Forks / Yokes

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mikelehan
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Forks / Yokes

Post by mikelehan »

OK Torque / Yorkie

Whats the diameter of the top Yoke and bottom Yoke? I'm consiering having some new ones made as I want to get a pair of Ohlins road and track in the front... they are 50mm top and 53mm bottom

Whats the total length of the fork too?


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Re: Forks / Yokes

Post by Steve-TC1 »

kwak 9 c/e/f forks are 46mm so the yokes will be that allso , [top and bottom ]

758mm or 788mm depending on were you measure from ,
758 is axle center to fork top [not including preload adjuster]
788 is fork bottom to fork top [not inc preload adjuster ]

top of fork center to fork center is 25mm


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Re: Forks / Yokes

Post by deede »

Mike! I'm also having new Yokes made. I'm fitting zx10r forks. I just ordered some 7075 Al, 50mm thick plates. I can send you cad drawings later when I receice them myself!


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mikelehan
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Re: Forks / Yokes

Post by mikelehan »

deede that would be good thanks... do you have any images of the design?


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Re: Forks / Yokes

Post by deede »

No, not yet. We are keeping the original offset. Still, the turning radius will increase a bit, as the fork tubes are a bit bigger than standard, and will meet the frame more earlier.


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Re: Forks / Yokes

Post by mikelehan »

where will you be setting the handlebars. currently they sit on the yokes, but the race clip ons would ususally go under the yokes. if that happens then there might not be enough room under them for the clutch and brake levers...if you know what i mean?

will you just be making a top yoke or bottom yoke too? and will the top yoke be 50mm?


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Re: Forks / Yokes

Post by deede »

Bottom yoke 50mm. Upper yoke 20mm. Clip-ons will go under the upper yoke. I will be using Gilles GP-Light Clip Ons. Don't really know what happens with the room =P I will sort that one out later ;)


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mikelehan
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Re: Forks / Yokes

Post by mikelehan »

20mm upper yokes small dude. should be around 50mm i would think? im on about the hole for the fork legs to fit :)


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Re: Forks / Yokes

Post by deede »

Is it? zx10r upper is 20mm also!


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Re: Forks / Yokes

Post by deede »

Take a time and think about how the forces under braking get transferred from the fork tube to the lower yoke and via that to the headstock you will notice that 20mm is good enough for upper yoke. There fork tubes upper ends will try to pull them self away from the headstock(forward), this is where the upper yoke will transfer that force to the headstock.


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mikelehan
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Re: Forks / Yokes

Post by mikelehan »

oh you mean the thickness of the yoke and not the diameter of the fork leg


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Re: Forks / Yokes

Post by deede »

YES! I ment the thickness of the yokes. ;)

The upper yokes hole is 50mm. And the lower yokes hole is 54mm. (in zx10r forks) I have no idea how big they should be made if you're making those yokes for those Öhlins forks. When you get the info, just post it, and I can have my guy draw those drawings according to your needs.


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mikelehan
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Re: Forks / Yokes

Post by mikelehan »

same dude... 54 bottom and 50 top


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Re: Forks / Yokes

Post by deede »

Then it's piece of cake! I will post you the pictures as soon as I get them. Do you already have those forks or you're going to buy them?


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mikelehan
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Re: Forks / Yokes

Post by mikelehan »

i hope to get some mate...seen a pair going cheap


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