Tip for measuring fork oil height

All the work you do in the workshop. Maintenance, repair, troubleshooting, customizing, etc.
User avatar
Jimbo
XJ Enthusiast
XJ Enthusiast
Posts: 523
Joined: Thu Jan 05, 2012 7:24 am
Region or State: IL
Motorcycles Owned Currently: 1994 Yamaha Seca II
Location: Illinois

Re: Tip for measuring fork oil height

Post by Jimbo » Sat Jun 10, 2017 7:17 pm

Depends on how much you overfill. Slight amounts, like less than 1 oz may be hardly perceptable. If you add more than ithat, I would think it will start to get stiff rather quickly. Remember as you put in more fluid, you decrease the amount of air in the fork tube which acts as a spring too. Air is compressible, fluids are not.
.

User avatar
Hadaveha
One of the Regulars
One of the Regulars
Posts: 118
Joined: Sun Apr 19, 2015 2:08 pm
Region or State: Alabama
Motorcycles Owned Currently: 1992 xj600 s. 1984 Honda vt500c

Re: Tip for measuring fork oil height

Post by Hadaveha » Sun Jun 11, 2017 5:51 pm

My chiton doesn't tell me a proper amount of fork oil is their a suggested amount of mil's.

User avatar
Hadaveha
One of the Regulars
One of the Regulars
Posts: 118
Joined: Sun Apr 19, 2015 2:08 pm
Region or State: Alabama
Motorcycles Owned Currently: 1992 xj600 s. 1984 Honda vt500c

Re: Tip for measuring fork oil height

Post by Hadaveha » Sun Jun 11, 2017 5:52 pm

chilton I ment sorry

User avatar
Jimbo
XJ Enthusiast
XJ Enthusiast
Posts: 523
Joined: Thu Jan 05, 2012 7:24 am
Region or State: IL
Motorcycles Owned Currently: 1994 Yamaha Seca II
Location: Illinois

Re: Tip for measuring fork oil height

Post by Jimbo » Mon Jun 12, 2017 6:21 am

Each fork leg holds 12.8 OZ. or 881 ml. I would suggest 15W fork oil to start as an improvement over stock 10W.

User avatar
Casper
Forum Moderator
Forum Moderator
Posts: 2306
Joined: Sun Feb 26, 2012 2:16 am
Region or State: Motor City (MI)
Motorcycles Owned Currently: 1994 XJ600, 2006 SV650

Re: Tip for measuring fork oil height

Post by Casper » Mon Jun 12, 2017 7:50 am

The excess air pressure due to lower volume being compressed the same amount will blow the fork seals even sooner than normal.

That said, some people pressurize the air inside the forks using a schrader valve. As long as you haven't overfilled to where there isn't any expansion area, you might get away with it without issues.
ImageImageImage

User avatar
Hadaveha
One of the Regulars
One of the Regulars
Posts: 118
Joined: Sun Apr 19, 2015 2:08 pm
Region or State: Alabama
Motorcycles Owned Currently: 1992 xj600 s. 1984 Honda vt500c

Re: Tip for measuring fork oil height

Post by Hadaveha » Mon Jun 12, 2017 10:09 am

Thankyou guys I used 20wt when I changed the fork oil. And I really think I have it overfilled. It's feels like bicycle forks. Lol.

User avatar
Casper
Forum Moderator
Forum Moderator
Posts: 2306
Joined: Sun Feb 26, 2012 2:16 am
Region or State: Motor City (MI)
Motorcycles Owned Currently: 1994 XJ600, 2006 SV650

Re: Tip for measuring fork oil height

Post by Casper » Mon Jun 12, 2017 1:53 pm

Excessive damping/rebound caused by too thick of fluid, would make it feel like a non-suspended fork as well.

There isn't an issue about popping the forks open again and measuring the fluid height.
ImageImageImage

Post Reply

Who is online

Users browsing this forum: No registered users