Jota bars and fork tube cap clearance

[Alexb83]

Hello all,

I've got it into my head to upgrade the contents of the front forks on my Jota later in the year, probably with Maxton GP20 cartridges with some level of preload/rebound/compression adjustment.

But it struck me while making some adjustments recently that the existing clearance between the jota bars and the original fork tube caps may not be sufficient to allow for the added head height of the adjusters on the cartidges.

Does anyone have experience/a solution to this potential problem? Some sort of bar riser and longer studs to secure the bar clamp perhaps? Or is it going to have to be some other kind of clip-on? Ideally I would like to retain the Jota bars.

The forks in question are Cerianis.

 

[Grant]

I think you have answered your own question.
These are the options, chose the one you like the most.

 

[Dellortoman]

... or dislike least.

A deciding factor may be that clip-ons preclude the use of the original headlight brackets.

 

[Alexb83]

I want the minimum amount of faff and to retain the maximum number of original parts, so clip-ons are out then.

I'll have to mock a riser up and see how it impacts on steering lock and cable stretch.

 

[Rob]

Think you may be worrying about a non-existent problem.  On a rough measure up, the Maxton fork tube caps c/w domed head allen bolt is 10mm.  The Ceriani domed cap is 12mm above the yoke on my 750 at its highest point.  Also, the Maxton cap matches the fork tube OD so you could recess it slightly as I have with the RGS bar clamps.

Almost as if Maxton know what they're doing!    In any case, if you speak to Maxton when you order, they can modify the cap dimensions if indeed this is necessary.

Having said that, I don't have variable compression damping but this is adjusted from the bottom of the fork leg so should not impact these measurements.

 

[Alexb83]

Thanks Rob - that's reassuring.
I thought the Maxton cartridges adjusted with dials at the fork cap end rather than from the bottom.

I'm in touch with Richard at Maxton now. Just need to wait a few months to get home and have the forks off the bike.

 

[Rob]

There's an adjuster screw under the top domed bolt for rebound adjustment...you need to remove the wheel spindle to get at the compression damping adjuster (through the bottom of the fork leg)

 

[padlock]

There's an adjuster screw under the top domed bolt for rebound adjustment...you need to remove the wheel spindle to get at the compression damping adjuster (through the bottom of the fork leg)

I have maxton cartridge conversion. Im planning on just drilling a hole through the end of the spindle so you can get to adjust the compression damping without dropping the front wheel.

FFFANARCHY