Hi Bruno

I understand what you are talking about. I own two other trikes and they have
this type of setup with a cut in the frame and then the bolts to pinch the frame
and hold boom in place, like a seat post on a DFer. I don't see any cuts in the
frame or any bolts/screws to pinch the frame. I will take some pics later today
and post them. I will also look at the sides of the frame to see if there is
something I missed. When I mentioned this to David he seemed to imply that
overtime those two top bolts would notch the boom and keep it in place from
sliding in. I did add another link to the chain (it was tight when I was in the
big big (which I would only use by accident). Hopefully I will be able to get
out later today for a ride and see what happens. As an aside. The boom sliding
in for me is not a bigee so long as I can keep the right distance from the seat.
This is a great improvement over the boom twisting. That was nightmare!

Thanks, Dom.

--- In KMXKartsowners@yahoogroups.com, Bruno <bsantos@...> wrote:
>
> Just checked your pictures and though they are too small I think I can
> see the screw mounts I'm talking about. They are in the frame next to
> the cut in the bottom near the front opening where the boom is
> inserted. If you have just one screw there you can tighten it in place
> or add another one to the empty mount to make it even tighter.
> Previous models had the boom hold by 2 quick release screws in that
> mount. This was before those 2 black knobs were used (X and ST
> models).
>
> When you find your best boom spot you should tighten those 2 screws to
> prevent the boom from sliding. The 2 top bolts will damage the boom if
> you only use them to make that job.
>
> Nice pictures btw! :-)
>
> Cheers,
> Bruno
>