BMW K bikes (Bricks)

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1Back to top Go down   Momentary miss Empty Momentary miss Thu Aug 13, 2020 11:44 pm

davemadsen

davemadsen
Silver member
Silver member
‘87 RT with 140,000 miles. Works great. So why am I writing? I’m scooting down the highway at 70 mph and each time I initiate a lane change and press either the left or right turn indicator switch the engine misses a beat; like a millisecond. It doesn’t matter if I hold the turn indicator or just ‘stab’ it. Cancelling the said action does not affect the engine. In fact nothing causes the engine to cut out except pressing either turn indicator. I was able to repeat this several times over the course of an hour of highway riding.

Now... when initiating a lane change at 65 mph (or slower), there is no momentary cutting out (and when I say ‘cutting out’, I am talking a very, very brief lapse of spark.

The way I figure it is there is something electrical going on or the bike just doesn’t want me to use the turn indicators at 70 mph.

Any ideas?


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Dave
    

2Back to top Go down   Momentary miss Empty Miss Fri Aug 14, 2020 12:11 am

daveyson

daveyson
Life time member
Life time member
If the problem goes away with the blue/green wire unplugged from pin 1of the flasher relay (or the instrument cluster) that could be a pointer, you would loose the auto cancel during this test, not a biggy.

How do they Work at 120mph?


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11/1985 bmw k100rt (late model)  Vin. 0090567
 ~120,000 km
    

3Back to top Go down   Momentary miss Empty Re: Momentary miss Fri Aug 14, 2020 11:13 am

Two Wheels Better

Two Wheels Better
Moderator
Moderator
My girl went away to Oregon for a long weekend to visit her sister and nieces. I've found plenty to do in the garage while she's away. 

Does this count as a momentary miss?


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1970 R60/5, OZ '77 R75/7-R100, '85 K100'87 K75C, OZ '87 K100RS, '93 K11-K12 Big Block, '93 K1100RS, '95 R100-Mystic, '96 K1100RS, '98 K1200RS, '00 K1200RS, '02 K1200RS, '03 K1200GT, '04 R1150R'04 R1150RT, '05 K1200S, '06 K1200R, '07 K1200R, '09 K1300GT & 2013 R1200RT-Polizei  - Beemers owned still or sold.

1977. It was a very good year. Somewhere.
    

4Back to top Go down   Momentary miss Empty Re: Momentary miss Fri Aug 14, 2020 3:11 pm

Born Again Eccentric

Born Again Eccentric
Life time member
Life time member
@Two Wheels Better wrote:My girl went away to Oregon for a long weekend to visit her sister and nieces. I've found plenty to do in the garage while she's away. 

Does this count as a momentary miss?
Only if you missed her and didn’t Fully exploit the moment of freedom....


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Momentary miss Uk-log10 Momentary miss Sco-lo15Momentary miss Eu-log10
                              Paul  Momentary miss 905546712

"Heidi" K100LT 1991 (Grey) (VIN 0190172 Engine No. 104EB 2590 2213) - 5th owner. January 2014 (34,000 - 61,000 miles and counting....)
"Gretel" K100LT 1989 (Silver Grey) (VIN 0177324 Engine No. 104EA 2789 2211) - 4th+ owner. September 2015 (58,500miles and counting....). Cat C Insurance write-off rebuild Feb 17
"Donor" K100LT 1990 (Red)  (VIN 0178091 Engine No. 4489 2024) - 6th & final owner (crash write-off now donor bike).   June 2012 (73,000 miles) to November 2013 (89,500 miles)
    

5Back to top Go down   Momentary miss Empty Re: Momentary miss Fri Aug 14, 2020 4:24 pm

davemadsen

davemadsen
Silver member
Silver member
@daveyson wrote:If the problem goes away with the blue/green wire unplugged from pin 1of the flasher relay (or the instrument cluster) that could be a pointer, you would loose the auto cancel during this test, not a biggy.

How do they Work at 120mph?
105° F. today...not riding at 70 mph or 120 mph. Troubleshooting will have to wait until cooler temps.


__________________________________________________
Dave
    

6Back to top Go down   Momentary miss Empty Re: Momentary miss Fri Aug 14, 2020 4:40 pm

moriarti

moriarti
Life time member
Life time member
Surely my lifelong association with Miss Fortune counts in this matter Momentary miss 652573 Momentary miss 652573


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1984 k100 rs red/black VIN  0004449
    

7Back to top Go down   Momentary miss Empty Re: Momentary miss Fri Aug 14, 2020 5:04 pm

Two Wheels Better

Two Wheels Better
Moderator
Moderator
Just as long as you don't mind miss-behaving!


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1970 R60/5, OZ '77 R75/7-R100, '85 K100'87 K75C, OZ '87 K100RS, '93 K11-K12 Big Block, '93 K1100RS, '95 R100-Mystic, '96 K1100RS, '98 K1200RS, '00 K1200RS, '02 K1200RS, '03 K1200GT, '04 R1150R'04 R1150RT, '05 K1200S, '06 K1200R, '07 K1200R, '09 K1300GT & 2013 R1200RT-Polizei  - Beemers owned still or sold.

1977. It was a very good year. Somewhere.
    

8Back to top Go down   Momentary miss Empty Re: Momentary miss Fri Aug 14, 2020 6:44 pm

moriarti

moriarti
Life time member
Life time member
Rather that than Miss Happ another close friend Shocked


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1984 k100 rs red/black VIN  0004449
    

9Back to top Go down   Momentary miss Empty Re: Momentary miss Sat Aug 15, 2020 12:10 am

Laitch

Laitch
Life time member
Life time member
@davemadsen wrote:‘87 RT with 140,000 miles. Works great. . . . (and when I say ‘cutting out’, I am talking a very, very brief lapse of spark.
For clarification, how much briefer a lapse than very brief is a very, very brief lapse—twice as brief? What is the duration of your baseline brief lapse.

If the moto works great at 140K miles, it might be best not to overreach. Smile Perhaps you're being affected by your own synapse activity stimulated by the thrilling simultaneous tasks of speeding and turning.


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1995 K75 81,000 miles
Momentary miss Usa-lo10
    

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