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Offset Steering Head

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Old Dec 12, 2007 | 09:02 PM
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hackney
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Default Offset Steering Head

Harley Touringbikesmaintain an offset steering head. Is it true this design makes the touring bikes much easier to handle at slower speeds? For example, would aStreet Glide be easier to manuever ina parking lotcompared to a Heritage Softail? Thanks.
 
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Old Dec 12, 2007 | 09:15 PM
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Default RE: Offset Steering Head

That's one of the mysteries of the Harley tour bikes. The front rake is 26 degrees, which helps account for their plush ride. With a standard triple tree, however, with the fork tubes in front of the neck, there would be very little trail. By putting the fork tubes behind the neck with reversed triple trees, it increases the trail for stability going down the road.

Having never had one before, I had a heck of a time for the first 5,000 miles trying to turn at slow speed and maintain control. It seems to act like a tricycleturning, needing to be kept more straight up and down until a higher speed, or the front end would come around on me, as compared to bikes with more degrees rake like I was used to. A friend of mine got a Road King at the same time I got our Ultra, and he tipped his over twice in the first week, trying to adapt from his previous Dyna.

Once learned, however, I do now believe it is very easy to handle at slow speeds. For me, it took watching the Ride Like a Pro video to understand how to crank it around at slow speeds.
 
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Old Dec 12, 2007 | 09:17 PM
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Default RE: Offset Steering Head

[:-]What??????
 
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Old Dec 12, 2007 | 09:18 PM
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Default RE: Offset Steering Head

ORIGINAL: hackney

Harley Touringbikesmaintain an offset steering head. Is it true this design makes the touring bikes much easier to handle at slower speeds? For example, would aStreet Glide be easier to manuever ina parking lotcompared to a Heritage Softail? Thanks.
1.Yes

2.Yes

Rake Steering Head/Trail STREET GLIDE =26.0° / 6.20 in.
HERITAGE SOFTAIL = 32° / 5.80 in
 
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Old Dec 12, 2007 | 09:19 PM
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Default RE: Offset Steering Head

ORIGINAL: White Knight 04

[:-]What??????
Yeah, that's what I thought too, until I looked under the fairing and saw the forks behind the steering neck.
 
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Old Dec 12, 2007 | 09:46 PM
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White Knight 04
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Default RE: Offset Steering Head

Boy thanks guys, like they say never to old to learn...Been riding for 50 + years and learned something here tonight....Thanks again....Jer
 
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Old Dec 12, 2007 | 09:56 PM
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Default RE: Offset Steering Head

I am came from my 05 Super Glide to a 07 Roadie about a month ago. The weight of the bike at stops has taken a bit of getting used to, but the nimbleness and ease of the slow speed stearing in the RGhas definately impressed me. I would have to say Yes, IMHO, to both of your questions.
 
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Old Dec 13, 2007 | 06:28 AM
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Default RE: Offset Steering Head


ORIGINAL: hackney

Harley Touring bikes maintain an offset steering head. Is it true this design makes the touring bikes much easier to handle at slower speeds? For example, would a Street Glide be easier to manuever in a parking lot compared to a Heritage Softail? Thanks.
Yes. It's not just the rear offset, it's the ridiculously short rake too. It's nearly in the sport bike range. *thumbs up*

And yes, the whole touring frame line up are crazy easy to ride at low speed. Go try one. It's kind of funny to carve a ~15 foot circle in the parking lot with the floorboard while the salesman looks on that look of shock in his eyes. *grins*
 
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Old Dec 13, 2007 | 06:56 AM
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Default RE: Offset Steering Head

Have ridden both styles and can say only that I really never gave it a thought.Must be no difference.
 
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Old Dec 13, 2007 | 08:28 AM
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Default RE: Offset Steering Head

Just a note to clear up things. The neck is (as stated) on a late model bike 26 degrees. The triple treed are raked 4 ½ degrees. The offset relative to the steering stem, length of fork tubes and diameter of the wheel all have vital roles to determine the handling characteristics.

By increasing or decreasing the offset (as well as he other measurements) the measurement will increase or decrease the trail. Offset is one of the most critical measurements in steering geometry. Setting the forks behind the steering stem with raked triple trees allows for a shorter wheelbase with this large trail. [ul][*]A large trail makes for poor low speed handling but excellent straight line riding on the highway.[*]Handling in the curves as well as parking lot speeds handling suffers but straight line stability is enhanced. This is why an late model FL, along with a heavy front wheel, you can take your hands off the handlebars and go to sleep (well almost).[*]For a easy visual explanation go (here) or you can design your geometry by downloading your own rake and trail calculator (here).[*]For tire sizes and weights go (here). If you change tire sizes you can see what effects you will have on your bike.[*]I like a trail of 4". This trail number is very near the same as the 2001 era Dyna T-Sport, one of the best bikes Harley ever made for overall handling in my oppinion.[/ul]I hope this helps.

[IMG]local://upfiles/29413/674C558837694DEC8505621A44F7CAB7.jpg[/IMG]
 
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