With the kids asleep and the feancee out on a party I had the evening for myself, and the result was that I headed out to the workshop.
I got a package with a bunch of nice small aluminum weld lids for the fuel and oil tanks today, I can´t remember how I ever got anything done before I discovered Ebay...
A couple of hours more on the brackets for the fairings, now they stay in place enough so I can strenghten the sides and make brackets there as well.
I have decided to skip the PWM controller and use my old trusty needle valve I made for my turbine pocketbike years ago, a very simple design that regulates the fuel pressure by choking the internal fuel return flow.
This is exactly in line with my goal to have the bike as field repairable as possible, if it starts to leak or jam I only have to fit new needle seals and then it is as new again. No bloody PWM controller that burns out in the middle of nowhere, been there done that with the jet sled we´ve been racing at the Swedish Ice landspeed event...
After testing different needle profiles I found one that produced a decent flow curve.
I even made a test rig for it, hard facts tends to beat guessing sometimes.
Right now is it under a thick layer of dust in my friends barn, I will go get it this weekend and clean it up some.
Cheers!
/Anders