Short forks

[blackie]

Hi' looking for the best way of lengthening my forks, I'm starting a new build with a Slabby frame, I've seen the stepped yoke's they look ok' but I need about 70'mm extension to get the stance right, I'd rather have stainless inserts in the top, here's a pic of the forks...

[SiBag]

You might me able to get longer for tubes.

As far as I can remember the tube OD is a fairly common diameter. I would not recommend adding extensions to the top of them.

[blackie]

No mate, I don't like extensions, much rather have longer tubes, what about the internals, how you get round that, thanks for reply..

[clivegto]

Cut some more yokes up & weld them to the top one & drop the forks down.

[bluedog59]

I thinks those forks are a pair of RSU46's out of a Bimota SB6. 

70mm is a lot to extend forks by with a screw in extension, you could go for a 45mm stepped yoke, a 25mm fork extension and the clamp area of the yoke 30mm deep.

This will give you the extra 70mm length and the joint between the extension and the leg is supported and covered by the yoke.

There's a service manual at www.kvenna.net/Doc/PaioliRSU.html 

[blackie]

Yes mate out of a Bimota, might not have to be 70'mm, I'll block it up to see how it looks bit by bit, it's just that I don't like the look of a bike low at the front with its belly hanging on the road, it's nice to have late model forks but there all to short, got some 1000k6 forks as well, there the same to short, ...

[bluedog59]

Remember that you'll need more fork extension than the size of block you put under the wheel due to fork angle.

[Gammaboy]

I have a suspiscion that a set of tubes out of a ZX9 fork will give some extra length.

[Gammaboy]

Oh, and be very carefull not to over tighten the axle clamp - have seen a few with mullered clamps or bodged replacements floating about for sale.

[blackie]

Thanks for that info, the axal clamps on these are ok' .. as for zx9 tubes I'll have a look I've got some in me cave somewhere that I never used...

[Gammaboy]

The ZX9 bits can also be used to get adjustable preload. (I suspect that SV1000 bits will work too).

[blackie]

Ok" thank's,   I'll try me zx9 forks aswell, like you say ajusterble...