I just acquired a 2022 Royal Enfield with a Cozy Rocket sidecar. I also have a Ural cT that I managed to dial in so that it tracks well and is steady. The Royal Enfield had only 34 miles on it! The person who bought it new apparently didn’t like it and traded it in for a different bike. The problem is that it is a bit twitchy, especially in a strong wind, and has a tendency to rock back an forth. I have not checked the toe-in and leanout, nor have a checked the suspension adjustment, thinking I would seek your advice as to where I should start first. I am 79 and have given up riding two wheels due to a slight balance issue that is a result of years of Meniere’s, which is now pretty much burned out. Naturally, strength is an issue at my age. I’m being extra cautious in this regard. I am 6’ 4” and 260 pounds, which probably matters. What do you think?
A free opinion?
Why not.
My guess would be suspension in general and spring rates in particular.
That is if basic setup is good.
Potential solutions?
Fork spring upgrade and experiment with fork oil weights.
Most likely changes rear shocks for heavier sprung and better damped quality units. Likewise with the sidecar.
We will be very interested as a collective as to what you do and how it works out.
I do know it's very satisfying to get your rig setup properly and frustrating when it not.
Oh and photos please or it didn't happen.