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Broken swing arm

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Old Jul 3, 2010 | 06:23 AM
  #61  
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Originally Posted by grbrown
Bob, There are hundreds of thousands of these around out there. I don't believe many of them have actually failed and most that have are due to using lowering blocks. It is not a great design I grant you, which is why I fitted a 2007 swingarm to my old bike!
Graham, this is the first time I have got to disagree with you. When I designed my bushings in the 80's we did it for the FXR's to tighten up the rear fork. Same basic fork but we started noticing the same problem in both the baggers and FXR's. We came up with a billet slide in piece that fits into the swingarm to distribute the load over a wider area. I also made a "Mushroom" looking rear axle spacer on the pulley side (my rear billet brake caliper mount had its own large spacer already).

I am currently running the same design on my FXR but due to the availability of the cheap new style rear fork I put one on my Bagger when I purchased the bike from the Police department with the broken swingarm.

These units were breaking long before this lowering craze started.

BTW you guys recommending other companies products who do not support this site, do not pay the large bills to allow you to post for "free". My pricing has never been higher than any of the others and my build quality is the highest. Think about that before you post. I pay part of the overhead and it is not cheap. All members can post for free but nothing in life is for free.
 
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Old Jul 3, 2010 | 07:18 AM
  #62  
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Originally Posted by FastHarley
Graham, this is the first time I have got to disagree with you. When I designed my bushings in the 80's we did it for the FXR's to tighten up the rear fork. Same basic fork but we started noticing the same problem in both the baggers and FXR's. We came up with a billet slide in piece that fits into the swingarm to distribute the load over a wider area. I also made a "Mushroom" looking rear axle spacer on the pulley side (my rear billet brake caliper mount had its own large spacer already).

I am currently running the same design on my FXR but due to the availability of the cheap new style rear fork I put one on my Bagger when I purchased the bike from the Police department with the broken swingarm.

These units were breaking long before this lowering craze started.
Howard,

I bow to greater experience!
 
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Old Jul 3, 2010 | 12:43 PM
  #63  
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Originally Posted by FastHarley
BTW you guys recommending other companies products who do not support this site, do not pay the large bills to allow you to post for "free". My pricing has never been higher than any of the others and my build quality is the highest. Think about that before you post. I pay part of the overhead and it is not cheap. All members can post for free but nothing in life is for free.
Howard: If you have a product similar to the axle adjuster's and spacer recommended earlier; it would be great if you posted a link to it and pics of it. If it's what we need I'll reference it in the future.

If you're referring to the swingarm bushing's it would be great for you to help out by telling us why we should buy it over the other similar products available.

We all appreciate the sponsors here. I recommend them whenever I can but I do consider other things like quality, warranty, cost, etc. when recommending a product. We are just regular guys with a passion for HD's. We appreciate any help you and all the sponsors can give when trying to decide on the best product or course of action. Thanks much!
 
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Old Jul 3, 2010 | 05:18 PM
  #64  
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Howard re. the swing arm bushings, are the ones you offer a Sta Bo product? Thought they are so please correct me if I'm wrong.
 
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Old Jul 3, 2010 | 07:29 PM
  #65  
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Originally Posted by johnnyQ
Howard re. the swing arm bushings, are the ones you offer a Sta Bo product? Thought they are so please correct me if I'm wrong.
Where would you ever get that idea? They are a straight Delrin
 
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Old Jul 4, 2010 | 08:48 PM
  #66  
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I'm going to make up some adjusters form SS bar stock that will extend far into the swing arm as needed/possible.
This way it will reinforce the swing from inside, and prevent the tube squeeze if somebody goes gorilla on the axel nut.
If the inside dimensions won't allow off the shelf stock, I'll buy some oversize stock and mill it down to a close tolerance, bore out the axel hole, and then drill and tap the ends to accept threaded adjuster stems (made from some grade bolt stems) that I'll use red Locktite on.
I may even make up some trick adjuster nuts.
I'm thinking that this, with Sta Bo bushings and a Progressive link should be an economical way to get what appears to be the needed preventative measures for my '99 RKC's swing arm.
 
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Old Jul 4, 2010 | 09:51 PM
  #67  
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Originally Posted by flyer91
I'm going to make up some adjusters form SS bar stock that will extend far into the swing arm as needed/possible.
This way it will reinforce the swing from inside, and prevent the tube squeeze if somebody goes gorilla on the axel nut.
If the inside dimensions won't allow off the shelf stock, I'll buy some oversize stock and mill it down to a close tolerance, bore out the axel hole, and then drill and tap the ends to accept threaded adjuster stems (made from some grade bolt stems) that I'll use red Locktite on.
I may even make up some trick adjuster nuts.
I'm thinking that this, with Sta Bo bushings and a Progressive link should be an economical way to get what appears to be the needed preventative measures for my '99 RKC's swing arm.
Sounds like a good plan to upgrade your existing swingarm. Must be nice to have access to a machine shop!!
 
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Old Jul 5, 2010 | 12:35 AM
  #68  
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Yeah ... in the late '90's I got a good deal on a Grizzly gear head mill with a 6" vise and rotary base.
Some of the best "tool money" I ever spent.
It's paid for itself many times over, and the convenience of having it (no waiting for a local shop to get around to my small projects) has been pretty good icing on that cake as well!!
I paid less than a grand for it (and a bunch of tooling) at auction from a small semi-conductor business that closed it's door during the "downsizing" moves of those times.
 

Last edited by flyer91; Jul 5, 2010 at 12:39 AM.
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Old Jul 6, 2010 | 10:50 AM
  #69  
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Originally Posted by FastHarley
Where would you ever get that idea? They are a straight Delrin

Based on their web site the Sta Bo product also uses or used Delrin material, allows Dealers to sell/market them, and has a patent pending so thought maybe you are a dealer or distributor of their product.
 
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Old Jul 6, 2010 | 12:15 PM
  #70  
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Originally Posted by johnnyQ
Based on their web site the Sta Bo product also uses or used Delrin material, allows Dealers to sell/market them, and has a patent pending so thought maybe you are a dealer or distributor of their product.
That is possible, but Howard does do a lot of original stuff. Delrin is the name of the white material used. Patent pending means nothing until it is granted, if ever. When it is, anyone copying the original design will have to stop. Or at least that is the theory!
 

Last edited by grbrown; Jul 6, 2010 at 12:16 PM. Reason: Expanded.
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