Attn: Peelout… What Happened Here?

Lightning78
Posts
6353
Joined
12/12/2007
Location
Huntington Beach, CA US
Edited Date/Time 10/30/2019 9:50am
Not my bike but saw this on facebook and wanted to see if you knew what caused this Laughing


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zehn
Posts
7861
Joined
1/15/2013
Location
Anchorage, AK US
10/28/2019 3:28pm
That bike probably is roached anyways
10/28/2019 3:38pm Edited Date/Time 10/28/2019 10:46pm
I just tightened my sprocket bolts on my z50 to get ready to be the first 1973 z50 to win the play bike class at the Elsinore Grand Prix. Stay tuned
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FWYT
Posts
3538
Joined
5/25/2014
Location
San Diego, CA US
10/28/2019 4:02pm
I was at Pala recently and started talking to the guys next to me. One of them mentions how he has already destroyed two rear wheels on his 2018 bike. A short time later, the dude's buddy goes "Hey Mike, you know your rear axle nut is almost off?"

HAHAHAHAHAHAHAA. He was almost about to destroy wheel #3, if not his body!
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GuyB
Posts
35722
Joined
7/10/2006
Location
Aliso Viejo, CA US
10/28/2019 4:48pm
I'm going to have to see the dyno chart for that bike to check how much torque it's had.
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The Shop

TeamGreen
Posts
36663
Joined
11/25/2008
Location
Thru-out, CA US
10/28/2019 4:56pm
WhereTF is The Peeler?!
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Skuzzy29
Posts
849
Joined
7/28/2014
Location
Central CA, CA US
10/28/2019 5:04pm
TeamGreen wrote:
WhereTF is The Peeler?!
Torquing bolts bro!
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kiwifan
Posts
9706
Joined
10/31/2009
Location
CA US
10/28/2019 5:04pm Edited Date/Time 10/28/2019 5:06pm
Not my bike but saw this on facebook and wanted to see if you knew what caused this :laugh: [img]https://p.vitalmx.com/photos/forums/2019/10/28/381761/s1200_Screenshot_2019_10_28_15_17_35.jpg[/img]
Not my bike but saw this on facebook and wanted to see if you knew what caused this Laughing


At a guess to cause that type of damage I would say chain is too tight, but then perhaps the chain would of snapped? Another possible theory is that the sprocket bolts were actually over-torqued?
JM485
Posts
5790
Joined
10/1/2013
Location
Davis, CA US
10/28/2019 5:08pm
“If I can’t straighten the mounting bracket”

Oh, you mean the one that’s bent at a 45 degree angle and half ripped off the swingarm? Not like that does anything important anyways right? I swear, some people shouldn’t be allowed to reproduce, or at least have their tools taken away for the greater goodPinch
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Spudnut
Posts
1943
Joined
6/25/2018
Location
WA US
10/28/2019 8:07pm
Where Art thou Peel
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1
mxrose3
Posts
2331
Joined
8/17/2006
Location
Delmar, DE US
10/29/2019 10:46am
Peely torque's his sprocket bolts everyday bro! Sometimes twice a day.
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peelout
Posts
18344
Joined
1/6/2011
Location
Ogden, UT US
10/29/2019 10:49am
i don't know fellas, this one looks like proper maintenance was taken by all parties. there's no way this was caused by neglect. could just be a case of the Monday's coupled with extremely bad luck.

yeah no fer sure
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Lightning78
Posts
6353
Joined
12/12/2007
Location
Huntington Beach, CA US
10/29/2019 10:52am
mxrose3 wrote:
Peely torque's his sprocket bolts everyday bro! Sometimes twice a day.
Then it's safe to say that his influence did not carry over onto this guy and his bike. Just look at how ovaled out those holes are! This guy clearly does not own a torque wrench Laughing
2
kb228
Posts
6154
Joined
1/31/2018
Location
Mansfield, OH US
10/29/2019 10:56am
Thats what happens when your valve spring is too stiff
10/29/2019 11:55am Edited Date/Time 10/29/2019 11:57am
Back in the day i'd torque sprocket bolts. Now I tighten them by feel with blue or red loctite...which ever of the two is available but on my rider's bike I have been using blue successfully. Note - on our race bikes we use new bolts with new sprockets. The practice bikes will use the old bolts based on condition before dumped.

One thing for sure is that if you have had bolts come loose and you catch it before shit starts breaking then you are in for long term problems.

I'll try and explain the best I can - What I have found and learnt by trial is if you've found your sprocket loose (after a ride) then your are in shit. When you have ridden with a sprocket and bolts that are coming loose, you will find that the bolt holes in your hub will have suffered various degrees of damage...the longer you have ridden with the loose bolts the more elongated the holes in your hub will be. The slightest wear in those holes will send you in the direction of a failure. You can keep tightening but will just be prolonging the inevitable....

