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Recent odd failures on bikes that have come into my shop...

Started by Speeddog, May 28, 2009, 01:51:31 PM

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ellingly

#60
May 14, 2013, 01:47:56 AM
Love looking at mechanical dramas. Had one of the fiancee's race bike the other week... Comes in after the last race "after the start, the clutch doesn't work and it makes funny noises". No matter how much you pull on the lever, it was rock solid and no clutch. Very strange. Chucked it in neutral - she did the whole race in 3rd and up as reckoned it was too hard to change back to lower gears, and noting it's a 2 stroke... - and loaded it up on the trailer.

Pulled it apart at home, noticed the entire clutch hub could move in and out. Oh sweet, clutch nut has backed off, easy fixed. Nope, clutch nut perfectly on there... bearing retainer for input shaft to gearbox had snapped and the entire input shaft was floating in and out 10-15mm... Carnage ensued inside the gearbox, 1st hit 6th (weird gearbox design) and the teeth spat out and ran into 2nd gear, so that's 3 gears that were toast. Very surprising the box didn't lock up and spit her off, to be honest.
Team Ghetto Racing: motorcycle racing and riding on a budget
2006 Ducati MS2R1000 road | 1973 Suzuki GT250 cafe race | 1982 Yamaha RD250LC race | 1991 Suzuki GSXR750 perpetual project | 1984 Suzuki TS250x vintage enduro | 1997 Honda CT110 postie of death | 1982 Kawasaki KH100 bucket racer

uclabiker06

#61
May 22, 2013, 05:56:57 PM
My my, what interesting oddities Mr. Nick....and pics to boot   [bacon] [bacon] [bacon]
Life is never ours to keep, we borrow it and then we have to give it back.
2006 S2R
2009 Smart

Greg

#62
May 24, 2013, 07:31:26 PM
Hopefully not thread jacking, but here is a collection of interesting failures combined with some dubious custom mods and a few home repair fails.

https://www.facebook.com/photo.php?fbid=397856553610667&set=a.374315505964772.86299.100001589764053&type=1&theater

Enjoy
2012 M1100 Evo with Termis

OzzyRob

#63
May 25, 2013, 03:12:53 PM
Great eye for detail mate, belt tensioner is something I'll keep an eye on.  [thumbsup]

Thread is a bloody good read, once again thanks.

ducatiz

#64
May 25, 2013, 03:37:58 PM
 [puke]

Inaccessible facebook page.  Probably a private group or user page



Quote from: Greg on May 24, 2013, 07:31:26 PM
Hopefully not thread jacking, but here is a collection of interesting failures combined with some dubious custom mods and a few home repair fails.

https://www.facebook.com/photo.php?fbid=397856553610667&set=a.374315505964772.86299.100001589764053&type=1&theater

Enjoy

Check out my oil filter forensics thread!                     Offended? Click here
"Yelling out of cars, turning your speakers out the window to blast your music onto the street, setting off M-80 firecrackers, firing automatic weapons into the airâ€"these are all well and good. But none of them create a merry atmosphere of insouciance and bonhomie quite like a revving motorcycle.

Speeddog

#65
June 11, 2014, 02:48:39 PM
'08 1098S brought in for a clicking noise coming from the triples.

That's a 0.015" plastic shim stuck in there.

- - - - - Valley Desmo Service - - - - -
Reseda, CA
(951) 640-8908

~~~ "We've rearranged the deck chairs, refilled the champagne glasses, and the band sounds great. This is fine." - Alberto Puig ~~~

Speeddog

#66
February 07, 2017, 04:46:13 PM
Not an odd failure this time, just poorly assembled aftermarket bits.
This kind of thing makes the hair on my neck stand up.
Normal use of the bike easily could have led to a catastrophic failure.

'94 Elefant 900.
Aftermarket brake lines and crash bars installed.

For turning to the right, the brake hose is occasionally being used as a steering stop, being pinched between the fork leg and the crossbar link for the crashbars.



For turning to the left, the brake line fitting is being used as the steering stop, fouling on part of the fairing support (solidly bolted to the frame).
Lines attach to a junction block bolted to the lower triple.
This did, however, stop the fork leg from pinching the hose on the left side.

The bonus is that the improperly positioned crossbar is low enough to jam the low-mount fender into the tire when the front end is nearly bottomed out.
Probably couldn't jam hard enough to lock the front on pavement, but guaranteed faceplant in the dirt.


- - - - - Valley Desmo Service - - - - -
Reseda, CA
(951) 640-8908

