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Never mind, davidd's link explains the probable answer as an Argentinian makeshift.
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I`ve done several of those, but it was Mike who repaired the tractor run over ones.Mike White repaired a set of "C" shadow cases many years ago by putting a new set of lugs onto the back of the transmission to replace those that had been removed to fit the engine into a featherbed frame..not the same I know, but difficult nonetheless..
I am fascinated by the Comet racer's double float chambers at different heights. Can you explain, Davidd?
The answer is yes Bob Dunn did oneI lost the plot and made a new thread. This was a question for another thread.
But I am curious to know if any one has repaired a set of chopped cases. I am also interested to know if anyone has seen a chopped motor with a norton box in a regular RFM and UFM.
For some reason, I missed this question many years ago. I can only speculate that a single round float chamber fails to provide sufficient capacity. The 302 and the 504 float bowls are amazingly slow at supplying fuel. They may be run in series to provide some fuel closer to the carb. Fuel starvation probably would not happen often on a track, but whacking the throttle open at the beginning of the straight and holding it open at 7,000 may result in a misfire at the end of the straight due to fuel starvation. I was told by Maurice Candy in 2009, who was racing his Manx, that the only float bowl to use was the 510. Anything else would fail to deliver enough fuel.I am fascinated by the Comet racer's double float chambers at different heights. Can you explain, Davidd?
I believe they are in series, not parallel. The float nearest the carb being the last in line, so it would set the fuel height in the carb. The forward float is acting as a reservoir, it only has to drain completely into the rear bowl that sets the height. That is probably why the forward float is much higher. This is just a guess.The two float chambers are at different heights. Two different float levels, two different fuel levels. So how does that work?
Sorry to be a bit late to this party, the web site was recently so slow for me I stopped coming here.Here is the original post on the chopped engine mentioned by Mark: