finished flywheels
the hole for the hardened pin is 0.02 mm smaller than the pin
the hole for the hardened pin is 0.02 mm smaller than the pin
Bugatti straight 8 cylinder with blower, design, 3D printed molds, castings , machining, assembly
- Thread starter Foketry
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machining of hardened pins, obtained from commercial pins and beveled 30 degrees for assembly by 6 Tons press
The last photo in post #60 shows a milled face on the crank web. What was that operation?
to ensure the perpendicularity between plane and 4 holes, I tried to mill the plane before making the holes, but it was a test with poor results.
I preferred to align the turned piece in the vice, check with the dial gauge and drill the holes
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Hi Jules,
you are making great Progress. With that Velocity the engine should run in a pair of weeks.
Michael
you are making great Progress. With that Velocity the engine should run in a pair of weeks.
Michael
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Your Setup with the four Pins is very interesting. It should give a very precise allignement and the screw is only stressed be draw. I used for this connection 4 m3 screws. with no pin the allignement is made with the race of the ball bearing.
The screws are stressed be drwa and maybee also by shearing. So i believe your way is the better solution.
Michael
The screws are stressed be drwa and maybee also by shearing. So i believe your way is the better solution.
Michael
my solution is 4 pins dia 3 mm and a central M4 screw to guarantee the phase for each cylinder and the transmission of the torque
After crankshaft assembly I will make a grind of bearings seats.
Nice solution Foketry. This is the same principal typically used to secure flywheels, prop drivers etc. on 'fullsize' engines.
Another option uses hollow dowels with screws through the dowels. This allows both the shear and tensile loads to be reacted at a greater radius from the axis, giving the assembly greater stiffness.
Another option uses hollow dowels with screws through the dowels. This allows both the shear and tensile loads to be reacted at a greater radius from the axis, giving the assembly greater stiffness.
the complete crankshaft design
pin pressed into the hole and needle bearing
one of 8 crank web
Tool post grinder at work on the lathe
assembled in the engine block
with a dressing diamond fixed on the chuck, as in a grinding machine
The design of the rod
the machined rods, first phase
Cutting with band saw
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