Subject: RE: Fork problem
Author: Keith Ruff
Date: Mar 13, 2005, 5:45 AM
Post ID: 1718536533
Kevin,
I had the same problem with the 71 Ambo I used to own. I had some PVC
spacers added to stiffen things up and ran 30W oil. Every time I hit a
bump, the tank would bang when the forks rebounded to their stops.
Going against what would theoretically make no sense, I drained the 30W
oil out and replaced it with 7W oil. Banging was gone! Can't explain
it as you would think lower weight oil would cause a harder rebound, but
it did the opposite. I guess it allowed for more initial dive whereas
the 30W oil resisted the initial dive and rebounded harder. It's worth
a try, drain out the 30W oil and add 6oz of 7W fork oil to each side and
see what happens.
Good Luck.
Keith Ruff
70 Cafe Racer Ambo
Manahawkin, NJ
Kevin Lawhorn wrote:
I have a slight problem with my forks on my V7. I have asked some people about it and all I got were vague answers. The problem is as follows: When I go over railroad tracks, hit a small pothole or something that causes the forks to operate in a severe fashion, the forks compress as they should, and then return to their extended position and hit their stops very hard. It's as if they don't have any oil in them, but they do. I've put ATF in, then 20W50, then 30W fork oil and lastly 60W racing oil. Nothing. Still does it. What the heck is going on? The seals don't seem to be leaking. The bike only has 20,000 miles on it. 3000 put on by me in the past year. If it is something simple I'd like to know. I don't feel like dropping a wad of cash on something simple. Sorry about spelling aluminum wrong. I flunked a lot of english and math in school. Kevin Lawhorn 1969 Moto Guzzi V7 1965 Honda CB160 1971 Honda CB750 1976 Suzuki GT500 http://www.chivinmoto.com Chicago Vintage Motorcyclists |