Another Gear/Cam Question
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Elite HDF Member
Joined: Jul 2006
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From: Rio Grande Valley-Texas
Another Gear/Cam Question
Greetings,
Here is the question about gear driven cams. I understand about checking the crank run out prior to installation and also about checking gear backlash and such. After all the checking, installation and reassembly occurs, during normal operations as all parts wear thru normal operations, what happens to the critical check points that were done before. Is the crank run out and backlash not an issue again, as far as the cams/gears are concerned. What I am asking I guess, say the tolerances are within limits but on the extreme limits is this just short time until something needs to be fixed or do the parts wear together and its not an issue. Hope this is clear and not too much in a circle.
Here is the question about gear driven cams. I understand about checking the crank run out prior to installation and also about checking gear backlash and such. After all the checking, installation and reassembly occurs, during normal operations as all parts wear thru normal operations, what happens to the critical check points that were done before. Is the crank run out and backlash not an issue again, as far as the cams/gears are concerned. What I am asking I guess, say the tolerances are within limits but on the extreme limits is this just short time until something needs to be fixed or do the parts wear together and its not an issue. Hope this is clear and not too much in a circle.
Road Warrior
Joined: Mar 2007
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From:
Greetings,
Here is the question about gear driven cams. I understand about checking the crank run out prior to installation and also about checking gear backlash and such. After all the checking, installation and reassembly occurs, during normal operations as all parts wear thru normal operations, what happens to the critical check points that were done before. Is the crank run out and backlash not an issue again, as far as the cams/gears are concerned. What I am asking I guess, say the tolerances are within limits but on the extreme limits is this just short time until something needs to be fixed or do the parts wear together and its not an issue. Hope this is clear and not too much in a circle.
Here is the question about gear driven cams. I understand about checking the crank run out prior to installation and also about checking gear backlash and such. After all the checking, installation and reassembly occurs, during normal operations as all parts wear thru normal operations, what happens to the critical check points that were done before. Is the crank run out and backlash not an issue again, as far as the cams/gears are concerned. What I am asking I guess, say the tolerances are within limits but on the extreme limits is this just short time until something needs to be fixed or do the parts wear together and its not an issue. Hope this is clear and not too much in a circle.
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Road Warrior
Joined: Jan 2007
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From: Belmont, MI
After I got the bike home ( I actually rode it 2 miles) and started taking things apart it was pretty obvious what the problem was. Besides the broken gear a gap was visible between the pinion shaft and the bushing. Needless to say there were many other trashed parts. The oil pump was shot as well as the cam plate being cracked. I split the cases and sent the crank off to Darkhorse and was told by them it was not repairable. They sent me a rebuilt, balanced and Proplugged stock crank which has withstood as much abuse as I can throw at it with my 98" motor. The new crank has also made the motor much smoother. I also had the Timken conversion done so it can handle a little more power which I intend to give it over the winter.
Rick
Last edited by Egldr05; Dec 18, 2008 at 11:22 AM.
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