Now there's some quality ragging!Originally Posted by Bren_chch
No, because Ducati = Italian = bad
also its a 4 stroke. What am I doing here again?
No8 Wire Extraordinaire
Now there's some quality ragging!
No, because Ducati = Italian = bad
also its a 4 stroke. What am I doing here again?
Don't you look at my accountant.
He's the only one I've got.
MotoFXR's will rule the world!
You know why!!!!!! Join the dark side master Dave, its your destiny!What am I doing here again?
Its harder to lose weight than gain horsepower.
No8 Wire Extraordinaire
As we talk I'm daydreaming about converting the Van to the enlightened path.
Wonder where I'd fit the spannies?
Don't you look at my accountant.
He's the only one I've got.
Unknown Disorder
In the back for the run to the tip?
Long Haired Yobbo
Under the floor! You don't need all that ground clearance!
I often daydream of building a 1000cc 2 stroke V8 for my fibregalss beach buggy.
It would be quite expensive to get someone to make the crank and cases...
As a rally/hillclimb/gravel sprint car it would be class B, so in with 1600s and 1800s mostly but the power to weight ratio would be WAAAY better.
It would need lots of other handling stuff.
Lotto.
Heinz Varieties
In the riders seat
So that would be the same for all singles then?
Because the mighty GN with the rebalanced crank after it was lightened (on the rare occasion when it was going) was a damn sight smoother than a FXR sans balance shaft
"If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough power."
Hardcore Biker
Balancing is a black art. The piston trings and gudgeon pin are weighed and a % of this is taken for balancing the crank, anywhere between 50 and 70%. A single will always vibrate, the question is when you take the whole weight and springiness of frame and motor etc, can you get get the balance factor at a point that gives minimum vibration at the riding speed.
Twins are just as bad. Think of old Nortons. It was found that if you took a Norton and set one crank at 76 deg to the other, the vibrations were drastically reduced.
To get a single 'balanced', what has been done in the past is a few tapped holes are drilled in the crank and then various different weight materials are screwed in and run and then tested for vibration.
I was thinking that a plug hole in the crank case could facilitate this.
My hand gets numb on my Honda CB150 after 4-6 laps.
Cheers Wallace
No8 Wire Extraordinaire
Well in the absence of that one of Jimmys V6 750s should suffice, Find that 50k & you're away
I'd prefer not to.
being 360 twins they were like two singles anyway.
Not sure I like the idea of screwing things into a crank while still in the cases & hoping it stays put at 12,000rpm.
You could try a flywheel weight with offset, while it would create a rocking couple would give you an order of magnitude test. Seen it done before
Don't you look at my accountant.
He's the only one I've got.
In the riders seat
My GN got a few extra bits of metal welded to the crank, even in a 1 hour race there is no numbing of the hands
It was done by HPE when they lightened it
"If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough power."
Forum whore
Fpppt.....
Mine IS a two stroke, 600cc air cooled 4 speed, and, if you lay the rear seat down, you can actually fit a vespa in the back...... I drove it from Imola to Münich with a vespa in the back last year...... I wonder if it could haul a bucket round NZ?
My younger brother came to visit a few months back and was embarassed to be in the passenger seat, and just about cried when I had to mix the oil in the fuel!
Forum whore
The Supermono had a 2nd rod that connected to a weight to imitate a 2nd cylinder at 90 deg.
As for the FXR vib issues with the balance shaft removed, I have a sure fire cure. LEAVE THE SODDING BALANCE SHAFT IN. That will work every time.
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