With the arrival of some kind of summer I am quite busy building sheds and casting a concrete floor in the cold section of the workshop, luckily I haven´t got all that much stuff to do on the bike before One Mile in Färila in September.
One of the things I need to do is a tachometer for the gas producer, Olov has promised to help me out with the electrical stuff so this week I drew a display housing in Inventor and 3D-printed it in PLA plastic.
I also had to change the gearing a bit to allow for a higher top speed now that I run on regular street tyres without draggy spikes, some calculations gave a list of top speeds for different gearings at 30.000rpm power turbine speed. I like a bit of safety margin before the centrifugal force starts stretching the blade roots.
I fitted a 20 tooth sprocket which gives the bike a top speed of 320km/h, I don´t think I´ll reach it in a mile but it is easy do change sprockets at the race.
To get rid of the nasty steering wobble I changed the cheap Ebay steering damper to a genuine BMW S1000RR damper, since it hasn´t got the same shape as the China damper I had to make a custom bracket for it.
Here I´ve just cut the bracket out for test fitting, later I´ll make it a bit more pleasing to the eye.
It turned out pretty well I think, I would prefer to have the steering damper travel a little bit longer but the fairings and air box was in the way so it ended up in this position.
Cheers!
/Anders