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51Back to top Go down   Starter or Sprag clutch failure  - Page 2 Empty Re: Starter or Sprag clutch failure Thu Apr 15, 2021 10:46 pm

Laitch


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That's why I recommended riding Route 100. Cool

    

52Back to top Go down   Starter or Sprag clutch failure  - Page 2 Empty Re: Starter or Sprag clutch failure Fri Apr 16, 2021 9:10 am

Point-Seven-five

Point-Seven-five
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It was an excellent tip!


__________________________________________________
Present:
1994 K75RT
1991 K100RS
1988 K100RS SE

Past:
1994 BMW K75S
1992 BMW K100RS
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

53Back to top Go down   Starter or Sprag clutch failure  - Page 2 Empty Re: Starter or Sprag clutch failure Sat Apr 17, 2021 4:58 am

Danish biker

Danish biker
Gold member
Gold member
Thanks for all your replies.

As fare as I know the part that came out the right side of the engine (and also blew a hole up the top), is a part of the “thing”, that holds the “piston” (might be called something else) that runs up and down in the cylinder.

I’ll be riding until the sprang clutch makes trouble again. Then I’ll do the following:

1. Do the WD40 job, this time using no flammable carb cleaner.

2. Let out 1 liter of oil and put in 1 liter kerosene or a engine cleaner solvent.

3. Run (not ride) the bike for 15 minutes.

4. Drain all oil and remove oil filter.

5. The consider the advice about truck diesel oil and maybe do this job.

6. Try to find yet another oil (look at recommendations in this post).

7. Wait for the sprang clutch to fail again Rolling Eyes


__________________________________________________
You have enemies? Good. That means you've stood up for something, sometime in your life.
-Sir Winston Churchill
    

54Back to top Go down   Starter or Sprag clutch failure  - Page 2 Empty Sprag Sat Apr 17, 2021 5:45 am

daveyson

daveyson
Life time member
Life time member
I googled plejlstang and got con rod, which matches your description. By the way, which number cylinder did it pop out of?

Your plan sounds good.

Good luck.


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

55Back to top Go down   Starter or Sprag clutch failure  - Page 2 Empty Re: Starter or Sprag clutch failure Sat Apr 17, 2021 6:07 am

Danish biker

Danish biker
Gold member
Gold member
@daveyson wrote:I googled plejlstang and got con rod, which matches your description. By the way, which number cylinder did it pop out of?

Your plan sounds good.

Good luck.

Not sure haven’t taken the engine apart yet but looks like it came from the front part. It was shot out in the low end of the cover, between the front and second (from front) cover bolts.


__________________________________________________
You have enemies? Good. That means you've stood up for something, sometime in your life.
-Sir Winston Churchill
    

56Back to top Go down   Starter or Sprag clutch failure  - Page 2 Empty Re: Starter or Sprag clutch failure Sun Apr 18, 2021 4:32 am

Danish biker

Danish biker
Gold member
Gold member
Apparently I can post pictures if I don’t chose the web version so here we go

Starter or Sprag clutch failure  - Page 2 68abce10



Last edited by Danish biker on Sun Apr 18, 2021 4:35 am; edited 1 time in total

    

57Back to top Go down   Starter or Sprag clutch failure  - Page 2 Empty Re: Starter or Sprag clutch failure Sun Apr 18, 2021 4:33 am

Danish biker

Danish biker
Gold member
Gold member
Starter or Sprag clutch failure  - Page 2 F1110410


__________________________________________________
You have enemies? Good. That means you've stood up for something, sometime in your life.
-Sir Winston Churchill
    

58Back to top Go down   Starter or Sprag clutch failure  - Page 2 Empty Re: Starter or Sprag clutch failure Sun Apr 18, 2021 4:37 am

Danish biker

Danish biker
Gold member
Gold member
It took me a lot of research to get here, still don’t know how I could have managed with out the help from a great Irish guy and a great girl from Holland.

Starter or Sprag clutch failure  - Page 2 7d85b310


__________________________________________________
You have enemies? Good. That means you've stood up for something, sometime in your life.
-Sir Winston Churchill
    

59Back to top Go down   Starter or Sprag clutch failure  - Page 2 Empty Re: Starter or Sprag clutch failure Sun Apr 18, 2021 8:31 am

88

88
Life time member
Life time member
You are always welcome to what help can be given from a distance my Viking friend. Looking at that damage again there is no way that damage is related to the cleaning fluids used. They would have evaporated/burned off long before you got up to that speed. 

The failure looks similar to that on my own K1100RS engine. I bet if you strip it you will find major sings of high speed failure on the crank shaft bearings (shells) causing the crank and piston to interlock and shattering the Con rod to come out the top of the block. Interestingly mine went on number one cyclinder too!

If you do have to replace the sprag clutch you know where to come for help. 

You split the gearbox and final drive as before the you can remove the intermediate flange to get at it. 

Easy Peary Starter or Sprag clutch failure  - Page 2 8157


__________________________________________________
Starter or Sprag clutch failure  - Page 2 Ir-log11 88....May contain nuts!Starter or Sprag clutch failure  - Page 2 Ir-log11

"The world is a book and those who do not travel read only one page." - St. Augustine from 1600 years ago & still true!

K1100LT 1992 - AKA Big Red
K1100RS - 1995. AKA Rudolf Von Schmurf (in a million bits)
K1/RS - AKA Titan (unique hybrid by Andreas Esterhammer)
    

60Back to top Go down   Starter or Sprag clutch failure  - Page 2 Empty Re: Starter or Sprag clutch failure Sun Apr 18, 2021 9:44 am

Danish biker

Danish biker
Gold member
Gold member
@88 wrote:You are always welcome to what help can be given from a distance my Viking friend.

