A Couple Of Fork Questions - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 4 (permalink) Old 04-25-2009, 12:13 AM Thread Starter
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A Couple Of Forking Questions

OK after searching the site for 30+ minutes I gave up, so forgive me if theres already a post concerning these questions that I am about to ask.

1. What is the outside diameter measurement of our stock forks tubes?

2. What is the stock length of our forks tubes?

I am asking these questions in prepping and researching to do some more mods.
As I am sure a few of you have already guessed, I am looking into replacing my fork tubes with longer ones. I want to give it a bit more rake without having to mess with the trees or neck and tubes are cheap. So feel free to hit me with some answers people, thanks.

Peace

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Last edited by wkrizan; 04-25-2009 at 12:22 AM.
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post #2 of 4 (permalink) Old 04-25-2009, 03:25 AM
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Quote:
Originally Posted by wkrizan View Post
OK after searching the site for 30+ minutes I gave up, so forgive me if theres already a post concerning these questions that I am about to ask.

1. What is the outside diameter measurement of our stock forks tubes?

2. What is the stock length of our forks tubes?

I am asking these questions in prepping and researching to do some more mods.
As I am sure a few of you have already guessed, I am looking into replacing my fork tubes with longer ones. I want to give it a bit more rake without having to mess with the trees or neck and tubes are cheap. So feel free to hit me with some answers people, thanks.

Peace
Tube diameter = 38.0 mm

Tube and slider extended lenght = 850.0 mm From top of tube to center of axle.

!!!!WARNING!!! Extending your fork lenght will NOT change your "steering head" rake angle, it will remain the same. It will however raise the bikes center of gravity and change the steering geometry which WILL deminish the handeling charastics. MOST IMPORTANTLY it will move the oil to the back of the engine away from the oil pickup, and WILL greatly improve your chances on a lubrication failure.

Our engines have a "WET SUMP" design and need to remain on a horizontal plane for propper lubrication. Some engines are a "DRY SUMP" design and can be mounted at ANY angle with NO ill effects.

I advise againt this modification but it will be your choice.


85 VN700 "Old Yella"

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post #3 of 4 (permalink) Old 04-25-2009, 08:07 PM
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This wet sump design, requiring the vn750 engine to be mounted so as to keep the oilpan level, raises a question for me. How steep an incline can we climb before this becomes a lubrication problem? Or will the laws of physics dump my ^$$ off the back of the bike, before oil pickup ceases?

Gordon

1991 VN 750 -"Cosmic Lady" or "Bad Girl"?
Purchased May 16, 2008
Approx.19,300km (12,000 miles)

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https://www.vn750.com/forum/11-vn750-general-discussion/9127-top-ten-items-you-would-suggest-new-owner-do-his-new-ride.html
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post #4 of 4 (permalink) Old 04-25-2009, 08:15 PM
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well if you have the stock seat, it would have to be a pretty steep incline to dump you since we have a backrest
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