Is this the right fork oil? - Wrist Twisters
 
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post #1 of 11 Old 06-21-2012, 09:47 AM Thread Starter
Ian
 
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Is this the right fork oil?

I am going to build up my F4i forks for my 919. I finally found a local shop that carries Maxima fork oil.

I know nd4 and a few others recommend the Maxima "racing" fork oil, the only weight they had was 7wt 125-150.

They also carmy Maxima regular fork oil, i choose the 10wt.

Which one should i go with? I am thinking the 7wt racing is the ticket.

Info, opinions etc.

Thanks,
Ian

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post #2 of 11 Old 06-21-2012, 10:30 AM
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your gonna want to order some of the 10wt racing fork oil 7wt is gonna be too thin... and the standard stuff is crap and wont last all that long.

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post #3 of 11 Old 06-21-2012, 10:34 AM Thread Starter
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Okay thanks. Does the 10wt come in the same 125-150, or is that different as well.

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post #4 of 11 Old 06-21-2012, 11:03 AM
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Quote:
Originally Posted by HeliMech View Post
Okay thanks. Does the 10wt come in the same 125-150, or is that different as well.
honestly not sure.... let me see if i have some in the garage...

EDIT.... hmm i only have the 5wt 85-150 that i THINK i used in my crf250 forks (im 95% positive it was 10wt i put in my 919 almost 18k miles ago)...

according to the maxima website 10wt is 165-150

http://www.maximausa.com/shopping/in...products_id=44

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post #5 of 11 Old 06-21-2012, 11:23 AM Thread Starter
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Thanks for the info and the link! Going to drop back in and see if they will let me refund and order me some 10wt good stuff.

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post #6 of 11 Old 06-21-2012, 11:53 AM
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Quote:
Originally Posted by HeliMech View Post
Thanks for the info and the link! Going to drop back in and see if they will let me refund and order me some 10wt good stuff.
ya the stock is some honda pro ss-8 which is 10wt. so id stick with 10wt.

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post #7 of 11 Old 06-21-2012, 04:18 PM
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Quote:
Originally Posted by HeliMech View Post
I am going to build up my F4i forks for my 919. I finally found a local shop that carries Maxima fork oil.

I know nd4 and a few others recommend the Maxima "racing" fork oil, the only weight they had was 7wt 125-150.

They also carmy Maxima regular fork oil, i choose the 10wt.

Which one should i go with? I am thinking the 7wt racing is the ticket.

Info, opinions etc.

Thanks,
Ian

Attachment 20937
10 wt, my friend.
Until the day you get a revalve and custom stack done, in which case you'll want the 125-150.
And if you ever want to turn those stock cartridged forks into really good pogo sticks, use 5 wt or lower - it's very effective in yielding a nice "springer" front end.

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post #8 of 11 Old 06-24-2012, 08:40 AM
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Quote:
Originally Posted by HeliMech View Post
I am going to build up my F4i forks for my 919.

They also carmy Maxima regular fork oil, i choose the 10wt.

Which one should i go with? I am thinking the 7wt racing is the ticket.

Info, opinions etc.

Thanks,
Ian

Attachment 20937
I use the Maxima Fork oil < regular type > in the 10wt in the 919 and two bikes with USD's. It has a high VI index to help operation in a wide temp range . Fact is, on Maxima's typical data sheets both the Fork Oil and the Racing Fork Fluid have identical specs in the 10wts .

Both have a 182 VI index
Both are 37.4 vi @ 40c and 7.72 vi @ 100c - even the flashpoint is the same.

Just a note - the F4I fork springs are rated @ .660 kg .That is right at for a 165lb rider.

Do you plan to use a little heavier aftermarket spring ? Rider weight ?

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post #9 of 11 Old 06-24-2012, 08:52 AM
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Quote:
Originally Posted by tuned2g View Post
I use the Maxima Fork oil < regular type > in the 10wt in the 919 and two bikes with USD's. It has a high VI index to help operation in a wide temp range . Fact is, on Maxima's typical data sheets both the Fork Oil and the Racing Fork Fluid have identical specs in the 10wts .

Both have a 182 VI index
Both are 37.4 vi @ 40c and 7.72 vi @ 100c - even the flashpoint is the same.

Just a note - the F4I fork springs are rated @ .660 kg .That is right at for a 165lb rider.

Do you plan to use a little heavier aftermarket spring ? Rider weight ?
IF you meant 660s being right for a 165 # rider for F4i forks grafted on to a 919, then you are miles off.

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post #10 of 11 Old 06-24-2012, 09:18 AM
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Quote:
Originally Posted by mcromo44 View Post
IF you meant 660s being right for a 165 # rider for F4i forks grafted on to a 919, then you are miles off.
That's not what i said . I wanted to hint he needed heavier springs and was waiting for < his > reply.

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post #11 of 11 Old 06-24-2012, 09:46 AM
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Quote:
Originally Posted by tuned2g View Post
That's not what i said . I wanted to hint he needed heavier springs and was waiting for < his > reply.
Hence predicating my comment with IF. Anyway, more to the point, yes he needs different springs. He already has them. He's already done the spring rate routine. Just has to fit them.

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