Help with Forks 1984 GS250

[Graham]

Have a 1984 GS 250 with normal Marzocchi forks,  one side only has a dampening rod, and find the forks feel like they want to twist under hard braking,or even light braking on steep down hills, it corners fine but its hard to feel confidant in the front end, any ideas,     

 PS:   do have  another set of forks, what if I put the damping rod from that one into the forks so I have 2 rods would that work
or have I put the dampening rod into the wrong fork, is that poss
 

[ba-02-xr]

One side is compresion the outher is repound. Thats all I know.

[Graham]

So does one side run less oil than the other or is there a difference in springs

[cyclegod]

"When all else fails read the instructions" It may be time to look for a manual and/or a mechanic familiar with this models fork setup.

[Graham]

DAA,  Thats why I put the post up, thanks for your help

[ba-02-xr]

You can put differant weight oil in each leg to change compresion & rebound damp seperatly.

[Husabergpete]

Greame,

           Correct you are.

This forum is to help those who will help others. Or it should be. The KTM manuals I have been using (originals copied from Austrian into English) leave a good deal to be interpreted. Just one of those 80's things. It has only been through the one on one help from the Heaven KTM guys that my KTM project has come together as well has it has.

SO - don't be afraid to ask the silly type questions. Got me riding quicker.

Pete

[oz555ktm]

G'Day Graham

I do not think that KTM did that to the 1984 front forks. it was much later .

is the Bike a 1984
are that twin lead drum brakes?
are thay 41.7mm tube???
has some one fitted later forks???

[Graham]

Hi Dennis, the bike is a 84 model and forks are 42mm, has disk front, twin shoe rear,
Its the problem with the forks, not shocks ( its single WP shock rear )

Ps have the 125 stuff put aside will bring it to CD6 for you

Graham

[oz555ktm]

Look I lost your Phone Number

send me a E-Mail or call me and I will help with the Forks ....

    Do you still have the KTM 250 For Sale Still

[KTM495]

It seems this is an 85 model with 86seatcover and 89plus front wheel. Not sure about your fork, can't see it clearly enough in the pic.
But seems to be the stock 85 fork. 86 was black with rebound adjuster attached to the right slider, 87 was the superb brown-gold colored one with compression damping adjustment at the bottom of the left slider.

However, this is strange, because the 42 in 85 had two equal damping rods. The 86 had still two damping rods, but oil circuitry was different, so left was compression control and right the rebound damping rod with external adjustment.
In 87 they had a cartridge in the right leg for rebound and still a damping rod in the left leg with compression adjustment at the bottom.

Can you post better pictures ot the fork? Do you have a sleeve where the dust and oil seal is intalled in it?

[E74]

It seems this is an 85 model with 86seatcover and 89plus front wheel. Not sure about your fork, can't see it clearly enough in the pic.
But seems to be the stock 85 fork. 86 was black with rebound adjuster attached to the right slider, 87 was the superb brown-gold colored one with compression damping adjustment at the bottom of the left slider.

However, this is strange, because the 42 in 85 had two equal damping rods. The 86 had still two damping rods, but oil circuitry was different, so left was compression control and right the rebound damping rod with external adjustment.
In 87 they had a cartridge in the right leg for rebound and still a damping rod in the left leg with compression adjustment at the bottom.

Can you post better pictures ot the fork? Do you have a sleeve where the dust and oil seal is intalled in it?

FFark, to much for me to take in at once but it sure ain't an 84 model, looks 85 to me..

[Big John]

Heres a photo of my old 84 250gs (no head light & wrong back gaurd).One of many bikes I should of kept.
It had TLS drum brakes a different swing arm, tank seat radiator shrouds to yours.