I started thinking about what i wanted to do with the bike over the winter, what changes i wanted to make and what really needs improving. I'd thought about only doing the most necessary things so i could carry on where i left off and continue making small changes. Plus that way I'd have a chance to save up a bit of money to pay for next years racing.
However.... having to take the motor apart has changed that slightly. There are things i could change whilst it's apart for instance..... things like the gearbox......
I've decided to have my box modified into a 3 speed auto, which means (for those who may not know) that the first 3 gears can be changed without cutting out the ignition. The airshifter will change gears almost seamlessly, and the ignition kill will only be needed to select 4th and 5th.
There are advantages and disadvantages:
On the negative side - if the throttle is shut off or any kind of misfire, ignition failure etc happens in 1st or 2nd then shift fork or shaft damage is likely. Should i not have a towbike at every round then I'll have to push it as it wont be rideable unless i use 3rd gear. And more likely than any other scenario is that i will plain forget.
On the plus side - the bike won't unload between gearchanges, the tyre doesn't have to lose then regain traction, and the bike should remain composed with the front wheel up and wheely bars down. And of course the large backfires that happen during shifts will be reduced to just 2.
The one thing i need to change the most is the starter. It's been troublesome all year and has surprised me every single time it's actually managed to start the bike. Plus it's had the sticky solenoid problem which at the very least is annoying. So I've made some changes, the first of which is much much larger diameter battery cables as used on HGV's. That should help the starter get more lovely tasty electricity in the first place. Plus I've just bought a larger - more powerful 24volt starter motor taken from a 4.2litre Toyota Landcruiser. It's rated at 4.5Kw (thats 6hp!) so if that fails to turn it over I'll be at a loss for ideas....
Other things that need doing are fairly minor, i want to get a rebuild kit for the Nitrous and Fuel solenoids, a gauge for the nitrous bottle so i can find the pressure at which it works best. I also want to lose the fuel pump for the carbs as it's not really needed, i just need to find an efficient way of routing fuel pipes from the tank to the carbs.... i've tried this before but i have some new ideas.
And lastly (for now at least) i want to buy some race fuel such as Sunoco Max NOS and take it to the dyno once again to jet it correctly. What i don't want to do though is use the drag tyre so i'll buy a worn out street tyre and fit that onto the rim just for the dyno session.
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