Rake With Stripping Device

Rake With Stripping Device Two design concepts for a RAKE with a device to remove easily off the raked up material, like grass or foliage. A request by a family member and an inspiration resp. small challenge for me. The animation has been done for "Version B" without showing the actuating compression spring, because I don't know how to animate a compression spring in «KeyShot 4». But I want to show the function of the stripping device. Notes: Stripping device: Material: Aluminium for all components, without the compresson spring and screws Compesssion spring: Spring steel Screws: Steel Complete moving mass of the stripping device "Version B": approx. 1.65 kg Complete moving mass of the stripping device "Version C": approx. 1.2 kg Compression spring for "Version B" (calculated): Material: Spring steel Dm = 15.5 mm d = 1.8 mm Di = 13.7 mm Da = 17.3 mm Number of spring coils: see 3D model L0 =115 mm L1 = 106 mm L2 = 30 mm Working stroke = 76 mm c = 1.915 N/mm Compression spring for "Version C" (calculated): Material: Spring steel Dm = 17.8 mm d = 1.3 mm Di = 16.5 mm Da = 19.1 mm Number of spring coils: see 3D model L0 =115 mm L1 = 91.2 mm L2 = 15.2 mm Working stroke = 76 mm c = 0.516 N/mm Thread for handle attachment: M30 x 3.0 Thread for comb attachment : M6 The models are available as STEP files (.stp) only.