Gear Cams...Shaft run-out?
Banned
Joined: Mar 2007
Posts: 3,706
Likes: 7
From: Woodstock, Ont , Can
RE: Gear Cams...Shaft run-out?
Some of you guys are starting to scare me
At 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
At 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
Ultimate HDF Member
Joined: Feb 2007
Posts: 7,663
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From: Northeast Ohio
RE: Gear Cams...Shaft run-out?
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 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.
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Joined: Oct 2006
Posts: 2,183
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From: Lenexa, KS (KC)
RE: Gear Cams...Shaft run-out?
ORIGINAL: rbabos
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
Some of you guys are starting to scare me
At 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
I used a peacock lever type dial indicator and didn't have to worry about this.
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Joined: Oct 2007
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RE: Gear Cams...Shaft run-out?
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.
Banned
Joined: Mar 2007
Posts: 3,706
Likes: 7
From: Woodstock, Ont , Can
RE: Gear Cams...Shaft run-out?
ORIGINAL: Taterdog
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.
ORIGINAL: rbabos
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
Some of you guys are starting to scare me
At 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
I used a peacock lever type dial indicator and didn't have to worry about this.
Ron
Road Master
Joined: Dec 2007
Posts: 885
Likes: 14
From: SoCal
RE: Gear Cams...Shaft run-out?
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??
Outstanding HDF Member
Joined: Oct 2007
Posts: 3,437
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RE: Gear Cams...Shaft run-out?
[/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?
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RE: Gear Cams...Shaft run-out?
ORIGINAL: mike_oh
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??
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??
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Joined: Oct 2006
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From: Lenexa, KS (KC)
RE: Gear Cams...Shaft run-out?
ORIGINAL: mike_oh
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??
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??
Banned
Joined: Mar 2007
Posts: 3,706
Likes: 7
From: Woodstock, Ont , Can
RE: Gear Cams...Shaft run-out?
ORIGINAL: mike_oh
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??
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??
Ron
