'Simple. Engineering.. the info that you poo-poo as being amateur, made up Scientific Wive's tales against the Church of Darkside.
The (non-MTO) evidence is right there .. the data that i posted early in this thread indicates this - as far as the engineered differences in car vs mc rims.
MC tires are built structurally different from car tires.
MC tires are built for different road forces, which an MC experiences - than that a car tire experiences for different road handling forces in turn. It's all about handling physics. A solo motorcycle handles dramatically different from a car. The road interaction of the tire, differs accordingly. They've been designed accordingly - and to be technically incompatible with each other by design for these reasons. I've said that before - i say it again.
I have noted the difference in manners of a car vs a good sized motorcycle radial, properly mounted in similar usage sidecar rig conditions. I have no experience of a car tire on a motorcycle rim. In my application, a properly mounted auto tire is vastly superior over any motorcycle rubber - EXCEPT when it comes to any significant lean angle. I have felt automotive radial tire "squat" under comparative suspension loading, drive-line torquing under acceleration, and CofG loading shift - and a sway-bar linkage was designed to combat that undesirable attribute of a weaker sidewall - it serves to transfer a good portion of CofG loading to the suspension of the rest of the rig - not to the tire sidewall carcass on the driven wheel, while keeping the vehicle suspension and chassis comparatively parallel to the ground, like a car. A car tire is designed for those conditions.
I know that failure occurs at the point of least resistance, and greatest weakness. The car tire on a motorcycle rim issue, was one of the greatest concerns of safety when i project planned my "hacked up hack", as you have so eloquently put it. Unless the motorcycle rim is re-machined or otherwise modified to conform to an automotive radial bead, it's always going to be the weak point in the safety chain of going Darkside - two wheels or three.
By the bye.. did you know my "hacked up hack" was originally built for the 1500 Wing? If you are as old-school as you make out to be.. can you bend your mind around the scale of engineering to adapt a 350 lb sidecar to a 450 lb motorcycle, when it was essentially made for a 700 lb tug-boat with a more substantial frame and longer wheel-base design? Can you bend your mind around getting it all to work very well together, as individual components and a sum total, without posing a safety hazard or creating a significant point of failure?
Can you figure out why i'd be very critical of mating two different technologies together, without considering, consulting, adapting, modifying and as necessary eliminating any engineering incompatibilities, first?
For myself, it was all about Safety.. not expediency, or experimentation based on blind faith, as seems to be commonly practiced in the Church of Darkside..
The same principles of concern that i considered about car tires on motorcycle rims, as applied to sidecar rigs - are amplified issues on solo motorcycles.
Why do I keep going around and around (pun intended), here?
I'm sure that there is some sort of reference to, or sound engineering advice documented in MTO records to back this HTA charge. Hopefully Bike Cop backs up the badge, with the documentation citation.. i can't be arsed.. this post took long enough.
It's fun arguing with you.. but damn, you are as stubborn as a mule.
Pretty sure I said nothing at all about your hack.All I've seen of it is the picture in this thread and I didn't watch the video,so I have no real opinion of it. I could be wrong as I'm old enough to have a short memory though.
As far as the CT goes it just gets tiresome listening to the arguments against it,when there are so many riders using them with no catastrophic failures, or any failures other than the normal stuff.
I'm just talking 1800's here and don't claim to know much about other darksided bikes,but lets just do some math here.
Lets take 2000(probably a low estimate) Wings in NA that average between 10 and 20 k miles(could be a lot higher as they ride year round elsewhere and I do over 10 k miles a year here) for 14 years.Some of these are very aggressive riders.Have you ever seen Yellow_Wolfe run the Dragon.If you haven't take a look at Youtube and yes he's running a CT.So with this amount of miles running CT`s and some pretty aggressive miles and pulling trailers as well it just boggles the mind that people still believe that they are doomed to failure.
How do you explain these trouble free miles with the known design issues or do you believe that the people that are reporting these trouble free miles are not being truthful