I hope you are not getting too bored with this but it goes on.
I have basically finished this land speed bike now and it looks every bit as I wanted.
So firing the bike up was not so good at all. I have built a number of A10s now, and I know all the symptoms of bad running. So its out with the magneto (un tested or rebuilt), and in with a fully rebuilt magneto, although this is also not really tested either, but I am enthusiastic, the bike runs OK, but NOT.
So out for testing and running, the bike is crap, I change the timing many times, and all bad, its running best at 34 degrees ADV, but still crap, pining/detonation.
So I decide to go with electronic ignition, via TriSpark here in OZ. This means a battery! Unfortunately the battery space is now housing a float bowl, (bugga).
Its all easy enough to bang out a battery box hey, but this is so so tight in where it fits, that if you can master Rubik's cube you can possibly change this battery, good luck.
Back to testing, when I first fired the bike up, (starting at 33 degrees ADV) it was a huge improvement, running better and great up and down our court.
Then for a real test on our "private" test track,again the results were not so good, "better" , but a long way from where we need to be right now..
We are about 8 weeks out from Speed week now(at that point in time) and not yet entered, I have a team of mates that is organising so many other components for this expedition/attempt at Lake Gairdner, and the time is getting slimmer every hour.
I make a pretty big call to ditch the GP2s and run Mikuni's instead.
I'm going to leave it here for today, but I will say I ordered the Mikunis from SRM as a 750 full kit.
At that point in time I was "out on a limb" no "on a wing an a prayer" or "hoping for a miracle" , wish me luck, I'm gonna need it guys.
RR, I'm a large journal crank, late model
Everyone, to even find a solid LG crank, good luck. I have looked at getting them made, but unfortunately I work to live, still.
RD, the pistons are 10.5-1forged @ 30 tho over (max for my class), I'm also running MAP "H" beam rods 1mm shorter than std I believe.
I'm also running high octane (GAS) as approved by DLRA, 105 octane GAS
Im still wishing erveryone the best, stay well. Thomas.