We went by FIM rules that are a bit different to your scta rules, you guys have much more experience of the actual requirements for making vehicles safe at the intended speed, the FIM have to produce generic rules that can be followed by anybody, anywhere in the world and that demands a less specific approach to individual classes, the actual FIM rules are more concerned with the safety of the event and the spectators and that the bike conforms to loose class definitions (mainly based on engine size, not aspiration method) so they offered us a lot of freedom, the only other rule book that i had was the NZ national Road Racing SIdecar regs, so we followed them as well! (sort of)
We built the bike to run on tarmac and the modifications required before it would run on the salt at its true potential (we estimate 385 kmh) are extensive, parachute, fire system etc, are all possible but tricky to retro fit.
it took me three and a half years to complete and involved over 300 people, i have recently finished the whole accounts thing and the total cost to break the record and build the bike etc has come in at NZ$212,581
which is quite a bit more than i thought when i started!
tyres, we used Triumph DAytona wheels and rear swinging arm, that meant that we had to use motorcycle tyres that were rated to the 320 kmh that we were aiming for, the only choice that we had here in NZ was Michelin Pilots. They worked real good and would certainly be safe to go a lot quicker on if the rules allowed.
happy to answer any other questions you guys may have,
our bike is actually going up for sale now, i am looking at putting it up for auction in either Australia or Japan, but i would prefer to see it go to somebody that is going to use it instead of just look at it, if you know anybody that might be interested in buying a current WOrld Record holding bike with a gear to go.. please let me know
remember...
Speed kills....
Go Faster.
cheers
Phil