Some of you guys are starting to scare meAt anything other than 90 degrees to the shaft the reading will be lower, not greater. At 45 degrees it will be half the reading of 90 degrees.
Ron

 

Stopped in at the local dealer, even though they never get to touch my ride, I still stop in to shoot the bull with them from time to time.

I was explaining the .0005 runout on the crank I just installed and they both (svc mgr and tech writer) laughed in that they both know what a joke the HD spec of .012 is. They do feel bad that they have to keep telling customers, that the vibration they feel is normal. They too indicated that HD is banking on the bikes being out of warranty prior to the cranks getting beyond that limit.

Its a damn shame is all I can say.

 

I could be wrong, but don't think so. Don't forget, it's the shaft that's moving away from the dial indicator, so if it's at an angle, it has to travel further at an angle than it would straight up and down.

I used a peacock lever type dial indicator and didn't have to worry about this.

 

Taterdog, you are correct. I wish some of the big hitters would jump in as they could explain it much better than me. the above link in one of my previous posts makes it pretty clear. Hopefully Hillside or mdhd88 will jump in and explain it better. Give Bob Woods of woods cams and carbsfame a call and he will explain it to you.

 

Upon further investigating and acually trying it at the shop a higher reading will occur at an angle rather than 90 degrees. It'sthat old triangle thingy coming into play. Anybodyknow of a good spice thatgoes withCROW ? Same thing applys to the lever type indicators in relation to pivot angle.
Ron

 

So let me ask you guys a question. Suppose your TIR is llike .0025. Or .0015. Either would be okay for a gear drive install. Will the TIR increase with engine age and wear at some point in time making the runout too much??

 

[/quote]
Upon further investigating and acually trying it at the shop a higher reading will occur at an angle rather than 90 degrees. It'sthat old triangle thingy coming into play. Anybodyknow of a good spice thatgoes withCROW ? Same thing applys to the lever type indicators in relation to pivot angle.
Ron
[/quote]

We should never stop learning. I am glad you tried it at a shop to see kind cool when you see it for yourself aint it?

 

There are many things that can cause pinion runout. If you are goingfast and shift into too low of a gear and dump the clutch it can cause it, locking up your rear tire without using clutch can cause it.really cranking on the power with a high power engine can cause it. Just mileage and normal engine wear and tear should not be of much concern. Apparently later models post 04 are more prone then pre 04's due to forged vs cast cranks. Last I checked mine at over 50,000 miles mine had not changed from .0015. mine is an 04 with mild build.

 

That's a very good question, mike. Under most circumstances I'd imagine the TIR would not change unless the crankshaft goes bad and scissors or perhaps the bearings or bushings fail, but if that happens the crankshaft, bearings, bushings would need to be replaced anyway. I don't believe this is a common occurrence, so if the measured TIR is within limits, it should stay within limits. Maybe someone else here who knows more than I do can chime in. May be a good question for you to call S&S or Andrews about. If you do be sure and come back and post what you find.

 

It's all got to do with crappy qc and design. Japs had this problem years ago. They fixed the problem whereas Hd could care less, and acutally went backwards. Generally if you got a good one, it should hold whatever runout it came with unless you get nuts with it.
Ron