Hi All,
That is correct, a pair of HSR 42s IIRC.
Don is in China on business at present. He had a lot of success with
the Revmaster slide carb on the 6 cyl Jabiru, picked up 300rpm over the
stock Bing. That led to twin HSR 42s for the RX8 engine. The continuing
computer problems with FI and the worry of high pressure fuel in the
cowl were significant factors in the decision.
Dave McC

Dave,
Having had to deal with many carbs and FI systems over the years I would
respectfully disagree that carbs are safer. While there is higher
pressuure fuel in a FI there are systems designed (hoses and ends) to
deal with it. The float valve in any typical carb is the weak link. The
fact that the gas is pumped in by "only" 6 PSI is little comfort when you
have an engine fire. In fact if turned off the FI system provides less
to burn. (No float bowl)
Bill Jepson

Hi Bill,
I see your point but the reasoning was more as follows:
A leaking hose in FI produces a fine mist which, if ignited, makes the
cowl a bomb.
A carb leak will more likely produce a fire, so turn off the fuel and
remove the source.
Of course, these are only likely scenarios; the carb leak because of a
stuck float valve could also lead to an explosion; but the high
pressure mist in the FI example is almost guaranteed to explode. It was
more that the explosion was the worry rather than the fire.

We have a couple of old bike racers in our club  and we spoke at length
on this possibility and the general opinion was that float valves
rarely stuck, and when they did, often the valve stuck in the closed
position; cutting off the fuel. Also the Bing and Mikuni 'caged' valves
are much more reliable than the old Amal "free" valves.

Further to this debate, in your bike days, how common was a stuck float
valve and in what position?

Thanks for your valued comments, BR, Dave McC



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