~~~ "We've rearranged the deck chairs, refilled the champagne glasses, and the band sounds great. This is fine." - Alberto Puig ~~~

Monsterlover

#67
February 07, 2017, 04:48:10 PM
Holy crap
"The Vincent was like a bullet that went straight; the Ducati is like the magic bullet in Dallas that went sideways and hit JFK and the Governor of Texas at the same time."--HST    **"A man who works with his hands is a laborer.  A man who works with his hands and his brain is a craftsman.  A man who works with his hands, brains, and heart is an artist."  -Louis Nizer**

DarkMonster620

#68
February 07, 2017, 04:50:51 PM
 :o :o :o
Carlos
I said I was smart, never that I had my shit together
Quote from: ducatiz on March 27, 2014, 08:34:34 AMDucati is the pretty girl that can't walk in heels without stumbling. I still love her.
"When you have eliminated all which is impossible, then whatever remains, however improbable, must be the truth."

Langanobob

#69
February 08, 2017, 12:09:01 PM
I've got a bike or two that I've owned for many years.  When working on them I sometimes run across something I did a long time ago that is cringeworthy.  Not as bad as the stuff posted here but still...

My excuse that I tell myself is at the time I did the work I didn't have the money to do it right but that does not wash.

koko64

#70
February 08, 2017, 12:15:04 PM
Rogue Elefant .
2015 Scrambler 800

chipripper

#71
February 09, 2017, 04:15:17 PM
This is my favorite thread by far.  [thumbsup] Thanks for posting these stories speeddog, and for always answering my questions in the tech section. Me and my bike would be grounded if it weren't for the helpfulness of DMFers.

I want to share my recent notes from my major service I am in the middle of, after having the bike sit for 7 months.

2 spark plugs were not even hand tight

bolts holding on ECU were not even hand tight

ECU ground bolt? was about to fall out

Alternator inspection cover bolts were very loose

And I always use a torque wrench to re-assemble, as I am a notorious bolt breaker. I will definitely be increasing the frequency with which I inspect things on the DUC.
2008 S2R1000 black and white, mostly stock ;-)
Marving header, Velocity stacks, Pod filters, Flashed ECU to DP map, Polished valve covers and cam covers, SSR reverse shifter and inspection cover, Aelle adjustable pegs, Windscreen and cowl removal, Many plastic bits removed, Cut beer tray

ducpainter

#72
February 09, 2017, 04:21:46 PM
Blue Loctite is your friend.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


DuciD03

#73
February 13, 2017, 08:36:17 PM
Quote from: ducpainter on February 09, 2017, 04:21:46 PM
Blue Loctite is your friend.

+1;

+1;yes, interesting thread; and alarming findings indeed.
.... all the world is yours.

ducatiz

#74
February 15, 2017, 12:37:18 PM
Quote from: ducpainter on February 09, 2017, 04:21:46 PM
Blue Loctite is your friend.

purple loctite if you want a little more friendship, but aren't able to commit
Check out my oil filter forensics thread!                     Offended? Click here
"Yelling out of cars, turning your speakers out the window to blast your music onto the street, setting off M-80 firecrackers, firing automatic weapons into the airâ€"these are all well and good. But none of them create a merry atmosphere of insouciance and bonhomie quite like a revving motorcycle.
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