I have found that even the slightest wear on the bolt holes (in the hub) will prompt a well torqued sprocket bolt set (even new) , with loctite to come loose. - first hand experience as we have put this to the test.

Furthermore, I have another theory which is debatable . I believe a over-tightened chain can contribute to sprocket bolt failure.

A chain which is too tight can upset suspension performance and gear shifting. It will also put unwanted load on your counter shaft bearing and seal. Then (I believe) extra load on your sprocket bolts) and wheel bearings.

This extra load can be transfered to the s/bolts...the thread can start pulling on your sprocket bolts ever so slightly, the hub holes will then start to wear from vibration etc and the whole lot starts heading south....towards failure.

Bikes are a luxury and expensive to maintain. The cheapest maintenance is "Preventative Maintenance"

I hope I made some sence and remember, we are never too old to learn...I still consider myself a part idiot.

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clemsonsc
Posts
93
Joined
3/12/2019
Location
Flat Rock, NC US
10/29/2019 12:15pm
Were you scrubin to the left ? Or right ? When that happened.
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plowboy
Posts
14131
Joined
1/3/2010
Location
Norwich, KS US
10/29/2019 5:22pm
This must only happen to really fast guys because in 47 years of riding I have never had even one loose sprocket bolt or failure. I only bought my first torque wrench a few months ago. I will admit to being a loctite fiend though. I'll also admit that I've raced an entire 3 hour hare scramble with a flat front tire and it didn't make me noticeably slower.
3
reded
Posts
3682
Joined
3/26/2011
Location
KS US
10/29/2019 5:44pm
plowboy wrote:
This must only happen to really fast guys because in 47 years of riding I have never had even one loose sprocket bolt or failure. I...
This must only happen to really fast guys because in 47 years of riding I have never had even one loose sprocket bolt or failure. I only bought my first torque wrench a few months ago. I will admit to being a loctite fiend though. I'll also admit that I've raced an entire 3 hour hare scramble with a flat front tire and it didn't make me noticeably slower.
I’ve never had issue with sprocket bolts but a flat front on my 350 makes it feel like I’m trying to steer an 1960’s grain truck while sitting still. I thought the steering head bearings were locking up.
Jordan421
Posts
1910
Joined
12/5/2007
Location
Lakeland, FL US
10/29/2019 5:45pm
GuyB wrote:
I'm going to have to see the dyno chart for that bike to check how much torque it's had.
Rumor has it that he has a purple power band
bvm111
Posts
10081
Joined
7/1/2008
Location
Las Vegas, NV US
10/29/2019 7:36pm
Put a drop of red loctite in the counter sunk part of the sprocket and blue loctite on the threads and torque to spec. I have been riding since 1986 and have never had a bolt come loose.
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ledger
Posts
3669
Joined
1/17/2013
Location
TN US
10/29/2019 8:07pm
The Rental decal looks to be applied properly.
FWYT
Posts
3538
Joined
5/25/2014
Location
San Diego, CA US
10/29/2019 11:06pm
bvm111 wrote:
Put a drop of red loctite in the counter sunk part of the sprocket and blue loctite on the threads and torque to spec. I have...
Put a drop of red loctite in the counter sunk part of the sprocket and blue loctite on the threads and torque to spec. I have been riding since 1986 and have never had a bolt come loose.
Whoooo . . . that's a good idea. I'll have to try that, thanks!
(Not that I've had an issue with loose sprocket bolts but I do like the extra insurance.)
Could also apply that same idea to other areas, too!
mxrose3
Posts
2331
Joined
8/17/2006
Location
Delmar, DE US
10/30/2019 6:35am
peelout wrote:
i don't know fellas, this one looks like proper maintenance was taken by all parties. there's no way this was caused by neglect. could just be...
i don't know fellas, this one looks like proper maintenance was taken by all parties. there's no way this was caused by neglect. could just be a case of the Monday's coupled with extremely bad luck.

yeah no fer sure
I'm really disappointed in your response bro
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10/30/2019 6:39am
Redneck solution.....


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10/30/2019 8:25am
I don't know about you dumb-sheets, but I'm off to get my torque wrench calibrated.
1
kkawboy14
Posts
11486
Joined
6/5/2015
Location
TX US
10/30/2019 8:39am
TeamGreen wrote:
WhereTF is The Peeler?!
Turkish prison!
BW908
Posts
42
Joined
10/26/2019
Location
Glenwood Springs, CO US
10/30/2019 9:50am
Factory edition

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