front fork oil change

[hairless biker]

  Hi wondering what oil to put in the front forks when i,ve pulled them down cleaned all the crap out of them and have them ready to rebuild.
I,ve heard different ideas for grade,s of oil  but what would be the best grade of oil to use. I ask this more to the fact that i understand the standard oil grade is`nt  quit good enough  thanks Hairless 

[conordylan1]

mix 50% 10w to 50% 15w to make a 12.5w. ive found that to be the best combination yet. been running that in my 89 3cv for a year now and it hasent bottomed out once on bumpy irish roads. 

[hairless biker]

mix 50% 10w to 50% 15w to make a 12.5w. ive found that to be the best combination yet. been running that in my 89 3cv for a year now and it hasent bottomed out once on bumpy irish roads. 

where in ireland are you i,m border country north, I had a wonderful tour in scotland 2 week,s ago, brilliant but found font of bike bottomed on a couple of hard bumps. I havn,t changed oil in forks from i got her over a year ago but i,m well pleased with her find that she,s fit for anything

[Mark Olson]

as strange as it sounds , you can put 10wt in one fork and 15w in the other for the same effect of 12.5wt.

[conordylan1]

mix 50% 10w to 50% 15w to make a 12.5w. ive found that to be the best combination yet. been running that in my 89 3cv for a year now and it hasent bottomed out once on bumpy irish roads. 

where in ireland are you i,m border country north, I had a wonderful tour in scotland 2 week,s ago, brilliant but found font of bike bottomed on a couple of hard bumps. I havn,t changed oil in forks from i got her over a year ago but i,m well pleased with her find that she,s fit for anything

good to hear from you, tought i was the only one about, im from just outside clones co. monaghan. will have to meet for a blast.

[Arnie]

as strange as it sounds , you can put 10wt in one fork and 15w in the other for the same effect of 12.5wt.

A few years ago Marzocci made a fork that had all the damping in one fork leg, and the spring in the other.   As long as the axle is strong enough to keep them moving together it all provides the same net result.

Cheers,
Arnie

[andyb]

Current yamaha forks have compression in one and rebound in the other.

Seems like when a seal breaks or something gets loose, it'd get strange to a much worse degree than conventional forks, but works well enough when it's all in good shape.

[Dan Filetti]

If the forks are different, compression in one and rebound in the other, or different weight oils in one another, wouldn't you need to ensure that the triple trees are stiff enough to prevent twisting?

Would this then indicate the need for a super-brace?

Just wondering.

Not that this is relevant but mt 8 year old daughter wanted me to put this here:



Dan

[andyb]

Yup.  Works great so long as nothing is flexible anywhere, or worn, or loose.



She's right, it's fun.