I have no serious expertice on problems with pulling to one side so I
offer this as a possibility.

There are only a few things that can make a trike pull to one side or
another predominately. One is brake drag, one is bearings, one is
offset weight to one side. Barring any of the obvious, I'd look at
the headsets. A tilted or damaged race is quite probable. Catrike
Expeditions have had problems with shimmy and one of the solutions
was to pre-load the headsets at 70in/lbs of torque before tightening
the steering arms. This is higher than rated by Cane Creek, but
Catrikes has a custom solution [I think they are two tops instead of
the normal set]. It has also been reported that there was a bad
batch of headsets that came to the factory and dealers were
authorized to replace them if they felt there was an issue. I'd say
you have an issue.

One test you could do if you were so inclined is to remove and swap
around the headset parts. This would at least tell you if it is the
trike or the headsets. It should change its character when you've
done this. And as the other poster alluded to, maybe it is simple a
seating problem.

Anyway, I would recommend you bring it back to the Richardson Bike
Mart and have them make it right. I know a strong pull to one side
or the other is very annoying and is not the norm for a trike.

Good luck.

--- In TeamCatrike@yahoogroups.com, Bicycle Minden
<bicycle.minden@...> wrote:
>
> I bought an 2008 Expedition about a month ago and cannot seem to
adjust it so it doesn't pull to the right. I have noticed this while
riding on crowned and flat roads as well as parking lots and have
even crossed over into the oncoming lane on crowned roads [making
sure no vehicles were approaching], loosened my grip on the
handlebars, and had the bike slowly drift back to the right. I have
no adjustment left in the tie rod so I guess that means that there is
neither toe-in or toe-out. I was having problems with low speed
shimmy but that is almost gone since I switched to a more narrow set
of tires.
>
> I bought the bike at Richardson Bike Mart but the day I went over
for test riding, their Catrike mechanic was working an event. The
guys in the shop got things close and I expect my local mechanic can
take care of the other adjustments once we figure out what to do. I
wish this model had the same tie rod system as my 04 road...it was
much easier to adjust.
>
> Charles Rathbun
>
>
> ~~~~~~~~~~~~~~~~~
> "It's a beautiful day out there.
> What are you doing inside?
> Turn off the computer and
> GO RIDE YOUR BIKE!"
>