Makes me also wonder about the fork internals. You replaced the oil, did you inspect the internals while you had them off the bike?
Fork Leg Spacing
- Thread starter 243jimb
- Start date
Help Support Triumph Motorcycle Forum:
I not only inspected the internals, I replaced the bushings and seals. I've gone through everything that I could imagine would cause this and still no luck. I checked the frame using levels and string and it is near as I can see OK.
Sometimes adding pictures helps look at and understand the issue. Just a thought for later.
How are the tires and rim? If you haven’t I’d check to see how true it is and verify the wheel is balanced.
The rim was probably the first thing that I checked.
Nothing out of place, spokes all tight and so on I take it. Did you take it someplace where they could spin it at speed?
Maybe we need to understand the wobble issue better. When does it start and is it bad enough to start a tank slapper? Does the bike head shake or does the bike wander over the road without steering input? We can keep shooting in the dark but more information on what you are experiencing on the road would be helpful.
What happens is that above 100kmh/65mph, when I corner, the front begins to shake. If I roll off the throttle it will immediately correct itself. If I'm going in a straight line I can take my hands off the handlebar at any speed and there is no problem except above 195kmh where it will shake. Not that I would ever go that fast officer. Below that speed it will corner OK but not above.
OK, that tells me the bike is running fine when there is no pressure on the front forks. The torque on the forks increases during cornering as the gyroscopic forces are countering the wheel movement. Sounds like you need a fork brace so the forces are equalized on both fork legs. You might also consider a steering damper. But first I'd try the fork brace and see how it runs through corners.
Well that certain took the discussion to another level. Great to clarify the conditions when the wobble occurs. Considering the age of the motorcycle, and the speeds at which the wobble occurs I’d be inclined to go with atomsplitter’s recommendation. Buy a fork brace and be done with it. The speeds are relatively high and the motorcycle is over twenty years old. It’s bound to have taken a fair amount of hard riding in those years and things do loosen up. The underlying issue is age in my opinion. You could probably replace the whole front end fork system for a couple of thousand and cure the problem, but a $200 fork brace seems more economical. Just my thought.
You make a good point.
