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January 1st, 2006, 07:40 AM   #1
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Fork Location?

What lines should you run the forks on for the newer Bergs?
What line do you run the 1st or the 2nd?
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January 1st, 2006, 01:22 PM   #2
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Re: Fork Location?

Hi mark550fc I run my 04 fe450 forks flush with tripple clamp there is a diffirence betwen 01/02 and 03/04/05/ My 01 fe400 I ran at the first mark
but there is other factors in selecting where to run the fork assume that
you have a handling issue
Happy new year
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January 1st, 2006, 04:06 PM   #3
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Re: Fork Location?

She shakes her head at times and it is a little scarry!
I have changed the rear spring from a 80/250 to a 76/95/250 to a 84/250 and my next move will be a 8.8/258 that I had made 8mm longer than stock and the hope is that it will place a little more weight on the front.
My sag was about 33-38 and the other number was 105-112 with the said springs. And I did not see much change from each spring so it must need to be revalved for a 205 lb rider I am thinking?
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January 1st, 2006, 05:55 PM   #4
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Re: Fork Location?

My SM has a 84-250 rear spring, clickers in the middle, forks to first line, 100 mm of sag and 20 mm unladen.... I'm 250 with gear and I've have had her up 80 mph....on rails, no shake.....I'm still learning but I did find the less sag the more weight on the front....I also tried less rebound and compression up front but didn't work as well as the rear sag adjustment....
I'm far from an expert but seems to me you have too much laden/unladen sag....makes the front end light, too much bias towards the rear.......??? just a thought..
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January 2nd, 2006, 02:09 AM   #5
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Re: Fork Location?

check the swing arm pivot pin and the headrace bearings. also the comp and rebound on the forks, you shouldn't be getting headshake mate.

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January 2nd, 2006, 06:29 AM   #6
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Re: Fork Location?

Originally Posted by mark550fc
She shakes her head at times and it is a little scarry!
I have changed the rear spring from a 80/250 to a 76/95/250 to a 84/250 and my next move will be a 8.8/258 that I had made 8mm longer than stock and the hope is that it will place a little more weight on the front.
My sag was about 33-38 and the other number was 105-112 with the said springs. And I did not see much change from each spring so it must need to be revalved for a 205 lb rider I am thinking?
Thanks.
To answer your first question I run my forks on my 04 at the first line under the fork cap.

Kind of seems like you're bouncing ( no pun intended) around with your spring choices. I see that you are going from a straight rate 8KG 250, to a rising rate 7.6KG-9.5KG 250, to a straight rate 8.8KG 258. Your free sag is in the ball park, but keep in mind that the "optimum" set up for a rear spring is between 4-6mm of preload on the spring itself. And I don't understand why, I'm assuming here, that you put an 8mm spacer on the 8.8 when you haven't tried it yet at it's standard length of 250, this is a huge change that I'm betting will result in really poor handling, as it will dramatically shift weight forward thus compounding your problems.

Since you haven't mentioned the fork springs I'm assuming you haven't chaged them, and if that's so this is the most likely cause of your problem. Your forks are probably hanging down too far in their travel, you have to match the front end with the rear. You say your bike is shaking it's head, and then you talk about putting more weight on the front, I really don't think this is the direction that you need to headed. If running all those different rear springs at varying amounts of sag made no difference in head shake then your front springs are definitely too soft. With 112mm of rear sag and the fork height set where I set mine your front end shouldn't be wagging very much at all.

If you weigh 205lbs in your birthday suit, then you are going to be close to 218 or 220 with your gear (10lbs just for your boots) on sans a fanny pack and drink system. If you referrence the owners manual you'll see that you should have .47 or .48 springs, as .46 are standard for a FC.

Standard set up for a stock 2005 FC 550 at your weight should be .47 or .48 kg front springs preloaded to 10mm with precision spacers, an 8.4/250 spring set at a static sag of 33 to 37 mm should produce a race or rider sag of 90 to 100mm. This is all taken from the 2005 owners manual pages 30 & 31.

I would reccomend that you take your susupension to a top notch suspension tuner who is familiar with the PDS system and have it sprung and valved for your weight, ability, and type of riding you do. IMHO you do not need to buy any special valves or other gizmo's for your shock or forks, you just need someone who know's what the heck they're doing and your stock components will be just fine, if someone insists that you need their valves blah blah blah, do some more research. Talk with these guys on the phone for a while, your spending big bucks to get your suspenders right, if they don't want to take the time of day with you, move onto the next one. Also, have your bullshit filter set on extra high when talking to these people. I spent about $650.00 getting my suspension set up for me and it was worth every penny, if you'd like I can set you up with the guy who did mine, he is no bs, and that means you have to be no bs, he knows bs when he hears it. He has been in the business for 30 years and has truly helped all that have come his way.

Hope this helps,
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January 2nd, 2006, 06:57 AM   #7
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Re: Fork Location?

The 05 fc has 4.6 on the front and I had it revalved for a 200 lb rider and all new Moto Pro valves installed. The springs might need a preload spacer to bring it up a little to match as they do hang a little.
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January 2nd, 2006, 07:09 AM   #8
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Re: Fork Location?

mark

it's not a case of sussies blah blah. line on forks blah blah.

you need to frop the forks through the yokes and get them flush with the top to give yourself a chance.

thing to remember is that within a year these bikes are letting in water to the SAPP area and the headraces must be greased and adjusted. your service intervals are now entering your area-don't bypass them.

go and check the two items i mentioned. the other to check is rear wheel alignment. i do this with no tyre on the rear and the wheel alone back in. bit of string against the rear rims along to the front wheel. you'd be amazed at how many rear wheels got adjusted the wrong way one day!

jesus! half the owners can't even adjust a chain correctly!

anyway, you'll get there!

regards

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January 2nd, 2006, 07:38 AM   #9
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Re: Fork Location?

Originally Posted by mark550fc
The 05 fc has 4.6 on the front and I had it revalved for a 200 lb rider and all new Moto Pro valves installed. The springs might need a preload spacer to bring it up a little to match as they do hang a little.
spacers are not going to compensate for a too soft a spring, .46's are for someone weighing 176 pounds. KG=2.2lbs.
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January 2nd, 2006, 08:15 AM   #10
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Re: Fork Location?

dale

i weigh 205 as well and i have .46s on the front. i have 10mm of preload to make the sag come good.

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