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Main Area => General GS500 Discussion => Topic started by: Pelikan on March 16, 2011, 06:33:02 PM

Title: Bent Fork?
Post by: Pelikan on March 16, 2011, 06:33:02 PM
Mmm-kay.  I'm in super OCD mode today.  When I bought the bike, it had some very minor scrapes and a goobered up brake lever, indicating that it may have been down (although the previous owner mentioned it had never been dropped).  If it had been dropped, I know there's a chance the forks could have been bent (although after the miles I've put on it, I would have probably noticed it by now).

Anyway, I looked around the net for all those shade-tree diagnosis methods.  While driving, it seems like the bars/front end are arrow straight/perpendicular to the gas tank.  At low speed, when I let my hands off the bars, it seems to want to pull to the left.  However, at a dead stop I took my hands off the bars and feet off the ground to see which way it wanted to lean, and even on an incline that goes down to the right, the bike still wanted to lean left...so I'm thinking it might be the thing's balance, or my own left bias.

At higher and freeway speeds it still tracks straight, and if I let off the bars and focus at a "target" straight ahead the bike seems to go right there without any pulling...

...someone tell me I'm just in a weird mood, and have nothing to worry about.
Title: Re: Bent Fork?
Post by: 4strings on March 16, 2011, 06:49:51 PM
You may want to check the alignment of your rear wheel.  Pulling to one side when no-handing seems to be the usual symptom.  Object fixation keeps you going strait while moving and riding normally and I think the bike wanting to go right at a full stop is subject to many more things (like your balance) rather than fork straitness.
Title: Re: Bent Fork?
Post by: the mole on March 17, 2011, 01:24:34 AM
Jack the front of the bike so the wheel is off the ground, then loosen the top and bottom triple clamps on one side. Now try and spin that leg around in the clamps. If its bent enough to worry about it'll be obvious. If its OK, try the other side.
My guess is you're in a weird mood, and have nothing to worry about.
Title: Re: Bent Fork?
Post by: adidasguy on March 18, 2011, 01:17:01 PM
It is a mater of biological ergonometric political correctly greened carbon neutral proactiveness of your left leg. Possibly you drove a stick shift car with a tight clutch or you're a right handed bowler (where you slide and end on your left leg). Or some other reason.

What has happened is your left leg is larger and more massive than your right leg. This results in a natural lean to the left of the bike due to the added weight of the left leg. Combine that with the added wind resistance of the larger left leg, you'll tend to go left at low speeds (The coriolis effect negates that at high speeds)

When you stop, you're added mass of the left leg has also resulted in a lengthening of it and a natural tendency to lean your body to the right as a compensation. This makes it seem as if the bike is leaning to the left, where the bike is actually straight up and you are leaning to the right.

Through years of this, you don't notice it. Perhaps now you are seeing side effects of the multitude of drugs now available over the counter in prescription strength without a prescription whose side effects are making you unconsciously aware of this phenomenon.

I hope this explains your situation.
:bs:
Title: Re: Bent Fork?
Post by: the mole on March 18, 2011, 01:45:37 PM
Adidas, can I have some of what you've been smoking?  :cookoo: :icon_eek: :woohoo:
Title: Re: Bent Fork?
Post by: JAY W on March 18, 2011, 03:55:18 PM
If you had a bent fork tube,oil seal would leak,pull to one side bad when braking.Ignore alignment marks on swinging arm either get a laser chain alignment tool,or measure from spindle to swinging arm bolt.