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08-15-2008, 12:51 PM
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#1 |
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Registered Member
Join Date: Aug 2008
Posts: 1
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FLH Wobble
Restored a 66FLH and now experience a wobble at about 50 mph. Bike was completely rebuilt, swingarm bushings, seals, front forks, new Avon tires. Everything set to specs as original manual. Bike has the original Star front hub which was rebuilt. Wheels machined balanced.
Rims within tolerances for radial and lateral runout. Front/rear wheel in alignment. I miss something? Any help is appreciated. |
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08-15-2008, 01:01 PM
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#2 | |
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Founding Member
 
Join Date: Nov 2001
Posts: 10,137
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Quote:
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08-15-2008, 01:11 PM
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#3 |
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Super Duper Mod Man
  
Join Date: Nov 2001
Location: Anywhere they let me
Posts: 10,484
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I had an 82 that wobbled at 45. At 40 it was gone and at 50 it was gone. I tried everything to get rid of it, but it was still there. My suggestion is don't ride at 50 and you won't notice it.
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08-15-2008, 01:27 PM
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#4 |
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Aging Cafe` Racer
Join Date: Jun 2007
Location: Sittin' down by my window, lookin' at the rain.
Posts: 8,132
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Did you put a Batwing or windshield on there? I had to be careful with my '80 FLHP to get the fairing as even as I could when I put it on or it would get a wobble, also some tires tend to hunt on some road surfaces, that could get it going too. Over or under inflation can do it.....even a loose dry or worn primary or rear chain can get some weird handling quirks. Hard to say..
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08-18-2008, 10:17 AM
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#5 |
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Founding Member
Join Date: Nov 2001
Location: Baja 'Bama
Posts: 3,478
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Check the head bearing torque, too. Too much is bad, too little is bad.
I'm assuming you mean 'wobble' as in, the handlebars move try to move in your hands, as opposed to 'weave', where the bike wnats to wander back and forth.
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08-18-2008, 12:19 PM
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#6 |
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Founding Member
Join Date: Nov 2001
Posts: 731
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Steering head bearing?
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08-18-2008, 01:04 PM
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#7 | |
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Founding Member
Join Date: Nov 2001
Location: Baja 'Bama
Posts: 3,478
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Quote:
No, the cylinder head bearing. Actually, there are two. One for each head. They turn the piston at the top of its stroke, and direct it back down the cylinder. If the bearing is improperly torqued, the piston can move form side-to-side, causing the bike to wobble. No, not really. I was indeed referring to the steering head. The fork trees are mounted to the steering stem. It is supported at the top and bottom by two bearings. The type of bearings used vary by the Manufacturer, but all of them have a very specific 'preload' to keep the front end of the bike under control. I apologize for the smart-aleck response. That's usually Ken's contribution.
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You would not understand, this is not how I am... I have become - Comfortably Numb. |
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08-19-2008, 05:33 AM
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#8 |
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Founding Member
Join Date: Nov 2001
Posts: 731
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Ha! i wasnt responding to you...i had missed your post. i was suggesting to the original poster that he may want to check the steering head bearings. As a vintage dirt bike guy, i'm purty familiar with steering head bearings
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