in there.
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  #27  
Old 29th September 2018
forqueue forqueue is offline
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A conventional 2357 is the same fit-footprint as an 1157.
Same parking light but the brake element is much brighter (40 vs 32 lumens).
Down-side is 2357 is rated for 1/3 operating life as a 1157
Tried many various LED bulb offerings over the years and none were bright enough.
Then heard about Osram-Sylvania ZEVO 2357R. Pricey @ $20 for 2- but....WOW.
Lifetime warranty. See youtube for comparisons.
They offer a lower priced 1- year version too, SYLVANIA 2357 RSL.
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Old 30th September 2018
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... Tried many various LED bulb offerings over the years and none were bright enough...
Same here, until I found the LED bulbs from www.SuperBrightLEDs.com
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  #29  
Old 30th September 2018
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Same here, until I found the LED bulbs from www.SuperBrightLEDs.com
They have a great selection!
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