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  1. E

    50 HP 5 CYLINDER RADIAL WITH PREDATOR HEAD/CYLINDERS

    There are taller ones for stroker applications, but the hci radial makes do with standard height jugs and 3.5" stroke.
  2. E

    50 HP 5 CYLINDER RADIAL WITH PREDATOR HEAD/CYLINDERS

    Here is a cross section of the hci engine, hopefully this helps. I'm not smart enough to clean sheet any type of engine let alone a radial, so I continue to collect drawings to better understand.. Hope this helps. I'm pretty sure vw cylinders come in 92mm bore. Maybe that's a inexpensive...
  3. E

    50 HP 5 CYLINDER RADIAL WITH PREDATOR HEAD/CYLINDERS

    I've personally never seen a connecting rod cap with a mating surface that wasn't Parallel with the rod. It seems like it would tend towards concentricity issues. I do think a built up crank with a solid master rod would ultimately be easier and cheaper to deal with. I have the drawings for a...
  4. E

    50 HP 5 CYLINDER RADIAL WITH PREDATOR HEAD/CYLINDERS

    I've been following along with great interest and have a couple observations. IMHO trying to retrofit an existing crank, especially a one piece may end up being a bigger headache than it's worth. A built up crank out of 4140 will be very serviceable and greatly simplify the master rod, allow...
  5. E

    Less than $1K TIG welder recommendations

    My brother got the Eastwood combo. After returning it either two or three times because one or both quit working he gave up and got a Miller. You get what you pay for.
  6. E

    Drivetrain Power Loss

    Fwiw all the manufacturers I'm aware of call them final drives. That said, it wasn't cause for a seizure if a customer called it a differential.. Also, three of the motorcycles sitting in my garage have one 90 degree direction change one universal joint a piece. Aside from ease of gearing, the...
  7. E

    Drivetrain Power Loss

    I'm not much for posting, I mainly just read everyday and this thread has proven to be an interesting one. I don't have anything scientific to add, just lots of first hand experience with all three drive systems on motorcycles. I can tell you that on a 11000 mile trip the modern fuel injected...
  8. E

    Wanted :186 cu in, Radial Y ; (30 hp) @ 1,300 rpm -- !

    There is a hci aviation facebook group that Andy Hereford is a member of. He has some sets of plans ready to go. There is a guy adapting a Honda industrial head to the design which looks pretty promising..
  9. E

    Aeromarine 60hp V-Twin Engine

    It looks exactly like a canam 800-1000 engine. Exactly.
  10. E

    Raptor Composite Aircraft

    I've read with great interest for a while now and appreciate the knowledge present on this forum and how it could be used in this project. As far as Harleys go the engine/trans unit has always been more or less treated as a unit and used a chain primary. Primary belts are a more custom...
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