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What caused your drive shaft failure? |
Rear U-joint |
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75% |
[ 3 ] |
Front U-joint |
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25% |
[ 1 ] |
Other (please explain) |
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0% |
[ 0 ] |
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Total Votes : 4 |
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Flying Duck PsyKotic Waterfowl
Joined: 27 Jan 2005 Posts: 10085 Location: Bumf***, WA
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Posted: Mon Aug 07, 2017 9:03 am Post subject: Drive shaft failure poll |
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From what I've seen most, if not all, drive shaft catastrophes are caused by the rear U-joint "exploding."
Curious if anyone has had either the front U-joint explode or other drive shaft issues. _________________ 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 |
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SugarHillCTD Site Admin
Joined: 10 Oct 2007 Posts: 4240 Location: Now in Eastern Pennsylvania
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Posted: Mon Aug 07, 2017 10:12 am Post subject: |
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I have to add to my answer-
While it is my rear U joint that failed, several years ago I made the mistake of replacing just the front joint since the rear joint felt smooth and tight to me.
So my rear failure is my fault.......
Conclusion? If one joint needs to be replaced, REPLACE BOTH. _________________ John & Cathy
'92 K100RS4V Pearl White SOLD
'04 K1200GT
IBA Several-SS1k, BBG, 50CC NYC to S.F. |
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Flying Duck PsyKotic Waterfowl
Joined: 27 Jan 2005 Posts: 10085 Location: Bumf***, WA
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Posted: Mon Aug 07, 2017 11:47 am Post subject: |
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The reason I started this thread was in regards to what spares to carry when out touring far from home.
I always carry spare clutch and throttle cables.
Thought it might be a good idea to also carry a backup for the drive shaft. Carrying a whole drive shaft is bulky and heavy but figured that if the rear U-joint is usually what fails then it might make sense just to carry the rear half which weighs a lot less than the whole assembly and doesn't take up much room. (and also a 12mm Allen wrench for the inner rear pivot) _________________ 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 |
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SugarHillCTD Site Admin
Joined: 10 Oct 2007 Posts: 4240 Location: Now in Eastern Pennsylvania
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Posted: Mon Aug 07, 2017 4:13 pm Post subject: |
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Yeah, I always carry spare clutch and throttle cables also but (until recently )
never thought of driveline parts. _________________ John & Cathy
'92 K100RS4V Pearl White SOLD
'04 K1200GT
IBA Several-SS1k, BBG, 50CC NYC to S.F. |
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BobZ(IL) Flying Brick Rider
Joined: 20 May 2007 Posts: 651 Location: Bourbonnais, IL
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Posted: Tue Aug 08, 2017 10:11 pm Post subject: |
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I've had the drive shaft go far from home, but I'm still not keen on loading up with spare parts. I've had so many trouble free miles. _________________ '93 K1100LT
'78 R100S
'05 R1200GS
BMWMOA, CRBMWOA, ABC, K11OG #997
Live well, do good work, enjoy the ride. |
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N41EF Flying Brick Rider
Joined: 23 Mar 2014 Posts: 406 Location: Aiken, SC
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Posted: Tue Aug 08, 2017 10:15 pm Post subject: |
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Maybe the answer is to have a spare drive shaft at home, that can be sent overnight to you? Don't know I'd want to haul one on the bike, but it would fit in a large overnight UPS box with the tools. _________________ 2014 R1200RT Water Cooled
2001 R1100S Light
1993 K1100LT. Nissan Ice Blue.(Gone) |
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Alan Walker Brick Rider
Joined: 26 Jul 2011 Posts: 32 Location: Tulsa, OK
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Posted: Sat Aug 19, 2017 7:28 pm Post subject: Driveshaft Failure |
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I have never had a u-joint failure but have had failure of the rubber insert within the driveshaft. It would slip worse after bike had warmed up and progressively get worse the longer rode. _________________ 95 K1100LT Current ride
05 Suzuki DL650 sold
86 Honda Nighthawk 450 sold
76 Honda CB400F sold |
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Flying Duck PsyKotic Waterfowl
Joined: 27 Jan 2005 Posts: 10085 Location: Bumf***, WA
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Posted: Sun Aug 20, 2017 9:13 am Post subject: Re: Driveshaft Failure |
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Alan Walker wrote: | I have never had a u-joint failure but have had failure of the rubber insert within the driveshaft. It would slip worse after bike had warmed up and progressively get worse the longer rode. |
Interesting, never heard of that one but I see how that might happen.
