Gear Cams
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Cruiser
Joined: Mar 2009
Posts: 143
Likes: 1
From: FL
It Shouldn't be too bad to change if I can get it off without having remove the Cam gear too. Hate having to re-adjust pushrods etc...
Last edited by timber0472; Oct 2, 2015 at 10:36 AM.
Thread Starter
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Cruiser
Joined: Mar 2009
Posts: 143
Likes: 1
From: FL
So if I were to go with an undersized pinion gear, how would I put that on?
Would I have to pull the pushrods, cam gear and pinion gear - then put it all back together? Or could I just pull the pinion gear with the marks lined up with the cam gear (Rear wheel on the ground in gear)? Really dont want to go thru adjusting pushrods again if not necessary.
Would I have to pull the pushrods, cam gear and pinion gear - then put it all back together? Or could I just pull the pinion gear with the marks lined up with the cam gear (Rear wheel on the ground in gear)? Really dont want to go thru adjusting pushrods again if not necessary.
Thread Starter
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Cruiser
Joined: Mar 2009
Posts: 143
Likes: 1
From: FL
Yea man thanks. I'm looking into it. I figured something was wrong. Thanks for the input.
Road Captain
Joined: Aug 2015
Posts: 578
Likes: 522
From: Durango CO
Can someone please give an overview?
If I install cam gears I would check gear backlash? Some gears (such as car differentials) you use shims to adjust gear meshing. But with cam gears you get different size gears?? How do you know what gear needs to be bigger or smaller?
If I install cam gears I would check gear backlash? Some gears (such as car differentials) you use shims to adjust gear meshing. But with cam gears you get different size gears?? How do you know what gear needs to be bigger or smaller?
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Cruiser
Joined: Mar 2009
Posts: 143
Likes: 1
From: FL
I pulled the cover and plugs. The outer gear looks to be the problem. I can see that when I rotate the wheel there is NO GAP between the teeth of the pinion and the cam. I wish I had understood all this sooner but eh gotta learn some way. I dont have a way to check gear lash with any tools. Dont really know what Im doing with that but according to what Ive seen there should be a small visually noticeable gap between the teeth. Mine has a very tiny gap between the valley of one tooth and the tip of the one meshing, but from side to side is almost nothing. Fortunately (again visually) it looks to be the same all the way around. Does this sound like the problem? I know its not accurate but again at the moment I dont have any way of checking.
The inner gears...when I got the set back already pressed in the camplate they spun free as can be. Again I didnt at that time know what to really check or even how to. I assume that when you receive a kit things are supposed to be put together correctly and I believe they were. This learning curve is a PIA. I'll get it though. Thanks for your input. Greatly appreciated!
The inner gears...when I got the set back already pressed in the camplate they spun free as can be. Again I didnt at that time know what to really check or even how to. I assume that when you receive a kit things are supposed to be put together correctly and I believe they were. This learning curve is a PIA. I'll get it though. Thanks for your input. Greatly appreciated!
Seasoned HDF Member
Joined: Nov 2010
Posts: 17,547
Likes: 7,153
From: Oxford, Nc
Everything you received was put together correctly, but S&S / Andrews can't forsee Harleys manufacturing tolerances in your motor in advance.
On my gear set (as I posted before fit perfectly just by pure luck,) both gears had some side to side play when I installed them. I did not measure them however.
On my gear set (as I posted before fit perfectly just by pure luck,) both gears had some side to side play when I installed them. I did not measure them however.
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HDF Community Team
Joined: Jun 2006
Posts: 12,763
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From: san antonio
Can someone please give an overview? If I install cam gears I would check gear backlash? Some gears (such as car differentials) you use shims to adjust gear meshing. But with cam gears you get different size gears?? How do you know what gear needs to be bigger or smaller?
http://www.andrewsproducts.com/sites...07-later_0.pdf
There are undersize and over size gears for the inner and an undersize and oversize pinion gear. If the gears are too tight, replace with an undersize gear; if the gears are too loose, replace with an oversize gear; re-check lash after changing gears.
Before considering running gear drive cams one should check pinion shaft run out and if greater than .004", true the crank or run chain drive cams.
Road Captain
Joined: Aug 2015
Posts: 578
Likes: 522
From: Durango CO
Thanks djl. That link to the Andrews PDF explains everything.
I misunderstood what everyone was saying about the inner and outer gears. I thought they were talking about the drive gear vs. driven gear.
These are extremely tight tolerances. It's impossible to check this visually.
I misunderstood what everyone was saying about the inner and outer gears. I thought they were talking about the drive gear vs. driven gear.
These are extremely tight tolerances. It's impossible to check this visually.