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FOAK: Carb balancing
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Ok, I decided after riding the pan european for a bit that it might be
a bit down on top-end power. I am also disappointed with the grunt,
seems about the same as my veefer and I was expecting more.
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Sir should try one of Mr Hondas finest Blackbirds.
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Sir has, and Sir knew that some sad Honda rider would stick his head
above the parapet to criticise Sir's sweeping generalisation,
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But, but, compared to the Viffers the bird is a completely different
kettle of our finned friends.
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They're a rare air-cooled GT750?
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particularly wrt the bigger CBRs. However, even using such past the
use-by date bait, it appears that SuperDreamBoy is now on the hook.
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Yes it is the 1100. On paper it has more torque and at lower revs than
the veefer, but I guess that is offset by the weight. And yes it is
heavy, but I'm amazed at how the weight really does disappear as soon
as you set off. I bought it for two-up riding, and so far I am really
pleased with that.
I still think there's something up with the carbs, it runs out of steam
at around a 100. On private roads of course.
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Hence my OP. Top speed of a new 'un should be around 220kph/136mph
apparently. I still think a carb piston or two is not lifting.
Hopefully the gauges might give me a clue. I can't manouevre a
mirror/light in there to see what's going on. I really don't want to
take the carb tops off unless I have to 'cos I could end up with more
work.
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I think it might have the same problem as I had on another bike, one of
the carb diaphragm thingys not sealing properly and so the piston
doesn't rise.
No problem I thought, just have a quick look inside the airbox while
the engine's running and I'll be able to see. Except I can't. The carbs
have got weird right-angle bellmouths and I can't figure out a way to
be able to see down them. I thought of sticking some tube down inside
but they are too stiff. I can't take them off without completely
removing and separating the carbs. Anyone have any bright ideas?
Luckily I don't have a rubber cutting disc for my angle grinder. It
struck me that the ideal thing would be some kind of vision device that
various medical specialists like to shove inside various orifices of
the human body, but I don't have access to one of those.
In the meantime I ordered meself a set of vacuum gauges. It's about
time I learnt to balance a set of carbs other than by guesswork. (And
I've never been able to hear the diffence in the hiss through a tube).
I haven't used gauges before but I'm assuming that the carbs are
balanced mainly at tickover/low revs? If one of the pistons isn't
lifting at higher revs, will the gauges show this up (I'm assuming it
will have a higher vacuum)?
TIA
ps, If that was you under instruction on the Stonehenge-Devizes road on
Saturday pm, I think you were riding far better than your instructor.
My ex-police instructor would have hauled me over the coals for the
number of potholes/manholes/drains that he hit.
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