You split the gearbox and final drive as before the you can remove the intermediate flange to get at it. 

Easy Peary Starter or Sprag clutch failure  - Page 2 8157

You are the wizard 👍👍

Without your guidens I would NEVER have accomplished. 

Not only did I find a “online” mechanic but also a friend.


__________________________________________________
You have enemies? Good. That means you've stood up for something, sometime in your life.
-Sir Winston Churchill
    

61Back to top Go down   Starter or Sprag clutch failure  - Page 2 Empty Re: Starter or Sprag clutch failure Mon Apr 19, 2021 8:07 am

Danish biker

Danish biker
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Gold member
And here it is:

Starter or Sprag clutch failure  - Page 2 4ec33d10

    

62Back to top Go down   Starter or Sprag clutch failure  - Page 2 Empty Sprag Mon Apr 19, 2021 8:15 am

daveyson

daveyson
Life time member
Life time member
Bonus, thanks for the pics.


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

63Back to top Go down   Starter or Sprag clutch failure  - Page 2 Empty Re: Starter or Sprag clutch failure Mon Apr 19, 2021 12:00 pm

92KK 84WW Olaf

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I thought the crank case vent into the airbox is through the Z pipe??

Long time since i have seen a photo like that.


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011171 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 37,190 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 39.885miles.

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

64Back to top Go down   Starter or Sprag clutch failure  - Page 2 Empty Re: Starter or Sprag clutch failure Mon Apr 19, 2021 12:06 pm

Danish biker

Danish biker
Gold member
Gold member
@92KK 84WW Olaf wrote:

I thought the crank case vent into the airbox is through the Z pipe??

Long time since i have seen a photo like that.

I’m glad I’ve lived a life with a challenging job, and along with this alway been a wild boy and therefor been in many unpleasant situations. It was a “blast” but luckily I kept my head cold and only thought about getting safe to the emergency lane. With this been said I could have been with out this experience 😜

    

65Back to top Go down   Starter or Sprag clutch failure  - Page 2 Empty Re: Starter or Sprag clutch failure Tue Apr 20, 2021 10:25 am

tinyspuds

tinyspuds
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Life time member
I guess we can’t talk about bullet proof bottom ends anymore?


__________________________________________________
1985 BMW K100RT + Hedingham HUB and LL’s. VIN 0028106. (Not blind to the irony of an April 1 production date).
1986 K100RS in boxes. VIN 0141918.
1954 Royal Enfield 350 Bullet. Original.
    

66Back to top Go down   Starter or Sprag clutch failure  - Page 2 Empty Re: Starter or Sprag clutch failure Tue Apr 20, 2021 11:54 am

Laitch

Laitch
Life time member
Life time member
When it comes to blasts, this event might just have been a case of what goes around comes aroundSmile


__________________________________________________
1995 K75 81,000 miles
Starter or Sprag clutch failure  - Page 2 Usa-lo10
    

67Back to top Go down   Starter or Sprag clutch failure  - Page 2 Empty Re: Starter or Sprag clutch failure Wed Apr 21, 2021 3:10 pm

Danish biker

Danish biker
Gold member
Gold member
@Laitch wrote:When it comes to blasts, this event might just have been a case of what goes around comes aroundSmile

The only bad side of this story is that I after many thoughts and great help from my Irish friend, I got kind of high and said to myself:

GREAT now I’m getting a engine, where the sprang clutch isn’t fuc... up.

You should have heard me and seen my face, when the sprang clutch failed to engage twice on my first ride.

    

68Back to top Go down   Starter or Sprag clutch failure  - Page 2 Empty Re: Starter or Sprag clutch failure Wed Apr 21, 2021 3:20 pm

Laitch

Laitch
Life time member
Life time member
@Danish biker wrote:
@Laitch wrote:You should have . . .  seen my face, when the sprang clutch failed to engage twice on my first ride.
Now that you know how to post photos, don't miss the next opportunity. Use a selfie stick, too. Smile


__________________________________________________
1995 K75 81,000 miles
Starter or Sprag clutch failure  - Page 2 Usa-lo10
    

69Back to top Go down   Starter or Sprag clutch failure  - Page 2 Empty Re: Starter or Sprag clutch failure Wed Apr 21, 2021 3:21 pm

Laitch

Laitch
Life time member
Life time member
@Danish biker wrote:You should have . . .  seen my face, when the sprang clutch failed to engage twice on my first ride.
Now that you know how to post photos, don't miss the next opportunity. Use a selfie stick, too. Smile


__________________________________________________
1995 K75 81,000 miles
Starter or Sprag clutch failure  - Page 2 Usa-lo10
    

70Back to top Go down   Starter or Sprag clutch failure  - Page 2 Empty Re: Starter or Sprag clutch failure Wed Apr 21, 2021 3:26 pm

Danish biker

Danish biker
Gold member
Gold member
Starter or Sprag clutch failure  - Page 2 A56bd710


__________________________________________________
You have enemies? Good. That means you've stood up for something, sometime in your life.
-Sir Winston Churchill
    

71Back to top Go down   Starter or Sprag clutch failure  - Page 2 Empty Sprag clutch sticking Mon Apr 26, 2021 9:55 am

Kr4mo

Kr4mo
active member
active member
@daveyson wrote:When you say the former owner claimed the sprag is OK, that made me think it's second hand. Even a new one that slips a lot will soon have more wear than normal. 

You have a few options now to consider. I'd consider the easy ones first, that don't require dismantling the engine.
I have heard of people using a product like Rislone to clean the system and end this problem.  I have used it in other vehicles to free up sticky lifters.  Add the amount recommended to your oil and run the bike for a couple hundred miles then change the oil.  You can push/bump start your bike if needed to start and run it for this.

    

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