What we found with the smoke sticks was that you have to be at least four feet above the ground at 3 feet behind the bike to be out of the exhaust-fouled air. Basically that puts the kennel back in the major airflow, which is good for the dog, but bad for the aerodynamics of the whole rig! BTW, my latest testing was done on my '83 Voyager 1300 with it's Motorvation Spyder sidecar shown in my avatar pic, both with and without the sidecar.
The smoke "cloud" also almost completely engulfed the kennel when mounted directly behind the bike.
Here's a crazy test method that another guy used in our sidecar group who had the same issue I did. He poured a 2-stroke mix (40:1) of fuel/oil into his Yamaha Venture cruiser in his bike to create a smoke cloud to watch where his exhaust went! It WORKED! Good upper-cylinder oiling for a short while also! Slightly fouled plugs though! There are several other testing methods to do the same thing. I would suggest doing SOME type of definitive testing on your particular rig to verify what you end up with before subjecting your fur-kids to any possible harm.
My dogs have been very important to me since they have been service dogs, so all this research was crucial to being able to safely take them on trips on the bike. I have had a sidecar on all of my bikes since having service dogs, but most, being heart monitor dogs, didn't like riding that far away from me. Having the sidecar has simplified my choice in placement of the kennel. My passenger rides in the sidecar and the trunk area of the sidecar replaces the lost storage of the removed trunk.
I will be interested to see your solution and hear what your research reveals to you. Keep us informed, please.
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