Fellow GT40 enthusiasts,
I'm looking for input from anyone using or knowing about center-lock wheels regarding the wheel-to-spindle interface when the external spinner or nut is tightened.
My understanding is that conical seating of the wheel on the spindle is essential. Beyond just ensuring concentricity, I believe it's vital for how the immense torque applied by the spinner nut translates into the wheel's secure retention. A conical seat should generate significant radial force, effectively clamping the wheel to the spindle.
Conversely, if the wheel is reacting purely against the inner disk top-hat, the reaction force is entirely axial, with little to no radial component. I'm concerned this isn't the optimal or safest method for high-performance applications like a GT40.
My specific issue is that many aftermarket center-lock spindles appear to either lack a proper taper or feature one that's excessively steep (e.g., 45 degrees), rendering it ineffective for conical engagement. My original GT40 wheels have a very shallow taper, but they don't engage with my current spindles. I'm now weighing options to modify or replace my spindles to achieve that critical conical engagement.
What are your thoughts or observations on this specific aspect of center-lock wheel design and implementation?
I'm looking for input from anyone using or knowing about center-lock wheels regarding the wheel-to-spindle interface when the external spinner or nut is tightened.
My understanding is that conical seating of the wheel on the spindle is essential. Beyond just ensuring concentricity, I believe it's vital for how the immense torque applied by the spinner nut translates into the wheel's secure retention. A conical seat should generate significant radial force, effectively clamping the wheel to the spindle.
Conversely, if the wheel is reacting purely against the inner disk top-hat, the reaction force is entirely axial, with little to no radial component. I'm concerned this isn't the optimal or safest method for high-performance applications like a GT40.
My specific issue is that many aftermarket center-lock spindles appear to either lack a proper taper or feature one that's excessively steep (e.g., 45 degrees), rendering it ineffective for conical engagement. My original GT40 wheels have a very shallow taper, but they don't engage with my current spindles. I'm now weighing options to modify or replace my spindles to achieve that critical conical engagement.
What are your thoughts or observations on this specific aspect of center-lock wheel design and implementation?
