Here is a different cage that could be used in one of those builds that doesn't have to comply with any rules. Slightly larger and maybe easier to mount.
[QUOTE=David_L6;124858]Here is a different cage that could be used in one of those builds that doesn't have to comply with any rules. Slightly larger and maybe easier to mount.
Hi David,
The 4-port cages look interesting. Have you compared internals dimensionally? The fact it's a pyramid already will save some machine work. Do you mind sharing the application?
Tim
I haven't done much measuring. They look bigger to me though. Those are from a McCulloch.
Sorry to hear about that.... Pretty as the McCulloch cages are, it's not worth the chase knowing they are NLA and that custom reeds must be made. Boyesen offers several 8-port cages with two- and now three-stage reeds available.
For the 666 & 444, the OMC 6-port cage is compact, plentiful, cheap, offers 50% greater opening area compared to the Merc reed cage, and fiber reeds are available multiple sources.
All that said, thank you for offering an interesting alternative.
Tim
that reed bolt pattern looks very familiar?
Here are images from the Bridgeport showing rough port work - hand work to follow. Exhaust ports are not raised to maintain compression and mid-range punch. A 5/16" mill is used and bridges are not narrowed to maintain heat transfer and strength. Final cut is with a 3/4" ball end mill to improve gas escapement from the center exhaust port. Intake ports are opened with a 1/4" mill which allows slightly greater area increase as this side runs cool. Again, bridges are not narrowed to maintain strength. This is one of the easier, more pleasurable operations on the build. The 444/666 projects are not for beginners unless taken slowly. Through the many hours and mods I must remind myself the results are worth the effort!
Tim
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