K11 Owners Group

Flying Duck · Posted: Wed Apr 21, 2021 5:13 pm Post subject: Unsolved mystery

Why does the tach faceplate always warp in the upper inner corner before the speedo faceplate does? Rolling Eyes

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93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE

flybd5 · Posted: Wed Apr 21, 2021 6:54 pm Post subject:

They are too close to the heat of the bulbs. And you probably make a lot more right turns than left. Not a NASCAR fan, are ya? Laughing

_________________
To err once is human. To do so repeatedly is incompetence.
1995 K1100LT SE

Flying Duck · Posted: Wed Apr 21, 2021 9:15 pm Post subject:

Scott_Anderson · Posted: Wed Apr 21, 2021 10:04 pm Post subject:

I was going to say 'heat generating bulbs' shouldn't be your issue Duck as I'd imagine all your bikes are converted to LED cluster lights.
_________________
Ride safe.

1995 K1100LT 0302044
1997 R1100RT ZC62149
2017 FLHTK Ultra Limited
Garmin StreetPilot 2820
Garmin Zumo 550
Garmin Zumo XT
"One who does not ask questions is ashamed to learn" Danish proverb
1997 K1100LT 0302488(R.I.P.)

flybd5 · Posted: Wed Apr 21, 2021 10:28 pm Post subject:

Grunter · Posted: Thu Apr 22, 2021 4:39 am Post subject: Warped tacho and speed faceplates

This seems to be generally only to affect the K1100 bikes. Apart from the 3 K1100LT bikes I have owned which all had the problem, but not in the same place on the dials.

I have also owned 3 x K100LT's and 2 K75's and they have never had the same problem. My K75 bikes are 35 years old this year. So why only K1100's?
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1997 K1100LT
1994 R1100RS

Flying Duck

flybd5

Flying Duck

flybd5

Flying Duck · Posted: Thu Apr 22, 2021 7:54 pm Post subject:

LED heat output varies by LED type and wattage. For example I have a lamp with a 14W A19 LED bulb in a lamp at my house. It puts out more light than a 100W filament bulb. (I use it in my workshop to see better than I could with a 100W filament bulb.) Since the switch on the lamp is busted I turn it on and off by twisting the bulb by hand because it gets nowhere near as hot as a filament bulb does. There's no way in hell I would try that with a 100W filament bulb because it would be way too hot to touch with my bare fingers.

Same thing with the small LEDs I use in the instrument cluster .They generate less heat than a filament bulb.

Some LEDs do generate a boatload of heat though. I am aware of that.

The low setting on oven range elements varies between 200 and 250 degrees. Try boiling water at 200 degrees. You'll be waiting for a long, long time.
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE

flybd5 · Posted: Thu Apr 22, 2021 10:16 pm Post subject:

Like I said, you're not going to win this one. Who said anything about ovens? Smile

_________________
To err once is human. To do so repeatedly is incompetence.
1995 K1100LT SE

Flying Duck · Posted: Sun Apr 25, 2021 2:14 am Post subject:

Oven range elements. Like this:
https://www.amazon.com/Whirlpool-KitchenAid-Replacement-540331014-Y04000033/dp/B082CY2VMK/

It is physically impossible for the LEDs I use in my instrument cluster to generate more heat than the factory filament bulbs. Here's why:

Let's start with one of the most basic laws of physics. Conservation of energy: energy cannot be created or destroyed.

Both filament bulbs and LEDs convert electrical energy into two other forms of energy: heat and light.

One of the problems from the day they were invented is that filament bulbs are incredibly inefficient at converting electricity into light. They convert roughly 5-10% of the electricity they consume into light. The rest is dissipated as heat. (This is why regular 100 watt light bulbs are so incredibly hot to the touch.)

The factory filament bulbs in the instrument cluster consume 3 watts. Even if they're really good filament bulbs 90% of that energy is converted to heat. That's 2.7 watts of heat.

The LEDs that I use in the instrument cluster consume a whopping 0.2 watts. Even if they generated absolutely no light and converted all of that energy to heat it would still take more than 13 of them to generate as much heat as the factory filament bulb.
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE

flybd5 · Posted: Sun Apr 25, 2021 11:07 am Post subject:

Let it go already. No one said squat about the LED's generating more heat than filament bulbs. They don't need to do that, they just need to generate enough heat to warp it. I'm unsubscribing from this pointless thread.
_________________
To err once is human. To do so repeatedly is incompetence.
1995 K1100LT SE

Grunter · Posted: Mon Apr 26, 2021 6:45 am Post subject:

When the warp occurred with my K1100 the lights were not switched on - except the multi billion wat bulb in the sky. When it did warp, after a night in the garage it was always flat again.

When I rode long distances at night with the lights on there was never a problem.
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1997 K1100LT
1994 R1100RS