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Hello sorveltajaCongratulations for getting this far. A noisy three speed and reverse epicyclic gearbox using printed gears is a real achievement. With any Wilson gearbox, all the epicyclic stages spin at different speeds, The speed of the output shaft is dependant on which gear band brake is selected. First and Reverse gears will the worst as the overall reduction is the highest and reverse has a direction change as well. Some of the epicyclic stages will be spinning really fast.What's you reasoning for going from 1.0 Mod to 1.5 Mod? My instinctive reaction would be to increase the tooth count to reduce the tooth meshing noise, unfortunately reducing the tooth size also increases the precision required.It is normal practice to have three planet wheels, instead of just the two. This will have the effect of increasing tooth count as well as improving the load distribution and concentricity of the sun and planets, as they spin inside annulus gears.Do you have an end use for your epicyclic gearbox or is it simply an exercise in design and 3D printing? My Merritt-Wilson transmission system was designed for use in a 45Kg 1/6 scale, all metal, model tank (AFV) driven by a 2HP four stroke petrol engine. The Sturmey-Archer bike gear hubs provided the epicyclics for both the Wilson gearbox and for the Merritt double differential track steering. The S-A bike hubs selflessly donated their internal organs for scientific purposes. They proved to be a strong and very robust solution. They were also quite noisy, but then, so is any tank.Mike

Mike, the reason for going to 1.5 mod was simply to see, how much more there is room to play with offsets. When printing gears, they will not be as accurate as machined ones. So all kinds of eccentric defects are always present. To overcome that, I increased the tooth size, so there is bit a better chance to avoid the collision of one gear's teeth's outer diameter(slightly eccentric), with other gear's root diameter(also slightly eccentric). I wish I could explain that better. Instead of just two planet gears, I have added two more. With 21 teeth ring gear, and 7 teeth planet gears, to my surprise, four planet gears seem to fit, or mesh together with sun gear and ring gear.But I'll have to confirm that, by printing them out first. I have even drawn 1.5 mod helical gearsets, but wouldn't hold my breath for them to be less noisier.What comes to my take on epicyclic gearbox, It's more like an exercise to realise a model, that could hopefully end up as a usable project for others, that are interested of planetary gearbox, and its magical movements. Of course, the gear changing mechanism is an open question so far. But I'll get back to that, after I get the gearset problems sorted out.And Mike, that tank project seems quite interesting . What could be better, than putting the four cycle engine, coupled with an automatic transmission to actual use??Do you have a build blog of that tank?And thanks for the additional pictures of the Sturmey-Archer gears.

CMD M602 Received.Control Release.okCMD M601 Received.Control Success.okCMD M602 Received.Control Release.okCMD M601 Received.Control Success.okCMD M650 Received.X: 1.0 Y: 0.5okCMD M115 Received.Machine Type: Flashforge FinderMachine Name: Flashforge FinderFirmware: v2.2.7.299 F2.12.2 20181203SN: FFF215029X: 140 Y: 140 Z: 140Tool Count:1okCMD M114 Received.X:-64.9991 Y:-64.9991 Z:70 A:0 B:0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: READYMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M28 Received.Writing to file: 0:/user/testi.gokCMD M29 Received.Done saving file.okCMD M23 Received.File opened: testi.g Size: 5File selectedokCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:27 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:27 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:27 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:27 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:27 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:27 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:1MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:27 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:1MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:1MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:27 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:1MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:27 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:1MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:1 Y-max:0 Z-max:1MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:1 Y-max:0 Z-max:1MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:1 Y-max:0 Z-max:1MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:1 Y-max:0 Z-max:1MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:1 Y-max:0 Z-max:1MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:27 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:1 Y-max:1 Z-max:1MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:1MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:27 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:1MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:1MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:1MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:1MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:1MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:27 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:27 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: BUILDING_FROM_SDMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M26 Received.okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: READYMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:27 /0 B:0/0okCMD M27 Received.SD printing byte 0/1000okCMD M119 Received.Endstop: X-max:0 Y-max:0 Z-max:0MachineStatus: READYMoveMode: READYStatus: S:1 L:0 J:0 F:0okCMD M105 Received.T0:26 /0 B:0/0ok

~M601 S0~M602~M601 S0~M650~M115~M114~M27~M119~M105~M28 5 0:/user/testi.g~M503~M29~M23 0:/user/testi.g~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M119~M105~M27~M26~M119~M105~M27~M119~M105