At least that one doesn't leave you dead in the water like a blown up U-joint and you can still ride the bike. _________________ 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 |
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Scott_Anderson Site Admin
Joined: 05 Sep 2006 Posts: 3119 Location: Central Iowa, USA
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Posted: Sun Aug 20, 2017 12:18 pm Post subject: |
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One thing is for sure, once that rubber starts slipping you loose your phasing of the drive shaft joints and I would think you start to get some nasty vibrations. _________________ 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.) |
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jay k. Mad Brick Rider
Joined: 17 Apr 2003 Posts: 93 Location: E. Haddam, CT
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Posted: Mon Aug 21, 2017 7:28 pm Post subject: |
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What should the angle between the FD and the drive shaft be? Is there a spec for that?
I bought an adjustable paralever strut from Realm Engineering because I'm running a rear wheel from a K1200 (17"x5.5" wide) and want to raise the ride height back to stock.
Thx - Jay _________________ '20 R1250RS - The RS
'96 K1100RS/SE - The Bagger
'05 R1100S Boxer Cup Replica - The Boxer
'14 Ducati Monster 1200S - The Duc
'84 Kawasaki GPz 1100 - The Gypsy |
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Flying Duck PsyKotic Waterfowl
Joined: 27 Jan 2005 Posts: 10085 Location: Bumf***, WA
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Posted: Mon Aug 21, 2017 7:38 pm Post subject: |
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jay k. wrote: | What should the angle between the FD and the drive shaft be? Is there a spec for that?
I bought an adjustable paralever strut from Realm Engineering because I'm running a rear wheel from a K1200 (17"x5.5" wide) and want to raise the ride height back to stock.
Thx - Jay |
http://www.kbikeparts.com/classickbikes.com/ckb.tech/0.ckb.tech.files/dsphase/dsphase.htm _________________ 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 |
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jay k. Mad Brick Rider
Joined: 17 Apr 2003 Posts: 93 Location: E. Haddam, CT
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Posted: Mon Aug 21, 2017 8:45 pm Post subject: |
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Thanks.
That's phasing.
But what about the angle between the shaft and the bevel gear?
Should it be as straight a line as possible? _________________ '20 R1250RS - The RS
'96 K1100RS/SE - The Bagger
'05 R1100S Boxer Cup Replica - The Boxer
'14 Ducati Monster 1200S - The Duc
'84 Kawasaki GPz 1100 - The Gypsy |
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Jim Site Admin
Joined: 17 May 2003 Posts: 3840 Location: WHERETHEFUNNEVERENDS
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Posted: Mon Aug 21, 2017 11:10 pm Post subject: |
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jay k. wrote: |
But what about the angle between the shaft and the bevel gear?
Should it be as straight a line as possible? |
That would be ideal. _________________ Jim
1997 K1100LTSE 94,000 - has gremlins!
1995 R100RT Classic 16,650 crashed - repairing
1992 K75RTP 46,000
1992 R100R 24,000 - FOR SALE
"We shall not all die, but we shall all be changed." |
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Flying Duck PsyKotic Waterfowl
Joined: 27 Jan 2005 Posts: 10085 Location: Bumf***, WA
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Posted: Mon Aug 21, 2017 11:39 pm Post subject: |
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jay k. wrote: | Thanks.
That's phasing.
But what about the angle between the shaft and the bevel gear?
Should it be as straight a line as possible? |
That would be a monolever. _________________ 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 |
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Back to top |
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SugarHillCTD Site Admin
Joined: 10 Oct 2007 Posts: 4240 Location: Now in Eastern Pennsylvania
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Posted: Tue Aug 22, 2017 7:49 am Post subject: |
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jay k. wrote: | Thanks.
That's phasing.
But what about the angle between the shaft and the bevel gear?
Should it be as straight a line as possible? |
Actually the optimum would be the same as the angle between the transmission output and the shaft. This was posted a few weeks ago. Look at : 45
https://youtu.be/Idk3BVDVHq4 _________________ John & Cathy
'92 K100RS4V Pearl White SOLD
'04 K1200GT
IBA Several-SS1k, BBG, 50CC NYC to S.F. |
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Jim Site Admin
Joined: 17 May 2003 Posts: 3840 Location: WHERETHEFUNNEVERENDS
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Posted: Wed Aug 23, 2017 10:44 am Post subject: |
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Thanks, John - that's what I meant. _________________ Jim
1997 K1100LTSE 94,000 - has gremlins!
1995 R100RT Classic 16,650 crashed - repairing
1992 K75RTP 46,000
1992 R100R 24,000 - FOR SALE
"We shall not all die, but we shall all be changed." |
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