Problems with attachments solved: viewtopic.php?f=7&t=17433

'55 Front end bounce

Information on forks/springers/shocks
Post Reply
1955fle
Posts: 173
Joined: Mon Feb 26, 2007 10:50 pm
Bikes: 1955 FL
1973 FLH
Location: Mass

'55 Front end bounce

#1

Post by 1955fle » Mon Jun 01, 2009 8:23 pm

Went to a vintage show yesterday and was heading down the highway at about 60mph. Over every bridge joint the front end of the bike had a terrible bounce. Had a tough time even holding on to the grips. Much worse that it has ever been. I haven't checked the forks lately. Where should I start. It is possibly the forks needing to be rebuilt or the neck bearings. Thoughts please.

-Carl



51Hog
Posts: 664
Joined: Fri May 20, 2005 7:29 pm
Bikes: 1951 Fl
Location: Wasilla, Alaska

Re: '55 Front end bounce

#2

Post by 51Hog » Wed Jun 03, 2009 12:30 am

Do they have water in them? Bad seals let water in.
Do they have oil?
I would drain them and fill with the proper amount of oil to start.
Dale

1955fle
Posts: 173
Joined: Mon Feb 26, 2007 10:50 pm
Bikes: 1955 FL
1973 FLH
Location: Mass

Re: '55 Front end bounce

#3

Post by 1955fle » Wed Jun 03, 2009 5:11 pm

Thanks Dale. that was my first thought also. I have been reading a thread about poor fork rebonding and moving to 30 wt fork oil. I am going to drain the forks and use the 30 wt and see what happens. I will let you know.

51Hog
Posts: 664
Joined: Fri May 20, 2005 7:29 pm
Bikes: 1951 Fl
Location: Wasilla, Alaska

Re: '55 Front end bounce

#4

Post by 51Hog » Wed Jun 03, 2009 5:18 pm

If your forks are not bottoming out, and if they are not topping out, heavier oil will only make them stiffer when hitting bumps. I am going to try a little lighter weight oil now that my forks are working properly with 30 wt. They are stiff now.
Dale

Pomike
Posts: 243
Joined: Thu Jul 03, 2008 5:54 pm

Re: '55 Front end bounce

#5

Post by Pomike » Wed Jun 03, 2009 5:26 pm

I tried all of the shortcuts to good forking, and I can tell you from experience, that they don't work. If it doesn't handle right, fix it right. Mine took a total rebuild, except for bushings. New springs, complete damper units, and 30 wt. fork oil. You also want to check your wheel balance, and spoke tightness. Sometimes a bad rear setup such as loose spokes, can cause a lot of different problems. It kind of sounds like you just assumed because it worked last season, it would work now. I found that absolutely is not the way things go. I don't think neck problems would cause your symptoms, but just use your manual to check them. Good luck, and ride safe!
Mike

panhead
Site Admin
Posts: 2513
Joined: Wed Dec 12, 2001 9:17 pm
Bikes: 1954 FL
Location: Holland

Re: '55 Front end bounce

#6

Post by panhead » Wed Jun 03, 2009 7:26 pm

Here is another fork topic: viewtopic.php?f=60&t=426

Post Reply

Return to “Forks/Shocks”