Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[fkjunkin]

Just wondering how many people have actually experianced crank failure in their cvo? Is this a real issue or just a personal preference? If adding more power how much would you have to add for this to be an issue? Thanks

[hd-dude]

Twisted cranks are not near as common as failed rod bearings. I have two CVO's in the shop now with bad bearings in the rods. Typically Cranks shift when they are abused, burn outs and wheelies ......

[FlaHeatWave]

My Dealer sees more front rod bearings go out than just about anything else...

[pkl]

Had a bad rod bearing and when repairing had crank welded. Have since heard that the other side can then cause a problem but I haven't had a problem. I don't(didn't) ride hard just happened on a trip thru the mountains.

[HILLSIDECYCLE.COM]

Burn outs, while very aggressive-looking, won't cause a wheel set to slip, but attempting to bring the f/wheel up will, at least from what we've seen.
Scott

[deldago]

I'll bet Steve at Fullsac has a welded crank!

[prodrag1320]

Burn outs, while very aggressive-looking, won't cause a wheel set to slip, but attempting to bring the f/wheel up will, at least from what we've seen.
Scott

burnouts,probley not,hole shots,defanatly yes.just welding the crank really wont keep it from moving,here we machine 1/2 thru the crank,1/2 thru the F/W and press in .250 pins,then weld over that,pretty rock solid.(and rod bearings are a bigger prob)

[HILLSIDECYCLE.COM]

No doubt on the hole-shots.
A 3rd or 4th gear burnout, starting on a damp/wet surface will break the tire loose quite easily, w/o a lot of shock to the driveline, if the bike has any real power whatsoever.
The bike will just "float" between your legs.
How do I know this...........
Scott

[deldago]

Looks like I better look into welding,as my old Heritage did miles of hole shots in it's lifetime!

[FlaHeatWave]

burnouts,probley not,hole shots,defanatly yes.just welding the crank really wont keep it from moving,here we machine 1/2 thru the crank,1/2 thru the F/W and press in .250 pins,then weld over that,pretty rock solid.(and rod bearings are a bigger prob)

Is there anything to keep the rod bearings from going out?
Do the Carillo rods make much of a difference as far as longevity in a touring motor??

[HILLSIDECYCLE.COM]

A Carillo rod is certainly a top quality product.
Scott

[Thermodyne]

So what is failing in the rod bearings?  Bad crank pins?  Poor fit?  Poorly designed oiling system pumping tappet roller trash through the engine?

[grc]

So what is failing in the rod bearings?  Bad crank pins?  Poor fit?  Poorly designed oiling system pumping tappet roller trash through the engine?

All of the above would be my guess, along with the "low cost versus quality" part sourcing factor common to many issues at H-D. 

Jerry

[hd-dude]

Here are a couple picture of what the rods look like that have failed...

Outer / Rear Rod

[hd-dude]

And the really ugly inner / front rod....

[hd-dude]

The roller bearings in these don't look or feel bad, my guess is the rods have hard surface failures and/or they are stretching.

[deldago]

Those are trashed,how many miles on them?

[hd-dude]

These examples were under 15K if I recall correctly, the bike was rode hard!

[Thermodyne]

Both pictures look like it started with the races failing.  Which would at face value seem strange.  That was a proven part that almost never failed in the past.  So it would be safe to assume that the MoCo has made a change to the fit and finish or materials used. 

[sloride]

Guy's,

forgive me here for asking a dumba$$ question, but for us guys that will never do a burnout, never do a true drop the clutch holeshot or heaven forbid try and get this 850# beast up on one back tire. Our our Cranks, Rods and bearings a concern?

I love doing second gear roll on the throttle spin it to 6000RPM and go thru 4th-5th gear. Am I hurting this motor doing this

Should we worry about this stuff? I asked my dealer (and yes I do thrust this guy) and he told me to buy the 5 year warranty and ride it like I stole it.

[ultrafxr]

Guy's,

forgive me here for asking a dumba$$ question, but for us guys that will never do a burnout, never do a true drop the clutch holeshot or heaven forbid try and get this 850# beast up on one back tire. Our our Cranks, Rods and bearings a concern?

I love doing second gear roll on the throttle spin it to 6000RPM and go thru 4th-5th gear. Am I hurting this motor doing this

Should we worry about this stuff? I asked my dealer (and yes I do thrust this guy) and he told me to buy the 5 year warranty and ride it like I stole it.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Good advice for the 110s especially - no matter how hard you ride, imo.  Their longevity is a crapshoot and premature component failure all too common.

[mikegiotto]

I agree ride your bike however you want if it makes you happy do it, life is too short not to have fun. Look on the bright side if it breaks that is one more mod you can enjoy doing.

[prodrag1320]

Guy's,

forgive me here for asking a dumba$$ question, but for us guys that will never do a burnout, never do a true drop the clutch holeshot or heaven forbid try and get this 850# beast up on one back tire. Our our Cranks, Rods and bearings a concern?

I love doing second gear roll on the throttle spin it to 6000RPM and go thru 4th-5th gear. Am I hurting this motor doing this

Should we worry about this stuff? I asked my dealer (and yes I do thrust this guy) and he told me to buy the 5 year warranty and ride it like I stole it.

not abusing the bike will help is not shifting the f/w`s,but will have little effect of weather the rod bearings go or not

[FlaHeatWave]

Guy's,

forgive me here for asking a dumba$$ question, but for us guys that will never do a burnout, never do a true drop the clutch holeshot or heaven forbid try and get this 850# beast up on one back tire. Our our Cranks, Rods and bearings a concern?

I love doing second gear roll on the throttle spin it to 6000RPM and go thru 4th-5th gear. Am I hurting this motor doing this

Should we worry about this stuff? I asked my dealer (and yes I do thrust this guy) and he told me to buy the 5 year warranty and ride it like I stole it.

There are several schools of thought on this, I wonder if people are operating to low in the RPM range (lugging) and not realizing it since the engine management is so smooth and accommodating and doesn't 'buck' at lower RPMs and allows the 110s to pull cleanly from 1800rpm in the upper gears? ~ the firing (power) pulses timed too far apart and beating the rollers (front rod bearings)~ And then, there is the school of thought (please don't beat me up too bad on this ) that the synthetic oil allows the rollers to slide. I run synthetic except for the initial run-in (500 or so miles) on new rings. 

S&S puts 2 more rollers in their rods, for a reason, and I have yet to hear anything about any issues with the S&S cranks?
~ Would like to hear from the builders on this ~
 
I keep it above 2100 - 2200 in the lower gears, and more than that in the upper gears.

I love doing second gear roll on the throttle spin it to 6000RPM and go thru 4th-5th gear.

Me too, I would never own a bike that wouldn't do this on a regular basis (that's why I had to get rid of the 255s in the '09)

Let's not forget planned obsolescence / cost cutting, by the MoCo...

Enough of this, I gotta ride... (I love Florida!!!)

 

[prodrag1320]

S&S rods have races in the big ends,a BIG reason your not hearing about rod bearings going south on S&S f/w assy`s

[spada84]

 
I keep it above 2100 - 2200 in the lower gears, and more than that in the upper gears.


 

Makes me think of an informal survey someone in the Moto Guzzi club did about engine longevity.   They asked all of the guys that had over 100K miles on their engines (850cc or larger air cooled push rod v-twins) how they got that many miles without failure/repair/rebuild.  Most common answers were:
-Change the oil regularly
-Warm up the engine before riding hard
-Keep the motor internals stock
-Never ride below 3000 RPM