front forks

T

Todds Tap Room

New Member
Working on my 1974 CT70K3 i bought new forks and installed them, after adding 3.8 oz of 10-40 motor oil (witch i dont think it matters) the issue is with the bike on the bench and no front wheel installed there is movement up & down in the in the forks. its like the spring is not long enough ? what am i missing here. I here you can adjust the forks with shims under the tripple clamp?
Thanks,
Todd
 
kirrbby

kirrbby

Well-Known Member
Do you have ALL of the CORRECT parts installed?

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T

Todds Tap Room

New Member
yes all parts are installed, thanks. i think i need to install the front wheel and move the suspension up and down a few times to get the oil circulated.
 
kirrbby

kirrbby

Well-Known Member
Since the k3s have the gators over the springs, you probably COULD put some preload spacers in there. I don't remember anyone doing that before, or what you might use for spacers tho.
But if I had slop in a K3 front end, I would be looking to see what's missing...or what's wrong. I don't think there should be slop in there.
If you don't have the correct K2up headlight ears...that could be the problem..?
Missing trim rings...
Missing spring bushings...
 
T

Todds Tap Room

New Member
kirrbby said:
Since the k3s have the gators over the springs, you probably COULD put some preload spacers in there. I don't remember anyone doing that before, or what you might use for spacers tho.
But if I had slop in a K3 front end, I would be looking to see what's missing...or what's wrong. I don't think there should be slop in there.
If you don't have the correct K2up headlight ears...that could be the problem..?
Missing trim rings...
Missing spring bushings...
Click to expand...
the forks came from TB, through Socalminitrial, they were "Dry" when i installed them and had lot of free play, i added 2.0oz oil as i saw in a youtube video and the freeplay was down to 1 1/2 inch then added another .8zo of oil and it better. wonder if i need to add a little more oil?
thanks for your help
 
kirrbby

kirrbby

Well-Known Member
Tb says to use 3.5 oz each.
The 80s and 90s CT70 legs have internal springs...they use only 2oz of oil.
By your post...you only have 2.8oz in yours right now.
 
T

Todds Tap Room

New Member
well i took new forks back off and matched them up with the old ones and the springs are 1 inch lower. ( thanks socalminitrail)
thanks for you help as well. note Socal got the forks from TB i think.
 
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